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Guru3D.com » Review » AMD A10-7870K Godavari APU review 4

AMD A10-7870K Godavari APU review 4

Posted by: Hilbert Hagedoorn on: 07/27/2015 09:07 AM [ 11 comment(s) ]

We review Godavari, the new A10-7870K APU from AMD. Initially intended for system-integrators who want to offer a nice APU at a reasonable price. However the 7870K today also will see the retail channel, the top dog APU from AMD is costing roughly 140 USD only and offers a nice balance in-between performance and energy consumption.

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Tagged as: amd

« The Witcher 3 Graphics Performance Review · AMD A10-7870K Godavari APU review · Gigabyte GeForce GTX 970 OC Mini-ITX review »

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Twiddles
Senior Member



Posts: 1155
Posted on: 07/27/2015 12:53 PM
Hilbert don't you test how much you can oc it?


I honestly can't think of a reason why. These CPU's are all exactly the same so any difference you see might as well be silicon quality A.K.A. the "silicon lottery" ;)

Fox2232
Senior Member



Posts: 11809
Posted on: 07/27/2015 12:58 PM
Hilbert don't you test how much you can oc it?

A10-7850K has that 95W TDP limit which prevented it from efficient OC as it simply throttled not once certain temperature been reached, but as it ate certain amount of power.
In other words, increasing voltage in belief that it improves OC clock and adds stability resulted in increased power consumption and lower performance.
I would be interested in seeing if AMD tweaked this in A10-7870k, but I do not expect that to happen as entire system in measurement topped at 120W.

- Would be interesting to do bench at default clock, add 100MHz, bench, add 100MHz bench, ...
- Then lower voltage a bit and bench at default clock, keep lower voltage, add 100MHz bench, ...
- And finally doing previous for bit higher voltage

Then create performance map for purpose of objectively seeing if & how TDP limits this APU.

If anything Carrizo is impressive part at 12/15/25/35W configurations due to HSA 1.0. A10-7850k is just for little play, I would not find long term purpose for it, tho one can fit it in very small box with like 180~220W PSU for maximum efficency.

95W w/ OC vs 35W.
95W w/o OC vs 35W.
Best of A10-7850k (4.7GHz) vs best of A10-7870k (4.5GHz).

leszy
Senior Member



Posts: 327
Posted on: 07/27/2015 06:09 PM
Very good review.

vbetts



Posts: 15139
Posted on: 07/27/2015 07:30 PM
Hilbert don't you test how much you can oc it?


APU's overclocking is limited, so best bet for these is to get high speed low timing ram, and boost the gpu and memory clocks up.

icedman
Senior Member



Posts: 1191
Posted on: 07/28/2015 01:47 AM
what amd has here is an amazing product they just desperately need a die shrink and minor cpu bump to compete.

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