Is my 650 watt enough for SLI 660 ti's?

Hardware Hub PSU
1

Hello, so I currently have 1 660 ti in my gaming rig right now, but I plan to buy another and do SLI, but I am wondering if I need to get a higher wattage PSU, my PSU right now is the Antec EarthWatts Green 650 watt, will that be enough for two 660 ti's? Or will I need to upgrade

2

Yes it will be fine. Each 660ti will take a little less than 150W

http://www.tomshardware.com/reviews/geforce-gtx-660-ti-memory-bandwidth-anti-aliasing,3283-14.html

Good thing your PSU was 80plus bronze (i had to check that one out)

What is your cpu? that may change my verdict if you have a pretty hefty one.

3

It's an i7 3770k

4

Is it overclocked? - how much-

And are your 660ti's OC'd?

I'm thinking of revising my statement if it is.

5

I think if you psu is 80 plus bronze or more it should be fine just do a moderate oc nothing crazy like 4.2ghz on the cpu and like 1000-1100mhz on the gpus what ever you can get without adding voltage woukd be good.

6

CPU isn't overclocked, and my 660 ti is OC'ed at 1050 mhz

7

ok and what power supply do you have?

 

8

 Antec EarthWatts Green 650 watt

It's 80plus bronze

Yea OP you're good! you're current PSU is just fine.

9

I guess I did not read closely enough ya I would go for it and also maybe think about overclocking your cpu a little to like 4.2 ghz or what ever is easy I am at 4.3 to give those 660ti's some room to flex their musle.