And I need a little advice about power supplies.

Now, I'm buying this MOBO:http://www.newegg.com/Product/Product.aspx?Item=N82E16813128372

Which requires a 24-pin 12V power supply.

I'm also getting this Video card:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814102822

Which will require about 550W power supply with a PCI-E 6 pin power plug.

I was thinking of going with this PSU:http://www.newegg.com/Product/Product.aspx?Item=N82E16817182017

But it's just a tad pricey. I'm trying to keep the price of the total system under $550 dollars, but the only PSU's I can find on newegg are really expensive in comparison to some other sites.

I found this one on computer geeks:http://www.geeks.com/details.asp?invtid=ESTAR680XGD&cpc=SCH

Which seems to be cheaper and supply me with more than enough power, also.

What would be the downside to using the cheaper PSU from geeks? Is it 100% comaptible with the MOBO I'm buying?

100% compatible? should be good to go. The mobo is a 24 pin atx which the power supply does have(20+4 atx).

Though I only took a brief look at this power supply without any research. I would suggest looking up some reviews and such cause that is a hella cheap power supply for what it is delivering. Though it also helps that it isn't a brand I have ever heard of.

You could get away with using a smaller power supply (ignore the advice on their website; that's far too high). The max power of the graphics card is 110W and it will actually use much less than that under full load, and I assume your CPU has a TDP under 125W. That's 235W, and those are the most power-hungry components in a PC. The rest put together won't take 50W so total 280W worst-case-scenario. You could get a 400W PSU and still have a huge margin.

EDIT: Here's a typical PC with a 4830:

http://www.techreport.com/articles.x/15752/8

Worst-case system power was 208W for everything. That was with a 130W TDP CPU, which is crazy. So you'll use much less than that. A400W PSU would be more than enough.

EDIT2: Forgot about PSU efficiency. Most are only about 80% efficient. Changed my recommendation to a 400W one, though in the typical 208W case it's still overkill. Buy a PSU with the 80%+ rated certification.

@soleron very true didn't even looking at what vid card domo was looking at. Never hurts to have extra power though

BUT WE NEED POWER RAWR

Yeah, the video card was my main hangup, because the CPU is going to be using 65w according to newegg, and the vid card 450, and I know I need to go a little bit over what the power requirements are, just for the sake of performance.

I decided to go with the Rosewill if my requirements are actually much lower than what I had stated above, in case I decide to do any overclocking.

Those Pentium Exxxx Dual Core CPU's overclock like champs, and I got a buddy who swares by it, so we'll see what happens.

Anyhow, thank you for the replies.

You mean 110, right?

No, I mean 450 according to Newegg, which is why I was confused.

Newegg states, and I quote "System Requirements:450 Watt or greater power supply recommended (550 Watt and two 6-pin connectors for ATI CrossFireX technology in dual mode)"

Not saying this is accurate, but that's what I was basing my calculations off of. I just assumed Newegg knew what they were talking about.

Newegg overestimate considerably because they assume you have a rubish PSU with poor efficiency and worst-case-scenario on the other components. Taking into account your CPU, your system will typically use about 180W under load. So, even with overclocking and a safety margin then a 350W PSU would be fine as long as it's a good make.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817153023

Heres a thermaltake 430W with 4 eggs @ $28 after MIR with free shipping, there are a couple of cheaper Coolmax ones but im not sure how good they are.

you can do better with the graphics card (HD4870 GPU / E5200 CPU), assuming this is primarily for gaming, for about $500.


http://www.maximumpc.com/article/features/build_a_500_pc_play_crysis_40fps