WHAT WORKS
Motherboard Brand: MSI
Motherboard Model & PCIe slots: 890FXA-GD70, 5 x16(2 x16, 2 x8, 1 x4), 1 x1
Power Supply Brand & Model: CORSAIR Professional Series Gold AX1200
Number & Model GPUs: 5x5850
Extender Cables w/Molex Power?: 5 extenders (x16 to x16) not powered.
Topic: Motherboards: What Works w/Four or More GPUs? List Them - page 6. (Read 53356 times)
WHAT SEMI-WORKS (you need Voodoo)
Motherboard Brand: Asus
Motherboard Model & PCIe Slots: P8Z68-V, 3 x16, 2 x1
Power Supply Brand & Model:Corsair GS800Cooler Master SilentPro 1000W
Number & Model GPUs: 2x 5850,1 2x 5830, 1x 5770
Extender Cables w/Molex Power?: All x1->x16 unpowered extenders apart from single x16->x16 unpowered extender in the second (grey) x16 slot. Weird but works
This board has 5 PCIe slots, however I can't get all five recognised even with the 'X1' setting in the BIOS. Four works, and is completely stable. There is a possibility that five would work if a Molex-augmented extender is used, assuming the problem is total PCIe slot power consumption
NOTE - all 5 are now working, powered extenders are not the problem. Instead, the second x16 slot (grey) seems to *require* a full-width x16->x16 extender cable, whereas all the other slots are happy with x1->x16 extenders. Weird, since this requirement doesn't extend to the other TWO full-width x16 slots. It's sold as a 'tri-fire' capable board, but the second (middle, grey) slot seems to be 'special'... Anyway, all slots now feed cards and are mining, flat out & overclocked - and seems to be stable. I'll edit this again if I start seeing instability or frequent lockups / crashes, or the whole thing catches fire
Incidentally... there may be a way to get the magick grey slot to recognise a card in an x1->x16 extender using that 1-18 (or whatever it is) presence pin short trick. I haven't tried, mainly due to fear of shorting the wrong pins, but would make good research... bloody freakoid Asus
EDITED AGAIN - a change of PSU and shuffling around of GPUs resulted in the board not recognising some of the GPUs again. Worse still, it wasted an hour of my time by failing the POST and giving the 'no memory installed' error, when there were two sticks of RAM installed. After trying all possibilities of RAM slots, including using new RAM, it turned out to be a GPU that had failed and the RAM was fine. The board gives false error reports. I'd avoid this board at ALL COSTS, it's not worth the hassle. I've taken the CPU out and put it in another one of the boards below, which work perfectly.
WHAT WORKS
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-H61M-D2-B3, 1 x16, 3 x1
Power Supply Brand & Model: iCute Titanium 900W (yeah, I know...)
Number & Model GPUs: 1x 5830, 3x 5770
Extender Cables w/Molex Power?: 5770s on x1->x16 unpowered risers, the 5830 chained on a x1->x1 then x1->x16 !!
This crap PSU auto-trips as soon as power draw from the cable (using a decent mains power analyser) exceeds 750W, so is NOT a 900W supply and is a scam. Hence the use of 5770s - this board was going to have a load of 5830s plugged in. However, this board is recommended since it's micro-ATX and small, but supplies proper power to all 3 of the x1 PCIe slots. All cards are overclocked and the board is completely stable - even with a daisy-chained extender to the 5830!
I've now bought 4 of these boards. They are BRILLIANT and work with every combination of GPU and PSU I've tried. My main shelf rig uses three of these logic boards. One has a Corsair 800W PSU and four 5830 GPUs. One has a Cooler Master 850W PSU, three 5850 GPUs and one 5830 GPU. The last has a Cooler Master 1000W PSU and four 6950 GPUs. Everything is rock solid - all GPUs are on extenders, and one even daisy-chains two extenders together. IMO this is the BEST BOARD for bitcoin mining if you're building your own frame rigs.
