Buyers beware 5500 XT may be hamstrung by PCIe 3.0!

[Darajavahus]

We don't know all the details of the custom for iMac 5500 XT but the RX is PCIe 4.0 and is hamstrung by PCIe 3.0 a bit in some cases (iMac still PCIe 3.0) here some examples in games

PCI-E 3.0 vs. PCI-E 4.0: Was bringt PCI-Express 4.0 mit einer RX 5500 XT wirklich?

Welche Vorteile bietet PCI-Express 4.0 wirklich? PCGH hat eine RX 5500 XT getestet und die Ergebnisse sind beeindruckend!

www.pcgameshardware.de

but I don't know how it looks like in other cases like video editing, anyone has some insight?

 

[sco]

Seriously? I'd be more worried about 1 small fan cooling the whole iMac. If you care that much I suspect you're not buying an iMac.

 

[G4DPII]

A mid to low tier gpu is not going to reach the limits of PCI-E 3.0. Current hight end cards are only just starting to reach the limits.

 

[Patchwork]

I agree that even a Nvidia RTX 2080ti (the $1,200 card) only requires PCI-E 3.0, so agree that a mid to low tier GPU isn't really going to need PCI-E 4.0. It probably can run in a PCI-E 4.0 slot but you aren't going to see any gains as it won't be using the full bandwidth of PCI-E 3.0, so I'm not sure what the video is talking about. About the only thing that can utalise PCI-E 4.0 at the moment is some very fast SSD drives, though that may change with the next generation of graphics cards.

 

[pldelisle]

Lol.

Don't believe every YouTuber.

A GPU, for "normal" usage is far from being bottlenecked by PCI-Express 3.0.

We are advancing to PCI-E 4.0 because of Machine Learning boards and Big data. Ampere will be 4.0 because it is used to train models with a LOT of data. There's a LOT of data being sent over PCI-E bus. And storage benefits from 4.0 too.

For any normal usage (aka gaming) or video editing or anything like that, this bus isn't solicited to its full potential.

 

[kohlson]

I follow Max Yurev of YT, who regularly tests Macs with Resolve and FCPX. He's just ordered 2 iMacs to put through the paces. He expects them (low and high spec) to beat out his 2019 Mac Pro. I expect his review will be available in about a week.

 

[filmgirl]

Would it be nice to have PCI-e 4.0, sure (though in an iMac, we're not going to upgrade anyway so I’m not sure it really matters), but none of the current gen graphics cards take advantage of it — and even in storage, real world benefits are minor unless you’re talking about VERY expensive NVMEs — so I’m not seeing any reason to get upset. Plus, Intel doesn’t support it yet, so it’s moot.

 

[Darajavahus]

I follow Max Yurev of YT, who regularly tests Macs with Resolve and FCPX. He's just ordered 2 iMacs to put through the paces. He expects them (low and high spec) to beat out his 2019 Mac Pro. I expect his review will be available in about a week.

I know, I can't wait 🤤

 

[timerickson]

I follow Max Yurev of YT, who regularly tests Macs with Resolve and FCPX. He's just ordered 2 iMacs to put through the paces. He expects them (low and high spec) to beat out his 2019 Mac Pro. I expect his review will be available in about a week.

The model(s) he's waiting on don't arrive til the 18th or 19th, so we should hope to see a video late next week ideally.