Another excellent review Chris & Thanks!!!
Nvidia is limiting its GTX 670s to three-way SLI
Ditto on the GTX 570 so no surprises there.
But whereas the 680’s graphics processor employed all eight of the chip's SMX clusters, the 670 utilizes seven. The eighth is disabled...
Hmm...I wonder if there's a 'way' to enable via a BIOS ... let's call it an 'update'?
GTX 670 clock comparisons:
Ref Core (915 MHz), GPU Boost (980 MHz), and Memory (6008 MT/s) ; reference slower than GTX 680
OC Core (1061 MHz), GPU Boost (1140 MHz), and Memory (6460 MT/s) ; beats GTX 680
Clearly somewhere in the middle+ to closer OC listed above matches the GTX 680 performance.
No doubt that PCB is truly bizarre and to me unexpected, and I really don't know what to make of it. Those who will water block it 'should' get a break with less metal, but it's going to IMO look weird.
The (one DVI-I and one DVI-D) is a tad interesting, but fortunately they appear to both be Dual Link.
The stance with nVidia on PCIe 3.0 on the
SB-E is driving me batty. First the GTX 680 'can' run PCIe 3.0 then a driver update later it cannot. Recently, your review with the GTX 690 it 'does' run PCIe 3.0 -- next week?! Now the GTX 670 PCIe 2.0 out of the box. Hmm...I wonder if the same GTX 680 PCie 3.0 'tweak' works to get PCIe 3.0 on the GTX 670's?! BTW - I know in 3-WAY it won't matter (PCIe 3.0 vs PCIe 2.0) -- that's not my point! However, PCIe 3.0 vs PCIe 2.0 in 4-WAY GTX 680 does matter in the resolutions (we) use 5900x1080 - proven fact.
All in all for most folks as of now the GTX 670 is an awesome deal -- we'll need to see the Prices & Performance of the GTX 660's to know what to buy. Since the majority of folks are using HD (1920x1080) monitors it seems the GTX 670's have found their home.