ROG Strix RTX® 4090 OC Edition Install Issues

[tonymax99]

Hi, I wonder if somebody could help

Im upgrading from an ASUS RTX 3060. It was a bit of a squeeze getting it in with a bit of fettling with the artic AIO CPU cooler but managed.

I have a Gigabyte UD1000GM PG5 1000W 80 PLUS Gold Modular ATX Power Supply, I only have 2 of the 4 power connectors to the GPU (I read that this should be enough, I cant see any more on the power supply), the GPU all lit up but my computer is not seeing the 4090, Ive installed the latest drivers from nvidia, cant update the gpu bios as its not seen,

not sure what else I can do so any help appreciated, It is seated correctly in the motherboard slot.

Motherboard is Asus TUF Gaming Z790-Plus WIFI (LGA 1700) DDR5 ATX Motherboard

thanks for anything

Tony

 

[Tetras]

I only have 2 of the 4 power connectors to the GPU (I read that this should be enough, I cant see any more on the power supply)

Can you clarify, do you mean that you are using 2x PCI-E cables which connect 4 connectors to the 4090 power adapter cable?

If you mean that you are only plugging in 2 of the 4 connectors, this is a problem.

Edit: doesn't your PSU have a 12/16 pin anyway? (which could be plugged in directly instead of using an adapter)

the GPU all lit up but my computer is not seeing the 4090, Ive installed the latest drivers from nvidia, cant update the gpu bios as its not seen,

How do you know this? You are using the integrated graphics?

If so, can you clarify exactly what happens when you plug the display cable into the 4090's display ports?

Have you tried both HDMI and DP (and more than one DP port, if they're mainly DP)?

 

[hyperseven]

That PSU should have 4xpcie connectors (6+2). Where did you read it could work with only 2 connected?

 

[tonymax99]

Hi, just what I read and watched on t'internet, I can Only see 3 pci power, they have 2 connectors on each cable di I need all 4?

thanks

 

[Tetras]

Hi, just what I read and watched on t'internet, I can Only see 3 pci power, they have 2 connectors on each cable di I need all 4?

I'm pretty sure your PSU has a native cable with a 12/16 pin present, so if I were you, I'd dump the adapter and this cable instead.

To answer your question, you should be fine with using 2 connectors per cable, but it is recommended to use independent cables wherever possible.

 

[tonymax99]

thanks everyone, all working, Tetras, you were right, this power supply has a dedicated12/16 power cable, I didn't realise it had, all seems fine now, few... I thought Id bricked it...