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Furmark gpu stress test


Here are 8 of the best tools for stress testing your CPU, RAM, and GPU. It monitors your computer while the test is in progress, and protects your components by stopping automatically once a component reaches a critical temperature. The tips presented there should be helpful regarding how long to run the torture test and provide a solid guideline on how long to run the Prime95 stress test. This is standalone benchmark/stability test tool based on FurMark, but now with big and furry FurMark, bilgisayarınızda takılı bulunan ekran kartınızı test etmek amacıyla üretilmiş etkili ve ücretsiz bir yazılımdır. 14. FurMark is a lightweight but very intensive graphics card / GPU stress test on Windows platform. In fact if you're overclocking your card you should really only be using furmark as the stress test, you need to ensure your clocks are stable. You won’t need to run FurMark for long. If you’ve just built your computer, overclocked any of your components, or you are having problems with an aging system, stress testing your PC will give you a good idea of […] FurMark is a very intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. com FurMark is a free OpenGL benchmark/stress test, and for the past five years it has reigned supreme in the enthusiast’s arena. Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a perfect stability and stress test tool (also called GPU burner) for the graphics card. GpuTest comes with several GPU tests including some popular ones from Windows’world (FurMark or TessMark). Bước 7: Và như đầu bài có cảnh báo khi sử dụng Furmark chạy mục này bạn sẽ nhận được cảnh báo từ hệ thống về việc gây ra khi chạy tuy nhiên đừng quá lo lắng vì nếu thấy nhiệt độ quá cao bạn có thể tắt. Is it safe to run FurMark and how long should it run??? Stopped using stress programs like furmark and OCCT for GPU ages ago. it can run on Windows, Linux and even on Max OS X. MSI Kombustor, FurMark stress test  FurMark Display Card Stress Test: First, download and install the latest version of FurMark from FurMark: VGA Stress Test, Graphics Card and  Apr 20, 2010 FurMark is one of the most used stress test tool for graphics cards. Burn-in Test is a prominent way to start a Stress Test of GPU, Furmark will run at default settings at 1280×720 resolution with no AA, which is normal and recommended. It has the potential to If you overclock your card then furmark is the best test to see if the OC's are stable, what is stable in say 3dmark might not survive a furmark test. FurMark is an OpenGL-based GPU stress test utility. Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a perfect stability and stress test tool (also called GPU burner) for the  Mar 13, 2019 Overclocking your graphics card is an easy way to boost PC performance without spending a dime screenshot of the furmark gpu stress test  Mar 8, 2015 Video Card Stress Test with Furmark: If you having display problems and your trying to determine if its a graphics card issue, you can stress test  or benchmark? If it's testing that would be the fluffy donut of death aka MSI Kombustor. Always save your work before you run FurMark, then. Additional utilities (GPU Shark and GPU-Z System: Prime95 & GPU. GPU-Z info and monitor tool. oZone3D. It will be able to run several tests like the stress test, tessellation test, geometry instancing test, pixel shader test and vertex test. 4GHz (not for power efficiency but just to get a stable OC. - - - Updated - - - Well, I'm probably completely wrong here. Download FurMark. I facepalm when I see folks stress testing with furmark for 10-12 hours thinking its similar to how its done on CPUs. Top 5. Ok so this test its freaking scares peoples, so a 60 second benchmark can kill your GPU? I'm against Furmark testing to, but only when you stress your GPU for 10-20 minutes or above, in 60 second i think no harm is done to the GPU, because the max temp don't even reach close to the temps in Uningine benchmarks Video Card Stress Test with Furmark: If you having display problems and your trying to determine if its a graphics card issue, you can stress test that card with software called Furmark, when you install the software be very careful of the settings you use to burn test your graphics card. Welcome to our freeware PC speed test tool. This software is compatible with the Windows platform and can be used for free to test the GPU stress. Speed test your GPU in less than a minute. FurMark is a very intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. 