Pairing apu with gpu

burns_brock

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Mar 22, 2014
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Was curious if I would be able to pair my amd a-10 6800k apu with something like a gtx 750ti or Radeon 7870 without bottlenecking
 
Solution
Well if you bought an Amd or Ati based based graphics card.
And have a A-10 6800k you can use hybrid cross fire.


In the old days you had to buy two cards of the same model eg: 7850 x 7850 with Cross fire.

But hybrid allows you to add the graphics shader of the APU in crossfire to another Ati based card in the Pci-e slot of the motherboard.

Or to off load from a Dedicated Pci based card, you can Set the Apu of the A-10 6800k to perform the physics calculations of a game.
Leaving the Pci-e based card to process the graphics calculations alone.

That leaves the cpu with less load so it can do all the other raw calculations needed. Applying physics to the cpu its self can cause a big hit on how a game performs. but with th advent of...
Well if you bought an Amd or Ati based based graphics card.
And have a A-10 6800k you can use hybrid cross fire.


In the old days you had to buy two cards of the same model eg: 7850 x 7850 with Cross fire.

But hybrid allows you to add the graphics shader of the APU in crossfire to another Ati based card in the Pci-e slot of the motherboard.

Or to off load from a Dedicated Pci based card, you can Set the Apu of the A-10 6800k to perform the physics calculations of a game.
Leaving the Pci-e based card to process the graphics calculations alone.

That leaves the cpu with less load so it can do all the other raw calculations needed. Applying physics to the cpu its self can cause a big hit on how a game performs. but with th advent of adding an Internal Gpu in the same die package.

Its another solution to free up the physical cpu part.

So if your intention is to do so stick with a Ati based card in the Pci-e slot.
Not an Nvidia based card. Or hybrid will not work.

A 7870 should pair ok in hybrid mode with a A-10 6800k Apu.




 
Solution


The answer to this question depends on many variables; the specific games you play, quality settings and resolution generally being the most important.
There is always going to be a bottleneck somewhere in your system, but your APU should not be a huge one for most games with a midrange GPU.
In any case, even if you are CPU bottlenecked, you will still have a significant gaming performance boost and still have the option of overclocking your CPU.

I would recommend reading through Anandtech's Choosing a Gaming CPU Article.
The A10-5800K they benchmark performs similarly to your A10-6800K and should be used as a point of reference.
In their conclusion they state the following about the A8-5600K; a slower APU than yours:

If I were gaming today on a single GPU, the A8-5600K (or non-K equivalent) would strike me as a price competitive choice for frame rates, as long as you are not a big Civilization V player and do not mind the single threaded performance. The A8-5600K scores within a percentage point or two across the board in single GPU frame rates with both a HD7970 and a GTX580, as well as feel the same in the OS as an equivalent Intel CPU. The A8-5600K will also overclock a little, giving a boost, and comes in at a stout $110, meaning that some of those $$$ can go towards a beefier GPU or an SSD. The only downside is if you are planning some heavy OS work – if the software is Piledriver-aware, all is well, although most processing is not, and perhaps an i3-3225 or FX-8350 might be worth a look.
 


While AMD Dual Graphics is an option, it is unfortunately not a very good one.
Only quite low end GPUs can be paired with an APU and the pairing results in an inconsistent performance boost at best.
Switching to a single, faster, GPU is a much better option than the current implementation of Dual Graphics.

Tom's own AMD Dual Graphics Analysis: Better Benchmarks; Same Experience?
 
Nice ninja edit, but you got a few things wrong Shaun o.



Unfortunately, you can not offload Physics calculations to the APU's GPU.
What you are thinking of is nVidia's Hardware Accelerated PhysX, which only supports CUDA enabled nVidia GPUs.
Even then, most PhysX games only use the CPU for the physics calculations, with only a Few of the Games Supporting GPU acceleration.



The fastest GPU that AMD confirms to work in Dual Graphics with the A10-6800K is the underwhelming HD 6670.
There are community reports of one faster GPU working, the HD 7750, but faster cards such as the HD 7870 unfortunately do not support Dual Graphics.

Image_09.jpg


Even with the few cards that do support Dual Graphics, performance increases are inconsistent.
Even in those cases where benchmarks do show a performance increase, micro stuttering issues cause the perceived gameplay to be just as stuttery as the IGP alone.

AMD Dual Graphics Analysis: Better Benchmarks; Same Experience?

Really, your best option is to get the best GPU you can afford without worrying about any gimmicks.