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[Tweaktown] 8x PCIe Limits Highend GPUs - Page 3

post #21 of 32
Can I make one thing clear to everyone? PCI-E2.0 is an mode which PCI-E lanes can use to double their bandwidth, it only works when you have an electrically 16 lane PCI-E slot. That means x8 PCI-E2.0 doesn't actually exist.

I apologize, I misread an article and am mistaken.
Edited by RussianGrimmReaper - 6/19/08 at 4:27pm
post #22 of 32
Quote:
Originally Posted by RussianGrimmReaper View Post
Can I make one thing clear to everyone? PCI-E2.0 is an mode which PCI-E lanes can use to double their bandwidth, it only works when you have an electrically 16 lane PCI-E slot. That means x8 PCI-E2.0 doesn't actually exist.
Documentation?
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post #23 of 32
Haha, Imagine the bottlenecking on my motherboards PCIe! (4x electrical PCIe 1.1)
    
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post #24 of 32
DO'H my GTX'ses are ..maybe being bottlenecked...
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post #25 of 32
Quote:
Originally Posted by Somenoob View Post
What? Did you not read the article? The benchmarks do not lie...
My mistake, I read through the whole article and all it wants to tell us is if the user plans to do crossfire in the future, go with a x48 board, if not go with the p45.

On Newegg with the GIGABYTE X48T-DQ6 going for $310 and GIGABYTE P45-DQ6 $260 that is a 17%/$50 price difference and with that extra $50 you get DDR3 and full two-lane 16x PCIe. Therefore it call comes down to the buyer if DDR3 and 2x 16x PCIe for extra $50 is worth it.
Edited by OpTicaL - 6/20/08 at 5:25pm
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post #26 of 32
Leapin Lizards Batman! REALLY?! This is nearly as obvious as videofx's gayness. No offense to duckie.
Edited by mth91 - 6/20/08 at 5:26pm
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post #27 of 32
Quote:
Originally Posted by DuckieHo View Post
The P45 has PCIe 2.0 so that means x8 PCIe 2.0 has the same bandwidth as x16 PCIe 1.x. Now the question is does x16 PCIe 1.x bottleneck these cards?
AFAIK, PCIe 2.0 x8 does not exactly equal PCIe 1.1 x16. There was an article on this when PCIe 2.0 was first announced, I have no idea where to find it now. Maybe someone else can find it.

Anyway I am really glad I went X48 because I fully intend on getting dual 4870X2 cards for quad CFX.
Edited by 003 - 6/20/08 at 7:44pm
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post #28 of 32
Doesn't really matter to the majority of Mainboards out there since most GPUs don't use the full bandwidth of a x16 lane. x8 is sufficient for most of us, no surprise there.
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post #29 of 32
Dont know if this is the place to ask but is there a way to run a 8800 GTX for graphics and gaming and a cheaper weaker card to handle a third monitor?
and not run SLI on a x38 chipset?
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post #30 of 32
Quote:
Originally Posted by Darkice View Post
Dont know if this is the place to ask but is there a way to run a 8800 GTX for graphics and gaming and a cheaper weaker card to handle a third monitor?
and not run SLI on a x38 chipset?
Of course. However, for a question like that, you should have created your own thread.
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