AMD A10 7800 is now capable of CrossFire with other GPUs ?

[Cryio]

This is the review that made me question this: http://www.tomshardware.com/reviews/amd-a10-7800-kaveri-apu-efficiency,3899-10.html

It got me confused because on page 6 they wrote this:
"We want to test AMD's APU as it sits on the motherboard. I see no point in buying a processor that emphasizes on-die graphics and then adding a Radeon R7 265X, even in CrossFire. Such a configuration makes little sense from the cost and technical angles. Yes, AMD officially recommends it and yes, we tried it out".

When Kaveri launched, the APUs were able to crossfire only with R7 240 and R7 250X. Now they stated that they managed to crossfire the A10 7800 with a 265X ? Since when has this been possible? I want to know if this is correct.

If it's now possible, why hasn't anyone made an article of this? I want to see benchmarks. I have a friend with a 260X and he bought that GPU especially for the possibility of CrossFire.

 

[Brunostako]

They didn't mean to do Crossfire with R7 265, just use the A10 CPU + R7 265 as normal configuration.

Dual graphics on Kaveri is only possible with R7 240 and R7 250.

 

[Slobodan-888]

Is that only a software (driver) limitation, or is it hardware one (due to RAM bottleneck)?

And what about R7 250X (I presume that there is no point, and only GDDR3 card is suitable)?

I some games, I think that it is possible to use discrete graphic card for, well, graphics and to use integrated GPU for helping CPU (by doing some parallel computing while CPU only does serial ones)? Does anyone knows what games support such a thing? I know that games that will have support for HSA will be able to do this, but what about now?

 

[Shadsy]

I think its a Driver limitation, I heard it might change in the future. it would be nice if the APU Radeon could talk to the PCIE Radeon. But you better off using a more powerful card then doing Dual Graphics. Imagen if you could use the R9 270X and also use True audio from the CPUs Radeon, my dream is that it will be possible someday

also This is what AMD though up but Dual Graphics and Crossfire is diffrent so you might confuse people if used the wrong term.

Dual Graphics = APU GPU and a DGPU talk to each other work with each other. (Example A10 7850 Radeon talking with a R7 250)

CrossFire = Two DGPU are connected with each other and talk to each other (example Two R9 280X connected in a PCIE and connected with a bridge cable)

I am sorry if I sound like a know it all. I also confused alot of people with this.

 

[foxmartin23]

i have a 7990 a 7970 and a r7 apu can i do quad crossfire then

 

[Shadsy]

Crossfire the 7970 & 7990 should be possible since they are the same GPUs with more or less shader counts. the 7990 is basicaly two 7970 on one chip. from what I get, so technicaly you would get a 3 way Crossfire.

Not sure how your electricity bill will take it thou, lol. I say if you only use the 7990 your more then OK. also be sure your PSU can take it.