Which psu is better?

[kangdemon]

I'm building a new pc soon and I'm having trouble deciding which power supply is better between these 2. I'm leaning towards the 620M version because everybody says the internal parts are made by seasonic while the 750w version is made by delta. What are your opinions?

http://www.frys.com/product/6993177

http://www.frys.com/product/6708445?site=sr:SEARCH:MAIN_RSLT_PG

If it matters, I'm going to put in an i5-3570k, 5 fans, and a gtx670 for the gpu. Also, I am planning on doing MASSIVE overclocking. I heard that the 620w will be enough but I'm not entirely sure.

 

[manofchalk]

The 620W, you don't need the 750W for a single card rig.

 

[excella1221]

^+1.

Also, I heard frys likes reselling returned and refurbished items without notifying the buyer as such.

 

[amuffin]

^^

They are all labeled and are usually discounted.

 

[photonboy]

Either one.

However...
Be aware that FAN NOISE in a Power Supply is usually constant until about 50% load then ramps up. With a large CPU overclock it's likely that under load you'll cross over 50% for the 620W.

Therefore there's a chance that the 750W would be quieter under load. The price difference is small so I recommend the 750W.

*i5-3570K
In case you didn't know, the average upper STABLE limit for overclocking this CPU is about 4.6GHz (with a good heatsink and motherboard).

Also, when it comes to gaming the overclock will rarely benefit you with the GTX670. It's pointless in general if:
a) you already get 60FPS (you'll want to synch to 60FPS probably, likely with Adaptive VSYNC)

b) the game is more limited by the GPU (most games)

Just FYI. I have the i7-3770K which can auto TURBO up to 3.9GHz which as the DEFAULT also gives me the advantage of the best power managment settings so my PC runs cooler. I've seen no real need to overclock in any game.