Will my power supply be enough??

N

nik11105

New Member
OK so im building a new pc an im not sure if this power supply is enough for not only now but for future sli and other up grades

PSU

http://www.scan.co.uk/products/750w...r-88-eff-sli-crossfire-36db-eps-12v-135mm-fan

or

http://www.scan.co.uk/products/850w...bronze-85-eff-sli-crossfire-eps-12v-135mm-fan

here are the specs for my pc

Intel CPU Core i7 950
Corsair Cooling Air Series A70
Samsung 1Tb Spinpoint
LG Blu-Ray Combo
Gigabyte GA-X58A-UD3R
Gigabyte GeForce GTX 570
Samsung 2TB Spinpoint F3EG
120mm BitFenix SpectreFan Blue LED
Windows 7 Home Premium 64bit
Coolermaster CM-690 II Advanced
TP-Link 300Mbps Wireless N PCI
Asus Xonar D2X 7.1
G.Skill RipJaw 12GB

Also an off topic question, How do i get rid of ESD by touching the case if its all black?

so thanks
 
Ethan3.14159

Ethan3.14159

Active Member
Why the hell are people recommending 850-950 watt PSUs? This is just such terrible advice. Not only is it overkill, it's a waste of money, and bad the overall efficiency of the PSU.

The 750w Silverstone in the original post is perfectly acceptable for this system with room for a 2nd GTX 570, overclocking, extra drives, etc.
 
Drenlin

Drenlin

Active Member
Ethan3.14159 said:
Why the hell are people recommending 850-950 watt PSUs? This is just such terrible advice. Not only is it overkill, it's a waste of money, and bad the overall efficiency of the PSU.

The 750w Silverstone in the original post is perfectly acceptable for this system with room for a 2nd GTX 570, overclocking, extra drives, etc.
Click to expand...

With a high overclock, an X58 system with two 570's could very well top 750w.
 
Drenlin

Drenlin

Active Member
It's easier than you'd think. An OC'd i7 quad will easily top 200W when you push it above 4GHz. The GTX 570's stock TDP is 219W, so 250W with a substantial OC is not unrealistic. The X58 chipset uses about 30W, another 30W for the RAM, 25W for those hard drives, probably ~30W for the fans, and we'll add 20W for anything else power consuming that the system might have. The total comes to 835W at full load, though it'd likely be closer to 790-800W while gaming and whatnot.
 
Last edited:
N

nik11105

New Member
i will definetly not be overclocking as high as 4GHZ but mabey 3.5-3.7 Ghz
and there will not be any GPU overclocking
 
Last edited:
Ethan3.14159

Ethan3.14159

Active Member
Drenlin said:
It's easier than you'd think. An OC'd i7 quad will easily top 200W when you push it above 4GHz. The GTX 570's stock TDP is 219W, so 250W with a substantial OC is not unrealistic. The X58 chipset uses about 30W, another 30W for the RAM, 25W for those hard drives, probably ~30W for the fans, and we'll add 20W for anything else power consuming that the system might have. The total comes to 835W at full load, though it'd likely be closer to 790-800W while gaming and whatnot.
Click to expand...
If you think 2 HDD's and 3 DIMM's of RAM are going to use 55 watts you really need to do some research. An normal RAM module will consume <2 watts depending on voltage. 10,000 RPM drives don't even consume 10 watts at full tilt. Spinpoints use about 5-6 watts at full tilt. Not to mention no application is going to put the CPU and graphics cards at full load at the same time. Gaming is never going to put a system at full load.

Only when you push the voltages on the CPU is the power consumption going to greatly increase. From what the OP has said he won't be drastically overclocking anyway. The Silverstone 750w in the first post is perfect for the job. No reason to pay more for something unnecessary.
 
Last edited:
You must log in or register to reply here.
Top