PCI Express 4.0 Brings 16 GT/s And At Least 300 Watts At The Slot (Update: Not Quite)

P4-630 · Aug 25, 2016

"by Chris Ramseyer August 24, 2016 at 5:21 PM
43COMMENTS
Update, 8/24/16, 2:06pm PTCI-SIG reached out to tell us that the power increase for PCI Express 4.0 will come from secondary connectors and not from the slot directly. They confirmed that we were initially told incorrect information. We have redacted a short passage from our original article that stated what were originally told, which is that the slot would provide at least 300W, and added clarification:

PCIe 3.0 max power capabilities: 75W from CEM + 225W from supplemental power connectors = 300W total
PCIe 4.0 max power capabilities: TBD

New value “P” = 75W from CEM + (P-75)W from supplemental power connectors."

http://www.tomshardware.com/news/pcie-4.0-power-speed-express,32525.html

FreedomEclipse · Aug 25, 2016

So we might need to plug in a molex from the PSU like in the early days.

Will more likely be another pci-e connector though

Mussels · Aug 25, 2016

so pretty much they made it faster again, and added external. power via external cables wont change.

Assimilator · Aug 25, 2016

@btarunr please update the original news piece with this info.

Bill_Bright · Aug 25, 2016

FreedomEclipse said:
So we might need to plug in a molex from the PSU like in the early days.

And I don't have a problem with that. PSUs (except low wattage) today have the necessary connectors. Forcing motherboard designers to build-in significantly greater current capabilities would only make motherboards more expensive for us consumers. It could also impact the goals for further motherboard miniaturization.

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PCI Express 4.0 Brings 16 GT/s And At Least 300 Watts At The Slot (Update: Not Quite)

P4-630

FreedomEclipse

~Technological Technocrat~

Mussels

Freshwater Moderator

Assimilator

Bill_Bright