Psu Requirement For Gpu Oc

[KIngAbdulla]

this is my fist topic started in any forum so please  take it easy on me if I make stupid mistakes while posting topic

 

I have a small 420W PSU which came installed in by GIGABYTE case.I just got my GTX 650 Ti SSC 2GB from EVGA

It has a minimum requiement of 400W

http://www.evga.com/Products/Product.aspx?pn=02G-P4-3653-KR

 

I checked out a review online for my card and the reviewer was able to achieve quite good results

http://www.techpowerup.com/reviews/EVGA/GTX_650_Ti_SSC/30.html

 

so with my PSU ahould I try to OC my card???

[Villain]

If the card is stable at the factory clocks, then perhaps you could try. I would advise trying to get the core/mem clock as high as possible without increasing the voltage. Just be sure to use a few stability tests (furmark, 3dmark etc.) to make sure you won't have any power issues. If your PC crashes, then you went too high.

[brownninja97]

considering i have a i7 2600 and a 6770 running on a 350w psu you should be fine and the 6770 is slightly overclocked

[mvitkun]

recommendations from the graphics card manufacturer are not minimum requirements despite what they say.

 

400 watts is the comfortable zone where you could OC it,add multiple HDD's,OC the cpu,add 4 more fans,add a fan control bay,etc.

 

http://www.techpowerup.com/reviews/EVGA/GTX_650_Ti_SSC/25.html

 

gtx 650 ti takes 94 watts maximum (during furmark) and 78 watts peak (highest draw during gameplay)

so lets go with 94 to be safe.

94 watts (gtx 650 ti)

95 watts (miscel. proc.)

20 watts (4 fans at .4a 12v)

10-15 watts (HDD)

10-15 watts (DVD drive)

 

thats 239 watts max (everything at max all at the same time).

but you have to consider that there will be .00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001%

(source)

chance that everything will be maxed at once.

no that doesn't mean the above isn't true,it just means the percentage may not be accurate,though it does accureatley represent how uncommon the event of everything maxing out at once would be

 

so yes it's perfectly safe for you to overclock both the cpu and the gpu.

[KIngAbdulla]

I just looked at the specifications sticker on my PSU and it says that 350W shall be the maximum output and looking at the estimates given I am really happy @mvitkun thank you for the reply

[KIngAbdulla]

and the example by @brownninja97 is quite encouraging as well

I will overclock my card now :)

[mvitkun]

I just looked at the specifications sticker on my PSU and it says that 350W shall be the maximum output and looking at the estimates given I am really happy @mvitkun thank you for the reply

thats also another reason that graphics manufacturers overrate the minimums,because psu's may not be able to output their full rating on the 12V rail.

[KIngAbdulla]

thats also another reason that graphics manufacturers overrate the minimums,because psu's may not be able to output their full rating on the 12V rail.

the output rating for my PSU's 12V rail is 336W which gives me a lot of headroom

and I have a stable OC currently on both the GPU and Memory Clock both increased by 65Mhz though I may be able to get more out of this card