Hybrid CrossFire | Dual Graphics
AMD’s Kaveri APUs bring support for Hybrid CrossFire. With Kaveri AMD is now naming the system “Dual Graphics” but it is essentially the same thing. Below you can see how the Dual Graphics performance scaled with faster memory. Please see our dedicated article to Dual Graphics if you’re interested in reading more about it.
We observed similarly impressive scaling with hybrid crossfire as we did with iGPU gaming. If we were to have achieved the “best” performance we would have had to match our R7 250 with our APU in terms of memory speed – so 2400MHz on both (1200MHz actual). Yet our R7 250 was only capable of 2000MHz (1000MHz actual) so the results weren’t as good as they could have been. All things said the scaling is still impressive ranging from 10% to 20%.
Just like with the APU memory scaling we saw slight increases in power consumption with hybrid crossfire. Removing bottlenecks associated with memory means more performance but more power consumption as a result. However, the increases are tiny so there isn’t much to complain about.
great work there fella, a good in depth look at kaveri, and good luck with the overclocking, I found it hard, but that was on an FM1 chipset, with a 1600mhz kit, looking at this report, seems I should have went for a 1866 or 2133 kit, then tried to overclock, thanks for the info, and the time and effort put into these kaveri reports, Cheers !
Great article. I wasn’t sure how much memory was too much or too little with the new chips. Also thanks for including a page looking at the Dual Graphics impact.
Would have been a much better article if you would have also included overclocking… of both CPU, iGPU and RAM… While for gaming, something like 4-4,4GHz would have been enough, reaching 900+ MHz on the iGPU and going above 2400MHz on the RAM would have been amazing. 2400 and above might not matter at stock, but when you manage to go to the 1020MHz preset or above on the iGPU… then I’m pretty sure the memory limitations would start to matter a lot more again.
A bit late…but we did test with 2400MHz and an overclocked iGPU here:
http://www.eteknix.com/amd-kaveri-a10-7850k-overclocking-unleashing-gcns-potential/all/1/
We didn;’t overclock the CPU at the same time because doing so will cause the iGPU to thermal/power throttle even when turning APM off.
Kingston 8gb Hyperx Fury 1866mhz , A10-7850K, Asus GT610 2gb ddR3 Graphics card,
asus A88X-Gamer FM2+ Intex 450 wat Smps
can i do below activity in this configuration
AMD Kaveri A10 7850K APU Overclocked… To 4.7 GHz
please guide me
thanks a lot. really helpful.