Underpowered Graphic Card

[jordengx]

hello, 

soon i will receive my new graphic card, but i forgot to buy a new PSU, the card rated at 500W recommended and my PSU is only 430W, my question is if it is ok to use gpu with underpowered PSU and if i can down-clock it to much my psu (for now).

thanks for the help

[TheGlenlivet]

7 minutes ago, jordengx said:

hello, 

soon i will receive my new graphic card, but i forgot to buy a new PSU, the card rated at 500W recommended and my PSU is only 430W, my question is if it is ok to use gpu with underpowered PSU and if i can down-clock it to much my psu (for now).

thanks for the help

No, I would not.  A 500W PSU is pretty inexpensive.  Time for an upgrade.

[jordengx]

what if i connect to the gpu cables from another psu? that will be ok?

[MedievalMatt]

3 minutes ago, jordengx said:

what if i connect to the gpu cables from another psu? that will be ok?

if the second PSU has enough juice for the card.  it would work.  you would need to devise a way to turn on both PSUs at the same time..... and thats super janky... just buy a beefier PSU.

[jordengx]

can i somehow down-clock the card?

[Abbysalknite]

48 minutes ago, jordengx said:

can i somehow down-clock the card?

Underclocking is a thing. If you are planning on doing that, it may be better to just buy a less power hungry graphics card.

[jordengx]

just temporary until i buy a new psu, how can i know how much i should underclock the card? 

[Abbysalknite]

On 9/28/2018 at 2:35 PM, jordengx said:

just temporary until i buy a new psu, how can i know how much i should underclock the card? 

I would start underclocking and lowering the power limits so that the card never exceeds your psu's capacity. I would also recommend running benchmarks and monitoring the stability. Just take things slowly.

[PlayStation 2]

What GPU and what PSU?

[jordengx]

msi 1080 (180w and recommended 500w) and the psu is evga 430w, i have core i5 7500