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According to Gupta, the second Kepler implementation will include a lot of capability not present in these first gaming-oriented products. In particular, it will have a lot more double-precision capability (which is not required for most graphics applications) and include new compute-specific features. And of course the raw power of these chips will be quite a bit higher than the mid-range graphics version introduced this week.
Although the company is not yet giving any of the speeds and feeds on the second Kepler, one would expect the core count and peak double precision performance to be two to three times higher, and memory bandwidth to get at least a 50 percent bump. Clock speed will almost certainly be whittled down from the current 1.3 GHz on the Tesla M2090, but perhaps not so aggressively as in these first Kepler gaming parts.
Presumably, the NVIDIA will stick with its 225 watt power envelope for the Tesla lineup, so the engineers just have to balance the core count and clock to land on that thermal design point. Given that power ceiling and the core count increase, NVIDIA should be able to deliver a Tesla GPU with between 1.3 and 1.5 teraflops of double precision performance. On the other hand, there is probably a case to be made to also offer less performant parts that consume less power.
In any case we'll know soon enough. NVIDIA will probably do their paper launch of the HPC Kepler at the company's GPU Technology Conference in May. And according to Gupta, the company is on track to put this version into production in Q4.
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