What PSU for my Build?

[AdrianPerry]

Gigabyte GA-Z68A-D3H-B3 Z68 Socket 1155
Intel Core i5 2500K 3.3GHz Socket 1155
Corsair 8GB (2x4GB) DDR3 1600MHz Vengeance
Cooler Master Hyper 212 Plus
Asus GTX 560Ti DirectCU II 1GB GDDR5
Samsung HD103SJ Spinpoint F3 1TB Hard Drive
Sony Optiarc AD-5260S 24x DVD±RW
Casecom 6788 Black Mid Tower Case

^ The above is the build i plan on making in the very near future. I was recommended a PSU (XFX Pro 750W Core Edition PSU) however i noticed that its non-modular. I like the idea of tidy cables and not having too many lose ends. I dont plan on SLI or too much Overclocking, but id like to option to be there in the future if i decide to use it.

What PSU power do i need? 500w, 750w? And can anyone recommend something suitable for this build. Im UK based so something from Ebuyer ideally or similar website.

Here's one I found that looks ideal: http://www.ebuyer.com/product/261367

 

[iam2thecrowe]

id say a good 600w unit will run that setup with room to spare. A 750w unit is only really needed if you want to add another video card for SLI in the future. wow i didnt know Adata made PSU's. The reviews of the HM model look promising though. http://www.kitguru.net/components/power-supplies/zardon/adata-hm-series-650w-power-supply-review/6/ If you want a more trusted brand heres one you should look at http://www.ebuyer.com/product/159920
another couple good psu's
http://www.ebuyer.com/product/264370
http://www.ebuyer.com/product/152008

 

[ko888]

A GeForce GTX 560 Ti has a graphics card power of 170 Watts. This means that the graphics card itself may draw up to 14.2 Amps from the +12 Volt rails.

For a single GeForce GTX 560 Ti graphics card system NVIDIA recommends a power supply with 500 Watts or greater with a +12 Volt continuous current rating of 30 Amps or greater and with at least two PCI Express supplementary power connectors.

For a system with two GeForce GTX 560 Ti graphics cards in 2-way SLI mode NVIDIA recommends a power supply with 650 Watts or greater with a +12 Volt continuous current rating of 44 Amps or greater and with at least four PCI Express supplementary power connectors.

The +12 Volt continuous current rating specification is vastly more important than the power supply's wattage specification.

Because you have specified that you would like to option of SLI and Overclocking to be there in the future, if you should decide to use it, look for a power supply that has four PCI Express supplementary power connectors with the correct power distribution for its +12 Volt rails.

You can forget the OCZ ModXStream Pro Series 700W - OCZ700MXSP because it cannot handle two GeForce GTX 560 Ti graphics cards in 2-way SLI mode. It only has two PCI Express supplementary power connectors and looking at the power distribution of its +12 Volt rails tells you why it can't meet the electrical current requirements :

12V1 - ATX 20(4) Pin Connector and P4/AUX(EPS) Connector

12V2 - Molex, SATA, Floppy, One 6-pin PCI Express Connector and One 8-pin PCI Express Connector

Each rail's OCP (Over Current Protection) limit is 25 Amps.

The motherboard, CPU and expansion cards will get their +12 Volt power from 12V1.

The graphics card(s) obtain most, if not all, of their power from 12V2 which is where the HDDs, CD/DVD drive(s), etc. also get their power. SLI'd GTX 560 Ti's alone will have already exceeded the current limit of the 12V2 rail.

The Adata HM series HM-750, that you have linked to, is definitely able to power a system with two GeForce GTX 560 Ti graphics cards in 2-way SLI mode and have plenty in reserve for overclocking both the CPU and graphics cards. It already has four modular 8-pin PCI Express supplementary power connector cables.

 

[leon2006]

Gigabyte GA-Z68A-D3H-B3 Z68 Socket 1155
Intel Core i5 2500K 3.3GHz Socket 1155
Corsair 8GB (2x4GB) DDR3 1600MHz Vengeance
Cooler Master Hyper 212 Plus
Asus GTX 560Ti DirectCU II 1GB GDDR5
Samsung HD103SJ Spinpoint F3 1TB Hard Drive
Sony Optiarc AD-5260S 24x DVD±RW
Casecom 6788 Black Mid Tower Case

^ The above is the build i plan on making in the very near future. I was recommended a PSU (XFX Pro 750W Core Edition PSU) however i noticed that its non-modular. I like the idea of tidy cables and not having too many lose ends. I dont plan on SLI or too much Overclocking, but id like to option to be there in the future if i decide to use it.

What PSU power do i need? 500w, 750w? And can anyone recommend something suitable for this build. Im UK based so something from Ebuyer ideally or similar website.

Here's one I found that looks ideal: http://www.ebuyer.com/product/261367

Here learn how to do it yourself or be able to validate the recommendations your getting. Use know quality brand PSU such as Corsair, Seasonic, XFX..Antec. Go for modular type cabling.


Calculate your load

http://www.antec.outervision.com/

 

[AdrianPerry]

Thankyou all for the feedback, ive used that calculator for both the current base build, and a future proof SLI and OC'd version. The base gave in about 600w PSU and the Future Proof came in about 800w.

Think ill go with the Adata 850w PSU from ebuyer.com since its cheaper than the bigger branded, comes with a few years warranty anyway, 850w should be more than enough to future proof myself and its modular.
http://www.ebuyer.com/product/261368

 

[obsidian86]

I'd rather get the xfx

http://www.scan.co.uk/products/850w-xfx-pro-modular-80-plus-silver-88-eff-sli-crossfire-eps-12v-135mm-quiet-fan