psu help guide!!!

[sasrob]

heres a cool web site that helps you out with picking the right psu...


http://web.aanet.com.au/~SnooP/psucalc.php.

[Áedán]

It reckons my system needs a 170W PSU.

[PorPorMe]

My rig needs a 391w PSU. Where do I get that?

[Daniel ~]

Cut a 800 in half! Send me the other half!!

[PorPorMe]

C.o.d?

[MUff1N]

I haven't found one of these calculators that are even close to being what's really needed & always under powers what is needed for a system!
The last one I checked out was the Coolermaster PSU Wattage Calculator. (Much fancier UI than the other one has)
This one says all I need is a 400w PSU...

For my system is says all I need is 341w.
This is less than ½ of the PSU I currently have installed which is a Thermaltake Tough Power 750w.

What was supposed to come with this system was a 650w PSU but I wanted the extra cushion for graphics card upgrade or whatever else that would have more of a power draw so it would be covered.

[PorPorMe]

While not knowing a lot-I've learned that wattage as the factor for a PSU wattage is a joke until you deal with quality mfg's. The best way to find out what is good is to ask. ccp, or others that do know, will answer.

ssrob: You haven't been listening-ask here for what you need and you will get recomendations-I've given you one-for quality PSU's. If you keep trying to find a cheap PSU-it's probly what you'll get.

[cloasters]

It always feels good to set sail upon the sea of PC's with an expensive and comfortably large power supply. Snoot factor essential. Me so bad!

[PorPorMe]

Setting sail be good! Wind be bad, no good!

[Áedán]

Originally Posted by PorPorMe

While not knowing a lot-I've learned that wattage as the factor for a PSU wattage is a joke until you deal with quality mfg's.

Case in point for this one...

I had a cheapo power supply that had a set of ratings printed on it's side. The PSU died one day, unsurprisingly. Taking the device apart, I was able to identify the failed component inside. What was interesting was that the rating of the failed component was about half of the ratings printed on the side of the PSU.

In other words, the PSU could only safely provide half the 12V rating printed on the side of it's case!

[sasrob]

im going for the OCD modXstream pro 500W should be ok...

[MUff1N]

The one fact I'm absolutely sure of is this...
A quality PSU will give you the power you want when it's needed & last for years.

BUT, a cheap-O PSU not only won't supply the the power when needed, but will damage & take other HW components with it which ends up costing a small fortune in the replacement of said HW parts.

So for me there's no taking chances when it comes to the PSU that is expected to produce the "Quality" power that's needed to power all of my HW components so that they last a very, very long time.
There's never the chance of "Should be OK" going into my system.

The old saying still holds true here: Cheap in, Cheap out!

Case in point: I'm now going on over 2 years of steady everyday OCing of my system with no component failures.
Not to mention 6-8 hrs of gaming on my system daily! This includes OCing my graphics card while gaming.

[PorPorMe]

Well said, Muff1N, that about says it all.

[Áedán]

Originally Posted by Áedán

It reckons my system needs a 170W PSU.

Actually, it isn't far out for this one. The mains load of the system is around the 200W mark, and with a PSU efficiency of about 80%, that puts the internal power consumption around the 160W mark.

[noob]

Actually the first calculator looks pretty correct for power draw.

Most PSU's ratings are not that close to real world. Most put ratings for a temp of 20-25C. Real world would have that PSU sitting at about 50C at a minimum. That degrades the performance. So yes, while the system draw may be only 200-300W. The peak draw at startup, and PSU degradation due to heat may mean that 250W continuous draw may need a 600W rated PSU.

[Daniel ~]

Originally Posted by PorPorMe

C.o.d?

Don't be stingy...I'm letting you keep half

[PorPorMe]

Originally Posted by Daniel ~

Don't be stingy...I'm letting you keep half

Stingy? Well I never...............................and I was going to send you the big half!

[bonesaw]

i go with what i think i need, then add about 200w to that.