I have always been scared of no name PSUs. I have seen far too many of these provide poor output, unsteady output, or just turn into smoke under high load. I really have to recommend a good PSU and my first choice for you is Corsair. EVGA makes good PSUs as well.

Can i use 8 pin to 2 molex pin adapter since i dont have 8 pin pcie connector on my psu.

The 770 requires a minimum of 42 amps on the +12v rail.
That Thermaltake PSU has two +12v rails, but each rail falls short of 42 amps.
So, you would have to use both +12v rails to power your 770.
You would then have to reference the wiring diagram to determine which PCI-e cable is on which +12v rail.
 
With that being said, I would recommend a PSU with a single +12v rail like this:
 
http://www.newegg.com/Pro...x?Item=N82E16817139012

The recommended 600W 42A 12V is the minimum recommended total system power requirement based on an average/mid-range PC configured with an Intel Core i7 3.2GHz processor, not just for the GTX 770 itself.
 
The GTX 770 card power draw is rated at 250W which is 21A @ 12V, of which 75W (6.25A @ 12V) can be supplied by the PCIe slot itself..An additional 75W (6.25A @ 12V) can be supplied by the 6-pin PCIe supplemental power connector and 150W (12.5A @ 12V) from the 8-pin PCIe supplemental power connector as long as the PSU is up to the task..The card could draw up to a combined 14.75A from the PCIe supplemental power connectors, and 6.25A from the PCIe slot which equals the 21A rating of the card.
 
Your generic PSU might get by using that adapter, but probably not, or probably not for long, I certainly wouldn't go for it..That Thermaltake unit should work fine with 30A on +12V1 and 22A on +12V2..There are better units..Corsair makes pretty good units, as well as EVGA like rjohnson11 said..I like single +12V rail units, but that's just personal preference, there's nothing wrong with multi-rail units.
 
Use this PSU calculator to get a fair idea of your total system wattage requirement.
 
Long story short = Get a good PSU.

I would order SeaSonic G-750 SSR-750RM in a weeks time. The eXtreme Power Supply Calculator Lite recommends me to get 501 watt minimum.
 
Until then can you help me with this Thermaltake Litepower 700W W0356 PSU setup:
http://www.thermaltake.com/products-model.aspx?id=C_00001776
 
There's one 6 pin and one 8 pin connector on the PSU for a straight forward connection . Should i worry about the two 12V rails and/or is there anything else to configure?
 
 

Thanks guys for all your support !
 
I will update this thread once i install the Thermaltake PSU tomorrow. I may need further help with switching off inbuilt gpu(HD 4600) or setup Lucid Virtu etc, i am absolute noob to these stuffs.

bob16314
The recommended 600W 42A 12V is the minimum recommended total system power requirement based on an average/mid-range PC configured with an Intel Core i7 3.2GHz processor, not just for the GTX 770 itself.
 
The GTX 770 card power draw is rated at 250W which is 21A @ 12V, of which 75W (6.25A @ 12V) can be supplied by the PCIe slot itself..An additional 75W (6.25A @ 12V) can be supplied by the 6-pin PCIe supplemental power connector and 150W (12.5A @ 12V) from the 8-pin PCIe supplemental power connector as long as the PSU is up to the task..The card could draw up to a combined 14.75A from the PCIe supplemental power connectors, and 6.25A from the PCIe slot which equals the 21A rating of the card.
 
Your generic PSU might get by using that adapter, but probably not, or probably not for long, I certainly wouldn't go for it..That Thermaltake unit should work fine with 30A on +12V1 and 22A on +12V2..There are better units..Corsair makes pretty good units, as well as EVGA like rjohnson11 said..I like single +12V rail units, but that's just personal preference, there's nothing wrong with multi-rail units.
 
Use this PSU calculator to get a fair idea of your total system wattage requirement.
 
Long story short = Get a good PSU.

 
Excellent explanation of how the PSU works to provide power to our cards.  Thank you.