The NVIDIA GeForce GTX 970 Review: Featuring EVGA
by Ryan Smith on September 26, 2014 10:00 AM ESTThe Test
Quickly touching on the subject of compatibility, as readers of last week’s GTX 980 review may recall, we had initial compatibility issues with our GTX 970 FTW that prevented us from including it in our review. Since then NVIDIA has been able to isolate the issue and has put together the 334.16 drivers, which include a fix for the problem we were seeing. So we are now up and running. NVIDIA tells us that the issue only impacted certain motherboards (such as our ASRock Fatal1ty X79 Professional), and as far as we can tell that appears to be correct, as we have not seen any other reports of compatibility issues.
Moving on, for the purposes of our testing we will be looking at both the GTX 970 FTW in its shipping configuration and in a reference clocked configuration. EVGA has given us the reference GTX 970 vBIOS to flash to this card (taking advantage of the triple BIOS feature), allowing us to turn it into a standard GTX 970 for that part of our testing.
| CPU: | Intel Core i7-4960X @ 4.2GHz |
| Motherboard: | ASRock Fatal1ty X79 Professional |
| Power Supply: | Corsair AX1200i |
| Hard Disk: | Samsung SSD 840 EVO (750GB) |
| Memory: | G.Skill RipjawZ DDR3-1866 4 x 8GB (9-10-9-26) |
| Case: | NZXT Phantom 630 Windowed Edition |
| Monitor: | Asus PQ321 |
| Video Cards: |
AMD Radeon R9 290X AMD Radeon R9 290 AMD Radeon R9 280X AMD Radeon HD 7970 AMD Radeon HD 6970 EVGA GeForce GTX 970 FTW ACX 2.0 NVIDIA GeForce GTX 980 NVIDIA GeForce GTX 780 Ti NVIDIA GeForce GTX 780 NVIDIA GeForce GTX 770 NVIDIA GeForce GTX 680 NVIDIA GeForce GTX 670 NVIDIA GeForce GTX 580 |
| Video Drivers: |
NVIDIA Release 344.07 Beta NVIDIA Release 344.16 Beta AMD Catalyst 14.300.1005 Beta |
| OS: | Windows 8.1U1 Pro |
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AkibWasi - Saturday, September 27, 2014 - link
ain't those 896(64 per SMM) yellow colored boxes in Titan's diagram indicate FP64 cores ???Ryan Smith - Saturday, September 27, 2014 - link
Correct. NVIDIA only includes those cores on diagrams for their compute/pro GPUs.dexgen - Friday, September 26, 2014 - link
I think it would be a great idea to comment on and analyze the effects of overclocking (extra OC through AB or PX) when even the non overclocked settings end up getting throttled.For me, the most important thing about overclocking when the card is factory overclocked already is how much the throttling changes when the power target is increased. Any comments, Mr. Smith?
Ryan Smith - Friday, September 26, 2014 - link
Increasing the power target helps, but it does not fully alleviate the issue. A 10% increase just isn't enough to eliminate all TDP throttling, thanks in big part to the fact that power consumption grows with the square of the voltage. GM204 would ideally like quite a bit of power to sustain a heavy workload at 1.243v. Which is why that's officially in boost territory, as NVIDIA only intends that voltage/bin to be sustained in light workloads.Alexvrb - Saturday, September 27, 2014 - link
Wow I figured that the 970 would run into far less issues sustaining max boost than the 980. But I guess it is drawing nearly as much power. I don't want to see anyone complaining about AMD cards and boost anymore, heh.Anyway, the 970 still provides the absolute best bang for the buck and I'm stunned they didn't price it at $400. It's fast, reasonably priced, runs cool and quiet. It also is easy on power requirements, though I always overbuy on PSU anyway for headroom. Easy recommendation for anyone buying in the this price range!
AnnonymousCoward - Saturday, September 27, 2014 - link
Square of voltage, what are you smoking? P = IV = I^2 R = V^2 /R. The IC isn't a resistor. Typically current stays close to the same as you increase supply voltage.Ryan Smith - Saturday, September 27, 2014 - link
The formula for dynamic power consumption:P = C * V^2 * f
Where C is capacitance, f is frequency, and V is voltage. Those high boost bins are very expensive from a power standpoint.
AnnonymousCoward - Sunday, September 28, 2014 - link
You're right, thanks! Thinking about it, dynamic power increases by the square, and static is by a direct proportion, so total should be between the two. Dynamic probably dominates so it's probably much closer to the square.Footman36 - Friday, September 26, 2014 - link
What really bothers me is that EVGA is getting lazy, reusing older pcb's. This one looks like a 760... The VRM and phases look very primitive next to a card like the Asus Strix GTX 970. There was a time when EVGA used to wow me with custom designs, the last few years not so much as they invariably use reference boards. the issue I have with most of the reference boards is that coil buzz is noticeable. The Asus and MSI boards are using custom digital VRM's and super alloy caps....Anyhow, nice review.
Iketh - Monday, September 29, 2014 - link
i'm sure it has to do with their big heat sink design + bracing so the card doesn't flex