The NVIDIA GeForce GTX 980 Review: Maxwell Mark 2
by Ryan Smith on September 18, 2014 10:30 PM ESTThief
Our latest addition to our benchmark suite is Eidos Monreal’s stealth action game, Thief. Set amidst a Victorian-era fantasy environment, Thief is an Unreal Engine 3 based title which makes use of a number of supplementary Direct3D 11 effects, including tessellation and advanced lighting. Adding further quality to the game on its highest settings is support for SSAA, which can eliminate most forms of aliasing while bringing even the most powerful video cards to their knees.
Thief is another solid win for the GTX 980. The closest anyone gets to it is within 10%, and the lead only widens from there. Against the GTX 780 Ti, this is a lead of anywhere between 10% and 16%, and against the R9 290 XU it’s 15-22%; Mantle doing the card no favors for average framerates above 1080p.
The performance advantage over the GTX 780 and GTX 680 is also above average. GTX 980 can outrun the previous x80 card by 33% or more, and the GTX 680 by at least 80%.
On an absolute basis the GTX 980 won’t quite crack 60fps at 1440p, but it does come very close at 56fps. And since thief is running an internal form of SSAA, turning up the resolution to 4K and dropping the SSAA still yields playable framerates, though at 48fps it’s closer to 45 than 60. 60fps is going to require a bit more horsepower than what a single GTX 980 can deliver today.
The GTX 980’s performance advantage generally holds up when it comes to minimum framerates as well. Though it is interesting to note that until we get to 4K, the GTX 980 holds a larger minimum framerate advantage over the GTX 780 Ti than it does an average framerate advantage – 20% verus about 10%. On the other hand the use of Mantle begins to close the gap for the R9 290XU a bit, but it’s still not enough to make up for the GTX 980’s strong overall performance advantage, especially at 1080p.
Our delta percentages are once more unremarkable. All cards are consistently below 3% here.
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Viewgamer - Friday, September 19, 2014 - link
To Ryan Smith. How can the GTX 980 possibly have a 165W TDP when it actually consumes 8 watts more than the 195W TDP GTX 680 !? please explain ? did Nvidia just play games with the figures to make them look more impressive ?ArmedandDangerous - Friday, September 19, 2014 - link
TDP =/= Power consumption although they are related. TDP is the amount of heat it will output.Carrier - Friday, September 19, 2014 - link
You're right, power consumption and heat output are related. That's because they're one and the same! What else could that electricity be converted to? Light? A massive magnetic field? Mechanical energy? (The fan, slightly, but the transistors aren't going anywhere.)Laststop311 - Friday, September 19, 2014 - link
no they aren't the same. Not all the electricity used is converted to heat. This is where the word EFFICIENCY comes into play. Yes it is related in a way but maxwell is more efficient with the electricity it draws using more of it and losing less of it to converted heat output. It's all in it's design.bernstein - Friday, September 19, 2014 - link
bullshit. since a gpu doesn't do chemical nor mechanical transformations all the energy used is converted to heat (by way of moving electrons around). efficiency in a gpu means how much energy is used for a fixed set of calculations (for example: flops)Senpuu - Friday, September 19, 2014 - link
It's okay to be ignorant, but not ignorant and belligerent.bebimbap - Friday, September 19, 2014 - link
there is "work" being done, as transistors have to "flip" by use of electrons. Even if you don't believe that "input energy =\= output heat" think of it this way100w incandescent bulb produces X amount of useful light
18w florescent bulb also produces X amount of useful light
in this sense the florescent bulb is much more efficient as it uses only 18w to produce the same light as the 100w incandescent. so if we say they produce the same amount of heat, then
100w florescent would produce ~5x the light of a 100w incandescent.
Laststop311 - Saturday, September 20, 2014 - link
ur so smart broGuspaz - Friday, September 19, 2014 - link
The power draw figures in this article are overall system power draw, not GPU power draw. Since the 980 offers significantly more performance than the 680, it's cranking out more frames, which causes the CPU to work harder to keep up. As as result, the CPU power draw increases, counteracting the benefits of lower GPU power draw.Carrier - Friday, September 19, 2014 - link
I don't think that can explain the whole difference. It performs similarly to a 780 Ti in Crysis 3, so the difference in power consumption can only come from the card. The 980 is rated 85W less in TDP but consumes only 68W less at the wall. The discrepancy gets worse when you add losses in the power supply.My guess is the TDP is rated at nominal clock rate, which is cheating a little because the card consistently runs much higher than nominal because of the boost.