Will an rx480 graphics card pull a 450w power supply?

Question

Video cards

Google says that the rx480 4gb video card should work with a 500w power supply, and I have a good 450w power supply. A consultant from a computer store says: "It's okay, the only thing is that the picture may freeze or the PC may turn off", but I won't strain the video card too much. I’ll just temporarily put it on this power supply, after I’ll buy it more powerful.

Answer 1

The consumption of the reference rx480 is 164W. Depending on the production and under overclocking, it can be a little more. Let's say your processor consumes 75W, and there are no additional consumers, such as five DVD writers turned on for recording at the same time, then 164 + 75 + memory and ssd ... 300 should be enough for you.
If the PSU is good, then there will most likely be no problems.
But in the long run, it's worth taking a PSU that not only covers your peak consumption, but with a margin of about twice the average calculated. To work with maximum efficiency, which means less useless heating and fan noise, and energy savings. At the same time, note that at 20% load, the efficiency will be LOWER than at 50% load, i.e. too much power reserve will even be harmful. It is advisable to look at the graphs for a specific PSU, they can differ significantly. There are online consumption calculators .

Answer 2

I once took rx480 to a 400W power supply ...
Everything worked - only in the room there was a pleasant smell of burnt insulation.
The video card (in games) is usually 100% loaded - this is how it should work.
But BP - on the contrary, it is better to take with a margin. Therefore, it is written there - 500W minimum.