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[LR] Llano Black Edition coming in Q4 2011 A8-3870 - Page 7

post #61 of 63
Quote:
Originally Posted by Farmer Boe;14398636 
Sorry to be a bit off topic but since we are talking about crossfiring the apu and gpu, I have a question. I'm actually getting one of these FM1 3850's for my download/media rig with gaming at low resolutions. Which gpu would be good for crossfire that wouldn't be hindered by the apu throttling it? I'm thinking that a 6670 would be hindered when paired up with the onboard graphics. Would the 6570 be the best bet? And does any company make a passive one? I haven't seen one thus far. Thanks everyone!

http://www.newegg.com/Product/Product.aspx?Item=N82E16814161374

The 6670 might perform a bit better, but yeah when paired with the onboard graphics it would probably be throttled. It'd be like good ol' Hybrid CrossFire with a 4670 and onboard 800-series chipset graphics... not that good. (Okay, that's probably an exaggeration, but you get the picture.)
Edited by Usario - 7/29/11 at 8:55pm
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post #62 of 63
Anyone.. Bueller..?

I have never read anything, that has said that FM1 socket, will not work with the 6970, or any other grphx card.

Crossfire cease to exist, when it no longer makes sense. At that level, the APU no longer does discreet graphics co-processing.. & is able to use all it's power toward strait CPU stuff.

Or, at least that is the way I understood the slides.
post #63 of 63
The APU's GPU section is a GPU in its own right and can cross fire with any 65-- or 66-- processor.

The problem is memory bandwidth. In most benchmarks/tests, you get a 5-7 fps gain from going from DDR3 1333 Mhz to DDR3 1600 Mhz, and another 4 FPS going up to 1833 Mhz.


So, when DDR3 2100 becomes widely available in many games, you'll get double the performance compared to using DDR3 1333 Mhz.

As such, crossfiring with a higher-end GPU makes little to no sense unless you're also using really, really fast RAM.


(As a side-note, in all tests I've seen, RAM timings have made little to no difference in the overall performance, so it is just speed and not latency that is the main thing here).


However, for the mainstream user, an APU in crossfire with a 6570 or a 6650 ought to be able to play every game out there at lower resolutions at medium/low settings fluidly, which is a huge step up from any other integrated or semi-integrated solution to date.


Quote:
Originally Posted by sLowEnd View Post
Why would anyone want to overclock an HTPC?
HTPCs aren't exactly paragons of performance, and many use small enclosures. (Accompanied with small heatsinks and comparatively low airflow)
The point is that you could buy an HTPC and use it for medium/low end gaming as well. There ought to be graphical performance in there with the addition of a low-power (silent?) GPU to rival/beat the current generation of consoles, as well as giving you a very nice all-around PC.


It's not designed for the majority of users on this forum. If you want 67-- series (or above) performance levels, you want to use a discrete GPU - the memory bandwidth issues with DDR3 are just too severe to allow anything to approach that, even in crossfire.


However, for people just entering this forum in a year's time with these, it'll be a smart upgrade to suggest a 6550 to double their FPS, and to overclock their BE processor to get better FPS in Starcraft 2 or Civilization.
Edited by Korlus - 7/30/11 at 3:25am
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