What size PSU will I need?

TekkersHobo · 30 Jan 2014 at 10:21

These are my specs:
CPU - Intel I7 4770k
Motherboard - Gigabyte Z87-HD3
RAM - 8GB Corsair Vengeance 1866 Mhz
HDD - 1TB Western Digital
SSD - 128GB Corsair Force Series GS
Graphics Card - Soon to be a GTX 780TI Classified
Monitor - 23.6" AOC 1920x1080.

I will be overclocking the CPU at some point in the future, possibly the GPU, and not sure on whether or not to OC the RAM, or just buy 16GB of G Skill Trident X 2400Mhz. Obviously, I will need watercooling or uprated air fans, if anyone has any suggestions.
Thank you.

NoNameNoNumber · 30 Jan 2014 at 10:24

600w will be plenty.

I've got 2 GTX 780's and a 2500k @ 5GHz all under water running well on a 660w Seasonic

TekkersHobo · 30 Jan 2014 at 10:25

So do you think perhaps a decent make 750w? Just to be on the safe side?

NoNameNoNumber · 30 Jan 2014 at 11:11

This would be more than enough and it's the same price as a 650w

YOUR BASKET
1 x Seasonic G series 750w '80 Plus Gold' Modular Power Supply £99.95
Total : £109.55 (includes shipping : £8.00).

mickyflinn · 30 Jan 2014 at 11:17

A decent 600w will be adequate but if you want a little extra watts then.....

YOUR BASKET
1 x Corsair CS750M 750W Semi-Modular 80+ GOLD Certified Power Supply (CP-9020078-UK) £79.99
Total : £89.59 (includes shipping : £8.00).

Dervious · 30 Jan 2014 at 12:05

TekkersHobo said:
So do you think perhaps a decent make 750w? Just to be on the safe side?

I would.

Not sure what the average/peak power draw will be on your system, but a bit of extra headroom for the PSU wouldn't be a bad idea.

clone · 30 Jan 2014 at 15:21

Google eXtreme Power Supply Calculator Lite this will tell you how may watts your system will need.

TekkersHobo · 31 Jan 2014 at 06:08

mickyflinn said:
A decent 600w will be adequate but if you want a little extra watts then.....

YOUR BASKET
1 x Corsair CS750M 750W Semi-Modular 80+ GOLD Certified Power Supply (CP-9020078-UK) £79.99
Total : £89.59 (includes shipping : £8.00).

I have ordered this, along with the 780TI Classified. I hope I have made the right choices?

Make · 31 Jan 2014 at 07:43

750W is way overkill, so you've used a bit of extra money, but.. No harm done otherwise.

That rig won't even pull 400w at full overclocks, even if you stress both the CPU and GPU.

Smoogels · 31 Jan 2014 at 08:42

My overclocked 8350 and 280X peaks at 400W from the wall when playing Battlefield 4 and around 350W in most areas of the game.

Make · 31 Jan 2014 at 11:26

Smoogels said:
My overclocked 8350 and 280X peaks at 400W from the wall when playing Battlefield 4 and around 350W in most areas of the game.

In contrast my Overclocked 4670k and GTX 670 peak at 250W when stress testing, but gaming they stay way under 200.

Intels are a bit more energy efficient