Do i need to connect up the 4th PCI E connectopr on the PSU to the 4 into 1 cable ?
All of the 4 x 8 pin connectors need to be filled else you're limiting it to 450w
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Do i need to connect up the 4th PCI E connectopr on the PSU to the 4 into 1 cable ?
Offt. No, the card is not getting the correct power from your psu, this should be 600w, plus. Sorry, I'm sure a member with more experience will help soon.
Ok so maybe here in lies the problem .All of the 4 x 8 pin connectors need to be filled else you're limiting it to 450w
Yes its 120HZ - Ok ill have a look and disable .Your monitor isn't 120Hz by any chance is it? You haven't got V-sync enabled for 3dmark?
They reuse model names. The release year matters. The 2023 and 2025 ones come with a 12vhpwr cable in the box. Its possible yours is a older model which neither came with that nor enough pcie cables as no gpu existed with such a power budget back then. You'd need to buy cables yourself from corsair. Either a native 2 8pin into 12vhpwr if it's compatible or buy another 8pin to 6+2 pin so you can use the included adapter.Ok so maybe here in lies the problem .
I had 3X PCI E connected up and have just tried the 4th , nothing would boot - disconnet the 4th and it boots back up .
New PSU or new PCI cables ? Its a
1000W Corsair RM1000e
I did check and most people said it would be fine ! https://forums.overclockers.co.uk/threads/1000w-corsair-rm1000e-is-it-enough-for-a-5090.19001296/
Was purchased Mid 2023 so probably the an earlier model . Your probably right though new PSU time , bum didnt dudget for that ? Any good value one come to mind ?They reuse model names. The release year matters. The 2023 and 2025 ones come with a 12vhpwr cable in the box. Its possible yours is a older model which neither came with that nor enough pcie cables as no gpu existed with such a power budget back then. You'd need to buy cables yourself from corsair. Either a native 2 8pin into 12vhpwr if it's compatible or buy another 8pin to 6+2 pin so you can use the included adapter.
A new psu wouldn't go amiss though as atx 3 (and 3.1)psus deal with the transient spikes better.
The right one in the first image looks like the 12vhpwr cable? Though it's a tad hard to see.
Was purchased Mid 2023 so probably the an earlier model . Your probably right though new PSU time , bum didnt dudget for that ? Any good value one come to mind ?
Out of interest i just dug these out , are they the ones ? What's a type 4 ?
And thats why you shouldt drink when the monster in law is over for Easter Sunday ! Sobered up and got it right - thanks ever so much .According to a review of your PSU here - https://www.kitguru.net/components/...rsair-rm1000e-2023-atx-3-0-psu-review-2023/2/
If that is indeed the same as yours, then it should come with 4 x 8pin (6+2) PCI-E cables - 2 of them with just 1 connector on, and 2 with dual PCI-E connectors.
If so, then use all 4 of those from your PSU to your converter that came with the GPU. The type 4 is the end that goes into the PSU in the PCIE/CPU connectors on the PSU itself
According to a review of your PSU here - https://www.kitguru.net/components/...rsair-rm1000e-2023-atx-3-0-psu-review-2023/2/
If that is indeed the same as yours, then it should come with 4 x 8pin (6+2) PCI-E cables - 2 of them with just 1 connector on, and 2 with dual PCI-E connectors.
If so, then use all 4 of those from your PSU to your converter that came with the GPU. The type 4 is the end that goes into the PSU in the PCIE/CPU connectors on the PSU itself
What's with everyone not using all available power cables?
With the 5090, the answer to every question is clearly 'more power', just keep plugging in cables until they stop going in![]()
Oh, better to use all 4? Would make sense. I think I used 3. Should probably have used all 4. My 5090 is easily pulling 550w though, so maybe it’s ok?
Definitely use all 4, it's meant to have all of them connected else you're not getting the full performance. Although 550w is a little high for the 3 cables (150w x 3) but the PCI-e slot can provide around 75w so that's nearly 550w
Just tried mine and it didn't boot , had to go back to 4x Pcie . It's an old PSU now so maybe times for a new one .That or the 12V that comes with the RM1000e (that I didn’t realise!). Apparently Corsair say it’s fine to use with the 5090.
If you have a Corsair PSU the 2 8pin into 6+2pin cables are rated for 300w from the PSU so you should be able to use 3 no problem.That or the 12V that comes with the RM1000e (that I didn’t realise!). Apparently Corsair say it’s fine to use with the 5090.
You might not have pushed it in all the way on the gpu side. The way the 12vhpwr cable is meant to work is it won't boot if it's not pushed in all the way, and they can be very stiff to insert.Just tried mine and it didn't boot , had to go back to 4x Pcie . It's an old PSU now so maybe times for a new one .
If you have a Corsair PSU the 2 8pin into 6+2pin cables are rated for 300w from the PSU so you should be able to use 3 no problem.