Motherboard Brand: Asus
Motherboard Model & PCIe Slots: P8Z68-V, 3 x16, 2 x1
Power Supply Brand & Model:
Number & Model GPUs: 2x 5850,
Extender Cables w/Molex Power?: All x1->x16 unpowered extenders apart from single x16->x16 unpowered extender in the second (grey) x16 slot. Weird but works
This board has 5 PCIe slots, however I can't get all five recognised even with the 'X1' setting in the BIOS. Four works, and is completely stable. There is a possibility that five would work if a Molex-augmented extender is used, assuming the problem is total PCIe slot power consumption
NOTE - all 5 are now working, powered extenders are not the problem. Instead, the second x16 slot (grey) seems to *require* a full-width x16->x16 extender cable, whereas all the other slots are happy with x1->x16 extenders. Weird, since this requirement doesn't extend to the other TWO full-width x16 slots. It's sold as a 'tri-fire' capable board, but the second (middle, grey) slot seems to be 'special'... Anyway, all slots now feed cards and are mining, flat out & overclocked - and seems to be stable. I'll edit this again if I start seeing instability or frequent lockups / crashes, or the whole thing catches fire
Incidentally... there may be a way to get the magick grey slot to recognise a card in an x1->x16 extender using that 1-18 (or whatever it is) presence pin short trick. I haven't tried, mainly due to fear of shorting the wrong pins, but would make good research... bloody freakoid Asus
EDITED AGAIN - a change of PSU and shuffling around of GPUs resulted in the board not recognising some of the GPUs again. Worse still, it wasted an hour of my time by failing the POST and giving the 'no memory installed' error, when there were two sticks of RAM installed. After trying all possibilities of RAM slots, including using new RAM, it turned out to be a GPU that had failed and the RAM was fine. The board gives false error reports. I'd avoid this board at ALL COSTS, it's not worth the hassle. I've taken the CPU out and put it in another one of the boards below, which work perfectly.
WHAT WORKS
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-H61M-D2-B3, 1 x16, 3 x1
Power Supply Brand & Model: iCute Titanium 900W (yeah, I know...)
Number & Model GPUs: 1x 5830, 3x 5770
Extender Cables w/Molex Power?: 5770s on x1->x16 unpowered risers, the 5830 chained on a x1->x1 then x1->x16 !!
This crap PSU auto-trips as soon as power draw from the cable (using a decent mains power analyser) exceeds 750W, so is NOT a 900W supply and is a scam. Hence the use of 5770s - this board was going to have a load of 5830s plugged in. However, this board is recommended since it's micro-ATX and small, but supplies proper power to all 3 of the x1 PCIe slots. All cards are overclocked and the board is completely stable - even with a daisy-chained extender to the 5830!
I've now bought 4 of these boards. They are BRILLIANT and work with every combination of GPU and PSU I've tried. My main shelf rig uses three of these logic boards. One has a Corsair 800W PSU and four 5830 GPUs. One has a Cooler Master 850W PSU, three 5850 GPUs and one 5830 GPU. The last has a Cooler Master 1000W PSU and four 6950 GPUs. Everything is rock solid - all GPUs are on extenders, and one even daisy-chains two extenders together. IMO this is the BEST BOARD for bitcoin mining if you're building your own frame rigs.
WHAT DOESN'T WORK
Motherboard Brand: MSI
Motherboard Model & PCIe slots: 890FXA-GD65, 2 x16, 4 x1
Power Supply Brand & Model: Antec HCP 1200 Gold
Number & Model GPUs: 3 5850, 2 5830
Extender Cables w/Molex Power?: 2 extenders w/molex, 3 extenders without
RMA'd this board as defective even though it WOULD support 3 GPUs with stable hashrate.
Motherboard Brand: MSI
Motherboard Model & PCIe slots: 890FXA-GD65, 2 x16, 4 x1
Power Supply Brand & Model: Antec HCP 1200 Gold
Number & Model GPUs: 3 5850, 2 5830
Extender Cables w/Molex Power?: 2 extenders w/molex, 3 extenders without
RMA'd this board as defective even though it WOULD support 3 GPUs with stable hashrate.