3. And if you're running the Stability test, check the option to log your GPU temperature. I got my number of 6510 for that one. When I run the "Bechmark (user's settings)" test, everything seems normal. It's free, doesn't  Feb 9, 2018 FurMark The undisputed classic among so-called "power viruses" is FurMark. Free Download 7,81 MB. For the MSI AfterBurner we are creating a new function, a stress test which will be called Kombustor. It also allows you to compare the performance of a video card with others. I have a question about FurMark ( the GPU stress tester. Tsung. 0. When done, start Furmark. As seen before, HWiNFO64 is used for GPU, CPU, and RAM stress testing. You can run both the GPU stress test and OpenGL benchmark using this software. Now I can see it's Crysis2. The top choice widget (combobox) allow to choose device for which a test log will be displayed. This tutorial will guide you to stress test your GPU using FurMark software application. These will test your oc much better then furmark or kombustor or similiar programs. Depending on the particular test, this might or might not use the entire video memory or check its integrity at some point. Version 1. Net is the home of Demoniak3D, GPU Caps Viewer and graphics cards benchmarks and is a source of widely apprecited 3D graphics programming tutorials. MSI Kombustor is a GPU stress test and OpenGL benchmarking utility. 0 changes: - Added support of Radeon R9 285. Free to use for the end user, it has 13M downloads since its creation in 2003. What Furmark is - a heat stress test What Furmark is not - a meaningful 2. You can test the memory using DirectX, CUDA Windows 7: Video Card - Stress Test with Furmark. I'm not talking about them more here, you can always download and test them from here. So it did its job for its intended purpose--stress testing. It’s an OpenGL-based app that uses fur rendering algorithms to stress and measure the performance of the graphics card. In some people with heart failure, stress test results may help the doctor determine whether you need a heart transplant or other advanced therapies. There are some more feature reach and heavy GPU benchmark tool by the unigine corp, unigine heaven, unigine vally, etc. MSI Kombustor is a graphics card (GPU) stress test utility and OpenGL benchmark, co -developed by MSI and Geeks3D teams. This will let you monitor the effects of any overheating, and you can close the test down if the card is getting too hot. FurMark est un logiciel spécialement conçu pour analyser les performances et la stabilité des cartes graphiques. MSI Kombustor is one of such test tools that can run benchmark on your graphics cards and put it under an extensive set of stress tests. OpenGL. Run the . 1 or 3. The FurMark benchmark tool can put your overclocked GPU under stress while rendering furs on your screen. In this guide, we’ve given you a rundown on 11 of the best tools to use to stress test your CPU, RAM, and GPU. In some cases, this could lead to slowdown of the graphics card due to hitting over-temperature or over-current protection mechanisms. MSI Kombustor is a graphics card (GPU) stress test utility and OpenGL benchmark, co-developed by MSI and Geeks3D teams. A Stress Test compliance report is required to submit to NVIDIA in order to receive NVIDIA Business Platform certification. Using FurMark and other Stress Tests with GeForce graphics cards. Stress Mode completes the same system component checks and then executes a CPU and GPU stress test to more fully check the system stability, completing in around 30 minutes. Hình GPU stress tests are generally designed to attempt to overheat the GPU. GpuTest. Tsung is designed for developers to stress test MySQL, SOAP, WebDAV, PostgreSQL, HTTP, and XMPP servers. I use furmark to stress test revived gpu for 15 mins. The high power draw required by FurMark puts under pressure the GPU and VRMs (voltage regulator module) of the graphics hardware. While this Running a Furmark Graphics Card Stability Test. Furmark is an intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. Fur rendering is especially adapted to overheat the GPU and that's why it is also a perfect stability and stress test tool (also called GPU burner) for the graphics card. ) I am wondering if FurMark can damage my GPU or even my CPU. User Guide Free Download. It's a quick OpenGL benchmark as well. GpuTest is a cross-platform software i. This tool can be used to see if  How to Stress Test a Video Card with Furmark FurMark: VGA Stress Test, Graphics Card and GPU Stability Test, Burn-in Test, OpenGL  Sep 2, 2010 Discussion: The Furmark application is a very intensive GPU benchmark that uses fur rendering algorithms to stress test the graphics card in  Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a perfect stability and stress test tool (also called GPU burner) for the  Jan 12, 2018 FurMark. Price: Free Available for: Windows, Linux, and MacOS. Features of FurMark. 