New PSU

[Redversion]

Current setup:
GPU: http://www.newegg.com/Product/Produc...82E16814121425
MOBO: http://www.newegg.com/Product/Produc...irtualParent=1
CPU: http://www.newegg.com/Product/Produc...819115077R#top
Memory: http://www.newegg.com/Product/Produc...82E16820231314
Using SATA HD and the only other appliance is the DVD drive.

I have been using a 500W PSU for about 4-5 years now, and I think it's reached the end of its days as my computer can no longer power on with my GPU plugged in. I got a good amount of years out of it, and plus my video card is supposed to require 550W PSU so I was happy it worked for awhile.

I am looking for a replacement. Currently, I am looking at:
http://www.newegg.com/Product/Produc...82E16817116011
80 Plus gold, modular, 750W, and my favorite it has a 5 year warranty. Although, I think 750W is excessive for my current build, and I probably won't be upgrading for another year or two.
Thoughts? Anyone have a PSU they would recommend?

[Lemmiwink]

An XFX550W should be more than enough for that build and will be sufficient for your next build as well unless you go SLI/CF.

[chazus]

A lot of people think that getting a bigger PSU is 'future proofing' but outside of SLI/CF as Lemmiwink said, it's not necessary. Power demand in hardware is going DOWN each iteration. Your next upgrade in that system will use the same, if not less power.

[Redversion]

Thanks for the advice guys. I did not know this. One question though. Is it okay to cut with the bare minimum? In this case meaning getting a 550W power supply when the minimum requirements of the GPU is 550W? I admit, I probably should have not gotten an A in Physics Electricity & Magnetism and I have no idea how a power supply works.

[yurano]

One question though. Is it okay to cut with the bare minimum? In this case meaning getting a 550W power supply when the minimum requirements of the GPU is 550W?

Without going into detail, a good 550W PSU (like the XFX Core) should be sufficient for a 560 Ti system, which consumes 300-350W at load.



http://www.anandtech.com/show/4135/n...-250-market/16

[Lemmiwink]

It's really down to Amps. The recommended 550W minimum is just set there to account for a shitty PSU that is not delivering the Amps needed to run the system. I can break it down to watts for you if you like.

Standard 550W power supply:
+12V 390W output
+5V 120W output
+3.3V 40W output (numbers pulled out of thin air and only given as an expample)

Quality 550W PSU:
+12V 500-550W
+5V ?

doesn't matter anymore, the quality PSU delivers it's promised output over the +12V rail which is your biggest power draw making it sufficient to run ANY setup with 1 gpu you can think of, even the AresII. There is absolutely no reason to buy bigger than needed unless you are looking for a special PSU, like I when I downgraded my AX1200 to a AX860i. Why did I buy such big overkill PSU's in the first place? Because they have black cables and you can buy sleeved cable packs for them as well, plus they are 100% silent 99,99% of the time due to a temp activated fan.

If you are just looking to power your rig and be safe for the next few years, the XFX550W is likely the best buy you will get.

[Redversion]

Thanks yurano and Lemmiwink for the explanations. I will be going with that XFX 550W.