Tader Posted August 28, 2009 Share Posted August 28, 2009 I tried the OpenCL benchmark to see how much help my (only) video card would be (nVidia GeForce 9700 GS 512 MB), turned out, it is not found as an OpenCL device! ........................................................... .................. OpenCL Bench V 0.25 by mitch ........... ...... C2D 3GHz = 12 sec vs Nvidia 9600GT = 0,93 sec ...... ... time results are not comparable to older version! ..... ........................................................... Number of OpenCL devices found: 1 OpenCL Device # 0 = Intel(R) Core(TM)2 Quad CPU @ 2.40GHz Device 0 is an: CPU with max. 2432 MHz and 4 units/cores Now computing - please be patient.... time used: 7.652 seconds Now checking if results are valid - please be patient.... :) Validate test passed - GPU results=CPU results :) Snow Leopard H.264 Hardware Acceleration and OpenCL Requirements, The list of supported GPUs include: Geforce 8600M GT GeForce 8800 GT GeForce 8800 GTS Geforce 9400M GeForce 9600M GT GeForce GT 120 GeForce GT 130 Radeon 4850 Radeon 4870 So, I guess there is no hope for a 7-series card to ever be supported... Did you had more luck with your video card(s)? Is this a good reason to upgrade? Link to comment Share on other sites More sharing options...
Tommy Posted August 29, 2009 Share Posted August 29, 2009 I tried the OpenCL benchmark to see how much help my (only) video card would be (nVidia GeForce 9700 GS 512 MB), turned out, it is not found as an OpenCL device! ........................................................... .................. OpenCL Bench V 0.25 by mitch ........... ...... C2D 3GHz = 12 sec vs Nvidia 9600GT = 0,93 sec ...... ... time results are not comparable to older version! ..... ........................................................... Number of OpenCL devices found: 1 OpenCL Device # 0 = Intel(R) Core(TM)2 Quad CPU @ 2.40GHz Device 0 is an: CPU with max. 2432 MHz and 4 units/cores Now computing - please be patient.... time used: 7.652 seconds Now checking if results are valid - please be patient.... :) Validate test passed - GPU results=CPU results :) Snow Leopard H.264 Hardware Acceleration and OpenCL Requirements, The list of supported GPUs include: Geforce 8600M GT GeForce 8800 GT GeForce 8800 GTS Geforce 9400M GeForce 9600M GT GeForce GT 120 GeForce GT 130 Radeon 4850 Radeon 4870 So, I guess there is no hope for a 7-series card to ever be supported... Did you had more luck with your video card(s)? Is this a good reason to upgrade? Yah, all 7xxx series are out of luck with OpenCL, mine is no exception. Link to comment Share on other sites More sharing options...
MacProUser83 Posted September 3, 2009 Share Posted September 3, 2009 whats the interpretation of this? ........................................................... .................. OpenCL Bench V 0.25 by mitch ........... ...... C2D 3GHz = 12 sec vs Nvidia 9600GT = 0,93 sec ...... ... time results are not comparable to older version! ..... ........................................................... Number of OpenCL devices found: 2 OpenCL Device # 0 = GeForce 9800 GT Device 0 is an: GPU with max. 1790 MHz and 112 units/cores Now computing - please be patient.... time used: 0.509 seconds OpenCL Device # 1 = Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz Device 1 is an: CPU with max. 3060 MHz and 4 units/cores Now computing - please be patient.... time used: 5.979 seconds Now checking if results are valid - please be patient.... :) Validate test passed - GPU results=CPU results :) Link to comment Share on other sites More sharing options...
yuxiaolong Posted September 3, 2009 Share Posted September 3, 2009 Hi! I have a little question: How did you manage to get your 7900GS 512 MB working under Snow Leopard (Not for OpenCL but for the resolution and Quartz)? All the methods I used before failed under Snow Leopard. Sorry, I know this is not directly related to your topic... Many thanks in advance. Link to comment Share on other sites More sharing options...
aprodigy_ Posted September 3, 2009 Share Posted September 3, 2009 opencl needs cuda capable nvidia cards! @beto2...: read the output over at yours again, compare your output to the one posted up and think about it once again - you'd be able to find out Link to comment Share on other sites More sharing options...
Nicklas Posted September 3, 2009 Share Posted September 3, 2009 is there any reason to upgrade? is opencl a good reason? or its the same???? Link to comment Share on other sites More sharing options...
vividvew Posted September 4, 2009 Share Posted September 4, 2009 Hi! I have a little question: How did you manage to get your 7900GS 512 MB working under Snow Leopard (Not for OpenCL but for the resolution and Quartz)? All the methods I used before failed under Snow Leopard. Sorry, I know this is not directly related to your topic... Many thanks in advance. I have a BFG 7900GS 256MB and the EFI string method works perfectly for me. The EFI string for a 512 would not be quite the same so you will need to get OSX86Tools and hunt around in it a little in Leo to get it to show you your EFI string. Then in /Extra/com.apple.Boot.plist insert like so <key>device-properties</key> <string>your-string</string> do this right before </dict> Link to comment Share on other sites More sharing options...
yuxiaolong Posted September 4, 2009 Share Posted September 4, 2009 I have a BFG 7900GS 256MB and the EFI string method works perfectly for me. The EFI string for a 512 would not be quite the same so you will need to get OSX86Tools and hunt around in it a little in Leo to get it to show you your EFI string. Then in /Extra/com.apple.Boot.plist insert like so <key>device-properties</key> <string>your-string</string> do this right before </dict> Thank you very much for your answer! I had no luck with EFI strings in the past but your post made me want to test this solution again... It didn't work at first but I flashed my card so Darwin can detect my 512MB. And now... it works perfectly on snow!!! (before on Leo 10.5.6, I used NvinjectGO 512, it was fine, the vram was properly detected by Leopard but I had some random freeze, all my problems are solved now...) Thank you again Link to comment Share on other sites More sharing options...
el_charlie Posted September 9, 2009 Share Posted September 9, 2009 The reason for a 7900 not working with OpenCL is the architecture. Geforce series 8 an later, and Radeon HD 3XXX and later support a unified shader architecture. With this architecture, the GPU no longer has Pixel/Vertex units. Instead, it has many unified units that can render pixels/vertex. This new architecture is so simple that it can be useful for GPU computing (CUDA on Windows, OpenCL on Mac/Linux). That's why your 7900 is not supported. The difference between a high-end series 7 card (7900models) and a series 8 card (8800 models) is HUGE!!! A 8800GT running on directx 9 (it supports DX10 but the series 7 don't) is as almost four times powerful than a 7900GT. In fact, a mainstream model like a 8600GTS is as fast as a 7900GS. So, is a hell of a upgrade. If you can find a cheap 8800GT, GET IT. Nvidia rebranded the 8800GT as a 9800GT, and a improved version, the 9800GTX/GTX+ are now rebranded as a GTS250. So, technically, the 8800GT model is not as old as you may think. Cheers!! Link to comment Share on other sites More sharing options...
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