Would 55nm open up single pcb possibilities? nVidia is experienced with the sandwich cards though. Seems they'd go with what they know. Will be a good card in any case. One thing I love about nV is the decent scaling. Should be interesting..
They're already using a 14 layer PCB due to the routing necessary for the 448-bit memory bus. Even though the GTX280 is built on the same PCB with a 512-Bit memory bus, I doubt there's enough room left over to add the necessary lines for tying a second GPU into power, memory & PCIE slot plus adding an NVIO chip and ITS traces. My bet is the sandwich style as well.
Umm, no. 3Dfx only ever used SFR (Split Frame Rendering). nVidia and ATI both use AFR. nVidia tried SFR with their cards years ago, and for whatever reason, decided not to use it. So actually, all nVidia got out of the deal was being able to call two cards pushing one monitor SLI. You're right about the reason nVidia used to be farther ahead in scaling, though. They did start way sooner than ATI, but mostly just because they had more money to sink into the technology, I'm pretty sure. BTW, with alot of games these days, the ATI cards are scaling as well as the nVidia cards, and better sometimes.Originally posted by: FalseChristian
nVidia's got better scaling because they bought up 3Dfx and their SLI technology and they've had alot of time to tweak it. ATI had to do their implementation by hand.
[[]]Originally posted by: Wuzup101
That being said, at the rate these cards are growing at (size wise), they are going to have to start building parts of them in 5.25" enclosures and connecting them to the main "card" via cables.
that is a lot more advanced then SFR... it doesn't split the frame, it splits the individual calculations.Originally posted by: Zap
SFR might see a resurgence... Lucid Hydra anyone?Originally posted by: myocardia
Umm, no. 3Dfx only ever used SFR (Split Frame Rendering). nVidia and ATI both use AFR. nVidia tried SFR with their cards years ago, and for whatever reason, decided not to use it.
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