Using the GPU in an A-Series "Trinity" APU

[dialingwand]

Hi there, long time lurker, first post.

I have an A-series APU in my first little rig and I was wondering if anyone had managed to get the GPU therein, limited as it may be, to work alongside bigger discreet GPUs.

I had to disable it to get the system to post with two discreet GPUs installed and have no idea if such a thing could work, but it would be nice to put the little guy to work, even if we're only talking a few extra Mh/s.

[thesnoo23]

I've poked around with that as well, but haven't been able to get anything worth getting with it.  But I would be very interested in anyone who HAS. I have an ungodly number of computers sitting in this room with me, and would absolutely plug them up and get them to work if it was economically viable.

[dialingwand]

I can't seem to even find an BIOS/UEFI option to allow both, even though there seems be a lot of dual-GPU marketing rhetoric.

I do imagine if you had an array of machines and could tap into the unused on-board GPU, a lot of the "little" workers could add up with no noticeable effect on the end user!

Either way, I'll keep digging!

[thesnoo23]

actually, my main concern isn't how much is done per processor, but rather, the power efficiency. Right now, for instance, if I run a processor, with a good one i might get as high as ~20 kH/s with litecoin, at a cost of ~125 watts, which is not viable at all. That and initial price are my main concerns when looking at mining equipment.

[dialingwand]

Good point. I tried hashing for litecoins on a quad-core Xeon and the power requirements were through the roof for what was a very poor rate.

[thesnoo23]

Good point. I tried hashing for litecoins on a quad-core Xeon and the power requirements were through the roof for what was a very poor rate.

AMD has some multi core processors that are more power efficient than previous versions, and better than a xeon, certainly, but they still aren't viable for making a profit

[dialingwand]

Regarding the issue at hand, was I mistaken to believe the the GPU in the A-series was somehow separate from the CPU?

I sort of imagined that I could run the GPU at full tilt without using the CPU cycles and therefore reduce heat/power consumption. I might as well tackle my assumption before tackling the physical problem itself.

[shakezula]

I tried this with the 6410 in my new F55 board, no such luck. When the 7950s not on the board it can be used in Bitminter but that's about it...11Mh/s.

[dialingwand]

Thanks for sharing. I thought it would be low, but not that low. Isn't really surprising I guess.

[saneczki]

I got one a10 5800K and bitminter i cant mine on them (extra) with 7970s

[Miner_LTC_BTC]

I got one a10 5800K and bitminter i cant mine on them (extra) with 7970s

Why ? What's wrong. Theoretically it is only an extra GPU. What system do you use?