Wonder if they've done aggressive power gating for the DP stuff?
From the Hexus preview:
Because 250W is very good for such a monster die: this might explain at least part of how they managed that. See if someone does power consumption benches with and without 1/3 DP. Of course, games don't use DP* so with the Titan you're still paying for die space which isn't 'useful'.
*or I'm fairly sure they don't but if the card control panel etc. can set the card to, say, 600MHz with and without 1/3 DP it should actually be able to directly compare whether any games uses DP.
From the Hexus preview:
The $999 asking price appears to be prohibitive to the gamer but can also be construed as a Tesla K20X on the (relative) cheap. This fact is further substantiated by the knowledge that, just like Tesla K20X, TITAN can run double-precision compute at 1/3rd of single-precision speeds, leading to over 1TFLOPS DP throughput. However, being a gamer's card at heart, TITAN's DP rate is set to 1/24th of SP, just like GTX 680, as no games use double-precision calculations. The full 1/3rd ratio can be set via the control panel, yet doing so forces the GPU's clocks down. And no gamer wants that, right?
Because 250W is very good for such a monster die: this might explain at least part of how they managed that. See if someone does power consumption benches with and without 1/3 DP. Of course, games don't use DP* so with the Titan you're still paying for die space which isn't 'useful'.
*or I'm fairly sure they don't but if the card control panel etc. can set the card to, say, 600MHz with and without 1/3 DP it should actually be able to directly compare whether any games uses DP.
