Is a 550w PSU enough for 6950 crossfire?

[krishan755]

Hiya,

I currently have the following build:

intel 3570k clocked to 4.2ghz with hyper 212
8gb corsair vengeance ram
3TB seagate HDD
60gb sata3 SSD
Zalman z11+
550w OCZ pro PSU
HD 6950 2GB overclocked to 6970.


I currently have another 6950 which is also overclocked to 6970, and i was wondering if a 550w would be safe with this.


Im 90% percent sure, it is not reccomended, but in a few months i shall be upgrading my PSU to possibly 750w+

but would it be safe for a few months?

Also, im sure the overclock to 6970 is definately a no no for 550w, and im prepared to use both 6950's at stock clocks


Any help is appreciated

 

[krishan755]

Sorry its not the OCZ psu, its an XFX 550w PSU.

 

[g-unit1111]

A single should be plenty efficient, a 550W might struggle with Crossfiring it.

 

[jnkweaver]

Sorry its not the OCZ psu, its an XFX 550w PSU.

LOL The OCZ no way but the XFX sure.

 

[spawnkiller]

my old 2X560ti was running on an 500w Antec NeoHE however it was rated 500w continous so that was a 6-700 peak watt capable psu... Try it and if it reboots, shut down or freeze, change the psu for a stronger...

It should be capable but if you we're planning 10 years, no as the closer the limit, the shorter the life of the psu... (plan to use about 50% of it to ensure the longest reliability and efficiency...)

PS: for info 2 560ti + a Q6600 @ 4.05ghz was pulling about 400watts at the wall when at very max load, but in gaming, it was more 250-300 all the time...