Confused on how much Watt my power supply should have.

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thomasz3

thomasz3

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Now im trying to create a well thought out build. But the thing im struggling with is how much Watt my power supply should have. I have tried to investigate as much as possible and these are the results:

eXtreme Power Supply Calculator Lite: 340 W
Newegg Power Supply Calculator: 1158 W
Picking The Right Power Supply, Forum on Tom'sHardware.co.uk: 550 W

My planned pc build is:

Motherboard: ASRock H97M PRO4 Micro ATX LGA1150
CPU: Intel Core i5-4590 3.3GHz Quad-Core
Video Card: EVGA GeForce GTX 970 FTW ACX 2.0 4GB
Memory: Crucial 8 GB DDR3-1600 Kit (dual channel 2x4gb)
Storage: 1 tb 7200 RPM 64 cache (not sure which one yet.)
Case: Zalman Z11 Plus (Includes: 2x80mm fan, 1x120mm fan, 2x120mm LED fan.)

*There will not be much overclocking besides the stock Overclock of the video card.
** all parts have been selected with Dutch pricing and deliviring.

All help will be highly appreciated!

 
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ko888
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thomasz3

thomasz3

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With 550 Watt could i also expand my pc in the future with more sticks of ram and more Storage. Or should i than pick a 600 Watt just to compensate? Thnx for the quick reply though! :D
 
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ko888

ko888

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A Seasonic S12G-450 or a Seasonic G-450 (SSR-450RM Active PFC F3) would have no problem powering that system configuration.

The ASRock H97M Pro4 doesn't support SLI mode so you don't have to worry about multiple graphics cards.

The Intel Core i5-4590 is multiplier locked so there's not much overclocking that can be done with it.

DDR3 memory modules consume less than 3 Watts per module.

Add 10 Watts more for each additional 7200 RPM hard disk drive.

An SSD has a typical power draw of less than 1 Watt.
 
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thomasz3

thomasz3

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Dear ko888.

The pricetag of the Seasonic S12G 450 W. Is higher than the supplys i have been looking for with more Watts and were high on the PSU tier list. Like the NZXT Hale82N 650W (tier list: http://www.tomshardware.co.uk/forum/id-1804779/power-supply-unit-tier-list.html)

Now im not sure if these that i listed will be able to run my Pc (Im not sure wich connecters and cables i really need.)
I know that i could fit 2 of my case fans on the motherboard. but 3 of them have a Molex connector.

So which one would the recomanded be?
Seasonic S12G 450 W (70 euro)
NZXT Hale82N 650W (69 euro)
Super Flower Golden Green HX 550 watt (69 euro)
be quiet! Pure Power L8 630W CM (72 euro)

*Based on what it would cost to let it ship to me (Dutch prices)
 
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ko888

ko888

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Power Supply Requirements for a single NVIDIA Reference Design GeForce GTX 970
• NVIDIA specifies a minimum of a 500 Watt or greater system power supply. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)
• the power supply must also have a maximum combined +12 Volt continuous current rating of 35 Amps or greater
• the power supply should also have at least two 75-Watt 6-pin PCI Express supplementary power connectors. There are some non-reference design cards that require one 75-Watt 6-pin and one 150-Watt 8-pin PCI Express supplementary power connectors or just one 150-Watt 8-pin PCI Express supplementary power connector.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

For your Intel Core i5-4590, 84 Watt TDP processor a maximum combined +12 Volt continuous current rating of 31 Amps or greater is recommended.

Seasonic S12G 450 W €70
• OEM: Seasonic
• maximum combined +12 Volt continuous current rating: 37 Amps <===== Sufficient
• two 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
• Modular Output Cables: No
• Official Intel Haswell Compliance: Yes
• 80 PLUS GOLD Efficiency Certification
• 5 Year Limited Warranty

NZXT Hale82N 650W €69
• OEM: FSP
• maximum combined +12 Volt continuous current rating: 50 Amps <===== Way more than sufficient
• four 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== More than sufficient
• Modular Output Cables: No
• Official Intel Haswell Compliance: No
• 80 PLUS BROINZE Efficiency Certification
• 5 Year Limited Warranty
• Avoid this PSU. There is a design flaw that causes electrical ripple and noise levels to exceed what is allowed by ATX12V Power Supply Design Specifications.

Super Flower Golden Green HX 550 watt (SF-550P14XE) €69
• OEM: Super Flower
• maximum combined +12 Volt continuous current rating: 45.5 Amps <===== Way more than sufficient
• two 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
• Modular Output Cables: No
• Official Intel Haswell Compliance: Yes
• 80 PLUS GOLD Efficiency Certification
• 5 Year Limited Warranty

be quiet! Pure Power L8 630W CM €72
• OEM: HEC / Compucase
• maximum combined +12 Volt continuous current rating: 47 Amps <===== Way more than sufficient
• two 75-Watt 6-pin and two 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
• Semi-Modular Output Cables: Yes
• Official Intel Haswell Compliance: Claimed but the +3.3V rail is too close to going out of spec.
• 80 PLUS BRONZE Efficiency Certification
• 2 Year Limited Warranty
• Avoid this PSU. It has loose voltage regulation on the +12V and +3.3V rails.

The choice comes down to the Seasonic S12G 450W or the Super Flower Golden Green HX 550 watt (SF-550P14XE).
 
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thomasz3

thomasz3

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Oh wow, Thank you so much!
Thanks for taking the time and such a well thought out answer!

You really answered all my qeustions, even the ones that i diddnt ask yet!
You truely deserve my honour!

Thank you, good sir!
 
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