The NVIDIA GeForce GTX 970 Review: Featuring EVGA
by Ryan Smith on September 26, 2014 10:00 AM ESTOverclocking
With GTX 980 we saw first-hand how GM204 had very significant overclocking headroom. Even without the ability to meaningful overvolt on NVIDIA cards, we were able to push our base GPU clock speed up from 1126MHz to 1377MHz, or in terms of the maximum boost bin, from 1265MHz to 1515MHz. Consequently with GTX 970 shipping at lower clock speeds, we have very lofty expectations here.
But running counter to that will be TDP. As we have already seen, GTX 970 is TDP limited right out of the gate, so even if our card has more clock speed headroom, its 110% TDP limit doesn’t leave much more in the way of power headroom. Furthermore as this is already a factory overclocked card, there’s no guarantee that EVGA has left us much overclocking headroom to play with in the first place.
| EVGA GeForce GTX 970 FTW Overclocking | ||||
| FTW | Overclocked | |||
| Core Clock | 1216MHz | 1241MHz | ||
| Boost Clock | 1367MHz | 1392MHz | ||
| Max Boost Clock | 1418MHz | 1455MHz | ||
| Memory Clock | 7GHz | 7.8GHz | ||
| Max Voltage | 1.218v | 1.243v | ||
And in fact our results show they haven’t. We aren’t able to get even another 50MHz out of our GPU before errors start setting in; 25MHz is all we will get, which pushes our base GPU clock speed from 1216MHz to 1241MHz, and our maximum boost clock from 1418MHz to 1455MHz. Overall this is a weaker overclock than GTX 980, though not immensely so.
Meanwhile memory overclocking was just as fruitful as it was on GTX 980, with our card being able to handle up to 7.8GHz on its GDDR5 memory. As we saw with GTX 980 we’re nearly as memory bandwidth bottlenecked as we are GPU bottlenecked, but we will take what performance we can get.
As you’d expect from such a mild overclock, the performance increase is very limited. Our overclocked GTX 970 FTW does close on GTX 980 even more, but even with this full overclock it won’t overcome the 3 SMM deficit.
Overall in all likelihood the GTX 970 FTW benefits more from the 10% increase in TDP than it does the clock speed increase. GTX 970 – and GM204 in general – clearly desires to be fed with more voltage and more power overall than what any NVIDIA approved card is going to see.
Power consumption and noise tick up, but only slightly. The limited 10% TDP increase means that the amount of power the card can draw and dissipate as heat only increases slightly. You aren’t getting much more performance, but you also aren’t getting much more noise.
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dj christian - Friday, September 26, 2014 - link
What type of fans does it use? Ball bearing or sleeve bearing?bardolious - Friday, September 26, 2014 - link
EVGA uses double ball bearing fans. That's where the extra noise comes from. Much noisier at idle but far more durable. I've really been pleased with the ACX cooler on my 770.Chloiber - Sunday, September 28, 2014 - link
Actually, the noisy ACX on my 770 is the reason I won't be buying another EVGA anytime soon. They have given me a silent BIOS, which is great, but the ACX is still by far the loudest noise maker in my PC. It has also been proven by countless reviews: the idle and even load noise levels were higher than those of the stock GTX 770. And they are making the same mistake AGAIN - I really can't believe it.Well, they seem to come around after seeing all the competitors which seem to understand what it means to deliver silent cards.
The ACX cooler isn't bad, it's actually rather good - the only problem is that they never understood what a "silent" card means. They were always going for lower temperature over lower noise levels - even in idle, which made absolutely no sense.
Iketh - Monday, September 29, 2014 - link
enjoy the other brands' fans going out in 1-2 yearsalso if you read the article (updated 9/26, two days before your post), evga is releasing a passive idle bios which makes your whole post pointless
creed3020 - Friday, September 26, 2014 - link
In all honesty I cannot see how comparing a _reference_ R9 290X on Uber to this particular 970 is valid.We really need a similar open air cooled R9 290X to really see how power, temps, and noise compare....Everyone knows that AMD's reference blower for the 290X just isn't up to the task of cooling that beast.
haukionkannel - Friday, September 26, 2014 - link
True. The R9 290 reference cooler is one of the worst options to chose and non reference has been much better! But still 970 is hard nail in 290X skin!Lithium - Friday, September 26, 2014 - link
YepBut reference 290X still selling and used to make price as low as 449$.
So its valid
creed3020 - Monday, September 29, 2014 - link
Good point. I guess some manufacturers just want that entry product in their stack of offerings and go with the reference design.Thanks Ryan for the hard work on the nVidia 980/970 release, these articles were excellent. In the future perhaps consider a followup test comparing a bunch of cards to more so evaluate their coolers and OC potential. That could be very interesting taking some of the top and mid cards from each manufacturer and doing a quantitative analysis across the board.
AkibWasi - Friday, September 26, 2014 - link
970 has 52 FP64 cuda cores right ? why block diagram doesn't show those ?Ryan Smith - Friday, September 26, 2014 - link
NVIDIA does not include the FP64 CUDA cores in their diagrams for consumer chips. This has been the case as far back as GK104.