Do i need to change the PSU for my upgrade to sli?

[dr_emad]

Guyz i'm having a bit of confusion about the Gigabyte Superp 720w 80+ PSU
I'm having no problems till now but i just installed the Gigabyte gtx 660ti oc graphic card in my system and i'm going for the 2nd one in Sli,the card is rated at 225w at full load with no overclock.Do i have to change the PSU for this system now or when i upgrade to Sli?
Specs:
Cpu: 2600k @ 4.2
Ram:Kingstone 1600 9,9,9,24
M.B:Gigabyte z68xp-ud3r
Cpu cooler: CM v10 wich may take 70w at full load for the TEC.
Drives OCZ aguility 3 60gb ssd,Sandisk sata 3 64gb SSD,2X WD Drives.
7 120mm system fans
my last question is that if i disconnected the Tec will the sli work??
my calculations 100 + 225 + 225 = 550w

 

[bmwbaxter]

you will be fine, I ran a 2600k @ 5.5 Ghz and 2 overclocked GTX 580's on a 750 Watt PSU. You will be fine

 

[dr_emad]

U've got me at " i ran a ..." that was quick and very helpfull,thanx man

 

[EarthDog]

The card is rated at 150W max at stock speeds... . With 20% power limit slider thats 180W each.

Im sure you would be fine with that cooler plugged in too.

 

[Bobnova]

Despite the name it's actually a 610w PSU with 504w 12v). Not an overly good one, either.
That said it should be able to handle those cards without a problem, they don't use much power.
I wouldn't try to do much OCing though.

A larger issue is that you only have two PCIe power connectors.

 

[dr_emad]

I think this psu must go.. no Overclocking!! thanx but Nooo

 

[Bobnova]

Easy way is to use Molex-PCIe converter cables. Or get a better PSU.

 

[dr_emad]

3 rails, it will be like 1 graphic card,2 WD drives,2 SSDs,DVD rom,TEC cooler and 7 fans on one rail!!
the other two is going for 2nd graphic card and Cpu
welll overclockers rocksss i've just learnd how to check the psu with a multimeter \m/