I recently upgraded my family's PC and it is now running the following configuration:
AMD A10-5800k
Arctic Alpine 64 Plus cooler
Asus F2A85-M LE
2x4GB 1866 RAM (Patriot viper 3 black mamba)
Samsung 250GB HDD
Cooler Master Elite 33x case
Sharkoon SHA450-8P psu
The PSU is not 80+ certified and probably quite inefficient. The old system (Athlon64 X2 4400 EE, Radeon 1950) used 100W AC when idle and about 215W when using the OCCT PSU test. (All power measurements were done using a ProfiTec KD302 and I rounded the values to the closest multiple of 5 when the values where changing a lot.)
The new configuration uses about 43W idle. Since I can only change the VCore for full load this is the same value for all configurations.
I wanted to see if by underclocking and -volting the power consumption of the A10-5800K can be easily brought down to the level of the 65W A10-5700. To simulate an A10-5700, I downclocked the processor to 3.4GHz which also disabled Turbo Core and reduced the voltage.
There were short power usage spikes when starting some tests, I've included these values in parenthesis. All power usage values are AC as shown by the power meter. Stock VCore is 1.325V.
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Stock [email protected] [email protected]
Bios 115W 100W 90W
OCCT CPU 145W(160W) 130W 115W(120W)
OCCT 3D 130W 125W 120W
OCCT PSU 180w(197W) 170W(185W) 155W(162W)
I hope these numbers help someone in a situation similar to mine.
- Johannes