Do you think a single GTX 870 or 880 will be enough for UHD?

deathcall666

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Nov 23, 2012
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Id put it this way.
- maxwell is already out. The 28nm 750 and 750ti are maxwell tehnology. They have a huge performance/watt ratio considering previous generation.
- the 880 will be on 20nm from some confirmed leaks whoch means even better IPC and performance.
-880(ti) will most probably have a 400gb bandwidth and 150-200TDP. It will be faster than a 7990 which is a dual gpu.
-i believe they will handle todays games at 4k. However i believe they wont be doing the same with the games release at the same time as the card itself. One GPU for 4k seems rather distant ar least for next generation of GPU
All of what im saying has logic but , its just intution and without any benchmarks they mean close to 0
 

deathcall666

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Nov 23, 2012
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As ive mentioned they are only supositions made by logic. I just watch the numbers , extrapolate them and form a pattern of e
volution.
GPU. Bandwidth. Texel Rate TDP
Gtx480 176 GB/s. 42GB/s. 250w
Gtx580 192 GB/s. 49GB/s. 244w
Gtx680 192 GB/s. 128GB/s. 195w
Gtx780ti 336 GB/s. 210GB/s. 250w
As you can see from 680 to 780ti there is a 75% increase of bandwidth , a 64% increase in texel rate for just under 30% (28 exactly) power increase.
Now lets see the 650ti vs 750ti ( which is the maxwell 28nm).
GPU. Bandwidth. Texel Rate. TDP
Gtx650ti. 86GB/s. 59GB/s. 110w
Gtx750ti. 86GB/s. 40GB/s. 65w
As you can see from 650ti to 750ti there is no improvement in bandwith , a 33% decrease in texel rate but also at 45% less energy.
Now making a sumarize
The 780ti with maxwell tehnology would offer the same bandwidth performance at under 140w(137.5 actually) and just 140GB/s texel rate compared to the 210B/s that it actually has.
If the 880ti will have a 150/200w TDP then the the stats would be the following:
-bandwidth 336/488 GB/s
- texel rate 152/203 GB/s
Im not even taking into acount a 250w version whoch would go over 600GB/s bandwidth and over 250GB/s and also not counting the 20nm. The supositions were made on based on a 28nm Maxwell the 750ti however al leaks confirm the 20nm.
As i said these are just supositions based on rather utopic climate. There are a lot of factors that can influence the final numbers and unpredictable at this stage.
 

mapesdhs

Distinguished
What I find so annoying about all the card series revisions (500, 600, 700, etc.) is the staggering amount
of performance overlap between each generation. Thinking back some years from when I upgraded to a
GTX 460 from an 8800GT, the performance increase was very significant and the cost not that bad at all.
But now it seems like one has to wait a much longer time before an existing GPU investment is worth
replacing, partly because the pricing bands are so much higher than they used to be. It's why since my
460s I've just been going after used former-top-end cards instead, currently two 580 3GB SLI (faster
than a 780, but much cheaper, only cost me 270 UKP).

It would be nice if there's a single 800 series card that's at least 2X quicker than 580 SLI, but somehow
I doubt it, and even if there is, I bet it costs a fortune. Except for an HTPC I want to build (where a single
middling new Maxwell makes sense), I can see my next upgrade just being two 780Ti when they drop in
value to the same kind of level. I really hope NVIDIA offers a midrange Maxwell with decent RAM that isn't
too expensive, as two such cards would then be a good option for decent performance at 4K, much like
two 460s was pretty good and not too expensive for 1080p back in the day.

Ian.