Need opinion on my power supply

[Joe]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

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.

 

[Paul]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

In article <rNKYe.1848$X6.88@fe05.lga>, "Joe" <none@charter.net> wrote:

> 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.

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 12V@0.5A 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 5V@1.5A and 12V@1.5A, 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

 

[Joe]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

thanks!
"Paul" <nospam@needed.com> wrote in message
news:nospam-2309050751200001@192.168.1.178...
> In article <rNKYe.1848$X6.88@fe05.lga>, "Joe" <none@charter.net> wrote:
>
>> 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.
>
> 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 12V@0.5A 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 5V@1.5A and 12V@1.5A, 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

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.asus (More info?)

Joe wrote:
> 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.

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