HD 3650 on a 250w power supply?

pbcopter is spot on:

ATI Radeon™ HD 3600 Series System Requirements:

• PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
• 400 Watt or greater power supply (550 Watt for dual ATI CrossFireX™) recommended
• Certified power supplies are recommended
• 1GB of system memory recommended
• Installation software requires an optical drive
• DVD playback requires a DVD drive
• Blu-ray™ / HD DVD playback requires a Blu-ray / HD DVD drive
• For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 3600 series graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable is required

Cheers

Dave

While both guys above are correct, that is the recommended specs.

There is still some chance that it will run anyway. Fill the PC specs in this PSU calculator. It will tell you the power draw of the rig with that card installed when everything is at full throttle.

Then if you have a decent margin (the whole rig needs less than 210W), you should be able to do it.
At your own risk, of course.

Shut down your computer! Throw that power supply away! Now! Death of a Gutless Wonder II: The Best of the Bestec Review

Note that PSU is weak, and others advise you to replace it due to apparently suspect quality issues let alone the ability to provide the necessary juice, it's a red flag.

I will just drive the point home:

This is not a part that should NOT be ignored, it can trash the whole thing.

This doesn't match with the OP's own specs so I guess this is a 3rd party or older system you are trying to keep going, so yeah I would replace it, it's $50ish well spent and will allow for a much better video card.

Good your sorted and Glad to help. :)

Please mark the thread solved.

Cheers

Dave