26 May '13, 7am

Why can a motherboard have a big impact on mining performance? #bitcoin

I already posted a similar question in the Newbies section but now I have 5 posts I would like to ask the 'Big Boys' I put a 7950 into my own computer and I got it to mine scrypt at 630 Khash. Then I decided to build a custom rig for it and ordered a cheap motherboard, the Asus F2A55-M LE (AMD socket FM2 with a trinity processor). When I put the SAME 7950 card on this motherboard, I got the following error from cgminer: "Maximum buffer memory device 0 supports says 536870912, Your scrypt settings come to 1422917632" I had to lower my thread-concurrency all the way down to 7168 to get it to work. Also I can not push the intensity past 13 on this board or I will get hardware errors. On the first motherboard (Intel H67 chipset) I was mining happily at intensity 20 and thread-concurrency 21504 without any errors. I have tried all different BIOS settigs on the new board, disabl...

Full article: https://bitcointalk.org/index.php?topic=216518

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