Quad vs Dual 6870 help | Bitcointalksearch.org

ellipsis

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Quote from: newguy05 on June 15, 2011, 03:26:09 PM

Hi does anyone know if quad 6870 running on 890FXA-GD70 mobo is a good idea?

Sure, depending upon your requirements. It's a bit expensive if you are starting out now.

Quote from: newguy05 on June 15, 2011, 03:26:09 PM

I see most miners go for the dual card option instead of quad. Why is that?

Cooling. Cheap mobos.

Quote from: newguy05 on June 15, 2011, 03:26:09 PM

By having 4x card dont you save more on other hardware cost (no need for another set of mobo/cpu/memory) as well as less electricity?

You sure do.

Quote from: newguy05 on June 15, 2011, 03:26:09 PM

Is there some hidden inefficiencies in the quad card setup that makes them less ideal?

There is almost no clearance between the dual-slot cards if you have adjacent ones. You should get some PCIe cables or extenders or wedge them apart and get some fans blowing on them.

quattro

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4x 6870s runs just fine... they are the replacement of the 5830.

fascistmuffin

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Just remember that mining BTC isn't a get rich quick. It'll take a while to pay off for new hardware & electricity.

newguy05

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Someone is sitting in the shade today...

Thanks, if those are the only concern then they seem pretty minor. On cyberpowerpc they only allow you to configure 3x graphic card (5870) which comes out to be around $1300 total, seems very reasonable for a mining rig.

Do you guys think that's a good rig to buy that has a nice balance between mhash/sec and cost? Should hit 1200 mhash/sec with minor tweaks.

fascistmuffin

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I think the main concern with quad card setups is the PSU. I'm not too sure about 6870's power usage, but you'll probably need a beefy (1000W+) power supply to support four cards under constant load. Also, the risk of investing in four cards is greater than the investment of two.

newguy05

hero member

Activity: 1316

Merit: 503

Someone is sitting in the shade today...

Hi does anyone know if quad 6870 running on 890FXA-GD70 mobo is a good idea? I see most miners go for the dual card option instead of quad. Why is that? By having 4x card dont you save more on other hardware cost (no need for another set of mobo/cpu/memory) as well as less electricity? Is there some hidden inefficiencies in the quad card setup that makes them less ideal?

thank you

Topic: Quad vs Dual 6870 help (Read 1456 times)