Solved

Help buying a new PSU

Posted on 2013-12-03
16
514 Views
Last Modified: 2013-12-05
Hi All,


I recently bought this graphics card, which I think needs two 6 PIN PCI-e power connectors.

My current power supply has none, so needs replacing.

I have this case and CPU, whcih has a 150mm PSU limitation.

The current power supply powers four SATA hard drives and a four PIN is plugged into the mother board.

Can anyone help me pick out a new PSU from one of these sites?

amazon, scan, aria


many thanks
D
0
Comment
Question by:detox1978
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 7
  • 5
  • 4
16 Comments
 
LVL 35

Accepted Solution

by:
Dan Craciun earned 400 total points
ID: 39692328
0
 
LVL 2

Author Comment

by:detox1978
ID: 39692370
I know very little about power supplies and why they differ in price so much.

Are there any around to £30 - £50 mark?
0
 
LVL 35

Expert Comment

by:Dan Craciun
ID: 39692400
You should be fine with this: http://www.amazon.co.uk/Seasonic-M12II-520Semi-Module-ATX12V-Power-Supply/dp/B0038T0V8Q/ref=sr_1_10?s=computers&ie=UTF8&qid=1386077149&sr=1-10&keywords=Seasonic

Yes, there are much cheaper PSU's, but once you buy high-end components you need high quality PSU, or you risk crashes or abnormal behavior.

On your system, the processor is rated at 125W, video card at 225W, 4 drives are around 35W for a total of 385W, or 75% of the rated power for a 520W PSU.
0
Why Off-Site Backups Are The Only Way To Go

You are probably backing up your data—but how and where? Ransomware is on the rise and there are variants that specifically target backups. Read on to discover why off-site is the way to go.

 
LVL 2

Author Comment

by:detox1978
ID: 39692887
Is this the same as the second one you posted?
0
 
LVL 35

Expert Comment

by:Dan Craciun
ID: 39692913
Nope. The second one was a 620W PSU at £72, the third one is a 520W PSU, at  £55.
0
 
LVL 2

Author Comment

by:detox1978
ID: 39693839
Yeah the second one at 620W for £72 looks similar to this one for £55...
0
 
LVL 2

Author Comment

by:detox1978
ID: 39694216
Ah, one is semi-moduler the other isnt.
0
 
LVL 92

Assisted Solution

by:nobus
nobus earned 100 total points
ID: 39694844
calculate the power you need here : http://images10.newegg.com/BizIntell/tool/psucalc/index.html
and allow for a 50 W margin
0
 
LVL 35

Expert Comment

by:Dan Craciun
ID: 39694861
@nobus: don't you find Newegg's tool a little too overestimating?

Last year I tried their estimate on a gaming system I assembled for a friend.
The PSU calculator estimated a 720W need for the system, but on real-life usage (FPSs, mainly, some prime95 for a few hours, to test stability) the power sucked from the outlet never surpassed 520W. Don't remember the exact specs, but the PSU on the system was a Seasonic Bronze 850W.
0
 
LVL 2

Author Comment

by:detox1978
ID: 39694932
Thanks for the tips.  My setup seems to come in at 585 W.

I bought the non moduler PSU.
0
 
LVL 92

Expert Comment

by:nobus
ID: 39695142
Dan -  i always had the opposite -  it suggested a lower power wattage than i expected
you can compare it with this one - to be sure :
http://extreme.outervision.com/psucalculatorlite.jsp
0
 
LVL 35

Expert Comment

by:Dan Craciun
ID: 39695496
If I put the components correctly, the Outervision calculator has a recommended PSU Wattage of 469W, compared to 585W on Newegg.
This includes a 90% usage and 20% capacitor aging.
0
 
LVL 92

Expert Comment

by:nobus
ID: 39695688
interesting Dan; can you post what items you filled in; so i can check also?
if you're correct (and i assume so), newegg is trying to sell a bit too much
0
 
LVL 35

Expert Comment

by:Dan Craciun
ID: 39695713
I probably forgot something the second time, but I'm in a hurry. Screenshot attached:
PSU on outervision
0
 
LVL 35

Expert Comment

by:Dan Craciun
ID: 39697650
Yeah, on the first try I added a 120mm fan. Add it and you'll have 469W.

Not shown is the System load at 90% and capacitor aging at 20%.
0
 
LVL 92

Expert Comment

by:nobus
ID: 39698320
yep i'll use this  outervicion one from ,ow
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
During and after that shift to cloud, one area that still poses a struggle for many organizations is what to do with their department file shares.
If you're a developer or IT admin, you’re probably tasked with managing multiple websites, servers, applications, and levels of security on a daily basis. While this can be extremely time consuming, it can also be frustrating when systems aren't wor…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question