I was thinking of getting this board to run a 4xGPU system, but it does seem to be tricky. Found this post on this thread:
https://bitcointalk.org/index.php?topic=16474.msg264666;topicseen#msg264666
I'm using a GIGABYTE GA-890FXA-UD5 with 4x5830 and I had a fairly fun time getting it to work. I finally managed, though, and it's running correctly with two cards plugged directly into the mobo and two on x1-to-x16 adapter riser cables (one plugged into an x1 slot on the mobo, another into an x16 slot). The key break-through I finally had was swapping around the card configurations until all four could be seen in lspci, then running aticonig --initial --adapter=all -f one or two times with intervening reboots. Eventually all four cards could be seen.
Of course this is in Linux (Linuxcoin booting off a USB drive with persistence, specifically), so I don't know how relevant it is to you in Windows.
Of course this is in Linux (Linuxcoin booting off a USB drive with persistence, specifically), so I don't know how relevant it is to you in Windows.
WHAT DOESN'T WORK
Motherboard Brand: MSI
Motherboard Model & PCIe slots: 890FXA-GD65, 2 x16, 4 x1
Power Supply Brand & Model: Antec HCP 1200 Gold
Number & Model GPUs: 3 5850, 2 5830
Extender Cables w/Molex Power?: 2 extenders w/molex, 3 extenders without
RMA'd this board as defective even though it WOULD support 3 GPUs with stable hashrate.
Motherboard Brand: MSI
Motherboard Model & PCIe slots: 890FXA-GD65, 2 x16, 4 x1
Power Supply Brand & Model: Antec HCP 1200 Gold
Number & Model GPUs: 3 5850, 2 5830
Extender Cables w/Molex Power?: 2 extenders w/molex, 3 extenders without
RMA'd this board as defective even though it WOULD support 3 GPUs with stable hashrate.
WHAT WORKS
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-H61M-D2H-B3 1x PCIE16x, 3x PCIE1x.
Power Supply Brand & Model: Thermaltake 775W Tough Power
Number & Model GPUs: 4x Sapphire 5850 Extreme
Extender Cables w/Molex Power?: Using Risers WITHOUT molex power
WHAT DOESNT WORK
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-H61M-D2H-B3 1x PCIE16x, 3x PCIE1x.
Power Supply Brand & Model: Thermaltake 700w Lite Power
Number & Model GPUs: 4x Sapphire 5850 Extreme
Extender Cables w/Molex Power?: Using Risers WITHOUT molex power
700w Lite Power cannot output more than 550w, computer will hard reset.
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-H61M-D2H-B3 1x PCIE16x, 3x PCIE1x.
Power Supply Brand & Model: Thermaltake 775W Tough Power
Number & Model GPUs: 4x Sapphire 5850 Extreme
Extender Cables w/Molex Power?: Using Risers WITHOUT molex power
WHAT DOESNT WORK
Motherboard Brand: Gigabyte
Motherboard Model & PCIe Slots: GA-H61M-D2H-B3 1x PCIE16x, 3x PCIE1x.
Power Supply Brand & Model: Thermaltake 700w Lite Power
Number & Model GPUs: 4x Sapphire 5850 Extreme
Extender Cables w/Molex Power?: Using Risers WITHOUT molex power
700w Lite Power cannot output more than 550w, computer will hard reset.
OK, catfish and I have had some bad experiences (read expensive) with motherboards that fail to support four or more GPUs even though they have five or even six PCIe slots. We want this to be a single thread info source on motherboards that have been proven to fully function with four or more cards (and those that don't).
PLEASE, use the following format:
WHAT WORKS
Motherboard Brand:
Motherboard Model & PCIe Slots:
Power Supply Brand & Model:
Number & Model GPUs:
Extender Cables w/Molex Power?:
WHAT DOESN'T WORK
Motherboard Brand:
Motherboard Model & PCIe Slots:
Power Supply Brand & Model:
Number & Model GPUs:
Extender Cables w/Molex Power?:
PLEASE, use the following format:
WHAT WORKS
Motherboard Brand:
Motherboard Model & PCIe Slots:
Power Supply Brand & Model:
Number & Model GPUs:
Extender Cables w/Molex Power?:
WHAT DOESN'T WORK
Motherboard Brand:
Motherboard Model & PCIe Slots:
Power Supply Brand & Model:
Number & Model GPUs:
Extender Cables w/Molex Power?:
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