Nvidia Fermi: Less active ALUs on the Tesla cards
Slowly more information about Nvidia's Fermi is uncovered: Now the board specifications of the Tesla Compute graphics cards reveal the ALU frequency and that not all cores of the GPU are used.
Nvidia's Compute graphics cards Tesla C2050 and C2070 which are based on the Fermi architecture will apparently have access to fewer cores: The GPU with 512 cores will, according to the board specifications of Nvidia, be able to make use of only 448. The ALU frequency is also revealed: 1.25 GHz respectively 1.40 GHz. The GDDR5 memory is supposed to run at 1.8 GHz respectively 2.0 GHz - this would match the rumors about a 384 bit interface, which is also mentioned in the document.
This new array of information gives room for new speculations: Either Nvidia reduces the amount of active ALUs in order to reach a TDP of 225 watt or the yield rate of fully functional GPUs is just too low. The same procedure can be expected for the desktop graphics cards of the Geforce family since this would allow Nvidia to offer a slightly weaker model and counter the problems mentioned above at the same time.
More articles related to Fermi:
• Nvidia GF100: Fermi running in SLI setup
• AMD presentation attacks Nvidia's Fermi
• Nvidia GF100: Fermi Geforce graphics cards running Unigine Heaven DirectX 11 benchmark
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