- May 25, 2011
- 3
- 0
- 18,510
Hi all.
I am putting together a new system and i have already bought most of the components. however i have a question about how PCIE lanes work when you have multiple cards, or more specifically:
i have 2 Asus Direct CUII 580GTX's and one XFX 9800GTX+ that i want to SLI, using the 9800 as a dedicated physx card. on the GA-P67A-UD7-B3 motherboard which i am most likely buying (i have seen that a lot of people have said things on here about it, and the big sticky on gigabyte boards but i like them and they have never caused me any issue, my last 3 have always performed fine) and in the specs of the board it lists the PCIE lanes working as:
2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots.
2 x PCI Express x16 slots, running at x8 (PCIEX8_1, PCIEX8_2)
* The PCIEX8_1 slot shares bandwidth with the PCIEX16_1 slot and the PCIEX8_2 slot with PCIEX16_2. The PCIEX16_1/PCIEX16_2 slot will operate at up to x8 mode when the PCIEX8_1/PCIEX8_2 is populated.
1 x PCI Express x1 slot
(All PCI Express slots conform to PCI Express 2.0 standard.)
2 x PCI slots
(taken straight from their specsheet)
is it possible to connect these cards so that the 2 gtx580 will have 16x bandwidth and that the 9800 only runs at 8x? or something similar so that at least the main card will run in a 16x lane.
the rest of the components (for anyone who's interested are:
Intel 2600K
GA-P67A-UD7-B3
12GB corsair dominator GT CMT12GX3M3A2000C9
2 x WD 600GB sata3 raptors in raid 0
2 x 1TB seagate HDD sata2
1 x 1.5TB WD green 7200
Pioneer BD burner
Asus DVD burner
Level 10 GT
thermaltake grande 1200w
zalman cnps9900MAX cooler
bonus question for extra credit (yes i do want an answer
): is it worth getting 24GB of ram instead of sticking with just 12GB?
thanks guys.
EDIT: i should note that i'm running windows 7 64 bit (or that ram would be pointless)
I am putting together a new system and i have already bought most of the components. however i have a question about how PCIE lanes work when you have multiple cards, or more specifically:
i have 2 Asus Direct CUII 580GTX's and one XFX 9800GTX+ that i want to SLI, using the 9800 as a dedicated physx card. on the GA-P67A-UD7-B3 motherboard which i am most likely buying (i have seen that a lot of people have said things on here about it, and the big sticky on gigabyte boards but i like them and they have never caused me any issue, my last 3 have always performed fine) and in the specs of the board it lists the PCIE lanes working as:
2 x PCI Express x16 slots, running at x16 (PCIEX16_1, PCIEX16_2)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots.
2 x PCI Express x16 slots, running at x8 (PCIEX8_1, PCIEX8_2)
* The PCIEX8_1 slot shares bandwidth with the PCIEX16_1 slot and the PCIEX8_2 slot with PCIEX16_2. The PCIEX16_1/PCIEX16_2 slot will operate at up to x8 mode when the PCIEX8_1/PCIEX8_2 is populated.
1 x PCI Express x1 slot
(All PCI Express slots conform to PCI Express 2.0 standard.)
2 x PCI slots
(taken straight from their specsheet)
is it possible to connect these cards so that the 2 gtx580 will have 16x bandwidth and that the 9800 only runs at 8x? or something similar so that at least the main card will run in a 16x lane.
the rest of the components (for anyone who's interested are:
Intel 2600K
GA-P67A-UD7-B3
12GB corsair dominator GT CMT12GX3M3A2000C9
2 x WD 600GB sata3 raptors in raid 0
2 x 1TB seagate HDD sata2
1 x 1.5TB WD green 7200
Pioneer BD burner
Asus DVD burner
Level 10 GT
thermaltake grande 1200w
zalman cnps9900MAX cooler
bonus question for extra credit (yes i do want an answer
): is it worth getting 24GB of ram instead of sticking with just 12GB?thanks guys.
EDIT: i should note that i'm running windows 7 64 bit (or that ram would be pointless
)
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