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[SA] Ivybridge to have PCI-E 3.0 - Page 7  

post #61 of 81
What exactly does PCI-E 3.0 mean? Faster GPUs?
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post #62 of 81
Quote:
Originally Posted by steelbom View Post
What exactly does PCI-E 3.0 mean? Faster GPUs?
More bandwidth for PCIe slots.

v1.x: 250 MB/s (2 Gb/s)
v2.x: 500 MB/s (4 Gb/s)
v3.0: 1 GB/s (8 Gb/s)

I'm fairly sure that's each way, too.
    
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post #63 of 81
i3
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post #64 of 81
Quote:
Originally Posted by Brutuz View Post
More bandwidth for PCIe slots.

v1.x: 250 MB/s (2 Gb/s)
v2.x: 500 MB/s (4 Gb/s)
v3.0: 1 GB/s (8 Gb/s)

I'm fairly sure that's each way, too.
I see. So do all PCI-E slots share that 1GB/s bandwidth? Or is it per slot?
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post #65 of 81
Quote:
Originally Posted by steelbom View Post
I see. So do all PCI-E slots share that 1GB/s bandwidth? Or is it per slot?
That's per lane, so 1GB/s for 1x, 16GB/s for 16x, etc.
    
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post #66 of 81
Quote:
Originally Posted by Brutuz View Post
That's per lane, so 1GB/s for 1x, 16GB/s for 16x, etc.
I see... what does this affect exactly though? The GTX 580 has a memory bandwidth of around 200GB/s so I imagine the two aren't related.

I'm trying to figure out and understand what this improves exactly, or what it's related to. Is PCI-E 2.x currently bottlenecked? Does this improve existing cards? Allow improvements to be made in future cards? etc.
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post #67 of 81
Quote:
Originally Posted by Brutuz View Post
That's per lane, so 1GB/s for 1x, 16GB/s for 16x, etc.
Then....PCI-E 3.0= PCIE X32 32GB/s?
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post #68 of 81
Quote:
Originally Posted by Heavy MG View Post
Then....PCI-E 3.0= PCIE X32 32GB/s?
I don't think so. I think PCI-E 2 x16 = 8GB/s, PCI-E 3 x16 = 16GB/s
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post #69 of 81
Quote:
Originally Posted by steelbom View Post
I see... what does this affect exactly though? The GTX 580 has a memory bandwidth of around 200GB/s so I imagine the two aren't related.

I'm trying to figure out and understand what this improves exactly, or what it's related to. Is PCI-E 2.x currently bottlenecked? Does this improve existing cards? Allow improvements to be made in future cards? etc.
Memory bandwidth is different, that's only from the GDDR5 RAM to the GPU.

Only the HD6990 and GTX 590 would be limited in any dramatic fashion from an PCIe 2.1 8x slot, most of the improvement will come to smaller devices. (eg. USB3 PCIe cards, RAID cards, etc)
    
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post #70 of 81
Quote:
Originally Posted by Brutuz View Post
Memory bandwidth is different, that's only from the GDDR5 RAM to the GPU.

Only the HD6990 and GTX 590 would be limited in any dramatic fashion from an PCIe 2.1 8x slot, most of the improvement will come to smaller devices. (eg. USB3 PCIe cards, RAID cards, etc)
Ah, I see. Thanks!
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