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[AF>BOINC@MONACO] NOVAK

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Message 26725 - Posted: 30 Jun 2009, 3:23:53 UTC

Hi,

Does it matter to use a PCI-e x16, x8, x4?
I have a Asus P5k with 1 PCIx16 and 1 PCIx4
Can i use it with a 4870 and a 4850?
Will it be faster with 2 PCIx16 or 2 PCIx8?

Thank you

Eric
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Message 26733 - Posted: 30 Jun 2009, 7:44:59 UTC - in response to Message 26725.  

Now I'm crunching with two ATI4850 in a PC with 2 PCIe x8 and I'm getting approximately twice the credit that I got before, when I was crunching with one ATI4850 in a PC with one PCIe x16.
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mtzki

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Message 26735 - Posted: 30 Jun 2009, 9:44:17 UTC

This host has 2x hd4870 on an Asus Commando with PCI-E v1 x16 / x4. I can't see any difference in the crunching times.
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Message 26819 - Posted: 1 Jul 2009, 8:18:41 UTC - in response to Message 26725.  

I have a Asus P5k with 1 PCIx16 and 1 PCIx4
Can i use it with a 4870 and a 4850?
Will it be faster with 2 PCIx16 or 2 PCIx8?


Hi,

I have the same board, don't worry about the bandwidth as you are using the GPU only. Overall you won't see any performance benefit for switching to 2x16x, although you will if you're gaming.

If anything the board is perfect as you're not wasting money for the dual 16x premium.

Just put you 4870 and 4850 in without crossfire and you'll be good to go.

Happy crunching
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[AF>BOINC@MONACO] NOVAK

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Message 26876 - Posted: 2 Jul 2009, 3:50:38 UTC - in response to Message 26819.  

Thanks for the info

Eric
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Message boards : Number crunching : PCI Express x16, x8, x4

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