Need Help Building a Gaming Rig

Last edited:
StrangleHold said:
Most wattage you see on sites are for the whole system.

A GTX 570 has two 6 pin power connectors. Each connector can pull 75W. Most boards will only pull around 100W through the slot. So the max each card can pull (even if it could) is 250W. So two cards even at its limit would be around 500W. But on average under load they only pull around 400/425 max.
Click to expand...

I was just basing it off your numbers. Without considering the rest of the PC you could run 2 cards off a 500w PSU. Which is where my logic failed. Haha
 
Troncoso said:
I was just basing it off your numbers. Without considering the rest of the PC you could run 2 cards off a 500w PSU. Which is where my logic failed. Haha
Click to expand...

I was just talking about the cards. With a (quality 750W) with two GTX 570 pulling 425W under load you would still have around 325W for the rest of the system.

Now I am talking a good single rail. Not one of these crap dual/quad rails that have amps. limits on the rail that you can trip.
 
Last edited:
Ok some of what is above isn't entirely true.

StrangleHold said:
760W continuous/ 836 Peak. with 74 amps.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817703030
Click to expand...

Only has 62A (only :)) on the 12V rail, not 74, and even 836W is only 69.6A, so that must be a misprint. Also im really unimpressed by that 80mm fan, it will be noisy and less than effective. You want a ~140mm fan with double ball bearing. This is a much better deal imo http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049 for $70 after rebate.

StrangleHold said:
Each connector can pull 75W. Most boards will only pull around 100W through the slot. So the max each card can pull (even if it could) is 250W.
Click to expand...

This is not entirely correct. PCIe standards max out at 300W (PCIe 2 and now 3), however several cards have broken this 'rule'. Lets talk about amps eh?

The 570 will draw a max of 219W (18.25A), so around 36.5A max without overclock.

The PSU will need to be able to provide at a minimum 50A on the 12V rail. With EPS cert, it can be multiple rails, however with only ATX cert you remove 12V+2 as this is dedicated to the CPU, then do your calcs.

Simply put, you need something like a XFX, Corsair, Antec 750W which will power this rig.
 
Last edited:
bigfellla said:
Only has 62A (only :)) on the 12V rail, not 74, and even 836W is only 69.6A, so that must be a misprint. Also im really unimpressed by that 80mm fan, it will be noisy and less than effective. You want a ~140mm fan with double ball bearing. This is a much better deal imo http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049 for $70 after rebate.
Click to expand...

The 74 amps is for the total under (continuous) for the 3.3/5/12V. But really both supplies under (peak) can pull close to 1000W on all rails. But true, for 70 bucks the Antec is a good deal

140mm. fans dont mean anything. The one reason is a under mounted fan blows air into the bottom of the supply, then it has turbulence banging around in the supply till it finds its way out the back, plus it causes the supply to have smaller heatsinks. The PC is a S12D unit, has large heatsinks and the 80 pulls air through the supply. If you look at reviews the PC is more efficient under load and runs cooler.




bigfellla said:
This is not entirely correct. PCIe standards max out at 300W (PCIe 2 and now 3), however several cards have broken this 'rule'. Lets talk about amps eh?.
Click to expand...

Regardless of standards, most board manufactures limit the slots wattage to 100W, unless they add a molex or SATA power connector on the board to feed extra. Plus the PCIe power connectors. So adding the slot and connectors you can pretty much guess the max amount a card can pull

bigfellla said:
The 570 will draw a max of 219W (18.25A), so around 36.5A max without overclock.

The PSU will need to be able to provide at a minimum 50A on the 12V rail. With EPS cert, it can be multiple rails, however with only ATX cert you remove 12V+2 as this is dedicated to the CPU, then do your calcs.

Simply put, you need something like a XFX, Corsair, Antec 750W which will power this rig.
Click to expand...

More or less exactly what I said.
 
Last edited:
when you said you want office in your first post, do you mean microsoft office? if so dont get that waste of money piece of shit lol. google docs is free and better IMO
 
You must log in or register to reply here.
Back
Top