Topic: Can Gigabyte GA-870A-UD3 support 2 GPU? (Read 2451 times)
Generally speaking, the perceived speed on the card in the PCIeX16 slot running at x4 would be one-fourth of normal due to the reduced throughput.
you munged up the specs, so i looked it up:
It sounds as if you'd be restricted to 4x on the second slot. Also, you should not have anything on the smaller "pci-x 1" slots, because those will not work at all when using slot 1 and 2. unless you added a wifi or tv decoder card to the 1x pci-x slots, then that should not concern you.
No idea how the 4x speed changes the mining behaviour tho. Does mining need a lot of i/o bandwidth? If yes, then you could be restricted by the reduced speed, if not, then go ahead.
1 x PCI Express x16 slot, running at x16 (PCIEX16)
1 x PCI Express x16 slot, running at x4 (PCIEX4) (Note 3)
2 x PCI Express x1 slots (The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot.) (Note 3)
(All PCI Express slots conform to the PCI Express 2.0 standard.)
3 x PCI slots
(Note 3) The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot. When PCIEX4 slot is populated with a x4 card, the PCIEX1_1 and PCIEX1_2 slots become unavailable.
1 x PCI Express x16 slot, running at x4 (PCIEX4) (Note 3)
2 x PCI Express x1 slots (The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot.) (Note 3)
(All PCI Express slots conform to the PCI Express 2.0 standard.)
3 x PCI slots
(Note 3) The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot. When PCIEX4 slot is populated with a x4 card, the PCIEX1_1 and PCIEX1_2 slots become unavailable.
It sounds as if you'd be restricted to 4x on the second slot. Also, you should not have anything on the smaller "pci-x 1" slots, because those will not work at all when using slot 1 and 2. unless you added a wifi or tv decoder card to the 1x pci-x slots, then that should not concern you.
No idea how the 4x speed changes the mining behaviour tho. Does mining need a lot of i/o bandwidth? If yes, then you could be restricted by the reduced speed, if not, then go ahead.
I plan to run 2 x HD 6870 (add one more) on this machine. I wonder what will be speed of the 2nd card if it is plugged into the PCIEX4 slot.
you munged up the specs, so i looked it up:
It sounds as if you'd be restricted to 4x on the second slot. Also, you should not have anything on the smaller "pci-x 1" slots, because those will not work at all when using slot 1 and 2. unless you added a wifi or tv decoder card to the 1x pci-x slots, then that should not concern you.
No idea how the 4x speed changes the mining behaviour tho. Does mining need a lot of i/o bandwidth? If yes, then you could be restricted by the reduced speed, if not, then go ahead.
1 x PCI Express x16 slot, running at x16 (PCIEX16)
1 x PCI Express x16 slot, running at x4 (PCIEX4) (Note 3)
2 x PCI Express x1 slots (The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot.) (Note 3)
(All PCI Express slots conform to the PCI Express 2.0 standard.)
3 x PCI slots
(Note 3) The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot. When PCIEX4 slot is populated with a x4 card, the PCIEX1_1 and PCIEX1_2 slots become unavailable.
1 x PCI Express x16 slot, running at x4 (PCIEX4) (Note 3)
2 x PCI Express x1 slots (The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot.) (Note 3)
(All PCI Express slots conform to the PCI Express 2.0 standard.)
3 x PCI slots
(Note 3) The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot. When PCIEX4 slot is populated with a x4 card, the PCIEX1_1 and PCIEX1_2 slots become unavailable.
It sounds as if you'd be restricted to 4x on the second slot. Also, you should not have anything on the smaller "pci-x 1" slots, because those will not work at all when using slot 1 and 2. unless you added a wifi or tv decoder card to the 1x pci-x slots, then that should not concern you.
No idea how the 4x speed changes the mining behaviour tho. Does mining need a lot of i/o bandwidth? If yes, then you could be restricted by the reduced speed, if not, then go ahead.
It looks and sounds as this board has 2 PCI-e slots? From what I've gathered you have 1 card in it now?
You should be able to fit 2 as long as they physically fit!
Confirm that you have 2 identical PCI-e slots and you're good to go.
You should be able to fit 2 as long as they physically fit!
Confirm that you have 2 identical PCI-e slots and you're good to go.
Thanks for your reply.
Yes. I only have 1 card now.
The part I am confused is that it says 1 PCI-e 16x, and the other PCI-e is 4x.
What is the difference between PCI-e 16x and PCI-e 4x?
Sorry for newbie question
It looks and sounds as this board has 2 PCI-e slots? From what I've gathered you have 1 card in it now?
You should be able to fit 2 as long as they physically fit!
Confirm that you have 2 identical PCI-e slots and you're good to go.
You should be able to fit 2 as long as they physically fit!
Confirm that you have 2 identical PCI-e slots and you're good to go.
A newbie question.
My Mobo is Gigabyte GA-870A-UD3 running a sapphire 6870.
From the manual:
1 x PCI Express x16 slot, running at x16 (PCIEX16) 1 x PCI Express x16 slot, running at x4 (PCIEX4) Note: The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot. When PCIEX4 slot is populated with a x4 card, the PCIEX1_1 and PCIEX1_2 slots become unavailable
I am a little confused. Will this motherboard allow me to add one more GPU for mining?
Thanks in advance!
My Mobo is Gigabyte GA-870A-UD3 running a sapphire 6870.
From the manual:
1 x PCI Express x16 slot, running at x16 (PCIEX16) 1 x PCI Express x16 slot, running at x4 (PCIEX4) Note: The PCIEX1_1 and PCIEX1_2 slots share bandwidth with the PCIEX4 slot. When PCIEX4 slot is populated with a x4 card, the PCIEX1_1 and PCIEX1_2 slots become unavailable
I am a little confused. Will this motherboard allow me to add one more GPU for mining?
Thanks in advance!
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