3V and at 4. It is also not a general stability test, as it only uses "some" of the features provided by the hardware (I don't think it even uses any DirectX 11 features). - Custom preset: Test điểm số của GPU theo ngẫu nhiên. Windowed mode only utilizes the primary graphics card! OCCT offers a demanding GPU stress test as FurMark is a very intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. If you're testing a multi-GPU configuration, FurMark needs to be used in full-screen mode. App is portable and straightforward utility that displays technical info about your video card. The latest version of MSI Kombustor can be downloaded from this link: FurMark Video Stress Test - free from here: Click "Go" to start the test (Looks like it's "BURN-IN test" now) - Run the test until the GPU temperature maxes out So I decided to run a Burn-In test on my GPU with FurMark. ABOUT MSI KOMBUSTOR. 3 - Extreme stress test for Geforce and Radeon graphics cards. won't last 20 Get Cinebench. Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a perfect stability and stress test tool (also called GPU burner. I'll work on power efficiency once I get a good stable number). Select your resolution from the drop-down menu, and enable the following Stick to the standard burn-in test, but keep an eye on HWMonitor and/or SpeedFan—FurMark gets your GPU very hot, very quickly. Games can stress the GPU in ways that aren’t always caught in stress tests. Is it the best test to use? any other recommendations? in" a GPU unless you Test it with other options, general rule is less the window size greater the performance. Net delivers real time 3D graphics softwares and tutorials: GPU benchmarks, real time 3d prototyping, 3D graphics programming with OpenGL and Direct3D, ATI and NVIDIA graphics cards reviews. 1 and the new Furmark, only the 2. e. But when I run the "Burn-in test", all I see is the test graphics, while the text on the top and bottom are gone. While furmark is the prime95 for GPU's, both prime95 and furmark, when used properly, can help expose borderline or flaky hardware. FurMark , ekran kartlarını test ederek karşılaştırabilmek ve bu sayede bilgisayarınız için en uygun ekran kartını bulabilmek için üretilmiş başarılı bir ekran kartı test programıdır. Video Card - Stress Test with Furmark Forum: furmark test picture looks different? bad gpu? I was doing a furmark test and noticed that the picture of the furmark A small utility FurMark is designed to conduct stress tests of video cards that are compatible with the technology OpenGL API. For that, I thought to do a stress test using FurMark or OCCT (Thinking most on FurMark than OCCT), but, on my reads I found, FurMark can harm the GPU on the process, cause, this software takes the GPU to the limits. Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a good stability and stress test tool (also called GPU burner) for the graphics card. since it's sub 65 during a heavy stress-test. Furmark is alright, but it's like the Prime95 of GPUs. After testing has finished, FurMark will display a score. This program requires a modern graphics card (GeForce 6 and higher, Radeon 9600 an higher or a newer Intel HD Graphics adaptor). It said to start with memory and go up 100MHz and run the Furmark Benchmark test until it crashes. FurMark Downloads Gallery Support Forum Geeks3D. The foolowing tests are available in the latest version: FurMark based stress test (OpenGL 2. Aside from the test graphics on the screen, I can see the gpu specs and benchmark on top and the temperature graph on the bottom. FurMark - GPU stress test and graphics card benchmark. FurMark is a utility that allows you to benchmark and stress test your GPU, or graphics card, so that you can determine how well it operates under heavy loads. Additional Tools for GPU Stress Test: #1) FurMark. Unlike the “CPU Benchmark Online”, here you can manually set the required load, as well as stop or resume testing at any time. DOWNLOAD. If you have a newer graphics card and you want to push it as hard as it can go, FurMark is the program you want to run. UserBenchmark will test your PC and compare the I have been reading and following their directions that I can overclock my gpu and memory. Fur rendering is adapted to overheat the GPU and is the reason why FurMark is a perfect stability and stress test tool (also known as GPU burner) for graphics card. Here is a list of PC Stress Test free software to test computer hardware, CPU, GPU, memory, physical disk, optical drive, chipset, ports, printers, sound card, etc, on your Windows 10/8/7 computer. 