Is there something I don't get? Why would people want PCIe Gen 5? To my knowledge Gen 4's bandwidth is more than enough, isn't it? Gen 5 would only be adding to the cost of the card and motherboard.

Mpampis:

Is there something I don't get? Why would people want PCIe Gen 5? To my knowledge Gen 4's bandwidth is more than enough, isn't it? Gen 5 would only be adding to the cost of the card and motherboard.

I'd say probably because the X670 motherboards support PCI-e gen 5

seems like a mistake on amd's part not to be using their am5 pcie spec to qualify their rdna3 cards for pcie 5.

GPUs are not even close to saturate PCIe Gen4. Not even the 4090. This PCI3 Gen5 chips just help make motherboards more expensive for nothing.

Maddness:

I'd say probably because the X670 motherboards support PCI-e gen 5

Yes but PCIe lines aren't unlimited. Why not use them for SSDs or stuff that can properly utilize them? Also, MBs get upgraded less frequently than GPUs I think, so just let them have Gen 5 for your next upgrade.

Mpampis:

Is there something I don't get? Why would people want PCIe Gen 5? To my knowledge Gen 4's bandwidth is more than enough, isn't it? Gen 5 would only be adding to the cost of the card and motherboard.

You can actually run RTX4090 on PCIE 3.0 , PCIE 5.0 will be usless for gaming for another decade.

Horus-Anhur:

GPUs are not even close to saturate PCIe Gen4. Not even the 4090.

true, but that'll change.

Astyanax:

true, but that'll change.

By the time of the RTX 5000 series and RX 8000. Maybe.

"Up to 1.8X RT performance @2.505" didnt they say 50% in the presentation? Is it because it clock lower on average or the amount or it was 50% per CU, i cant remember and i m at work so i cant look it up

Mpampis:

Is there something I don't get? Why would people want PCIe Gen 5? To my knowledge Gen 4's bandwidth is more than enough, isn't it? Gen 5 would only be adding to the cost of the card and motherboard.

Because to some, if something isn't the highest number, it isn't the best. That's why you have people getting more than twice as much RAM as they will ever use, or 100MP camera sensors on their phones, or speakers that range from 20Hz to 120KHz.

Mpampis:

Yes but PCIe lines aren't unlimited. Why not use them for SSDs or stuff that can properly utilize them?

That to me is one of the things that bugs me about PCIe - we hardly need x16 slots anymore (especially for consumer-grade hardware) and with the tolerances of PCIe 4.0 and 5.0, it just makes things more expensive for no gain whatsoever. Once DirectStorage is implemented in GPUs, even x8 slots will be overkill. I would gladly downgrade a x16 slot to a x8 for more M.2, higher-bandwidth ethernet, and more expansion slots.

Astyanax:

true, but that'll change.

No, it won't. So long as you don't run out of VRAM, you hardly need any PCIe bandwidth at all. When it comes to storage, no home user is coming anywhere close to saturating a PCIe 4.0 M.2 drive in real-world applications. As I just mentioned, once DS is involved, you will need even less bandwidth for GPUs. For home use, PCIe 5.0 could very well be the fastest we will ever need. High-end workstations and servers will always need more, but the added cost and tolerances of these latest generations just doesn't yield any noteworthy benefit for home users.

Mpampis:

Is there something I don't get? Why would people want PCIe Gen 5? To my knowledge Gen 4's bandwidth is more than enough, isn't it? Gen 5 would only be adding to the cost of the card and motherboard.

Because then you can use less lanes, its not that it fills the PCIe4 bandwidth its the fact it would need x8 PCIe5 lanes to do what x16 does for PCIe4 This means you can have more for storage, expansions, network, sound cards etc etc in the system without worrying about any bottle neck that if you did the same and got x8 PCIe4 lanes could do (though chances are it would be a small 1-3% drop in most cases)