How Much Power Will I Need?

[ninjaparsnip]

I've found PC Partpicker's to be different to the wattage stated on the products.
Any help is much appreciated

Intel Core i5 4460
EVGA GeForce GTX 970
ASRock Mod 1150 H97M
8GB (2x4GB) Corsair Vengeance

 

[dudeman509]

500W (with a strong 12V rail) - 600W.

I mentioned in another thread that my system listed below with an overclocked FX series chip and overclocked GTX 970 pulls ~400W from the outlet @ max load (and PSU is ~80% efficient).

 

[ninjaparsnip]

500W (with a strong 12V rail) - 600W.

I mentioned in another thread that my system listed below with an overclocked FX series chip and overclocked GTX 970 pulls ~400W from the outlet @ max load (and PSU is ~80% efficient).

Would the EVGA 500W PSu (http://www.amazon.co.uk/EVGA-500W-PC-Power-Supply/dp/B00GP5Y6J0/ref=sr_1_1?ie=UTF8&qid=1435072948&sr=8-1&keywords=Power+Supply) do it?

 

[AgentGadget]

According to the cooler Master power wattage calculate, you need at least 367w
So it would be wise to use a 80 plus 450 watt or more power supply

 

[Derza10]

500W (with a strong 12V rail) - 600W.

I mentioned in another thread that my system listed below with an overclocked FX series chip and overclocked GTX 970 pulls ~400W from the outlet @ max load (and PSU is ~80% efficient).

Would the EVGA 500W PSu (http://www.amazon.co.uk/EVGA-500W-PC-Power-Supply/dp/B00GP5Y6J0/ref=sr_1_1?ie=UTF8&qid=1435072948&sr=8-1&keywords=Power+Supply) do it?

That is not a very high quality PSU, go with something like this :

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£46.40 @ CCL Computers)
Total: £46.40
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-23 17:35 BST+0100

EDITED: Noticed you are not in US here is a good PSU for you ^

 

[Rookie_MIB]

Well to expand on what was previously mentioned, there are two ways to look at it:

1) The bare minimum. That means you would run your PSU at near full power 100% of the time while the computer is under load. IIRC the 970 is about a 120w card, the CPU is a 85w part, a motherboard accounts for about 50w or so, toss in a few drives and fans for about another 50w. So - under full load, you're looking 300w so any decent 350w PSU could theoretically handle it. Barely.

2) The smart way. PSU's hit their efficiency peak at 50-70% load, so you take your rough wattage estimate, multiply it by 2/3rds and you come out to about 450w. So - to have a PSU that lives a long and happy life, you should get a 450-500w CPU so your PSU is running at about half power or so.

The advantages of the smart way? Cooler running PSU. Running a 350w PSU at full tilt generates a lot of heat - much like redlining your engine for hours at a time. A PSU designed for a much higher max wattage will run much cooler when it's only going half-throttle.

Longevity. Obviously running full tilt 24/7 puts a lot of stress on the small PSU. Too long, too much heat, and you can overheat the PSU and blow it.

Peace of mind. When a PSU blows, it -could- wreck a bunch of rather expensive parts with a power surge. It would be a shame to wreck 500$ in parts because you wanted to save $25.00 on a PSU.

So - overall, aim for a minimum 450w Bronze rated 80+ unit from a reputable manufacturer. Read reviews, look for deals, and buy appropriately.

 

[dudeman509]

Make sure that the PSU puts out at LEAST 400+ W on the 12V rail though. For instance, some units advertise they are 500W, yet only put out 350-380 or so on the 12V. Usually just a problem with the cheaper supplies though, but have seen it happen.

 

[sora]

Just go with an XFX 550W or Seasonic 520W power supply to be safe in my opinion.

 

[ninjaparsnip]

500W (with a strong 12V rail) - 600W.

I mentioned in another thread that my system listed below with an overclocked FX series chip and overclocked GTX 970 pulls ~400W from the outlet @ max load (and PSU is ~80% efficient).

Would the EVGA 500W PSu (http://www.amazon.co.uk/EVGA-500W-PC-Power-Supply/dp/B00GP5Y6J0/ref=sr_1_1?ie=UTF8&qid=1435072948&sr=8-1&keywords=Power+Supply) do it?

That is not a very high quality PSU, go with something like this :

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£46.40 @ CCL Computers)
Total: £46.40
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-23 17:35 BST+0100

EDITED: Noticed you are not in US here is a good PSU for you ^

I'm on a budget and I really need it as cheap as possible. Do you know any other cheap PSUs around 500W that are perhaps less expensive?