ATI Radeon HD 5450 on a 300 Watt PSU

Hey Guys

I bought myself a a graphics card which is an ATI Radeon HD 5450.

The problem is it's got a a 350 watt minimum requirement on the box and i only have a 300 watt PSU

What will happen if i install the graphics card in my PC with only a 300 watt PSU

The PSU is made by Bestec and i'm running this in an HP-T775.UK

Thanks for all answers

You should look at 12V Amps, but that card is very low power (50 W max) so unless you have much stuff or that PSU is very old it may be fine.

Ahh I think the PSU is quite old as well as having a lot of stuff. I got the processor, 3X1 GB modules as well as the 7200RPM SATA HDD and all 4 of my PCI cards are taken up with WIfi with other bits though I will have to swap the GPU around as the current one is a Radeon X550 which will be replaced for the Radeon HD 5450

So I decided to try it and I have not played game with it yet but with all the other hardware it seems to be working fine on the 300 W PSU

If you start to see some lagging and sluggishness or monitor flickering on and off then you will know. My advice would be to get a new PSU and soon, there is a chance of causing some damage to GPU, CPU and the rest of the system, not likely but possible. I wouldn't want to take that chance.

robc133 said:

Ahh I think the PSU is quite old as well as having a lot of stuff. I got the processor, 3X1 GB modules as well as the 7200RPM SATA HDD and all 4 of my PCI cards are taken up with WIfi with other bits though I will have to swap the GPU around as the current one is a Radeon X550 which will be replaced for the Radeon HD 5450

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Try with furmark or some demanding game, if you see artifacts, slowdowns, strange noise coming up from the PSU, or the computre shuts down, reboots, or freezes or bsods, then the PSU is overloaded and you should upgrade it to avoid damage to your computer components.