20. Regardless of the OpenGL 3. My GPU is XFX Radeon HD7870 Double Dissipation and never hits over 80°C The highest it got is 78°C whilst playing Space Engineers for 5 hours on MAX settings. Max CPU temp on any core: 84 degrees C Max CPU fan speed: 3654 RPM I wanna know if my GPU is the culprit of a problem that I've been dealing with for a while. In fact, it  Dec 21, 2015 Does your graphics card pump out pretty pictures at the level promised by the To answer these questions, we turn to stress testing: Making sure that all of Tags: best programs, best software, computer stress test, furmark,  Sep 5, 2018 I tried Stressing my GPU using *OCCT (not GPU-Z) and it would cause on running Furmark stress test my gpu temps go up to 70 degrees but  May 27, 2010 Furmark is capable of putting so much stress on your video card that it may crash. Apr 12, 2019 The most common free GPU benchmark/stress test you'll see really no need to run FurMark as well, unless you really want to torture your PC. Thanks to continuous updates for the latest GPUs, an easy-to-use interface, and the unparalleled ability to weed out instabilities and push GPUs to their limits, FurMark has remained relevant since its release. TessMark based tessellation test (OpenGL 4. FurMark 1. A GPU stress test is any software or application designed to push the temperatures (and subsequent cooling) of your GPU to the maximum, meaning fully utilized processing power and the absolute threshold limit of electrical power usage. If it helps, I'm running a 4690k at 1. OCCT is the most popular CPU/GPU/Power Supply testing tool available. Benchmark mode or stability / burn-in test mode (for overclockers) GPU temperature monitoring and recording in a file Download Furmark from the link below. For our combined stress tests, we use Prime95 (with AVX or SSE, as well as Small FFTs) with MSI Kombustor and FurMark, our suite's two most challenging graphics workloads. Net 2. Furmark is an OpenGL based GPU stress test intended to produce the absolute worst case scenario for an OpenGL based graphics engine. FurMark is a stress testing tool for GPU. . “CPU Stress Test Online” or simply “CPU Load Test” is a processor performance test allowing you to check online your processor at heavy load. 6. If you fully load the CPU with IBT, Furmark will be bottlenecked and the GPU load will be much less than 100% – on my system it was around 75%. Feb 9, 2018 Why Do We Need to Run Stability & Stress Tests? GPU-Z is the established go- to application for graphics card monitoring. The high power draw required by FurMark puts under pressure the GPU  Mar 17, 2014 The FurMark benchmark tool can put your overclocked GPU under stress while rendering furs on your screen. Make tests and stress your in handy to maintain the performance and stability of the GPU functions. 9. Using these tests you can diagnose FurMark is simple and fun video card benchmark, that also can (with help of GPU-Z) test system stability. Furmark is a stability and stress testing tool designed especially for graphics cards and runs a very intensive “Fur” rendering algorithm which is very good at pushing the GPU to its absolute limits. FurMark is simple to use and is free. The most important thing to do to after buying a new PC is to stress test. One tricky part to combined CPU+GPU stress testing is that FurMark needs some free CPU cycles in order to stress the GPU properly. Quick overview of the fur mark GPU Stress Test Benchmark. Furmark seems like the PRIME95 of the video cards. Jan 23, 2018 A new version of FurMark, the popular GPU burn-in utility,  Jul 4, 2019 Download FurMark. Stress testing GPU means putting the GPU under immense pressure in order to test the capacity upto which the GPU can The Basics of a GPU Stress Test. Mar 22, 2017 Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a perfect stability and stress test tool (also called GPU  Jul 28, 2013 cross-platform GPU stress test and OpenGL benchmark. 'START' button runs stress test. Jul 4, 2019 Fur rendering is especially adapted to overheat the GPU and that's why FurMark is also a good stability and stress test tool (also called GPU  FurMark - GPU Stress Test Information Furmark is an intensive OpenGL benchmark that uses fur rendering algorithms to measure the performa. 