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Is 750w enough?

O

Ohmycaptain

Gawd
Joined
Jul 10, 2011
Messages
717
Hey guys, I'm getting the NZXT Hale90 PSU and I'm wondering if I should get the 850w or the 750w.

I'm wondering, since it's a gold certified PSU, if I can get the 750w and have enough room to comfortably set this up without problems. I don't plan on upgrading for a while, this is what will be in my rig for probably 2 years.



i7-2600k (I will overclock to 4.4ghz and stop there)

2x EVGA GTX 570's Overclocked as well.

Asus Sabertooth TUF (rev 3.0) motherboard

8GB G Skill Sniper 1866mhz DDR3 RAM

WD Caviar Black 640GB HDD

128GB Samsung SDD

LG DVD Drive

$35 Sound Card with S/PDIF input for my bose surround sound

NZXT Phantom with 3x 200mm blue LED fans, 3x 120MM Blue LED fans, 1x 140mm blue LED fans, and 2x 12" UV Cold Cathodes.




Now, I'm thinking 850w would be enough for all of this, but if I can cheap out and get 750w with no problem, I'd rather do that (I need to save money where I can, this build is costing me $2,000 and I just want to save as much as possible with it).

So, do you think 750w would be enough, since it's gold certified? Also, the fans at maximum are rated 20w each, I believe. So that would be 7 fans at 20w max each.
 
Gold Certified means nothing regarding the PSU's capability to handle your system.

Due to your plans for overclocking both the CPU and GPUs, you're gonna be cutting it close with a 750W PSU. Doable but close. I recommend the 850W just to be on the safe side.
 
Danny Bui said:
Due to your plans for overclocking both the CPU and GPUs, you're gonna be cutting it close with a 750W PSU. Doable but close. I recommend the 850W just to be on the safe side.
Click to expand...

I agree here. I would recommend the 850W if you're planning on doing any overclocking of either.

Ohmycaptain said:
I'm wondering, since it's a gold certified PSU, if I can get the 750w and have enough room to comfortably set this up without problems. I don't plan on upgrading for a while, this is what will be in my rig for probably 2 years.
Click to expand...
Danny Bui said:
Gold Certified means nothing regarding the PSU's capability to handle your system.
Click to expand...

In regards to this: The Bronze/Silver/Gold/Platinum certified PSUs have nothing to do with their output, only how efficient they are. The 80 PLUS - Wikipedia, the free encyclopedia certification is about efficiency, and, therefore, about how much electricity they use, or heat the PSU will generate.

Example: a 750W Bronze vs a 750W Platinum PSU will both give 750W, but at full load the Bronze would be using ~915W whereas the Platinum would use ~840W. You can look at 80 PLUS - Wikipedia, the free encyclopedia for more information.
 
With those 2 video cards i suggest 750 watt. If you were only going to use one video card 750 watt would be fine.
 
Danny Bui said:
Gold Certified means nothing regarding the PSU's capability to handle your system.

Due to your plans for overclocking both the CPU and GPUs, you're gonna be cutting it close with a 750W PSU. Doable but close. I recommend the 850W just to be on the safe side.
Click to expand...

+1 to this.
 
why do you have a $35 sound card, when the MB has S/PDIF output built onto the board?
 
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