Not long ago I was able to buy a pair of ATI HD 2900XTX. They were looking a bit used, but still, not often somebody have an opportunity to buy at least one of those cards, so I was pretty exited.
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So, what can I say - they both has the same revision and were made in the same day - Rev. 15 dated 14-th of December 2006, both GPU's were made on week 48 2006:
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Holder on one of the cards was cut by previous owner, maybe there was not enough space in his computer case to run them in crossfire mode, who knows.
GPUz recognize them as ATI Radeon 2900XT and shows weather on Mars instead of correct GPU and memory clocks:
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Videocard works in PCI-E 8x mode because I installed it in second slot on my test motherboard. However RivaTuner show correct clocks - for GPU 810 Mhz, for memory 2000 Mhz, so it's definately radeon 2900XTX:
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When I disassembled them I found no dust on radiator and on the fan, absolute zero, like new ones. Black spots on copper radiator which I thought was dust it fact were remains of soldering between some of heat pipes and fins. Both cards were not able to run 3D applications with 10.2, 13.4, 9.11 drivers, but works fine with 7.6 driver under Windows XP x86 with original BIOS. From the beginning cards showed some artifacts, absolutely the same on both cards, but after clean install of 7.6 driver (before I installed them one by one without deleting previous one) picture become clean in all 3DMarks, here are some pics:
And final 3D Mark score:
I want to say, that this long cooling system is much better than retail one, only 50*C with 45-50% RPM. On 100% it is more loud then my vacuum cleaner and hair dryer together
And even more - on 100% RPM because of vibrations card jumped from PCI-E slot on my bench system
So I did not tested it on 100% more thoroughly, I don't have bench table and without it it's impossible to fix card in a PCI-E slot properly. Hope it was interesting, later on I will upload original BIOS of one of my cards.