gtx 660 ti sli needed watts ?

[zergo1012]

I have a question:

Now I have a single gtx 660 ti and I want to buy another one a SLI them.

But I have a ocz600mxsp powersupply(it has 600 watt +80 gold)

My system specs

Intel i5 2500k

msi z77 gd-65

crosair h100i (two fans)

4 system fans 

1 7200rpm harddrive and a samsung 128gb 840 pro ssd.

 

 

[Bluejay0]

Like 550 Watts is needed for SLI. 660s are pretty low power so no need for such a big supply.

[Osmium]

What is your question? If you are asking if your system can support another 660ti the answer is yes unless you have some insane OC on that CPU.

[BCMods]

750w minimum, unless you want your PSU constantly running at 100%.

[Psychatog]

Assuming the 12V has access to the entire span of power we're looking at 50A.  Each GTX 660 TI at stock w/ no OC pulls 150w or 12.5A.  So 2 would be 25A, your CPU at a standard OC is about 145W so 12A.  That's 37A, and roughly 4-5A for the rest of the system.  That leaves 41-42A under 100% load, with 8-9A or 96-108W of spare power.  Which is PLENTY.

 

CPU calculation is 95W * (OC speed/stock speed)*(OC voltage/stock voltage)^2.  So 4.4/3.4 * 1.3/1.2^2 * 95 = 145W or 12A.

[zergo1012]

Thx this helpes a lot I think 

I think I am going to buy another card

[fishymamba]

Looking at your PSU, it does not have the required PCI-e connectors. You will need to use molex adapters to add another 660Ti.

[zergo1012]

I now @fishymamba and I have