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Topic: I have a 6850 what do i get next? - page 2. (Read 4966 times)

full member
Activity: 126
Merit: 100
May 07, 2011, 12:21:51 AM
#4
Ok, thanks for the reply  Smiley

Any recommendations on a cheap mobo to run 2 or more 5850?
Also, how much of a power supply do you think it will take to run two of those together? just speculating tough, not planning on doing that yet hehe

msi makes pretty good motherboards for mining.  a lot of people here use them.  i have a couple of their 870A-G54's, in two dual-PCIe miners.  they make motherboards with more slots than that.

just a personal preference here - if you're going to use AMD GPUs, you oughtta use AMD processors and chipsets.  works for me.

for your PSU, add 125% of your GPU running at 99% (in watts), to triple the wattage your CPU consumes.  hard drives are negligible.  fans are a bit - don't forget to add them in.  if your miner is dedicated it shouldn't even have things like speakers or CD/DVD drives.

so a 6850 (~150W) plus a 5850 (~180W) plus 25% = ~410.  plus a 45W Sempron single-core X3 = 135W.  plus 3W for an SSD and 25W for fans gives a grand total of about 575W.

a 650W PSU should do nicely.
full member
Activity: 228
Merit: 106
May 06, 2011, 11:42:53 PM
#3
Ok, thanks for the reply  Smiley

Any recommendations on a cheap mobo to run 2 or more 5850?
Also, how much of a power supply do you think it will take to run two of those together? just speculating tough, not planning on doing that yet hehe
full member
Activity: 126
Merit: 100
May 06, 2011, 11:26:07 PM
#2
a 5850 will get you about a 50% higher Mhash/sec rate - and should probably cost a touch less new, too (depending on the vagaries of brand availabilities and rebates).

seems pretty clear-cut.
full member
Activity: 228
Merit: 106
May 06, 2011, 10:30:25 PM
#1
Im actually just mining with and 6850 Cyclone at 231 Mhash with the core clock at 925, running stable at 63°

I was planning on getting a 5850 to put in the same PC with a VGA dummy to mine, but I was wondering if it would be better for me to just buy another 6850. What do you recommend?
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