mksu
New Member
- Joined
- Mar 24, 2010
- Messages
- 2 (0.00/day)
| Processor | Intel C2D E8200 @ 3,4 GHz |
|---|---|
| Motherboard | Gigabyte EP35-DS3 @ 425 MHz FSB |
| Cooling | Sharkoon Silent Eagle |
| Memory | 8 GB OCZ DDR2 Platinum @ 1020 MHz |
| Video Card(s) | Ati Radeon HD 3870 |
| Storage | Samsung HD502IJ |
| Display(s) | FujitsuSiemens ScaleoView 19'' |
| Case | Sharkoon Rebel9 Value |
| Audio Device(s) | Creative SB Audigy |
| Power Supply | Superflower P12P 400W |
| Software | Windows 7 64 Bit Professional |
Hello to everyone I'm new to this forum!
I found here this great RBE tutorial which was very helpful to me. Just the Powerplay settings with their linked ten clock infos remained unclear to me. It was not really obvious under which conditions which powerplay state is applied in connection with low, medium and high mode. So I flashed a Bios on my HD 3870 with "color marked" clocks, which means that i use ten different clock settings with wide spreads between them. Afterwards I ran Windows with several applications and monitored the GPU clock with the Rivatuner in order to determine the applicated power states and the related modes.
My HD 3870 is equipped with the following states:
State 0 - Boot
State 1 - Power savings for notebooks, high performance, optimal performance, overdrive template
State 2 - Power savings for notebooks, high performance, optimal performance
State 3 - UVD
Now to the results:
I found here this great RBE tutorial which was very helpful to me. Just the Powerplay settings with their linked ten clock infos remained unclear to me. It was not really obvious under which conditions which powerplay state is applied in connection with low, medium and high mode. So I flashed a Bios on my HD 3870 with "color marked" clocks, which means that i use ten different clock settings with wide spreads between them. Afterwards I ran Windows with several applications and monitored the GPU clock with the Rivatuner in order to determine the applicated power states and the related modes.
My HD 3870 is equipped with the following states:
State 0 - Boot
State 1 - Power savings for notebooks, high performance, optimal performance, overdrive template
State 2 - Power savings for notebooks, high performance, optimal performance
State 3 - UVD
Now to the results:
- In idle mode (desktop, office, firefox) the card is running in State 2 in low mode. It does not make any difference if Aero is activated or not (I use Win 7 64 bit as OS).
- Sometimes there are short leaps in idle to medium mode, but they last only for one two seconds, are not reproduceable and do not depend on GPU load.
- In 3D applications like games (Bad Company 2, TW 08) or Furmark the card remains in State 2, switching to high mode.
- State 3 is activated when replaying HD videos, immediately applying high mode, just switching temporarily into low mode when winding back or forward.
- When replaying Youtube videos or other non HD video sources (especially TV series episodes sized appr. 370 MB), the card remains in State 2 low mode.
- Whether the checkbox "enable Ati Overdrive" in the CCC is activated or not, the card remains in State 2. If the card is being overclocked by CCC, the clock set in CCC is applied instead of high mode in State 2.
- I was not able to shift the card onto State 1. The only evidence of State 1 is that its medium mode is the new lower bound of GPU clock in the CCC Overdrive tool.
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