Legit Processor Reviews

AMD A8-3850 2.9GHz Llano APU Review

Manufacturer: AMD
Product: AMD Llano A8-3850 APU
Date: Thu, Jun 30, 2011 - 12:00 AM
Written By: Nathan Kirsch -
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Power Consumption

CPU Power Consumption

Since power consumption is a big deal these days, we ran some simple power consumption tests on our test beds. The systems ran with identical power supplies, Solid-Sate Drives, Memory kits and motherboards from the same company. To measure idle usage, we ran the system at idle for one hour on the desktop with no screen saver and took the measurement. For load measurements, Prime95's in-place large FFT's were run on all cores to make sure each and every processor was at 100% load for maximum power consumption and heat. Curious about other test  scenarios, we decided to 3DMark Vantage the performance preset and took the maximum power consumption during the first GPU test. We also tested a video transcode using HandBrake 0.95 to see how the power draw on that was.

ASUS F1A75-M Pro System Power Consumption

Benchmark Results: The Intel Core i3-2105 Processor is a dual-core processor that has a maximum TDP of 65 Watts.  Much to our amazement our test system hit 66.8W on this processor during full load with Prime 95 64-bit and the platform idled at just 36.7 Watts. The AMD A8-3850 APU has a TDP of 100W, so we expect it to use more power. At an idle the AMD A8-3850 is amazingly power friendly and used just 36.2W! When running benchmarks like 3DMark Vantage or a torture test like Prime 95 64-bit we saw the power jump up to 135W and 157W, respectively. The AMD A8-3850 clearly uses more power at load than the Intel Core i3-2105, but as you saw in the benchmarks the AMD A8-3850 also had slightly better performance across the board.   

Next Page - AMD A8-3850 APU Overclocking


Review Index
Page 1 - AMD A-Series APU's For Desktop - Lynx
Page 2 - The Test System
Page 3 - CPU-Z, GPU-Z and Windows Index Score
Page 4 - SiSoftware Sandra 2011 SP3
Page 5 - x264 HD Encoding
Page 6 - CyberLink MediaEspresso 6.5
Page 7 - Handbrake
Page 8 - POV-Ray 3.7 RC3
Page 9 - Cinebench R11.5
Page 10 - Hyper Pi
Page 11 - PCMark 7
Page 12 - 3DMark Vantage
Page 13 - Resident Evil 5
Page 14 - H.A.W.X. 2 Benchmark
Page 15 - S.T.A.L.K.E.R.: Call of Pripyat
Page 16 - Power Consumption
Page 17 - AMD A8-3850 APU Overclocking
Page 18 - Final Thoughts and Conclusions