The NVIDIA GeForce GTX 970 Review: Featuring EVGA
by Ryan Smith on September 26, 2014 10:00 AM ESTSynthetics
As always we’ll also take a quick look at synthetic performance. These tests mainly serve as a canary for finding important architectural and configuration changes.
Tessellation performance has scaled very closely with the change in SMMs and clock speeds, just as we would expect here.
Texel throughput has also taken a hit in accordance with the loss of SMMs and clock speed. Based on gaming performance the GTX 970 doesn’t appear to be too badly handicapped here, but it definitely doesn’t have much in the way of texel throughput to spare.
Pixel throughput on the other hand ends up being extremely odd and not at all what we were expecting. The GTX 970 takes an incredible dive here, with its pixel fillrate dropping by 26%. At a high level this test is bounded by memory bandwidth and ROP throughput, and both of these factors should be identical between GTX 980 and GTX 970. Instead we see GTX 970 lose more performance than should theoretically be possible, as the 26% drop is more than the accumulated difference between the clock speed and SMM differences.
At this point we’re still trying to figure out exactly what’s going on. We have no other evidence that there’s a difference in ROP throughput or memory bandwidth between the GTX 980 and GTX 970 so it is not clear to us where the difference lies. One possibility is that this is somehow bottlenecked at the Raster Engine level – where each of the four engines accounts for 25% of the work – but the pigeonhole principle means that NVIDIA can’t disable a GPC since at least 1 SMM must be active in each GPC partition. This matter will require further research.
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dibbademevos - Tuesday, September 30, 2014 - link
hidibbademevos - Tuesday, September 30, 2014 - link
hi
SkyBill40 - Wednesday, October 1, 2014 - link
Having always been an MSI guy, I've not really considered going with another vendor... until now. This looks like a nice card which also happens to conveniently match my color scheme whereas the red coloring of the MSI Gaming line sadly does not. Still, the overclocks are pretty much a wash and the only real differences seem to be in the cooling solution. The ACX 2.0 seems to be on par with the MSI, so I suppose I could go either way.Oxford Guy - Saturday, October 4, 2014 - link
Is it the case that the ACX card uses only 4 power phases which is why overclocking it beyond the factory setting isn't going to work very well? There is no mention of power phases in your article.Kanuj5678 - Sunday, October 5, 2014 - link
GTX 970 beats the shit out of everything and that too in style with lowest TDPCheers
Kanuj
ambientblue - Wednesday, April 29, 2015 - link
Enthusiasts dont care about TDP that much. The 290x is held back by HSF cooling (Uber mode is actually stock advertised speeds) while the GTX 970 is not. Water-cool the 290x and OC it to 1200mhz and it will match a 980, surpassing it at 4K resolution easily.igyb - Tuesday, October 7, 2014 - link
Is the gtx 970 just an underclocked 980? i might just get that because i cant really afford a 980.Kimtastic - Tuesday, October 21, 2014 - link
Dear Ryan,I had a MSI GTX 970 and found that under heavy load the core clock was fluctuating and causing FPS drops. After having read this article, I now understand that its due to the TDP limit. Is this something that will/can be fixed or something permanent?
I would be grateful for your advice. Many thanks.
hoohoo - Thursday, October 23, 2014 - link
Thank you for including an HD7970 in the test!Shoiti2 - Monday, November 3, 2014 - link
Those price are damn cheap. I would say, buying a gtx980 in the U.S wouldnt even buy a gtx 970 in Brazil. I'm living in Brazil right now and ordered an evga gtx 970 sc. Ok, how much did i pay for the gtx 970!! Nothing less than $750USD.the Gtx 970 at $750USD still very cheap for us Brazilian, the world's most expensive country.
The evga gtx 980 is costing around $1100USD, not kidding, check for yourself.