I have some strange issues with the 7950 in my 2008 Mac Pro. I did some tests the last couple of days: With Lion (10.7.5, fresh install): no direct support, only 2D and one screen active (DVI). After installation of Sapphire's drivers everything SEEMS fine. Dual monitor support works (DVI + mini-DP), resolution switching etc. Then I started some 3D benchmark testing and it turned out that NONE of them worked.
'OceanWave' couldn't find an OpenCL device, 'Galaxies' hangs on application launch, 'Heaven' and 'Valley' would only show some artifacts. With Mountain Lion (10.8.2) almost the same: Sapphire's drivers SEEM to work at first (2D), but same issues with 3D. Mountain Lion (10.8.3) comes with build in drivers for the 7950 and the 2D part works 'out of the box'. 3D issues remain though. With Mavericks all 2D and 3D tests are working fine. The 7950 ist recognized as OpenCL- and OpenGL device and all 3D benchmark tests are going through.
The scores are way to low in comparison to the websites reviews on barefeats, architosh or macrumors. Can anyone confirm these issues with the Mac Pro 2008 and the Sapphire HD 7950 Mac Edition? Maybe I just have a broken card. That post should really go into a new thread created by you (from the top of forum discussion) and not onto a 5 month old thread, one that should have been marked solved (or something). So we'll see if a mod does that for you, moves your post to a new thread later today. It sounds more like an issue with those apps and test suites more than anything, have you checked via google for '7950 Mac + app+name'? And did Barefeats test any of those apps?
Architosh: Feature Reviews: Piranesi 3 For Mac Torrent
Performance of 7950 in a 3,1 is hampered as stated above but its PCIe 2.0 bandwidth, an issue with any gpu in that system when compared to 2009 and especially 2010-12 models that have PCIe 2.1 and later, one of the real changes in the 2010 was to update and improve on PCIe 2.x and EFI-64 firmware. 2008's seem to have an abundance of personality issues with sleep, power management, both out of the gate and then with Mountain Lion 10.8 (but improved on with 10.8.5). 2008 MacPro 2 x 3.2ghz Quad 32gb Ram Sonnet Tempo SSD Pro with 2 x OCZ Vector in RAID 0 2 x Sapphire ATI 7950 Mac Edition I have tested 10.9, 10.9.1, and 10.9.2 Beta 1. I have had poor results in OS X since purchasing these cards. I have run Aperture, FCP X, Furmark, Valley, Heaven, and LuxMark. I have also tested in Windows 7 x64 and had great results.
I have experimented withg all different flashes to the second bios without any luck. The new boost bios ATI released for reference cards resulted in 1900 LuxMark sala scene score in Windows 7, only 500 in OS X. I created a stable OC profile with EFI that could hit 9000 on the 3DMark 11 performance test, 2500 LuxMark.
Same bios hit only 1500 in OS X on LuxMark. The hardware is perfectly capable in Windows 7, so it seems to be driver bound. The cards never spin all the way up or reach full load in OS X.
Barefeats isn't using 2008 MP 3.1's. The issue is the '08, but I don't believe a hardware bottleneck. Soemhow the drivers on 3.1's are messed up. Barefeats ususally uses 2010 MP's in their tests. ' All Mac Pro GPUs above were in a in a 'Mid 2010' Mac Pro 3.33GHz Hex-Core. The GeForce GTX 680MX is the only exception - embedded in the 'Late 2012' (27') iMac 3.4GHz Core i7.
All Macs were running OS X 10.8.3.' Rolling back to 10.8.2 will be an issue as I don't have an alternative GPU to use until the drivers are installed. I did run 10.8.4, beta 10.8.5, and 10.8.5 before jumping to Mavericks DP's. They had the same poor performance. Jason, Same position, same setup, same problem I have a 7950 Sapphire and a 5870. I am now thinking both cards are being throttled and i am in the verge of picking up an older Mac Pro 2,1 to see if its just a 3,1 problem.
I have a Mac 3,1 2 x 3.2ghz running OSX 10.9.1. In fact, right now the 5870 is beating the 7950.it makes no sense. Someone will come by and edit your post, to remove serial numbers. A 2,1 will not support a 7950, you need 64-bit EFI and drivers and possibly 10.8.x and above which is not supported on 2007 2,1. And yes the 3,1's have had some performance, that is not seen in a 4,1 and above.
has these benchtests September 13th, 2013 - CRAZY FAST GPUs for Mac Pro: July 25th, 2013 - Inject New Life in your Old Mac Pro with a July 12th, 2013 - (After Effects, OctaneRender, LuxMark, DaVinci Resolve) - includes GeForce GTX 770s. May 30th, 2013 - = Faster Pro App Rendering. (Features Octane and After Effects rendering with dual GPUs; added DaVinci Resolve on June 5th.) May 10th, 2013 - Do the than on the 2009 and 2008 Mac Pro? April 5th, 2013 (Appended) -: Sapphire Radeon HD 7950 for Mac versus 'big fish' GPUs (Added full results for the Quadro K5000 and a flashed Radeon HD 7970.) March 22nd, 2013 - PART DEUX: other Mac Pro GPUs (running StarCraft, Diablo, Team Fortress, FCPX, Premiere Pro, Photoshop, and LuxMark) March 19th, 2013 - REVIEW: versus other Mac Pro GPUs (running DaVinci Resolve, Motion, OceanWave, Heaven 4, Valley, Civilization, and Dirt). Apple Footer. This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums.
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Architosh: Feature Reviews: Piranesi 3 For Mac Pro
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Architosh Feature Reviews Piranesi 3 For Mac
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