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boinc can only use 4 cores of fx-8320 ? - Page 2

post #11 of 15
I reckon that in the coming year that these APU's will start to be worth looking at. Assuming you have no download limits....

dunx
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post #12 of 15
Thread Starter 
slightly off topic but i'm really excited about the future of APUs especially if they have performance edition ones with good graphics chips in there so they can be crossfired with decent cards
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post #13 of 15
The biggest problem is the heat they produce, AMD's APU is limited by the total heat generated, joke is Intel have the low power product, but don't seem bothered to integrate "decent" GPU performance.

I expect the next generation to be aimed at use with new fangled 4K displays.

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post #14 of 15
Well, I don't know about the FM2 APU's, but I DO know about FM1...

The FM1 seem to be a shrink of Athlon type cores and run fine and not really hot at all. I've had one running over a year with TX3 heatsink and no problems. However, they have no L3 cache so FAST DRAM is needed to do well. System runs stock speed (A8-3850) at 36-38c...

I expect the BD cores in the FM2 won't run BOINC worth beans...

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post #15 of 15
DarkRyder, theres 2 integer cores and 2 128-bit fpu units per module, the fpu are joined as to be able to run a single 256bit unit in single threaded applications when possible. They also have individual pipelines. Its a different way to share resources then HT, and ends up being more effective in well threaded apps then HT, but doesn't scale like 8 cores due to some shared front end components. More 1.8 cores per module when run together.
As for Trinity vs Llano cpu tasks running in boinc, llano IS faster even with a "decent" overclock on llano vs a "pushed" on trinity,
This is as much a problem with windows/boinc as it is the chips, phoronix a10 test shows how much of a difference there is between the two. Phoronix test

GPU wise the a10-T demolishes the a8-L, Granted my a8 was locked and on an itx board (3+1vrms) so I couldn't max out the gpu the same but even with a 128 baseclock (774mhz - internal pll is inaccurate) it was doing hcc wu's in 13-15min, with the a10 at ~1150mhz without app file, ~8min, with I'm doing an average of ~6:30min
CPU tasks running per module and affinity locked as such didn't go noticably faster, although I'm not going to do any tests as the gpu is where the real work get done, so I'm not going to waste science time to measure this. Only ran it as such to empty my work buffer to update to new boinc.
A DSFL unit takes about ~3:00h at 4.4ghz running 5 gpu wu on 2 cores and 2 cores doing cpu. ~90% cpu load, 99% gpu load.
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