Is my PSU enough to OC my rig?

[tommy4711]

Hey guys, so just wondering if my PSU is enough to give my CPU / GPU a DEC OC. (I'm very new to OCing).

Rig
PSU: Antec HCG 620W
GPU: MSI GTX 770 TF 4GB/OC
CPU: i5-4670k
MB: MSI Z87-GD65
RAM: 2x4gb Gskill.RipjawsX 2133mhz
HD: Seagate 2Tb
SSD: Samsung 128gb
Monitor: 1080p 60hz max. (this is what I'll be running games at)


As well as a nice cpu cooler, a couple fans that came with the case, a blu-ray drive, a couple usb slots etc.

So, would it be enough for a decent OC?

 

[Arnav01]

Yes ! I will surely do.But don't overdo it! I suggest you to get a decent XFX PSU to be on the safe side and it will help you to do overclocking better! http://www.amazon.com/XFX-ATX-550-Power-Supply/dp/B004RJ8EKI

 

[C12Friedman]

Unless your PSU is more than 5 years old, I don't see the need to swap out your PSU, it is of good design, reviewed here http://www.hardwareheaven.com/reviews/1163/pg8/antec-high-current-gamer-620w-power-supply-review-conclusion.html (linked to conclusion page). BTW, the OEM for both the 620W HCG and (all) XFX PSU's is SeaSonic. I'm not really seeing an advantage to swapping one SeaSonic model for another

 

[tommy4711]

Unless your PSU is more than 5 years old, I don't see the need to swap out your PSU, it is of good design, reviewed here http://www.hardwareheaven.com/reviews/1163/pg8/antec-high-current-gamer-620w-power-supply-review-conclusion.html (linked to conclusion page). BTW, the OEM for both the 620W HCG and (all) XFX PSU's is SeaSonic. I'm not really seeing an advantage to swapping one SeaSonic model for another

PSU is slightly over a month old, I can run games beautifully on max settings, I was more concerned about the 620W limit, I know that the GTX 770 takes up about 230 watts of power by itself, the i5-4670k another 85ish, plus all the other stuff I have, I was worried that 620W might not be enough to OC.

 

[Arnav01]

I agree , sorry I though you were going to buy a new one .You can overclock enough !

 

[C12Friedman]

Really the only time you'd pull 230W from that card is if overclocked and running stressing programs - I personally would consider running GTX 770's in SLI with that - note: I said "consider". Something that may amaze you (I intend to post some numbers in the future) might be your computer's actual power draw from the wall (a Kill-A-Watt meter is great for that). It and your actual system power usage is usually far below what you are thinking
Example: My 2500k @ 4.6 GHz, 4x4GB 1600MHz ram, HD7950 overclocked, D5 water pump, 8 fans (three of them UltraKazes) all running 100% draws ~310W from the wall. My 660XP PSU being platinum certified is 92% efficient at 50% load so my system is actually using a little under 300W everything at max.

 

[tommy4711]

Really the only time you'd pull 230W from that card is if overclocked and running stressing programs - I personally would consider running GTX 770's in SLI with that - note: I said "consider". Something that may amaze you (I intend to post some numbers in the future) might be your computer's actual power draw from the wall (a Kill-A-Watt meter is great for that). It and your actual system power usage is usually far below what you are thinking
Example: My 2500k @ 4.6 GHz, 4x4GB 1600MHz ram, HD7950 overclocked, D5 water pump, 8 fans (three of them UltraKazes) all running 100% draws ~310W from the wall. My 660XP PSU being platinum certified is 92% efficient at 50% load so my system is actually using a little under 300W everything at max.

In MSI afterburner I see the card occasionally dip up to 99%-100% GPU when I'm playing AC4 or Tomb raider, would that be equivalent to it using 230W?

 

[C12Friedman]

It might be but I would seriously doubt it, I'd estimate about 175-200 there. Because of different factors involved, there is no way to say for sure without personal measurement

 

[schmuckley]

Welp..only one way to find out! 😀

overclock both and if you get a black screen and reboot under gpu load..You need a bigger PSU.
hey..at least it has OCP

 

[Dark Lord of Tech]

I would go a little higher in the power dept.

 

[C12Friedman]

I would go a little higher in the power dept.

Why?