550W enough for a single 4890? - Overclock.net

Apocolypze01 · 2 Weeks Ago

Hey all,

I have a 550W generic PSU. It has powered my 8800GT for over a year now with no hickups.

Im wondering if it will be able to power up one HD 4890. It doesnt have any PCI Express power connectors, so i intend to use both the 'single molex-to-pcie' adapters that come with the HD 4890.

It has a mere 17A on the 12V rail.

The other contents are relatively small in my computer. Only one HDD - 160GB, an AMD Athlon X2 4200+, rated at 65W, but the overclocked makes it an estimated 82W. A small, micro atx motherboard and that about it.

I wish for the power supply to last about a month, that way i will have my new corsair TX 850/750.

Thanks

exad · 2 Weeks Ago

Quote:

Originally Posted by Apocolypze01

Hey all,

I have a 550W generic PSU. It has powered my 8800GT for over a year now with no hickups.

Im wondering if it will be able to power up one HD 4890. It doesnt have any PCI Express power connectors, so i intend to use both the 'single molex-to-pcie' adapters that come with the HD 4890.

It has a mere 17A on the 12V rail.

The other contents are relatively small in my computer. Only one HDD - 160GB, an AMD Athlon X2 4200+, rated at 65W, but the overclocked makes it an estimated 82W. A small, micro atx motherboard and that about it.

I wish for the power supply to last about a month, that way i will have my new corsair TX 850/750.

Thanks

It should be able to handle it but with a generic PSU why risk it for 1 month?

TwoCables · 2 Weeks Ago

Quote:

Originally Posted by exad

It should be able to handle it but with a generic PSU why risk it for 1 month?

I agree. And since I am an overclocker, I wouldn't risk it even for 5 minutes.

videoman5 · 2 Weeks Ago

Yes, your whole system will only draw 400W, and that's at full load too. Even if your PSU is overrated, it's most likely not 150W overrated.

Edit: WDF? 17A on the 12v rail? Get that changed pronto!

r31ncarnat3d · 2 Weeks Ago

Quote:

Originally Posted by Apocolypze01

Hey all,

I have a 550W generic PSU. It has powered my 8800GT for over a year now with no hickups.

Im wondering if it will be able to power up one HD 4890. It doesnt have any PCI Express power connectors, so i intend to use both the 'single molex-to-pcie' adapters that come with the HD 4890.

It has a mere 17A on the 12V rail.

The other contents are relatively small in my computer. Only one HDD - 160GB, an AMD Athlon X2 4200+, rated at 65W, but the overclocked makes it an estimated 82W. A small, micro atx motherboard and that about it.

I wish for the power supply to last about a month, that way i will have my new corsair TX 850/750.

Thanks

I'd wait until your TX comes in (although a VX550 will be enough power); that low amperage seems too underpowered, and the fact that it's a generic PSU makes me nervous.

man03999 · 2 Weeks Ago

Theres alot of decent PSU out there for cheap you should pick up one so you won't regret it when your generic PSU fail and bring your other hardware with.

Apocolypze01 · 2 Weeks Ago

whats the worst that could happen?

_02 · 2 Weeks Ago

You could have a cheap PSU that doesn't output what it advertises and you could under power your system, causing damage to multiple components.

Brutuz · 2 Weeks Ago

My 550 handles a HD4890, OCed Quad Core, crapload of fans + HDDs, etc, I think you'll be fine, but if the PSU isn't enough/it dies, you'll kill a lot of components.