Calculation for PSU

[Liamrox287]

Hey Guys.

I need to know what is taken into factor when picking a power supply (all the items that use the power) I can list them all and you guys can tell me if ill be covered?

 

[Novuake]

All of them... Here is a calculator : http://www.extreme.outervision.com/psucalculatorlite.jsp

Awlays get a safety margin of 100W or so.

 

[Novuake]

Also read this : http://www.tomshardware.com/reviews/power-supply-oem-manufacturer,2913.html

Its importent to get a reliable manufacturer. Tell us what PSUs you are able to get and we can tell you what is good or not.

 

[legendkiller]

nowadays a 750w PSU is more than enough, 850w can surely handle 690s in 2 way SLI

 

[lunyone]

nowadays a 750w PSU is more than enough, 850w can surely handle 690s in 2 way SLI

Depending on the build, the Corsair CX 430w PSU is plenty for most peoples needs. It all depends on the parts that are used that will define the needs of the PSU.

 

[Liamrox287]

Corsair AX750 is what im looking at. i7-3770k, H100i, GTX 670 4GB, Two 120GB SSD, 2TB WD RED HDD. What else goes into consideration?

 

[lunyone]

Generally it's all of your combined parts, but generally it's the CPU, GPU, and extra case fans. Obviously you might also want to take OC'ing into consideration too. With your proposed parts you would need about a quality 550w PSU to get plenty of power for your build needs. If you going to do some OC'ing, you might want to consider a 600w or more. If your going to SLI in the future a 750w or better will give you the needed room and PCI-e power connectors for SLI'ing GTX 670's (4 x PCI-e power connectors are needed for that setup).

 

[Liamrox287]

I gave all my shit, what do i need to run it

 

[ko888]

For a system using a single GeForce GTX 670 graphics card NVIDIA specifies a minimum of a 500 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 30 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

For a system using two NVIDIA reference design GeForce GTX 670 graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 700 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 45 Amps or greater and that has at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most important factor.

Overclocking of the CPU and/or GPU(s) will require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

 

[Liamrox287]

I want to be able to run all my equipment with a 4.1 - 4.3 overclock on the cpu and a small overclock on the graphics card.

 

[ko888]

I want to be able to run all my equipment with a 4.1 - 4.3 overclock on the cpu and a small overclock on the graphics card.

What I've specified will handle a CPU overclocked up to 4.5 GHz.

Overclocking the GeForce GTX 670 only requires 1 Amp more from the +12V rail when compared to running at stock clock speeds as long as you don't do manual voltage tweaking.

Do you have any plans for running two GeForce GTX 670 in 2-way SLI mode any time in the future? This will also depend on the brand and model of your motherboard and whether or not it will support SLI mode.

The Corsair AX750 has more than enough capacity to handle two GeForce GTX 670 in 2-way SLI mode in any case.

 

[Liamrox287]

my mobo does support two and i will only be using one at the current time.