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Pcie 4.0 worth a new motherboard?
- Thread starter Wing-Man
- Start date
Nope. You will see zero difference.
Associate
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- 7 Feb 2014
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- 1,665
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- Lancashire
Not really. Better benefit for PCI 4.0 SSDs but down to personal preference whether its worth it for you or not.
I am running a 3080Ti on PCI-E 3.0 and it runs great.
I am running a 3080Ti on PCI-E 3.0 and it runs great.
You might have heard this about the 6500 XT, that card does need PCI-E 4.0, but the 6600 XT is mostly fine.
i dont understand what you mean? i asked is there is perfectam benafits from pcie 4.0, i know it works with 3.0 because its working.
I mean, with the 6500 XT there are huge performance benefits with pci-e 4.0 vs 3.0, but with a 6600 xt generally no, 3 is fine, except in a few cases.
Main reason is because the 6500 only uses 4 PCIe lanes while the 6600 uses 8. So for the 6500 since it uses so little lanes there's a good benefit jumping to PCIe 4.0, but for the 6600 8 lanes at 3.0 is enough.
I didn’t know that had reduced lanes, I do know 8 pcie lanes is all that’s need to run a gpu at full speed. I remember having this conversation when thinking of running my old 280x in cross fire
x8 still up to the job after all the years?
wiild the 6900 be ok at 3.0 x8?
x8 still up to the job after all the years?
wiild the 6900 be ok at 3.0 x8?
Soldato
- Joined
- 22 Nov 2018
- Posts
- 2,841
The 6900 has x16 lanes so it's okay on PCIe 3.0
mad this been done as a way to cap performance than? Or is there a different reason.
I know the 5xxx line up was all very close in performance and had to be bios capped on OC
Soldato
- Joined
- 22 Nov 2018
- Posts
- 2,841
Although AMD added support for resizeable bar on B450 motherboards which are PCIe 3.0
yes my motherboard as this option
Most likely "cost saving" reasons. But for the 6500, it's a laptop part that's been overclocked to fit for desktops, hence why it has so little lanes. Silicon shortage meant AMD couldn't dedicate a proper new die design for it and was easier to reuse an existing one.
I think its safe to say if you already have a B450 then theres no reason to change it for now , there might be a small improvement in minimums in games but at what overall cost to buy that. Thank you @CuriousTomCat , as the biggest advatage of a B550 over a B450 would be sam; just enable it in bios. What board do you have OP - pretty sure all B450 boards have a 16x slot ?