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INTEGRATED GRAPHICS TESTING
Our first set of tests focuses on the integrated graphics. Each CPU/APU and motherboard combination was equipped with 4GB of RAM, a 500GB notebook hard drive and a Blu-ray drive.
IGP Energy Efficiency
On lighter loads, the A10-6800K and A10-6700 are slightly more efficient than their Trinity analogs, the A10-5800K and A10-5700. When playing video, Haswell was still king by a healthy margin.
On heavier loads, the A10-6800K used about the same amount of power as the
A10-5800K, so even a small performance boost would make it a more efficient
chip overall. On full synthetic CPU load, the 6800K used only 5W more than the
i7-4770K Haswell chip, but when it came to actual work in the form of video
encoding with TMPGEnc, both the Haswell and Ivy Bridge processors pulled way
The A10-6700 exhibited much lower power consumption than its big brother, and in fact, the total draw actually decreased when we ran FurMark on top of Prime95 to stress the GPU and CPU simultaneously. We also observed that the power draw gradually fell off from when we started each test to when it ended by as much as 20W. This was caused by the CPU cores downclocking even though temperature was fine (15°C less than the 6800K). During the Prime95 + FurMark test, the CPU clock speed dipped to just 2.3 GHz. It seems that either the APU or motherboard throttled the clock speeds to artificially keep it within its 65W TDP specification.
There are no motherboard settings pertaining to thermal/power limits as there are on most Intel motherboards but we will test the 6700 on a different board in the near future to see if we can shed some light as to what exactly is responsible. We should also note that despite this issue all the performance numbers we generated was on par with our expectations.
Note: Discrete GPUs were tested on our GPU testing platform which uses a
Core i3-2100, though CPU scaling shouldn't be an issue given the relatively low level of GPU performance of the chips compared.
The new Radeon HD 8670D graphics controller is a minor upgrade over Trinity's HD 7660D, but it's enough to make it the fastest integrated chip we've tested. In our benchmarks, the A10-6800K and A10-6700 caught up to the GeForce GT 640 and Radeon HD 6570 in a couple of instances but generally both discrete cards were superior performers by a comfortable margin. It's basically the equivalent of a US$50 graphics card, a budget model that's limited to lower resolutions or less demanding titles if comfortable framerates are to be had.
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