Getting a Corsair 400watt PSU...

[vistageek92]

It is getting deliverd today and it will be running the below specs. I was told that it will be able to handle the computer but i was just checking on whether it actaully CAN.
http://www.newegg.com/Product/Produc...82E16817139008


Specs:
CPU: e8400
RAM: 4gb 800MHZ
MOBO: Gig. p31
HDD: 160GB 7200rpm
GPU: 8800GTS (g92)
x5 80mm fans

[Almost Tactf]

IIRC the 8800GTS only draws about 18A so you should be just fine, but time will tell

[vistageek92]

Originally Posted by Almost Tactf

IIRC the 8800GTS only draws about 18A so you should be just fine, but time will tell

yea what is the total volts/amps that an 8800GTS pulls?

[Almost Tactf]

Originally Posted by vistageek92

yea what is the total volts/amps that an 8800GTS pulls?

it's in the post you just quoted 18A

[vistageek92]

ohh LOL i total over looked that. Well i had a 500watt coolmax and it couldn't boot the computer with the 8800GTS plugged in. it was really cheap. So i got the 400watt corsair which i was told was going to be better then the 500watt coolmax

[Almost Tactf]

It's all about the amps on the 12v rail

[vistageek92]

Yea that was the other thing....the coolmax was duel rail and the corsair was single. I usually get corsair PSU but i was trying to save some money. You can see the 750 i used in my Core i7 rig.

[davidhammock200]

Actually I doubt the 8800GTS will draw more than +12V@12A to +12V@15A, so as I recommended, given the low demand nature of your entire system, the Corsair 400W with up to +12V@30A will be fine.

As we are dealing exclusively with "Direct Current" (DC) on the PSU outputs Volt/Amps (V/A) is meaningless & is not used, our only concerns are Voltage, Amperage & Wattage (V*A =W).

Volt/Amps (V/A) is an Alternating Current (AC) unit of measuring "apparent power", when the "standing wave action" of the power grid is basically fooled in to believing that the device to be powered will actually draw more power "apparent power", than in reality it does draw, again measured in Wattage (V*A=W) just as in DC power measurements.

The "Power Factor Correction" circuitry usually Active in today's PSU's corrects this misleading & false V/A "apparent power" reflection given to the "standing wave grid". The point being an increase in efficiency "ON THE POWER GRID SIDE, NOT ON THE PSU SIDE" of the equation. "This is for the greater good of all" in "liberal green speak", however Active PFC actually lowers the efficiency of our PSU's, by a few percentage points!

Enjoy,
Dave

PS: Please post your results after you are up & running!

[linuxfan2000]

That'll work vistageek92! I want you to bench vantage and FINALLY post your score when you get this rig running!

[CaligulaPwns]

Vista, you are questioning David Hammock. Dont.

This may be helpful to all but DH...and Dave please correct me if I am wrong.

W= A*12

I dont even think a GTX285 at full load would pull 18A. Overclocked though, it sure may.

Additional Comment:

165W on full load 3D according to Toms's.

165/12= 13.x Amps from 12v. Overclocking will bring a bit more of course.

[davidhammock200]

Originally Posted by CaligulaPwns

Vista, you are questioning David Hammock. Dont.

This may be helpful to all but DH...and Dave please correct me if I am wrong.

W= A*12

I dont even think a GTX285 at full load would pull 18A. Overclocked though, it sure may.

Additional Comment:

165W on full load 3D according to Toms's.

165/12= 13.x Amps from 12v. Overclocking will bring a bit more of course.

When the Voltage is 12, then A*12=W, but we just use A*V or V*A=W, the amount or type of voltage (AC/DC) doesn't matter.

Tom's HERE doesn't show a 285, but shows a 280@17A & a 260@15.9A & we know from AnandTech's full system power measurements that a 285 pulls about 5W more than a 280, so to be safe, rate a 285 at full load at a about 18A, these being just estimates.

The reason we don't have "hard numbers" is OC'ing & the fact that up to 75W comes through the mobo, the rest coming through the PCI-E's, so we can't just put "clamp-on amperage probes" on the PCI-E wiring.

X-Bit is suppose to have similar numbers.

All of that being said, you have everything just about perfect
Dave

[linuxfan2000]

Originally Posted by davidhammock200

When the Voltage is 12, then A*12=W, but we just use A*V or V*A=W, the amount or type of voltage (AC/DC) doesn't matter.

Tom's HERE doesn't show a 285, but shows a 280@17A & a 260@15.9A & we know from AnandTech's full system power measurements that a 285 pulls about 5W more than a 280, so to be safe, rate a 285 at full load at a about 18A, these being just estimates.

The reason we don't have "hard numbers" is OC'ing & the fact that up to 75W comes through the mobo, the rest coming through the PCI-E's, so we can't just put "clamp-on amperage probes" on the PCI-E wiring.

X-Bit is suppose to have similar numbers.

All of that being said, you have everything just about perfect
Dave

Very good evidence backing up your power supply advice!

[CaligulaPwns]

Originally Posted by davidhammock200

When the Voltage is 12, then A*12=W, but we just use A*V or V*A=W, the amount or type of voltage (AC/DC) doesn't matter.

Tom's HERE doesn't show a 285, but shows a 280@17A & a 260@15.9A & we know from AnandTech's full system power measurements that a 285 pulls about 5W more than a 280, so to be safe, rate a 285 at full load at a about 18A, these being just estimates.

The reason we don't have "hard numbers" is OC'ing & the fact that up to 75W comes through the mobo, the rest coming through the PCI-E's, so we can't just put "clamp-on amperage probes" on the PCI-E wiring.

X-Bit is suppose to have similar numbers.

All of that being said, you have everything just about perfect
Dave

Thx.

I thought the 285 with the die shrink uses less wattage? I know my 65 to 55nm 260 does... I have to look that up.

[davidhammock200]

Originally Posted by CaligulaPwns

Thx.

I thought the 285 with the die shrink uses less wattage? I know my 65 to 55nm 260 does... I have to look that up.

I thought so too, but looking at AnandTech's results, it actually pulls more

[CaligulaPwns]

Higher clocks I believe.