After posting exceptional idle system power numbers in a single-card configuration, it was surprising to find two Radeon HD 7970s using more power at idle than GeForce GTX 680s in SLI. Instead, a second Radeon HD 7970 adds about 20 W.
How about idle power use with multiple monitors attached?
|Idle Power Consumption|
|Display-Off Power Consumption|
|GeForce GTX 680 2 GB||150 W||113 W|
|Radeon HD 7970 3 GB||157 W||91 W|
ZeroCore works its magic once we put our screen to sleep, though, and the CrossFire configuration immediately sheds 20 W. Not equipped with this functionality, Nvidia’s GeForce GTX 680s only manage to drop 3 W.
Dual-card configurations necessitate beefier power supplies—no doubt about that. The Radeon HD 7970s end up higher on the line graph through a run of the 3DMark 11 demo. At least in the Deep Sea segment, two GeForce GTX 680s behave an awful lot like a single GeForce GTX 590.
- Multi-Card, Wide-Screen Gaming, And Your Feedback
- Testing With EVGA’s GeForce GTX 680 2 GB
- Test System And Benchmarks
- Benchmark Results: 3DMark 11
- Benchmark Results: Battlefield 3
- Benchmark Results: Crysis 2
- Benchmark Results: The Elder Scrolls V: Skyrim
- Benchmark Results: DiRT 3
- Benchmark Results: World Of Warcraft
- Benchmark Results: Metro 2033
- Benchmark Results: Overclocking
- Benchmark Results: Sandra 2012
- Benchmark Results: MediaEspresso And LuxMark 2.0
- Noise And Temperature
- Power Consumption
- On SLI, Competition, Overclocking, And Availability