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Do I need GPU in a certain PCI Slot?

post #1 of 6
Thread Starter 
This is for my sig rig, AsRock P67 Extreme4. I'm wondering if I can put my GPU in a different slot, such as a lower slot, instead of the one right next to my CPU. There's like a 1cm gap between my GPU and my CPU Heatsink, which I think might be causing some higher than desirable temps on my CPU. My GPU runs about 50c during Idle.

Thanks!
Alice
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Alice
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post #2 of 6
You can definately place it there, but it will run at 8x speed.

8x vs 16x is 1-2% less performance max, so if temperatures are lower I would say it is definately worth it
post #3 of 6
The second PCIe slot is x8 electrically but will not heavily affect it's performance (less than 5% at best). Don't use the last x16 slot as that is handled by the chipset.
post #4 of 6
Yes you can, you should check your mobo specs to make sure it's an x16 slot, but it should work perfectly fine. An x8 slot will also work fine, but you'd lose a little (1-2%) of speed from the GPU.
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post #5 of 6
Thread Starter 
Yeah, the manual "recommends" that you place it in the top slot.

3 x PCI Express 2.0 x16 slots (PCIE2/PCIE4: single at x16 or dual at x8/x8 mode; PCIE5: x4 mode)

That's what the description is. Does that mean I can run PCIE4 at 16x as long as I have only one card? Or will it go to X8 anyways?

Either way, I think I'm gonna move it and see if it affects my CPU temps since x16 and x8 are pretty much the same.

Thanks!
Alice
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Samsung 840 Wester Digital RE4 (Raid0) Seagate Barracuda Windows 7 64bit Pro 
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Alice
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CPUMotherboardGraphicsRAM
2600K @ 4.6Ghz (1.400v) AsRock Extreme 4 Sapphire 7970 1125/1575 G.Skill RipjawsX DDR3 1600 CL8 (4x4Gb) 
Hard DriveHard DriveHard DriveOS
Samsung 840 Wester Digital RE4 (Raid0) Seagate Barracuda Windows 7 64bit Pro 
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2x Asus VW246H Qnix QX2710 Ducky DK1008 (Mx Red) Corsair HX1000 
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NZXT Phantom Razer Deathadder 
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post #6 of 6
Quote:
Originally Posted by Phry View Post
Yeah, the manual "recommends" that you place it in the top slot.

3 x PCI Express 2.0 x16 slots (PCIE2/PCIE4: single at x16 or dual at x8/x8 mode; PCIE5: x4 mode)

That's what the description is. Does that mean I can run PCIE4 at 16x as long as I have only one card? Or will it go to X8 anyways?

Either way, I think I'm gonna move it and see if it affects my CPU temps since x16 and x8 are pretty much the same.

Thanks!
it is a physical 16x slot, but only wired for 8x. if you put a card in there it will be forced to run in 8x speed
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