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PCI Express 4.0 Will Deliver 75 Watt over PCIe not 300W
Last week some news hit the web that detailed specification of the new PCI-Express Gen 4.0 standard that is being developed. It was indicated that the motherboard slot would be capable of delivering 300 Watts through the PCI-Express slot, this is erroneous as it will remain to be 75 Watt, much like it is these days.
The info was shared to tomshardware, who accidentally got it wrong in their assumptions and findings. The PCI Express group contacted them and shared the info that the guys probably retrieved and thus explained wrong information. The 300 Watts is intended for the certification process but the maximum slot power will remain to be 75 Watts:
Update, 8/24/16, 2:06pm PT:PCI-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.
So there you go, graphics cards will still get external power connectors.
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umeng2002
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#5326155 Posted on: 08/25/2016 12:00 PM
Shocking!
Shocking!
dj_aris
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#5326158 Posted on: 08/25/2016 12:06 PM
Would be nice to bump it to 100W, GPUs are getting less and less demanding.
What would be even nicer (and easier) though is to solder connectors in a different location on the GPU boards. Right now they all have them in a rough spot if you care about a clean build. Even if you route cables for miles you still have to plug cables around the middle of your system, that is always bad aesthetically imho. Maybe mobos could even have a small hole at the end of the PCIEx16 slots to route aux cables behind the board?
Would be nice to bump it to 100W, GPUs are getting less and less demanding.
What would be even nicer (and easier) though is to solder connectors in a different location on the GPU boards. Right now they all have them in a rough spot if you care about a clean build. Even if you route cables for miles you still have to plug cables around the middle of your system, that is always bad aesthetically imho. Maybe mobos could even have a small hole at the end of the PCIEx16 slots to route aux cables behind the board?
MainFrame Alpha
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#5326169 Posted on: 08/25/2016 12:27 PM
Thank you for correcting that info Hilbert although an increase in pci-e is welcomed, oh and thanks for the bread crupms..that lightning looks good
Thank you for correcting that info Hilbert although an increase in pci-e is welcomed, oh and thanks for the bread crupms..that lightning looks good
Cave Waverider
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#5326174 Posted on: 08/25/2016 12:39 PM
Would be nice to bump it to 100W, GPUs are getting less and less demanding.
What would be even nicer (and easier) though is to solder connectors in a different location on the GPU boards. Right now they all have them in a rough spot if you care about a clean build. Even if you route cables for miles you still have to plug cables around the middle of your system, that is always bad aesthetically imho. Maybe mobos could even have a small hole at the end of the PCIEx16 slots to route aux cables behind the board?Yes. Having the connectors where they are right now might be handy for accessibility without having to remove the card, but having to route the cables away from the back wall and around the card isn't nice for airflow or aesthetics for sure.
Would be nice to bump it to 100W, GPUs are getting less and less demanding.
What would be even nicer (and easier) though is to solder connectors in a different location on the GPU boards. Right now they all have them in a rough spot if you care about a clean build. Even if you route cables for miles you still have to plug cables around the middle of your system, that is always bad aesthetically imho. Maybe mobos could even have a small hole at the end of the PCIEx16 slots to route aux cables behind the board?Yes. Having the connectors where they are right now might be handy for accessibility without having to remove the card, but having to route the cables away from the back wall and around the card isn't nice for airflow or aesthetics for sure.
vbetts
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#5326176 Posted on: 08/25/2016 12:41 PM
Koniakki
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#5326190 Posted on: 08/25/2016 12:55 PM
That's the GTX 980Ti Lightning.
Thank you for correcting that info Hilbert although an increase in pci-e is welcomed, oh and thanks for the bread crupms..that lightning looks good
That's the GTX 980Ti Lightning.
Qwinn
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#5326199 Posted on: 08/25/2016 01:07 PM
Hmmm. If that's the case, not seeing any real point to the new spec at all then. It's not like PCIe 3.0 is ever a bottleneck now. Well, at least not for video cards. Maybe it could help NVME drives. That's all I can think of.
