How strong of a PSU do I need?

[LeonF]

Hello,


Thanks for taking your time to read and help me out on this question.

I'm about to invest on my next gaming rig and this is the list of items I'm about to purchase.

- ASUS Rampage IV Extreme S-2011
- Corsair Dominator 16 GB DDR3 1866MHz
- Intel Core i7 3820 prosessor S-2011
- Noctua nh-d14 (Both fans in use)
- 2x OCZ 120 GB SSD 2,5" Vertex 3 MAX
- 1x Samsung SATA HDD
- Cooler Master Cosmos II Big Tower

- ASUS GeForce GTX TITAN 6GB PhysX CUDA -

 

[meowmix44]

Hmmmm,

850W should do but if you want more headroom then get a 900W. If you are a rich person then get a 1000W PSU

 

[LeonF]

If I plan to add more RAM, say 32gb? 900W, would be fine?

In other words, 850Watt minimum, 900W optimal, 1000W recommended?

 

[meowmix44]

If I plan to add more RAM, say 32gb? 900W, would be fine?

In other words, 850Watt minimum, 900W optimal, 1000W recommended?

Sure the 900W would work but get a good quality brand

 

[lafontma]

wow, to above post.. way overkill..

TDP of 250w for video card
TDP of 130w for CPU..

The rest is minimal... Most benchmarks have a total system running at a max 400-450w for a similar configuration

 

[LeonF]

I already have a Corsair HX850 Watt in my possession. I don't plan to buy multiple graphic card. Just the setup that I've listed up there, with a possible chance of adding more RAM in the future. So, am I in the green light?

 

[rmiiirusty]

I already have a Corsair HX850 Watt in my possession. I don't plan to buy multiple graphic card. Just the setup that I've listed up there, with a possible chance of adding more RAM in the future. So, am I in the green light?

probably about 300 watts more than you need. Use it!! It will leave you headroom to sli later if desired and add more drives and fans etc...

 

[DarkSable]

That corsair is a great power supply, and will do you JUST fine.

RAM draws basically nothing, so it doesn't matter how much you put in there.

The only things that make a big difference are the CPU and the graphics card.


... that being said, what's your monitor setup, and what's your case?

I almost guarantee you that two 670s are a far better choice for a triple monitor setup.

If you're only playing on one monitor, well, you're spending several thousand too much.

 

[LeonF]

probably about 300 watts more than you need. Use it!! It will leave you headroom to sli later if desired and add more drives and fans etc...

Awesome, thank you.

That corsair is a great power supply, and will do you JUST fine.

RAM draws basically nothing, so it doesn't matter how much you put in there.

The only things that make a big difference are the CPU and the graphics card.


... that being said, what's your monitor setup, and what's your case?

I almost guarantee you that two 670s are a far better choice for a triple monitor setup.

If you're only playing on one monitor, well, you're spending several thousand too much.

Currently running two monitors, BenQ and Samsung, don't know their exact models from top of my head, but both ran 1920x1200. Case will be the one I've listed the, Cooler Master Cosmos II Big Tower.

 

[rmiiirusty]

Please don't forget to choose a best answer and good luck with your build..

 

[JamesSneed]

Im with the guys recommending 750-850 watts. Im usually the one griping about people going way overboard on power supplies since 500 watts is more than enough for 99.9% of all single GPU setups. Your rig is extreme overkill with the 2011 pin CPU and Titan GPU which means who knows what you will do next so overkill it to start so you don't have to upgrade later.

These are as high quality as it gets with power supplies and not just because they are platinum rated. You can check out JohnyGuru reviews which are some of the best and see the internals of these use very high end parts. The big upside on the platinum efficiency is they run very cool not adding much heat wise to your case.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151111

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139041