News Corsair’s PSU Expert Jonny Guru Weighs in on Nvidia Connector-Gate

[dalauder]

TL;DR: I am sure there will be games where the 7900 XTX is only 10% slower than a 4090. I am equally sure there will be games where the 4090 is closer to double the performance...

Sorry, that was really long and if I read it, it was more than my pre-reviewed research on the 7900 GTX totals. I'd simply just seen it reported that it was only a 10% gap. That article wasn't very high quality, it appears. I was under the impression that the difference would be 5% to 30%, but tended to be closer to 10%.

In that case, NVidia really did push the power draw on the 4090 too high, since they'd already secured the performance crown by a ridiculous margin. Based on my experience with high clocks, I'd guess they could probably reduce performance by 5% to 10% and save 25% power.

 

[InvalidError]

USB-C power will only function when fully inserted

You should actually try it before saying it. All of my devices and cables work with the USB-C plug about 3/4 of the way in.

 

[-Fran-]

🤣

View: https://www.youtube.com/watch?v=mYXWmFKed0M


The gift that keeps on giving.

Regards.

 

[newtechldtech]

You should actually try it before saying it. All of my devices and cables work with the USB-C plug about 3/4 of the way in.

the Design of the USBC allows you to make sure it will work at certain length only. . I really think tat USBC power delivery is the best solution for GPU ... 3xUSBC can deliver 600 watts total wit ease (200 each) and for smaller cards just two or one USBC .. it is the way to go. IMO. easy clean tiny and will not have the problem of junk cheap power plugs.

 

[helper800]

the Design of the USBC allows you to make sure it will work at certain length only. . I really think tat USBC power delivery is the best solution for GPU ... 3xUSBC can deliver 600 watts total wit ease (200 each) and for smaller cards just two or one USBC .. it is the way to go. IMO. easy clean tiny and will not have the problem of junk cheap power plugs.

They will have to license the use of usb-c and I do not think the prospects of a 400-500 watt sustained load with those skinny cables will bode any better.

 

[Zurbo]

Something interesting I saw on a Reddit thread about this was for another user that supplied some very nice pictures of his connector.

As I see the female side of these connectors are being soldered I wondered if there would be evidence of TOO MUCH solder being used and flooding the inside of the barrels thus causing full insertion into the male connector on the video card to not be possible and his pictures certainly look to be showing just that.

In particular this thread - randomstranger454's comment

And these pictures showing what randomstranger454 describes as "clogged" pins.

• One pin is clogged with some kind of material.
• Whole view of the pins
• Side view of the connector
• View of the graphics connector
• a second pin clogged but way further in so not easily viewable.

When I looked over the data sheets for this connector it specified CRIMPED connections only for the barrels.
Not a single one said SOLDER these.

https://cdn.amphenol-cs.com/media/w...ardwiretoboard/bwb_minitek_pwr_cem_5_pcie.pdf

https://cdn.amphenol-cs.com/media/wysiwyg/files/documentation/gs-20-0704.pdf

 

[-Fran-]

View: https://www.youtube.com/watch?v=ig2px7ofKhQ


So having a dirty head causes burning. Heh.

Regards.

 

[newtechldtech]

They will have to license the use of usb-c and I do not think the prospects of a 400-500 watt sustained load with those skinny cables will bode any better.

for 200W each not 400-500 W each. that is for 600watts use 3 USBC power plugs ... actually it is very nice if they do it. lower than 200 watts cards will use single usbc ..

the USB PD Revision 3.1 specification is a major update to enable delivering up to 240W of power over full featured USB Type-C® cable and connector

source : https://www.usb.org/usb-charger-pd

 

[InvalidError]

for 200W each not 400-500 W each. that is for 600watts use 3 USBC power plugs ... actually it is very nice if they do it. lower than 200 watts cards will use single usbc ..

There is one massive problem with powering GPUs using USB-C: where do you get the 48V required to get there from? You'd need ATX PSUs with 48V USB outputs with a dedicated USB-PD channel for each plug. Massive cost overhead.

 

[helper800]

for 200W each not 400-500 W each. that is for 600watts use 3 USBC power plugs ... actually it is very nice if they do it. lower than 200 watts cards will use single usbc ..

the USB PD Revision 3.1 specification is a major update to enable delivering up to 240W of power over full featured USB Type-C® cable and connector

source : https://www.usb.org/usb-charger-pd

I never said 400-500w for a single cable, I said a I didn't think that those skinny cables can handle that load.

 

[newtechldtech]

I never said 400-500w for a single cable, I said a I didn't think that those skinny cables can handle that load.

The cables width follows the wattage .

 

[helper800]

The cables width follows the wattage .

And we all know now that doesn't mean it works, otherwise the 16-pin cables from Nvidia would be fine.

 

[InvalidError]

And we all know now that doesn't mean it works, otherwise the 16-pin cables from Nvidia would be fine.

And as far as current data is concerned, the CEM 5.0 HPWR cables are fine for the ~99.998% of people who plug it in correctly.

 

[helper800]

And as far as current data is concerned, the CEM 5.0 HPWR cables are fine for the ~99.998% of people who plug it in correctly.

Yep. Your point? Mine was that just because something theoretically works doesn't mean that it will.

 

[InvalidError]

Yep. Your point? Mine was that just because something theoretically works doesn't mean that it will.

The connector works in theory and it works in practice. Nothing unusual about a ~0.001% failure rate from material or manufacturing defects.

 

[helper800]

The connector works in theory and it works in practice. Nothing unusual about a ~0.001% failure rate from material or manufacturing defects.

Yep, unless your connector is so hard to insert due to manufacturing variance that some people believe it is plugged in when it is not fully inserted.