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Optical PCIe 7.0 connection hits 128 GT/s

(www.tomshardware.com)
204 points WithinReason | 1 comments | 17 Jun 24 11:42 UTC | HN request time: 0s | source
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mistyvales ◴[18 Jun 24 00:21 UTC] No.40712753[source]▶
Here I am still on PCI-E 3.0...
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Arnavion ◴[18 Jun 24 00:24 UTC] No.40712764[source]▶
Most hardware (NVMe drives, GPUs, etc) doesn't run at more than 4.0 speeds anyway. The primary advantage of 5.0 and higher is that it'll allow that hardware to use fewer CPU lanes, eg what requires 4.0 x4 could use 6.0 x1.
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steelbrain ◴[18 Jun 24 05:16 UTC] No.40714274[source]▶
> eg what requires 4.0 x4 could use 6.0 x1

FWIW, this is only true for newer hardware. ie if you plugged in a pcie gen3x16 device into a pcie gen4x8 slot, although the bandwidth provided is in the same ballpark, the device will only run at pcie gen3x8.

So we'll need until the devices upgrade themselves to gen4 in this scenario to make use of higher bandwidth.

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1. KeplerBoy ◴[18 Jun 24 09:48 UTC] No.40715769[source]▶
It could still help connecting the chipset.

Not all pci-e lanes on your motherboard are created equal: Some are directly attached to the CPU others are connected to the chipset, which in turn is connected to the CPU.

It's possible to convert a single 5.0 x16 connection coming from the CPU to 2 4.0 x16 connections.