PS for new build

Hey everyone,

I am sorry I was not able to read the FAQ because I am running a little late.

My questions is:

I will be building a new machine soon.

Intel E7400
Gigabyte GA-EP45-DS3L
4GB of G.Skill RAM (2x2GB)
MSI 9600GT 512M OC GeForce 512MB

Those are the main components. I was planning to buy the OCZ StealthXStream OCZ500SXS 500W, but I just saw this deal on newegg: RAIDMAX SMILODON Extreme Black Case with 500W powesupply

The power supply's specs are the following:

OUTPUT MIN LOAD MAX LOAD LOAD REG. LINE REG. RIPPLE
+3.3V 0.5A 28.0A ±5% ±1% 75mV
+5V 0.5A 38.0A ±5% ±1% 75mV
+12V 1A 22.0A ±5% ±1% 75mV
-12V 0A 0.8A ±10% ±2% 150mV
+5Vsb 0A 2.0A ±5% ±1% 75mV

Now I know that the 9600GT needs 26 Amps on the v rail. This one is showing 22.0 A. Does this directly mean that this power supply will not be able to perfectly power my machine?

In this case, would the OCZ StealthXStream OCZ500SXS 500W do the job with its +12V1@18A,
+12V2@18A?

I would really appreciate the help and some info about single vs dual rails.

Thanks
9 answers Last reply
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  1. Don't buy the raidmax case unless you like it. Raidmax is considered a low end power supply. Ocz is a little better. Look for other ps deals first. Newegg had a pc power and cooling 750w for only $69.99 after rebate recently. That's decent.
  2. DO NOT buy the raidmax PSU!!
    They are bottom of the barrel junk quality.
    Using one of their PSU's is just asking for trouble.
    The OCZ PSU is a fairly good unit (great for the price) and should work just fine for you
  3. look into OCZ's, Antec and Thermaltake around 500-620w
  4. That's what I thought the first time I saw the specs of the raidmax's PS. Only 22A on the 12V rail.

    Could you guyz tell me how the dual 12V rails on the OCZ with 18A on each will supply the 9600GT with at least 26 A? Could you please show me the math behind it so that I can apply each time I look into another PSU.

    Thanks
  5. The 9600GT doesn't need 26A, that is the recommendation for the total system. Your system will never get anywhere close to 20A, so a good quality 300W+ PSU would be plenty. The OCZ will be fine, but I'd recommend an Antec Earthwatts 380 or Seasonic S12II 380.
  6. I know the online power supply demand are not too accurate, but when i punch in my components, it gives me 380 Watts. I always take that as bare minimum. I do not think 380W would be enough for my machine. I mean, I do not want to fry the PSU in 3 weeks!

    Thanks for your opinion and info on the 9600GT though.
  7. An E7400 uses less than 50W, a 9600GT less than 100W, and the rest of your system is about 50W. You won't fry your PSU in 3 weeks.
  8. I bought the same case and the PSU that came with it died after a year. I knew this might happen so it wasn't a big deal. If you buy it, either buy a better PSU to replace it or just wait till it dies. :)
  9. My bad, I also forgot to mention that I will be overclocking.

    I'd rather be on the safe side with the 500W and not cheap out although Antec makes good PSUs.

    +, the OCZ 500W has a rebate on it now. It totals at 25$(80$ regular). Cheaper than the Antec Earthwatts 380.
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