In my opinion I would not push it with the stock 350 watter you have.  You can go with a 500 watter linked below.

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16817153052

 

What size monitor do you have ?  Powerful cards like wider monitors to pump up the resolutions and games eye candy.  Smaller monitors and the cards power potential is going to waste.  Just something to think of.

---

@SR45 wrote:

In my opinion I would not push it with the stock 350 watter you have.  You can go with a 500 watter linked below.

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16817153052

 

What size monitor do you have ?  Powerful cards like wider monitors to pump up the resolutions and games eye candy.  Smaller monitors and the cards power potential is going to waste.  Just something to think of.

---

Just a kindly suggestion:

The Thermaltake 500w has 29amps, I believe your 350w has 28amps (correct me anyone if I'm wrong)

Purepower 500w W0100 ~29A

http://forums.guru3d.com/showthread.php?t=205763

 

Maybe look at something like this:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341001

GameXStream OCZ600GXSSLI ~44A

 

It's $25 more after rebate but you get 15 more amps for that 4850.

Good point kpo127 for the other p/s suggestion.  Saw some members upgrading to the one I suggested, so me thinks it was good for the video card.  :smileytongue:  But your suggestion is well thought out on this one. 

 

Thanks

I think the 4850 needs 500w with 30-32amps minimum.