Need opinion on my power supply

  • Thread starter Thread starter Joe
  • Start date Start date
J

Joe

I am planning on getting rid of my old board and processor and upgrading
virtually everything but the case.
Is this power supply suitable for a dual core? I've been using this power
for a few months with no issues.

http://www.xpcgear.com/vantecvan350n.html

I'll have a CD CDR, 2 hard drives, 2GB memory, above average video card on
my system.
 
You might want to read this:

http://www.bleedinedge.com/guides/psu_select/psu_select_01.html

It has a fair amount of information on power requirements. It's too old to
include dual core CPUs, but you may be able to get those details elsewhere.

The VAN-350N isn't large enough for the most extreme systems, but it may be
OK for yours. You didn't give enough information to allow a reasonable
estimate to be done.


Address scrambled. Replace nkbob with bobkn.
 
I am planning on getting rid of my old board and processor and upgrading
virtually everything but the case.
Is this power supply suitable for a dual core? I've been using this power
for a few months with no issues.

http://www.xpcgear.com/vantecvan350n.html

I'll have a CD CDR, 2 hard drives, 2GB memory, above average video card on
my system.
Click to expand...

That supply barely has enough output current to run a single core
P4 system. My P4C800-E draws 14.4 amps from +3.3V, when using
four DIMMs (DIMM supply is connected to +3.3V). Also, the 12V@15A output
is barely enough for a basic P4 system.

There are dual core Intel and dual core AMD systems. Here are some numbers.

http://www.amdcompare.com (select X2 processor model - 89W and 110W processors)

http://processorfinder.intel.com/scripts/default.asp?CHRID=1039 (95W and 130W)

To work out the +12V current, 130W/12V * 1/0.90 = 12A at 90% vcore efficiency

Data for video cards is available on xbitlabs. There are some individual
articles, as well as these two:

http://www.xbitlabs.com/articles/video/display/ati-powercons.html
http://www.xbitlabs.com/articles/video/display/ati-vs-nv-power.html

A hard drive is about 5V@1A and [email protected] while idling (11 watts total)
The hard drive motor is generally allowed to draw 12V@2A while bringing
the spindle up to speed. That lasts for 10 seconds or so, when you first
turn on the computer.

A CD/DVD has a nameplate spec of [email protected] and [email protected], but the real power
consumption is frequently not stated or known. No appreciable +12V should be
used if there is no media in the tray, and no motor current being used. The
controller board might continue to draw power from +5V. I don't know which
supply runs the laser.

Keeping these corrections to power consumption in mind, you can then use
a site like the following, to work out the power consumption on each
power supply rail:

http://takaman.jp/D/?english

Running an SLI config takes a lot more power. The A8N-SLI family motherboard
manuals have a suggested power supply size table in them. Download one of
those user manuals, to see what Asus recommends.

HTH,
Paul
 
thanks!
Paul said:
That supply barely has enough output current to run a single core
P4 system. My P4C800-E draws 14.4 amps from +3.3V, when using
four DIMMs (DIMM supply is connected to +3.3V). Also, the 12V@15A output
is barely enough for a basic P4 system.

There are dual core Intel and dual core AMD systems. Here are some
numbers.

http://www.amdcompare.com (select X2 processor model - 89W and 110W
processors)

http://processorfinder.intel.com/scripts/default.asp?CHRID=1039 (95W and
130W)

To work out the +12V current, 130W/12V * 1/0.90 = 12A at 90% vcore
efficiency

Data for video cards is available on xbitlabs. There are some individual
articles, as well as these two:

http://www.xbitlabs.com/articles/video/display/ati-powercons.html
http://www.xbitlabs.com/articles/video/display/ati-vs-nv-power.html

A hard drive is about 5V@1A and [email protected] while idling (11 watts total)
The hard drive motor is generally allowed to draw 12V@2A while bringing
the spindle up to speed. That lasts for 10 seconds or so, when you first
turn on the computer.

A CD/DVD has a nameplate spec of [email protected] and [email protected], but the real power
consumption is frequently not stated or known. No appreciable +12V should
be
used if there is no media in the tray, and no motor current being used.
The
controller board might continue to draw power from +5V. I don't know which
supply runs the laser.

Keeping these corrections to power consumption in mind, you can then use
a site like the following, to work out the power consumption on each
power supply rail:

http://takaman.jp/D/?english

Running an SLI config takes a lot more power. The A8N-SLI family
motherboard
manuals have a suggested power supply size table in them. Download one of
those user manuals, to see what Asus recommends.

HTH,
Paul
Click to expand...
 
Joe said:
I am planning on getting rid of my old board and processor and
upgrading virtually everything but the case.
Is this power supply suitable for a dual core? I've been using this
power for a few months with no issues.

http://www.xpcgear.com/vantecvan350n.html

I'll have a CD CDR, 2 hard drives, 2GB memory, above average video
card on my system.
Click to expand...

From the advice you got so far it seems as if you will need a new supply.
Before you buy, you might want to go through this big review:

http://www.hexus.net/content/reviews/review.php?dXJsX3Jldmlld19JRD0xMzU5
 
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