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Windows 7: Need help with new power supply purchase

21 Feb 2013   #1
Thomaszee

Windows 7 Home premium 64bit
 
 
Need help with new power supply purchase

Hey there I'm going to upgrade my power supply of 400W to 700W+, but I'm not sure if it will be compatible with my current hardware.

Current hardware:

Graphics card: NVIDIA GeForce GTX 550 Ti
CPU: AMD Athlon II x4 620
RAM: 6GB Dual-Channel DDR2 @399MHz
Motherboard: Acer RS780HVF (AM2)
Hard Drives: 699GB Western Digital WDC WD7501AALS-00J7B1 ATA Device (SATA) [x2]

Speccy Spec snapshot: http://speccy.piriform.com/results/5...AH7lPclRqaxxWP
Thanks in advance :-)


My System SpecsSystem Spec
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21 Feb 2013   #2
Apprentrice5

Windows 7 Home Premium 64Bit (Service Pack 1)
 
 

Hi Thomaszee, im not an expert on PSU's but i have a 650w PSU in my machine and there is no problem there, and from what i can see from your spec you shouldnt have a problem with a 700w+, just make sure you purchase from a decent manufacturer.

Also if i am right in thinking (correct me if im wrong) also gotta look at the 12v rail? to make sure there will be enough power to the GPU??

Also to save writing out your system spec for each post, update your system spec

Hope it helps

Regards
Toby
My System SpecsSystem Spec
21 Feb 2013   #3
Thomaszee

Windows 7 Home premium 64bit
 
 

I'm planning on buying a corsair PSU, most of them have a 12v rail so should be fine on that
My System SpecsSystem Spec
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21 Feb 2013   #4
TVeblen

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

You can use this tool:
eXtreme Power Supply Calculator
to calculate what you need.

Don't forget to fill in the last box: Capacitor Aging. This compensates for the known loss in power that happens as your power supply gets older. The general rule of thumb is to enter 10% for each year you expect to use the supply in your system.
My System SpecsSystem Spec
21 Feb 2013   #5
bobkn

Windows 7 Pro X64 SP1
 
 

eVGA recommends a power supply with at least 400W and 24A at +12V for their 550ti card.

Aside from that, your graphics card needs a PCI-E 6 pin auxiliary power connector. (A Molex-to-PCI-E adapter would be an alternative, but it's best to not use adapters.) It needs a 24 pin pin ATX power connector. (20+4 would be fine.) It also needs a 4 pin ATX 12V power connector for the CPU.

Why are you upgrading the PSU? If you have a good 400W one, it's adequate. It would make sense to put a higher powered graphics card in this oldish PC.

If you have the money, it might make sense to buy a larger capacity PSU that can follow you through future upgrades. My old PC Power & Cooling Silencer 750 has lived in several cases. Its electrolytic capacitors haven't shown any tendency to die yet.
My System SpecsSystem Spec
21 Feb 2013   #6
Thomaszee

Windows 7 Home premium 64bit
 
 

Well, the graphics card requires 500W on itself (recommendation on nvidia website) and it also has to feed all other components.
My System SpecsSystem Spec
21 Feb 2013   #7
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

No the card doesn't require 500W itself. That 500W that video card manufacturer's recommend is for the system total, and is always higher than actually needed to take into account people using low quality no name power supplies.

This,

ASUS GeForce GTX 550 Ti Direct CU 1 GB Review | techPowerUp

will give you an idea of what the card actually uses.
My System SpecsSystem Spec
21 Feb 2013   #8
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

A Corsair 700 will be more than adequate. Which model were you thinking of getting ?

http://www.newegg.com/Product/Produc...82E16817139010

http://www.tigerdirect.com/applicati...35_37813_51107

http://www.newegg.com/Power-Supplies/Category/ID-32

Just for research purposes, not sure if they ship to you.

My new one will be the HX750
My System SpecsSystem Spec
21 Feb 2013   #9
Thomaszee

Windows 7 Home premium 64bit
 
 

Quote   Quote: Originally Posted by AddRAM View Post
A Corsair 700 will be more than adequate. Which model were you thinking of getting ?

CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply - Newegg.com

Corsair Power Supplies 700W - 999W Wattage at TigerDirect.com

Power Supplies - Newegg.com

Just for research purposes, not sure if they ship to you.

My new one will be the HX750
Still deciding on which to buy but that one does look good indeed :-)
My System SpecsSystem Spec
21 Feb 2013   #10
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

My System SpecsSystem Spec
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 Need help with new power supply purchase




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