[Tested and Burned] EVGA GeForce GTX 580 SC Review



EVGA GeForce GTX 580 SC Review Index


7 – EVGA GeForce GTX 580 SC Power consumption and Overclocking

EVGA GeForce GTX 580 SC, FurMark 1.9.0 Burn-in mode


UPDATE: final stable overclocking values: GPU: 870MHz, VDDC: 1.125V
More details in this article: EVGA GeForce GTX 580 Superclocked GPU Overclocking Session

EVGA GeForce GTX 580 SC, FurMark APPROVED




For the power consumption and maximum stress test, I used the upcoming FurMark 1.9.0. The graphics workload in the new FurMark 1.9.0 has been slightly increased,
leading to more power consumption (few watts in more). But this extra graphics workload can make the difference with high overclocking settings.
It was the second real test of FurMark 1.9.0 (first test has been done with SAPPHIRE HD 6870).

And to find the max stable GPU core clock, I used the version 1.5.0 of EVGA OC Scanner (version 1.5.0 will be released shortly on EVGA website). This tool is really nice because it allows to detect artifacts that are difficult to see (with a size of one or few pixels).

EVGA OC Scanner



As you may know dear readers, NVIDIA has added a power draw limiter (or over current protection, OCP) on its GTX 580. The power draw limiter includes a hardware monitoring chip and the graphics drivers. One of the functions of the driver is to detect GPU stress test applications like FurMark (FurMark 1.8.2 is blacklist in NVIDIA drivers) in order to limit the power draw. See here for more details: GeForce GTX 580 Power Monitoring Details.

How to bypass the OCP? Two solutions:

So for my burn-in tests, I disabled the OCP with GPU-Z and used FurMark 1.9.0…



The total power consumption of my testbed in idle is 120W (EVGA GTX 580 SC with default clocks).

With default settings (GPU core: 797MHz, Vcore or VDDC: 1.082V, memory: 1012MHz), the total power consumption of the system is 480W for a max GPU temperature of 90°C (FurMark 1.9.0 settings: 1920×1080, fullscreen, Burn-in mode, no AA, no postfx).

We can the calculate the power consumption of EVGA’s GTX 580 SC with stock clocks. The Corsair AX1200 PSU has an efficiency factor of around 0.9 (see this article, there is a graph of the AX1200 efficiency).
P = (480-120) * 0.9
P = 324 watts

In this overclocking test, I only concentrated on the GPU overclocking. I used EVGA Precision to increase the GPU clock and after each new setting, I used a session of OC Scanner (in 1920×1080 fullscreen) to find artifacts and a session of FurMark 1.9.0 to push the GPU beyond the max ;)

  • core: 797MHz, mem: 1012MHz. Total power consumption: 480W, GPU temp: 90°C, GPU current: 107.5A and GPU power draw: 110W, FurMark 1.9.0 score: 2433 points (40FPS)
  • core: 831MHz, mem: 1012MHz. Total power consumption: 496W, GPU temp: 91°C, GPU current: 112.0A and GPU power draw: 114W
  • core: 846MHz, mem: 1012MHz. Total power consumption: 498W, GPU temp: 91°C, GPU current: 114.0A and GPU power draw: 115W
  • core: 861MHz, mem: 1012MHz. Total power consumption: 505W, GPU temp: 91°C, GPU current: 115.0A and GPU power draw: 117W, FurMark 1.9.0 score: 2614 points (43FPS)
  • core: 880MHz, mem: 1012MHz. Total power consumption: 512W, GPU temp: 92°C, GPU current: 117.0A and GPU power draw: 119W, FurMark 1.9.0 score: 2677 points (44FPS)
  • core: 897MHz: artifacts found by OC Scanner

EVGA GeForce GTX 580 SC, OC Scanner

EVGA GeForce GTX 580 SC, artifacts detection with OC Scanner



Result: I managed to get a stable value under FurMark 1.9.0 for a GPU clock of 880MHz and the default GPU voltage.

FurMark Approved

EVGA GeForce GTX 580 SC, FurMark 1.9.0 Burn-in mode



To reproduce such overclocking test, I recommend you to have some quality hardware, because we exceed the electric specifications of the system. My testbed includes a GIGABYTE A-UD5 motherboard and a high-end PSU: Corsair’s AX1200!

The maximun power cosumption of the card is:
P = (512-120) * 0.9
P = 352 watts

Here is a comparative table of the power consumption of the card ALONE (not the total power consumption of the system):

Power: 352W – EVGA GTX 580 SC (core: 880MHz, Vcore:1.082V)
Power: 330W – ASUS ENGTX580> (core: 871MHz, Vcore:1.088V)
Power: 324W – EVGA GTX 580 SC (core: 797MHz, Vcore:1.082V – default settings)
Power: 290W – ASUS ENGTX580 (default settings)
Power: 272W – EVGA GTX 480
Power: 220W – SAPPHIRE Radeon HD 6870 (core: 1000MHz, Vcore: 1.300V)
Power: 185W – ATI Radeon HD 5870
Power: 155W – SAPPHIRE Radeon HD 6870 (core: 900MHz, Vcore: 1.175V)
Power: 147W – ASUS EAH6870
Power: 135W – MSI N460GTX Cyclone 768D5 OC



The max total power consumption of the EVGA GTX 580 SC is 352W while the GPU one is 119W (according to GPU-Z). The difference, 352-119 = 233W, is the power consumption of the rest of the board (especially the VRM).

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