Hmmm. If that's the case, not seeing any real point to the new spec at all then. It's not like PCIe 3.0 is ever a bottleneck now. Well, at least not for video cards. Maybe it could help NVME drives. That's all I can think of.
MainFrame Alpha
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#5326222 Posted on: 08/25/2016 01:59 PM
Thank you for clearing that one
That's the GTX 980Ti Lightning.
Thank you for clearing that one
Koniakki
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#5326223 Posted on: 08/25/2016 02:02 PM
I just pointed it before anyone thinks otherwise.
That could escalated real quick in the interweb.
Thank you for clearing that one
I just pointed it before anyone thinks otherwise.
That could escalated real quick in the interweb.
Kaarme
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#5326277 Posted on: 08/25/2016 03:49 PM
What're "supplemental power connectors" supposed to be? Surely it's not referring to the power coming from the PSU directly? There's no reason why that couldn't be 2MW if somebody wanted a laser cannon inside their computer case. Neither the mobo nor the PCIe would know nothing of it. Yet it seems strange the mobo would have another power connector somehow connected to the video card if needed, but I guess it's not impossible, just not overly compatible with older mobos.
What're "supplemental power connectors" supposed to be? Surely it's not referring to the power coming from the PSU directly? There's no reason why that couldn't be 2MW if somebody wanted a laser cannon inside their computer case. Neither the mobo nor the PCIe would know nothing of it. Yet it seems strange the mobo would have another power connector somehow connected to the video card if needed, but I guess it's not impossible, just not overly compatible with older mobos.
Evildead666
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#5326279 Posted on: 08/25/2016 03:58 PM
Yaaaaaaaaaaaaaaaaay
Thanks for clearing that one up Hilbert.
The Internet was starting to go all loony....
Yaaaaaaaaaaaaaaaaay
Thanks for clearing that one up Hilbert.
The Internet was starting to go all loony....
Hilbert Hagedoorn
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#5326285 Posted on: 08/25/2016 04:13 PM
Yeah, sorry I didn't mean to confuse. It has three 8-pin power connectors hence I used it in the news-item as reference material. That was not a mysterious 'future' lightning or anything.
That's the GTX 980Ti Lightning.
Yeah, sorry I didn't mean to confuse. It has three 8-pin power connectors hence I used it in the news-item as reference material. That was not a mysterious 'future' lightning or anything.
CPC_RedDawn
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#5326291 Posted on: 08/25/2016 04:49 PM
Makes no sense to increase the power through the PCIE connector.
This would take graphics cards backwards.
Nvidia, AMD, and even Intel have made strides towards lower power more efficient GPU's for years now and with the likes of the 750Ti and the 950 not even needing a power connector but still being powerful enough to run games decently is a massive thing.
Remember the days when someone would ask you "I want to upgrade PC's graphics, I brought the PC off the shelf from a supermarket"
and you go.... "oh dear lord, your gonna need a new PSU first" and they look at you like you just told them the Illuminati was real.
Makes no sense to increase the power through the PCIE connector.
This would take graphics cards backwards.
Nvidia, AMD, and even Intel have made strides towards lower power more efficient GPU's for years now and with the likes of the 750Ti and the 950 not even needing a power connector but still being powerful enough to run games decently is a massive thing.
Remember the days when someone would ask you "I want to upgrade PC's graphics, I brought the PC off the shelf from a supermarket"
and you go.... "oh dear lord, your gonna need a new PSU first" and they look at you like you just told them the Illuminati was real.
Hootmon
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#5326292 Posted on: 08/25/2016 04:49 PM
What're "supplemental power connectors" supposed to be? Surely it's not referring to the power coming from the PSU directly? There's no reason why that couldn't be 2MW if somebody wanted a laser cannon inside their computer case.
Home-built rig with fricken "laser" beams.
Click here to post a comment for this news story on the message forum.
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I was wondering when I saw the news on the web, how will a PCIE slot deliver so much power ?! I turns out that it can't deliver 300 W, lol