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
Solved

Help buying a new PSU

Posted on 2013-12-03
16
508 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
  • 7
  • 5
  • 4
16 Comments
 
LVL 34

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 34

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
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 2

Author Comment

by:detox1978
ID: 39692887
Is this the same as the second one you posted?
0
 
LVL 34

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 34

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 34

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 34

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 34

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

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

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

Suggested Solutions

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

856 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