Do I really need that power?

[Itachi_Uchiha]

A RX 5700 recommends 600 w psu's. Do i really need that?

[Perrin]

Depends on what your other hardware is, you don't need 600 watts to power an RX 5700 however you might need it for the GPU and everything else. You should probably go for it anyway because it'll give you some extra room if you upgrade stuff later down the line.

[Itachi_Uchiha]

Just now, Perrin said:

Depends on what your other hardware is, you don't need 600 watts to power an RX 5700 however you might need it for the GPU and everything else. You should probably go for it anyway because it'll give you some extra room if you upgrade stuff later down the line.

ok

[LOST TALE]

1 hour ago, Itachi_Uchiha said:

ok

PSUs lose power overtime, so the most efficient purchase is buying more than you need now. How much more I don't know.

 

The default power limit on cards appears to be lower than the max you can set. So you can generally run it at like 40% less wattage with a 10% drop in performance.

 

The biggest problem however is the sudden spikes in wattage. For example if I can pull 250w on one gpu 24/7 no problem. but I couldn't pull 80w with two GPUs, (I tried a with 1060s and rx 580s) probably because they have a spike in power draw. The single GPU works fine the same with both 8 pin connector connections, so it's not that two of them were bad.

 

With that said you should be safe with even 450w if you don't have a baller cpu.

Could be safe as low as 400w. or even 300W. I'm not sure if the PSU power is the input from the wall or the DC output after the efficiency coeficient. Motherbaords can use as much as 60w. Motherbaord power consumption should become a consumer focus.

[BTGbullseye]

3 hours ago, Itachi_Uchiha said:

A RX 5700 recommends 600 w psu's. Do i really need that?

As a reference, the system in my signature, with all peripherals, under synthetic max load power draw, while overclocked as high as it'll go without crashing, still only peaks at 460w at the wall... A 5700 uses less power, so as long as you're not running a 9900K at 5.2GHz or something absurd, you should be fine with a high quality 500w. Make sure you're getting something from Tier B or higher from the PSU Tier List.