Power usage, temperatures and noise
|Idle||Under Load (Unigine Valley)|
|Zotac GTX 980 AMP! Omega||125W||342W|
|eVGA GTX 980 Ti Superclocked||118W||385W|
|Zotac GTX 980 Ti AMP! Extreme||126W||454W|
Power draw from the wall for the complete system except monitor. Load is when running Unigine Valley at 2560×1440.
The higher clocked GPU and memory plus the triple fan-cooling all work together to increase the power draw quite a lot compared to the eVGA GTX 980 Ti SC. We still end up under 500W meaning a 600-750W PSU should be enough. Considering the performance this card provides us it’s impressive.
The max temperature was measured while running Unigine Heaven test but was similar when using other benchmarks that put full load on the GPU. The room where this was done had a temperature around 25C which is higher than usual due to warm summer weather.
This card does not run the fans while in idle or low and won’t spin them up until the load is around 40%.
|Zotac GTX 980 Ti AMP! Extreme||eVGA GTX 980 Ti Superclocked|
|Idle Temperature||34 C||33C – 38C *|
|Temperature under load||63 C||67C – 81C *|
* eVGA offers several fan profiles. The default profile and the quite profile yields the high temperatures while the aggressive profile yields the low temperatures, however with a loud fan noise.
Even though the fans are not spinning at all at idle we still hit 34C on the GPU, same as the eVGA with the noisy aggresive fan profile. We never really see any higher temperatures than around 63C on the Zotac GTX 980 Ti AMP Extreme.
Noise was measured at 1 meter behind the case while at the windows desktop (idle) and full load while running Unigine Heaven.
|Jet takeoff (200 feet)||120 dBA|
|Construction Site||110 dBA|
|Shout (5 feet)||100 dBA|
|Heavy truck (50 feet)||90 dBA|
|Urban street||80 dBA|
|Automobile interior||70 dBA|
|Normal conversation (3 feet)||60 dBA|
|Office, classroom||50 dBA|
|Living room||40 dBA|
|Bedroom at night||30 dBA|
|Broadcast studio||20 dBA|
|Rustling leaves||10 dBA|
|Zotac GTX 980 Ti AMP! Extreme||37.9 Ba||39.7 dBa|
|eVGA GTX 980 Ti Superclocked||38.4 dBa||44 dBa|
Out own test-rig with the Thermaltake Level 10 case is itself quite noisy with large fans. This means that the noise level at idle basically is an indication how noisy the case and the rest of the environment is. The difference between the eVGA and the Zotac card is minor and can be attributed to fluctuations between the two measurement times.
As we put a load on the cards things change though. The eVGA-card is using the default fan profile meaning that the temperatures are hitting around 81C. In contrast the Zotac-card is coasting at around 62-63C and still is a lot less noisy.
We did encounter a weird issue though. We did some Witcher 3 tests (~ 40 fps at 4K with everything set to max is not bad, is it?) and for some reason suddenly whenever we started the game, even at the menu screen and even though the temperatures on the GPU was below 50C the fans spun up to 70% which was very noisy. This was the only game it happened in of all we tested so we do not know what the issue is. We’ve also seen some reports of fans spinning, then stop spinning and quickly spin up again which result in an annoying sound but we did not encounter that at all. In fact we have seen this reported for other GTX 980 Ti-cards also so it might be a bios issue that can affect cards from more than one vendor. We have also seen reports of coil whine from the fans but again this is not something we encountered at all. Make sure you buy it from a good vendor though in case your card has the problem so you can exchange it.