Kingwin Lazer 550W enough?

[majorawsome]

Well, as I was getting ready to purchase my items I was reviewing the compatiablity. I then remebered that I downgraded some of my parts to get a cheaper price, but I didn't think about the PSU so I upgraded(or downgraded) to the Kingwin Lazer 550W(I used to have a TX650W CORSAIR in my basket). The review on this PSU is very good, but I don't know if it will be enough to power my system.

Here is my list of components

Processor: i5 2500K SB 3.3 GHz 95W
Motherboard: ASUS P8Z77-V
Memory: G.SKILL Ripjaws X Series (2 * 4GB)
Graphics Card: ASUS HD7770 1GB GDDR5
Hard Drive: 2 7200 RPM 500 GB, 1 7200 RPM 1 TB
Case: Switch 810 (Includes 4 140mm fans and a fan hub(Molex)

PSU: Kingwin Lazer 550W (platnum efficiency)

I used the eXtreme Power Supply Calc. and got 338W, I will be upgrading to a 7870 and I got 425W. I WILL NOT BE OVERCLOCKING. If anyone can help me out that would be very appriciated!

 

[majorawsome]

Thanks for the graph! it helps! But, jw, If I had a crossfire 7870 I would have to upgrade my PSU? I will plan on crossfiring in about 2-3 years, after I get down on the computer building.

 

[majorawsome]

well, I actually already have all of my system planned out and it hits $1037, I got rid of that PSU and put in KINGWIN Absolute Platinum. The ONLY differences is that this is not modular, and that one is semi-modular, and it is $30 cheaper! (i have a place to store all of the cables, don't worry!) And I realized that I will probaly upgrade this PSU later for the crossfire.

 

[majorawsome]

That is a good idea! Thanks to everyone who helped! Cheers

 

[majorawsome]

Best answer selected by majorawsome.