Hey noogia93,
You are right – CPU and memory don’t have much bearing on mining , they just tend to eat power.
I’ve found the bitcoin wiki particularly helpful when making hardware comparisons.
https://en.bitcoin.it/wiki/Mining_hardware_comparisonAccording to the wiki, two 6990’s will give you around 1,340 MH/s and draw 692 watts before any under / overclocking. Four 5830’s would give you around 1,000 MH/s and draw 716 watts again before any under / overclocking.
I think a 850w psu should be enough, but you may want to step up to 1000w, just in case, up to you.
I haven’t actually gone for the four cards myself yet, I understand that they require a pci-e riser to connect to the 1x slots in my mobo, along with 8 pci-e power connectors on the psu (or Molex to PCI-e power adaptors). Perhaps someone on this forum with a four card rig can help a couple of newbies out?
So your choice is to pay more for the two 6990’s (and have an easier set up) or to go for the (cheaper) four 5830’s (but potentially a trickier build)
Hope it helps.
I do agree on the 2x 6990 (vs the 4x 5830 build - given you already have the cash to buy dual 6990s) - plus you can probably add 2 more 6990s in later for your 2x 6990 or sell your cards for cash/run them in crossfire for good gaming performance..
5830 build is more for entry/low budget rig (or for people who do not have the cash to buy 6990)
Show Posts
