dedicated power supply?

About 5 months ago I upgraded to a rosewill 500w power supply nothing is wrong with it just I have decided to go sli with two bfg 9800gtx's and power supplies can get kinda pricy when your looking at 700w considering I just paid 50$ 4-5 months ago.

So I was looking and came across this http://www.newegg.com/Product/Prod [...] 6817101025

seems pretty interesting not sure how the work or how well they work. Or if it will even do the job.

Ill be using the two gpus a q6600 quad and 4 gigs of ram with a main of 500w. any suggestions.

You could do this and you should be ok. If you had a better power supply you could run it off 500 watt power supply.

I have a q6600 over clocked to 3.6ghz. 4gb ram, one optical Drive, 4 hard drives in raid 0 and a 3870 and with full load the most i have ever seen my system use is 280 watts. this is measuring it with a fan controler and also checking my self with a amp meter. but i would not try this with a Rosewell power supply maybe if you had one of the Tier 1 or Tier 2 power supplies.

http://www.xtremesystems.org/forum [...] p?t=108088 look at this and it will show you good power supplies.

The only drawback to the supply you posted the link to is that there is no connection to the motherboard so its either on all the time or you would have to switch it on before you turn on the system.

This one here does have a connection to your motherboard and will power on at the same time when you hit the power button on your case. I have used one of these in a crossfire system I built for a customer and it worked great. It's also cheaper then the one you posted the link to while also being more powerful.

http://www.newegg.com/Product/Prod [...] 6817153069

So the 750w would be sufficient enough for sli 9800gtx's, q6600 quad,4 gigs of memory two 3 sata drives? Just making sure because that psu has some excellent reviews. But I was told I would need 1000w plus for the two 9800's

you know actually im not sure if you would be cutting it close or not but if you are worried i would definitely consider this psu next its modular and 85%+ in efficiency
http://www.newegg.com/Product/Prod [...] 6817371009

You are better off not risking it, b/c as one person put it rosewill are a pretty low tier PSU, under a heavier load who knows what will happen, just buy yourself a good corsair PSU, or a PC power and cooling PSU, and you will be fine.