Of course HD4890 was just a bump in clocks, but you surely don't believe HD6900 is a "new generation" for just a 15% performance increase? I suppose it depends how you define a new generation. Tweaking VLIW-5 into VLIW-4 is just a minor adjustment imho. To me, it's about performance, not about architecture. For example, when NV increased the specs on G80 architecture from 8800GTX to GTX280, that's still pretty much the same architecture with minor tweaks, but constitutes a new generation. Under similar terms, AMD's architecture was larged unchanged from 9700Pro --> X1950XTX, and similarly from 2900XT --> HD6970 (for the most part). In each of those periods, the performance increase was dramatic and yet the architecture was much unchanged. So I tend to view "real" generations based on relative performance, not their underlying architecture to be honest.
Based on performance, I don't agree that GTX580 and HD6970 warranted a change in the first number, which normally indicates a generational leap. I don't consider a 15% performance increase a "generational leap".
Let's hope HD7970 comes in closer to 40-50% faster than GTX580, rather than the 25-30% rumor.
I find NO fault with your logical reasoning. It should be possible to use existing scores for the other listed tests to see how much advantage Nvidia has at present over AMD. If these correspond, then VERY WELL DONE.This slide is extremely telling. VLIW4/5 typically get full utilization for bitcoin mining already (SHA). 7970 beats it by 50% (35% more SP, faster clock speed = ~50%). This confirms 1D shader is flexible and powerful and their new architecture is fully efficient in terms of utilization similar to NV.
In everything else where VLIW was at typically 70% efficiency (including games), GCN 1D shaders gives it a spanking.
If this slide is legit, i'm confident we can see >50% Cayman perf.
I hope we don't have another 2900xt on the way.
You will on Thursday. i hear that tech reviewers in Europe are P'O'd at AMD for launching during what is traditionally their vacation.Honestly, for the love of humanity I hope to hell we don't see reviews anywhere that close to Christmas or any other major holiday.
Reviewers are people too, they have family and friends that they need to have the time to be enjoying this close to Christmas.
Would be a depressing thing to do to a reviewer to put them on a review timeline that hogs up all their family time while they try and crunch out a review right before xmas
That is not a slide. It's a beefed version of http://img1.imagehousing.com/25/9bccf6e31bc3f7ddaf4658263e4f81bd.jpg that I made (in Excel) as that image just looked that ugly. It's NOT from AMD (see also this one). On the other hand, the last 7 slides that have been linked were mine too... The numbers are (or should be) quite correct. The numbers are not coming from AMD though.If your observation is corrent, then this slide showing HD7970 to be 40-60% faster than GTX580 would be more accurate if 2048 1D ~ 2560 VLIW. This is in contrast to the 20-30% rumors we've been hearing. Obviously, again provided by AMD...so take it with a grain of salt.
Source
http://www.chiphell.com/thread-329802-1-1.html
More or less translation: "Beats GTX580 by 20% on average, not 3DMark. Beats GTX580 by around 30% in Crysis. Expected goal has been reached. There has been no goal of doubling the performance of previous generation cards as speculated."
chiphell?
the guys that said of xdr2, the tahiti of 600mm², the 7950 losing to gtx580
sorry, i don't buy anything from that forum
"Waiting for Kepler" seems to be the new mantra for some here but what if its a dud?
AMD showed NVDA the way with the HD4000,HD5000 series cards while HD6990 still holds the open class crown.
NVDA almost screwed the pooch with Fermi 480.....perhaps we will see another big,hot chip.
They pulled a fast one. On us... 90% of those benches are at extreme resolution, 7970 3GB vs. 1.5GB 580. Tell me.
Anybody going blindly from a GTX 580 to a 7970 upon launch ?
They pulled a fast one. On us... 90% of those benches are at extreme resolution, 7970 3GB vs. 1.5GB 580. Tell me.
Anybody going blindly from a GTX 580 to a 7970 upon launch ?
Drinking the hater-ade much? These numbers are downright impressive.
Drinking the hater-ade much? These numbers are downright impressive.
Might want to hang onto that 580 til you can actually buy a 7970. They are going to sell like crack. I imagine you'll have to camp out online and also get a little lucky to snag one.
What is the issue? If 7970 has 3 GB and 580 GTX has 1.5 GB as their normal values. why not test them as is?They pulled a fast one. On us... 90% of those benches are at extreme resolution, 7970 3GB vs. 1.5GB 580. Tell me.
I already sold my gtx 580 in anticipaton, but if 7xxx doesn't perform I will have to pick up a midrange card to last me until gtx 680.
They pulled a fast one. On us... 90% of those benches are at extreme resolution, 7970 3GB vs. 1.5GB 580. Tell me.
What is the issue? If 7970 has 3 GB and 580 GTX has 1.5 GB as their normal values. why not test them as is?
If this is true, AMD is going to be in serious trouble once a full-fledged GTX680 launches. The chance of GTX680 only 30% faster than a GTX580 is 0.