Does my psu has enough power?

vespida

Junior Member
Apr 9, 2014
1
0
0
Hi guys,

I just build a PC, and I'm not sure if my PSU 620watt is enough to power the system. Appreciate any kind advice.

Here are the specs;

Mobo: ASUS Z87 PRO
CPU: I5-4670K
RAM: 4X2 (8GB) KINGSTON HYPER X
HDD: 1TB WESTERN DIGITAL
SSD: CRUCIAL M500 (120GB)
GPU: SAPPHIRE R9 290 TRI-X 4GB
CASING: ENFORCER CM STORM
CPU COOLER: CM HYPER 212X
PSU: SEASONIC M12 BRONZE 620W

Thanks in advance!
 

lehtv

Elite Member
Dec 8, 2010
11,900
74
91
The 760W platinum is a nice unit but the money is mostly wasted on the OP's rig, unless the OP is planning to run 290 crossfire. But in that case I'd probably shoot for a 850W unit instead.
 

mindbomb

Senior member
May 30, 2013
363
0
0
It's actually possible that his PSU is not enough. Not because of the 620w, cause the system will probably tops out at 450w, but because of the multirail configuration. He has 2 24A 12v rails, and the 290 can possibly use more than 24A by itself.
 

lehtv

Elite Member
Dec 8, 2010
11,900
74
91
It's actually possible that his PSU is not enough. Not because of the 620w, cause the system will probably tops out at 450w, but because of the multirail configuration. He has 2 24A 12v rails, and the 290 can possibly use more than 24A by itself.

It's actually functionally single rail: http://www.hardocp.com/article/2010/05/18/seasonic_m12ii620_power_supply_review/2

The unit has ~93% of its DC output capacity available on the 12v rail (there is only one as there is no OCP set on the individual "rails") which is good for modern systems. This single 12v rail due to no OCP settings is similar to what we saw some time ago from the S12II 500W and really not that unusual for Seasonic units (why they continue to be labeled dual rail units though is unknown)

Even if it was a dual rail unit, 288W should arguably still work for powering an 8-pin and a 6-pin connector. The card would get some (up to 75W) of its power via the motherboard PCIe slot, and the motherboard would be powered from the other rail.

Also, his system will consume only about 350W while gaming: GPU = 250W, intel CPU + the rest = 100W at moderate load. Perhaps it could break 400W in stress testing both the CPU and GPU simultaneously.
 
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