2). Furmark 1. Game in question is heroes of might and magic V ( and sequel VI also ) Stress CPU Use your processor or even a specific number of processor cores to full capacity. This program is first and foremost a stress test to generate as much heat as possible to test thermal stability. It makes it possible to push the GPU to the max in order to test the stability of the graphics card and PSU also, leading to maximal GPU and VRM temperatures. FurMark. Video Memory stress Test is specifically designed for this purpose, and it's quite similar to MemTest86+. FurMark is a lightweight but very intensive graphics card / GPU stress test on Windows platform. This is the default mode. BSOD analysts will recommend you use Furmark to test the performance and stability of your Personally i’ve had the best luck using Heaven to test GPU stability, and just adjust my overclock settings to get the highest score in the test. It makes it possible to push the GPU to the max in order to test the stability of the graphics card (and the PSU too!) leading to maximal GPU and VRM temperatures. Website: FurMark #2) HWiNFO64. FurMark OpenGL benchmark test will accurately measure the performance of the graphics card using fur rendering algorithms. Furmark is an intensive OpenGL benchmark system used for stress testing GPUs of a computer. Max GPU temp: 74 degrees C (in Furmark); 61 degrees C (in HWInfo) Max GPU fan speed: 3642 RPM in HWInfo; I didn't see a value for this item in Furmark. exe using the GPU. Then it says to test the GPU clock going up 10MHz every test as well until it crashes. It has a simple user interface that can be used to set the various options and launch the test options. You can save choosen log to file with using 'Save log' option or clear log with using 'Clear log' option. My friend has asked me to repair his HD 4890 2GB, done the FurMark v1. Downloading FurMark 1. HWiNFO64 can perform the task of Graphics card monitoring. FurMark is one of the most used stress test tool for graphics cards. FurMark is an extremely intensive. 7. Write Test File Check how your system behaves when faced with dwindling disk space. A long time ago when I ran OCCT GPU test, I saw Furmark. Your doctor may recommend a test with imaging, such as a nuclear stress test or echocardiographic stress test, if an exercise stress test doesn't pinpoint the cause of your symptoms. Run either 3DMark or Furmark (the stress-test tools we recommended earlier) and check your current performance: This gives you a great reference point for your performance, temperature, clock speeds and FPS. etc. benchmark that runs fur rendering algorithms to measure the performance of the graphics card. How do you tell if your graphics card is overheating? By watching a furry donut for a few seconds. The way you determine the improvements made by hardware updates and the changes in their configurations is through running the benchmarks and stress tests in your PC. A new update of your favorite GPU burner is ready. It lasted about 20 seconds, max. com FurMark - latest version for Windows. Contains FurMark, TessMark. The program uses a special algorithm that allows you to test the video card in stress mode, warming it up to the maximum. Conclusion. While Furmark isn't usually recommended to be used, it DID help the OP prove that his old PSU was dying. So you are fine, don't worry, and Furmark is a great stress test for your GPU, if you overclock for instance you can then use Furmark to test the stability of your overclocks by running it for, say, half an hour or so and making sure your temps are below 85-ish whilst being stable. Any change in Stress Test settings, will result in different result considering Temperatures and heat on GPU. Step 2 - Overclock the GPU chip i would think that a multi-node - cpu/ gpu - system is merely a collection of single nodes, with the option of collectiveness - dependency and inter-dependency i would also think that the stress test is most interested in temperature and power stability, at max load hence, i would conclude that a) inter-dependency is not really critical as part of the test b) any test that can push all nodes FurMark is a very intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. 1 render path is used. FurMark: VGA Stress Test, Graphics Card and GPU Stability Test, Burn-in Test, OpenGL Benchmark and GPU Temperature | oZone3D. FurMark is a popular VGA stress test (graphics card burn-in test) as well as an OpenGL benchmark. Download Geeks3D. exe. So, FurMark proves to be the perfect stability and GPU stress test tool (also called as GPU burner) for your graphics card. The number of GPU tests grows with the new versions of the tool. However, you can enlarge it will give different results. exe file, and follow the installer choosing the default values. Windows 10: FurMark - GPU Stress Test Discus and support FurMark - GPU Stress Test in Windows 10 Tutorials to solve the problem; Very Nice Program I gave it a shot although I was thinking why am I doing this right now *Smile When I am not playing any games at this time the Fans Hello Ok i have been puzzling this issue for a month or so now I have in the past managed to use Furmark to stress all 4 GPU's of my Dual GTX 295 Quad SLI set-up but recently whenever i try and use Multi-GPU Furmark it will only stress 1 GPU, this happened when both GTX 295's were installed an FurMark is a very intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. 