Tuesday, December 13th 2011
GeForce Kepler 104 and 100 GPU Specifications Compiled
A quick stroll through our previous article about how the GeForce Kepler family of next-generation GPUs is laid out, would tell you that GeForce Kepler 104 (GK104), is going to be NVIDIA's answer to AMD's Tahiti. GK104 will be a high-performance (≠ high-end) GPU by NVIDIA that will have many of the features that were reserved for its previous high-end GPUs (such as a 384-bit wide GDDR5 memory interface), but will not be NVIDIA's most powerful GPU in the series. The throne will be kept empty for GK100, which will comply with NVIDIA's "go all in" design ideology for high-end GPUs.
3DCenter.org compiled a few specifications of the GK104 and GK100. They go like this:
GK104
Source:
3DCenter.org
3DCenter.org compiled a few specifications of the GK104 and GK100. They go like this:
GK104
- 640 to 768 CUDA cores
- 80 to 96 TMUs (depending on what the CUDA core count ends up being)
- 384-bit GDDR5 memory interface, 48 ROPs
- Built on the 28 nm TSMC process
- Products based on this will launch in the first quarter of 2012
- 1024 CUDA cores
- 128 TMUs
- 512-bit GDDR5 memory interface, 64 ROPs
52 Comments on GeForce Kepler 104 and 100 GPU Specifications Compiled
Something worth mentioning is that Kepler seems to be made of 64 SP wide SMs*, as oposed to GF100/110's 32SP or GF104's 48 SPs.
This means better area performance, and better perf/watt, following the improvement seen in this regard between GF100/110 and GF104/GF114.
* Assumption I make based on the fact that the SKUs are 768 SP and 640 SPs, with the most probable config being 2x64 SP clusters disabled. 128 SP wide clusters are not likely, and 4 clusters disabled are definitive no.
Also 768/64 = 12 clusters -> 12 x 8 TMU == 96 TMU -> 2 disbled == 80 TMU.
HD7900 launches Jan 9th.
GK104, somewhere in Q2 2012. And it's already been reported GK100 is towards end of 2012.
So how will this even scratch HD7900?
The thing that caught my eye was "Products based on this will launch in the first quarter of 2012" so less than three months? Interesting that they’ve all of a sudden found an extra two months, at least moved it up from the last reports. Hum, wonder if Nvidia is seeing that if there late to the party by more like 5 months they see more of their fan base stumbling out the door long before they find a place to park.
Tells me Nvidia will come to market with whatever they can squeeze from the yields TSMC process can give, them in the next two months not waiting for good yield of top shelf chips.
you wanna bet?
Of course if you're talking about being closer to reference then the HD 5970 4GB also tipped the scales at ~$1100. (Sapphire Toxic, XFX BE)
Taking inflation into account, the 8800 Ultra wouldn't be far off the $1k number either.
Before people start saying I'm crazy, remember that GK104 is the replacement for the GTX460/560, and the chip will be smaller than GF104/114, most probably. 28 nm allows for nearly twice the transistors in the same space, and this GK104 is not even 2 times GF104, it has only 50% more ROP/TMU/memory bus. SPs is what takes less die area. Wild guesstimate without anything to support it, besides evolution/differences on Fermi based chips, 3.3 billion transistor, 320 mm^2.
Same with GK100, only 33% wider memory bus and ROPs. 64 SP per cluster versus 32 on GF100 == lots of savings. It will be smaller than GF100 for sure, much smaller probably. Guesstimate, 4.4 billion transistor, 420 mm^2.
Botom line, IMO, GK104 cards will be "cheap" to produce, as cheap as a GTX560 once there's enough supply. But looking at specs they do look like they might be able to compete with Tahiti based card(s), if even only with the HD7950, so at how much they decide to launch them... that's another story.
It will be the same old story anyhow, Amd brings out new gen, Nvidia waits to see how good they are, then they make Nvidia cards 10% faster and charge $100-$150 more.
1024 Cores will mean it will have to be the same clock rate as Tahiti to get the same TFlops
Putting down this:
1. If one has the higher clock rate get the one with the higher clock rate
2. If the clock rate is the same look at the memory bandwidth to make your decision instead
512bit GDDR5 vs 384bit GDDR5
will be a big thing for GK100
Just sad no one went XDR2 when that was made for GPUs in mind
Come on man, you can do better than to spout out AMD fanboyism. I know it, you know it, so why are you still doing it?