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[TPU] ASUS Unveils World's First PCI-Express 3.0 Motherboard for AMD Processors

post #1 of 173
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Quote:
ASUS did the unthinkable yet simple, by innovating the first AMD platform motherboard that features PCI-Express 3.0 x16 slots, the Sabertooth 990FX/GEN3.0 R2.0. Long naming aside, the board provides you a couple of gen 3.0 slots by using PLX-made 48-lane PCI-Express Gen 3.0 bridge chip.

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post #2 of 173
what's the point if pci-e 3 has little to no difference in performance over pci-e 2?

e-peen?
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post #3 of 173
Whats the point when amd processors bottleneck 2 card setups?
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post #4 of 173
Quote:
Originally Posted by Master__Shake View Post

what's the point if pci-e 3 has little to no difference in performance over pci-e 2?

e-peen?

There is difference, multi gpu performance improvement, eyefinity/surround improvement, many people have proved PCIe 3.0 improves gaming.
But for most gamers who aren't graphics enthusiasts (like me) are flawlessly satisfied with PCIe 2.0.
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post #5 of 173
Quote:
Originally Posted by Master__Shake View Post

what's the point if pci-e 3 has little to no difference in performance over pci-e 2?

e-peen?

There is a huge difference.

Just because it makes no difference for a single card set-up doesn't mean it doesn't for 3-4 way GPU set-ups. Don't believe the rubbish review and benchmark sites spit out. If it didn't make a difference it wouldn't exist.
    
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post #6 of 173
Good God I hate Asus's colors on their Sabertooth crap.
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post #7 of 173
Quote:
Originally Posted by Stay Puft View Post

Whats the point when amd processors bottleneck 2 card setups?

Aww you just opened up the gates of hell....
post #8 of 173
I don't understand one thing. Any data from CPU to GPU and GPU to CPU goes through Hyper Transport bus connected between CPU and PCI express.
Hyper Transport 3.1 (3.2GHz) is still limited to 25.6 GB/s (bidirectional).
This means 12.8 GB/s CPU to GPU and vice versa (full duplex).

We know that a single PCIe 3.0 x16 slot supports 15.75 GB/s (each direction).
How can they bet there would still be no bottleneck over Hyper Transport ?
Currently there is no AMD CPU that supports full hyper transport bandwidth at default clocks.
Even if someone overclocks hyper transport bus to 3200 MHz in BIOS, his CPU will still be limited to communicate with GPU at a maximum transfer rate of 12.8 GB/s. << This is way lesser than what a single PCIe 3.0 x16 can deliver.
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post #9 of 173
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post #10 of 173
Quote:
Originally Posted by Master__Shake View Post

what's the point if pci-e 3 has little to no difference in performance over pci-e 2?

e-peen?
The point is PCIe 3.0 is best when using dual graphics cards in 2-way SLI, you get two PCIe 3.0 x8/x8 which is equal to two PCIe 2.0 x16/x16! If your motherboard is Gen 2, then your splitting PCIe 2.0 into x8/x8! I don't think we'll actual need the extra bandwidth PCIe 3.0 offers for a couple years at least, not accounting for 4-way SLI.
Edited by Systemlord - 1/9/13 at 9:02pm
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