0 adds the support of latest NVIDIA GeForce and AMD Radeon cards, fixes the postfx bug (when you press the P key during a stress test) and fixes a typo in the warning message before the stress test. Features and highlights. . 13. Prime95 stress test [Torture Test options set to Blended (tests some of everything, lots of RAM tested)] Ran test for 30 minutes. Though do occasionally use heaven 3 for that purpose. 0). OCCT uses Furmark for GPU test. Puts your video card to a rough test case by stressing out your GPU as much as possible to unveil its true potential with the possibility to compare results online FurMark - GPU Stress Test Furmark is an intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. Furmark is a stress test and tries to draw the maximum out of the video card, like a stress test should. Run the Prime95 executable and select "Just Stress Testing" when asked. It is a lightweight application and supports Windows OS. Performing a stress test is simple: Download the software and unzip the files to your desired location. BSOD analysts will recommend you use Furmark to test the performance and stability of your GPU if it is suspected of causing BSODs. More specifically, OCCT uses a modified/differently optimized version of Furmark. But yeah, its possible to pass FurMark and the Unigine tests but still have an overclock that isn’t stable. Best way to test are one game I came accros over the years which seems to expose gpu unstability really well and 3dmark06. Benchmark ran with the GTX 660TI EVGA I'm trying to stress test my 4690k, and I'm wondering if the Furmark CPU burner is as good as, say, using Intel Burn Test, AIDA64, and whatever else everyone recommends. FurMark: VGA Stress Test, Graphics Card and GPU Stability Test, Burn-in Test, OpenGL Benchmark and GPU Temperature That’s Furmark. Write down these numbers, or take a screenshot — it’ll help you compare later. Furmark is an application designed to stress the GPU by maximizing power draw well beyond any real world application or game. Clean. Fur rendering is especially adapted to overheat the GPU and that's If you are performing tests on multi-GPU configurations, you need to run FurMark in full-screen mode, as windowed mode only uses the primary GPU. This tool can be used to see if your GPU is ready to deliver the performance that is required to run modern graphics power hungry computer games. The fact that the modern video cards are so aggressive with voltages-clock speeds & cooling that they can't afford the worse case scenario, is not Furmarks fault. Most games being DirectX, you'll never see the type of load that Furmark produces. Fur rendering is especially adapted to overheat the GPU and that's FurMark - GPU stress test and graphics card benchmark. HeavyLoad performs complex calculations to simulate the load on your processor. GPUs will generally fail the FurMark stress FurMark is a very intensive OpenGL benchmark that uses fur rendering algorithms to measure the performance of the graphics card. C'est un programme utile pour s'assurer que le sur-cadencement de ce composant Video Card Stress Test with Furmark: If you having display problems and your trying to determine if its a graphics card issue, you can stress test that card with software called Furmark, when you install the software be very careful of the settings you use to burn test your graphics card. I ran the test using the 1080p presset so you can comment your own score using the same preset. It’s easily the most demanding GPU stress test available, and its also free. I wanted to fluff up a table with some furmark abuse of video cards, please post the results for 1920x1080 and AA off, and i want the score and temperature FurMark: VGA Stress Test, Graphics Card and GPU Stability Test, Burn-in Test, OpenGL Benchmark and GPU Temperature | oZo… if the card has more then 1 fan, please indicated that as well 'Test logs' tab displays test logs for running stress test. It is available for free. 0 support by the Catalyst 9. Jan 7, 2019 A GPU stress test is an application used to push your GPU to its absolute If you choose to use only one, however, we recommend FurMark. OCCT offers a demanding GPU stress test as well. - - - Updated - - - OK. Once your GPU passes Furmark is an application designed to stress the GPU by maximizing power draw well beyond any real world application or game. How many hours should I stress Test my graphics card for? Thinking of using Furmark. HeavyLoad writes a test file to your hard disk with variable speed. furmark gpu stress test