What PSU should I get?

[wingman99]

Sorry I was away but no, it is one one monitor and I didn't plan to overclock it at the moment but I would really like to mainly because some of the specs trubritar got in this video,

.

Antec TPQ-1200 LINK:

Get the Antec TPQ-1200 1200W Continuous Power with PowerCache Technology SLI Ready CrossFire Certified 80 PLUS SILVER Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371032

1000w wats from the wall at stock peek load and you willl pull 800 wats from the psu and have 400w left for overcloking.

 

[Bobnova]

How does 250w per GPU at stock clocks and volts for three gpus plus 130w at stock clocks and volts for the CPU plus chipset (~25w), ram, hard drives, fans, etc. equal 800w?

 

[EarthDog]

Math fail?

The onus isnt on us Bobn....really. Its going to be well over 1kw (as the link I provided was with stock GPU's and a 3.8Ghz o/c of just teh CPU and it hit 1009W) when overclocking and the bottom line is there is no way I would run even a great PSU like the HX1000 at 1kw over the course of its life. Wingy apparently has a bigger sack than us.

That advice to run it frankly scares me a bit. There would be barely any headroom for transient response much less overclocking.

 

[wingman99]

How does 250w per GPU at stock clocks and volts for three gpus plus 130w at stock clocks and volts for the CPU plus chipset (~25w), ram, hard drives, fans, etc. equal 800w?

Because it's 1000w in real life, the TDP is a estimate, thermal design power LINK:http://en.wikipedia.org/wiki/Thermal_design_power

With 80% efficiency from the conversion factor, it's 800w to the PSU

This review below is 3 GTX, and he is measuring the 1000w AC not the approximate 800wDC


LINK:

 

[Bobnova]

GTX480s run at or above TDP, at it in 3d and above it in math loads. Just FYI.
Wall meters are notoriously inaccurate with APFC PSUs, too.

You're giving what the majority of members in this thread believe to be bad advice.
You seem to have views that differ wildly from the experienced members on this site when it comes to PSUs, and you're entirely unconvincing when asked to explain them.

History has proven it to be a bad idea to run a PSU at full or close to full load for long periods of time.

 

[wingman99]

GTX480s run at or above TDP, at it in 3d and above it in math loads. Just FYI.
Wall meters are notoriously inaccurate with APFC PSUs, too.

You're giving what the majority of members in this thread believe to be bad advice.
You seem to have views that differ wildly from the experienced members on this site when it comes to PSUs, and you're entirely unconvincing when asked to explain them.

History has proven it to be a bad idea to run a PSU at full or close to full load for long periods of time.

Well it's a it's not a Wall meter, it's a professional Emu l. x 4 power and energy meter and all the review sites that test the 3X GTX 480 are getting the same max out put from the wall 1000w AC, at 80%efficiency that leaves 800w DC being used from the PSU.

So 800w is not max load on the psu.

Power Consumption http://www.guru3d.com/article/geforce-gtx-480-3way-sli-review/25
2x GTX 480 AC 702w - 3x GTX 480 AC 1009w = 307AC w, The TDP is 246w 12v DC and 300AC with 80% efficinecy convertion. QUOTE On average however that is around 850-950 Watts. Remember that, these are peak / maximum wattages that we are showing.: That's AC

LINK: http://www.fudzilla.com/content/view/18170/1/
QUOTE: TDP is not close to 300W as many have suggested before, it's 250W.

And i'm not going against form members, he said that he was going to overclock and I suggested the Antec TPQ-1200 1200W Continuous Power with PowerCache Technology SLI Ready CrossFire Certified 80 PLUS SILVER Certified Modular Active PFC Power Supply.

LINK: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371032

And hardocp picked Antec 1200w for there first choice.

LINK: http://www.hardocp.com/article/2010/04/27/gtx_480_470_power_supply_unit_buying_guide/6

 

[EarthDog]

You cant assume 80% effciency either. You have to know which PSU he used. Some are 90% these days and that puts you right into the 900W range ACTUAL pull (no volt modding btw). You overclock those cards and you are right back over the 1kw ACTUAL wall. And if its 85% you are still too darn close IMHO (and if oyu volt mod the cards, WELL over 1k again).

Notice how they didnt pick a Corsair HX1000 or any 1kw PSU? I wonder why......

 

[wingman99]

That is correct that's why I change it to Antec TPQ-1200 1200W Continuous Power with PowerCache Technology SLI Ready CrossFire Certified 80 PLUS SILVER Certified Modular Active PFC Power Supply. because the OP said he was thinking of oveclocking.
LINK: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371032

Hard ocp said why he picks the 1000+ because he was oveclocking and considering those factors for enthusiast.

Hard ocp recommendation, and the OP wanted to get the PSU from neweeg the best I could find.

Hard ocp QUOTE:The Antec TruePower Quattro 1200W is the king of the hill when it comes to the capacity of power supply offerings from Antec at this time. With the 1200W capacity of the TruePower Quattro comes six 12v rails and 100A of capacity on those 12v rails. We also get a unit that is 80Plus Silver certified, and covered by a 5 year warranty from Antec. All in all, this unit will power users Tri-SLI Fermi builds with ease for some time to come.

 

[Bobnova]

Glad you agree with what we said at the start of the thread