Need a power supply suggestion

EquineHero · Jun 20, 2018

Intel S5000VSA server motherboard

Dual Intel Xeon X5355, overclocked to 3.2Ghz with SetFSB, 1.25v, 80c at 100% for 30 minutes on dual Hyper 212 Evos.

16GB ECC DDR2 667MHz

AMD HD 5870 2GB OC to 1000MHz

NZXT Phantom 210 with front drive cages removed and a custom dual-3.5 inch bay mounted on the bottom.

Thermaltake TR2 430w

Power supply is definitely not sufficient to run this build at its full potential. OuterVision recommends a 1200 watt power supply.

I want to know if I'll be fine with 800W because that's what I can afford right now.

I have other computers, this is just a fun build. Do not instruct me to get different parts except the power supply.

I just want an answer, is 800w enough or do I need more.

Ilya__ · Jun 20, 2018

I used a wattage calculator from Cooler Master and got about 700 watts for your machine. So, I am confident anything over 800 watts should be fine.

Proof:
https://ibb.co/ngv2N8

geofelt · Jun 20, 2018

Your X5355 has a TDP of 125w.
Think double that if overclocked.
Your 5870 may need up to 225w.
I think 800w may be about right from a capacity point of view.

Thermaltake TR2 is tier 7 on this list; time to gat a better unit:
https://linustechtips.com/main/topic/631048-psu-tier-list-updated/

I like the new Seasonic focus line; here is a 850w unit:
https://www.newegg.com/Product/Product.aspx?Item=N82E16817151188

EquineHero · Jun 20, 2018

Ilya__ :

You used 4x4, I'm using 8x2 and these use a ton of power. The HD 5870 is also OC'd to 1GHz. I'm also using a sound card and 8 120mm fans rated at 4w each.

Ilya__ · Jun 20, 2018

EquineHero :

I see, you didn't specify some of those, but I'll reconsider:
That RAM will use 10 watts more tops, OC on that card, adds about another 25-30 watts, high-end sound add 10 watts, 32 watts worth of fans. So you got about another 80 watts more there. Still any good quality 800+ PSU will handle this system.

EquineHero · Jun 20, 2018

Ilya__ :

Would a thermaltake smart white be good? they only make them up to 700w but that's still enough without GPU OC? I can also get a different GPU later on like a 1060. the 5870 is just replacing my broken RX550 at the moment, they're pretty matched in performance.

Ilya__ · Jun 20, 2018

EquineHero :

Ilya__ :

Would a thermaltake smart white be good? they only make them up to 700w but that's still enough without GPU OC? I can also get a different GPU later on like a 1060. the 5870 is just replacing my broken RX550 at the moment, they're pretty matched in performance.

700watt is a little tight. I think it will be fine if you remove overclock from CPU and GPU though.

EquineHero · Jun 20, 2018

Ilya__ :

EquineHero :

700watt is a little tight. I think it will be fine if you remove overclock from CPU and GPU though.

the overclock on the CPUs is what allows this thing to remain relevant, lol. What about a Corsair CX750M?

I have the CX750M in my primary rig, a Rosewill Arc 650 Modular, and the crappy TR2 430. The Rosewill is powering an i7 2600 and an R9 390X. I killed a 400W with the 390 and Folding@Home. Is the 430W enough for the 2600 and 390X for gaming? My main rig has a 4790K, 32GB RAM, a 1070 and a Tesla M2050. I need the Tesla. Cna I run my main rig on 650?

geofelt · Jun 20, 2018

Buy stronger than what you need.
A psu will only use the wattage demanded of it.
In the process, it will run cooler and quieter if it loafs a bit.
When overclocking, the psu will be more stable if it is not pushed too hard.

The real key is to buy a top quality unit.
Look for a tier 1/2 unit.

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