Windows 7 Forums


Reply
Thread Tools

PSU.Suitable output

 
 
Mychael Mychael is offline
Established Member
Mychael's Avatar
Join Date: Mar 2010
Location: Melbourne, victoria
Posts: 1,122
Thanked: 87
Send a message via ICQ to Mychael Send a message via MSN to Mychael Send a message via Skype™ to Mychael
 
      08-24-2010
I'll probably be ordering my new PSU this week. I was going to get the largest Corsair unit 1000w which has great specs and gets good reviews but it is more power then I will need.

I recall reading something about it not being so good for the PSU to run underloaded all the time but not sure if I'm remembering it correctly.

So apart from the obvious $$ saving is there any other reason to not go for a higher powered PSU then you'll need?

All the (corsair) PSU's in my list are 80 plus silver rated but the 750 and 850 watt units have a 7yr warranty as opposed to a five yr for the 1000 watt unit.

There is $60 difference in price between the 850 and the 1000 and $100 between the 750 and the 1000. All are modular units. HX series.
 
Reply With Quote
 
 
 
 
clifford_cooley clifford_cooley is offline
(c_c)
clifford_cooley's Avatar
Join Date: Mar 2009
Location: Arkansas, USA
Posts: 4,441
Thanked: 924
 
      08-24-2010
The question of which hardware configuration you will be running needs to be answered before a size PSU can be given.

Which processor?
Which graphics card and how many?
How many memory modules?

and so on....

Here is a power supply calculator found at Newegg.com
http://educations.newegg.com/tool/psucalc/index.html
 
Reply With Quote
 
Mychael Mychael is offline
Established Member
Mychael's Avatar
Join Date: Mar 2010
Location: Melbourne, victoria
Posts: 1,122
Thanked: 87
Send a message via ICQ to Mychael Send a message via MSN to Mychael Send a message via Skype™ to Mychael
 
      08-24-2010
I know my requirements will be safely below needing a 1000w unit. 750 or 850 would suffice. just wondering if I were to get the 1000 unit does it do it any harm to never be worked very hard. It's just something I seem to recall reading somewhere but maybe I got it wrong.

However to answer your query either an i5 or i7 processor 4-8 gig of DDR3 memory. Single video card HD5770. 3xHDD
 
Reply With Quote
 
clifford_cooley clifford_cooley is offline
(c_c)
clifford_cooley's Avatar
Join Date: Mar 2009
Location: Arkansas, USA
Posts: 4,441
Thanked: 924
 
      08-24-2010
I think I can safely say that whoever made the claim about under worked PSU, didn't know what they were saying. If this were to be an issue, I believe you would see specifications along the lines of Minimum Power Requirements as well as the Maximum.
 
Reply With Quote
 
Nibiru2012 Nibiru2012 is offline
Quick Scotty, beam me up!
Nibiru2012's Avatar
Join Date: Oct 2009
Location: Planet X
Posts: 4,739
Thanked: 1055
 
      08-24-2010
I think you're going way overboard here. Even high-end gaming rigs with two video cards in SLI or Crossfire usually need no more than 750 watts with two hard drives, 8 GB of RAM, etc.

Use the PSU calculators available at several websites. Newegg is a good start that Cliff gave you. The reason to use at least two calculators is to get a better idea of what you truly need. Plug in all the info and see what comes up. Then take that number and add a 20% cushion factor and you'll be good.

I am running three internal hard drives, a DVD-R/RW burner, 6GB of RAM, an ATI HD 3850 card, a wireless PCI card, 4 fans total, a high-end Gigabyte motherboard and an Intel E8400 3.0 GHz Core 2 Duo Dual core CPU.

My PSU is 550 watts and have plenty of room to spare!

Get a the correct sized PSU for what you have planned. Be sure it's rated at least as an 80 PLUS Bronze Certified unit.
 
Reply With Quote
 
TrainableMan TrainableMan is offline
^ The World's First ^
TrainableMan's Avatar
Join Date: May 2010
Location: PA, USA
Posts: 4,337
Thanked: 836
 
      08-24-2010
I run a 550W with my single 5770. Now I know you like the velocorapters and I don't know if they require extra power but you will still probably be fine at 550, you definitely don't need more than 750 ... even for most dual GPUs that's enough.
 
Reply With Quote
 
Mychael Mychael is offline
Established Member
Mychael's Avatar
Join Date: Mar 2010
Location: Melbourne, victoria
Posts: 1,122
Thanked: 87
Send a message via ICQ to Mychael Send a message via MSN to Mychael Send a message via Skype™ to Mychael
 
      08-24-2010
My existing PSU is also around 550w and doing fine but it's getting a bit long in the tooth now. I want a modular unit and the smallest is 650w, there's only about $50 difference between that and the 750w and if I got the 750w , well there's only $40 difference between that and the 850w. Soo,,, plus I like the idea of a 7 yr. warranty. They are all 80 Plus Silver grade.

I run 6 case fans and in addition to the hardware I've mentioned I'll have DVD & bly-ray drives and in internal video card. Want a bit of headroom in case something comes up later in terms of chips.

Maybe what I read was that a PSU is most efficient when run at about 60% of it's rated output.
 
Reply With Quote
 
Nibiru2012 Nibiru2012 is offline
Quick Scotty, beam me up!
Nibiru2012's Avatar
Join Date: Oct 2009
Location: Planet X
Posts: 4,739
Thanked: 1055
 
      08-24-2010
My 550watt unit is a modular but that's here in the States.

Get the 750 watt and you'll be fine. Even if you were stress testing your CPU and GPU at the same time you'd probably wouldn't go over 400 watts max.

But if you want to spend the extra bucks and so forth then go for it. On the other hand you could get the correct sized PSU and send the extra bucks you were gonna spend to the following new charity which I just established.

"The Nibiru2012 Society of the Everlasting Evangelical Assembly of Stargate Followers"

Then I could get that new Amazon Kindle I want!
 
Reply With Quote
 
Mychael Mychael is offline
Established Member
Mychael's Avatar
Join Date: Mar 2010
Location: Melbourne, victoria
Posts: 1,122
Thanked: 87
Send a message via ICQ to Mychael Send a message via MSN to Mychael Send a message via Skype™ to Mychael
 
      08-24-2010
hmm, if Iwas a noble soul but I'm not.. I'm more for the "help Mychael spend his money on hardware addiction group" heheh
 
Reply With Quote
 
Nibiru2012 Nibiru2012 is offline
Quick Scotty, beam me up!
Nibiru2012's Avatar
Join Date: Oct 2009
Location: Planet X
Posts: 4,739
Thanked: 1055
 
      08-24-2010
Quote:
Originally Posted by Mychael View Post
hmm, if Iwas a noble soul but I'm not.. I'm more for the "help Mychael spend his money on hardware addiction group" heheh
Sounds like a malignant case of upgradeitis to me! Easy to diagnose, hard to cure.
 
Reply With Quote
 
 
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
No Audio output device is installed. holland Windows 7 Support 8 03-11-2011 07:00 PM
No output to projector through S-video andy1 Windows 7 Support 9 06-07-2010 12:51 AM
Windows 7 x64 - No sound output bug2k10 Windows 7 Support 16 04-22-2010 12:17 AM
No audio Output device is installed on Vaio Gattozzzzz Hardware 2 04-12-2010 05:57 AM
PC - Dual Sound Output capa Hardware 2 08-13-2009 07:32 PM


All times are GMT +1. The time now is 01:25 PM.
W7Forums is an independent website and is not affiliated with Microsoft Corporation.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33