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PCIe x16 vs. PCIe 2.0: Is there a difference?

Last response: in Motherboards
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November 22, 2007 9:03:25 PM

I'm looking to run only one graphics card, and I believe a P35 based board would be fine for me. Under the specs of the P35 I'm looking at, it lists one PCIe x16 slot. Under a similar x38 board, I'm seeing two PCIe 2.0 x16 slots. For just one slot, is there a difference between PCIe x16 and PCIe 2.0 x16?
November 22, 2007 9:17:17 PM

I understand that, but is a PCIe x16 actually a PCIe 2.0 slot? (ie: do P35 boards have one PCIe2.0 slot, whereas x38 has two PCIe 2.0 slots?)
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November 22, 2007 9:18:43 PM

On current cards... probably not. In the future I would think so.
November 22, 2007 9:19:34 PM

Ahh, okay, I just checked wikipedia...x38 is the first true PCIe 2.0 boards.
November 22, 2007 9:21:25 PM

Well the P35 boards have PCIe x16 slots...Well currently it doesn't really matter because no cards benefit from PCIe 2.0. Just to let you know if you didn't, any cards that uses the PCIe 1.0 slots can be used on 2.0 slots and vice-versa.
November 22, 2007 10:47:41 PM

I know. I also know that the 8800GT, the 3870, and all cards that are coming after them will be PCIe 2.0. I'm wondering specifically if running these cards in a non-PCIe 2.0 mobo (ie: P35) will have a performance hit.
November 22, 2007 11:05:13 PM

dont know neither
November 22, 2007 11:06:27 PM

no, hell a 8800GTX doesn't even use the full PCIE x16 bandwidth.
November 22, 2007 11:11:49 PM

PCIe2.0 Spec also offers more power through the bus... so technically we shouldnt need to plug so many power cables into the buggars
May 7, 2008 6:55:23 AM

Evilonigiri said:
Well the P35 boards have PCIe x16 slots...Well currently it doesn't really matter because no cards benefit from PCIe 2.0. Just to let you know if you didn't, any cards that uses the PCIe 1.0 slots can be used on 2.0 slots and vice-versa.

so if i had only one pci-e x16 slot i could still use a pci-e 2.0 x16????
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