strange behavior from new built system


J

Jo9100

hi, here's what i have:

tac case - antec nsk4400, with its 380W high efficiency psu
asus p5ld2-vm
pentium d 945 @ 3.4ghz
512mb of kingston 667

problems:

1. my psu does some strange sounds when im clicking mouse wheel eg on
a webpage and im scrolling by moving the mouse, it does a squeaky
sound, a bit like a cricket. it also starts to make other strange
sounds at random, and i give it a little tap so it stops but this is
very annoying. i tried returning it but the guy plugged in and said,
no its working, there isnt any problem... its not your psu. but i just
unmounted it and listenned to it alone it is it the PSU indeed.

2. i have a pentium d 945, it is supposed to be very powerful.
however, i only have to open firefox on idle and it takes a good 5
seconds for it to open. i experience music lag when there is more than
20% cpu load i monitor in task manager. why?

thanks a lot
jo
 
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D

DaveW

Your PSU is too low powered, and I suspect it's an "inexpensive" no-brand
one made with inferior parts so that it will sell for a low price. Do
yourself a favor if this is true and get a quality unit.
 
J

Jo9100

Your PSU is too low powered, and I suspect it's an "inexpensive" no-brand
one made with inferior parts so that it will sell for a low price. Do
yourself a favor if this is true and get a quality unit.
its an Antec SU-380, and it says it has more voltage on cpu than
others or sthg like that
 
P

Paul

Jo9100 said:
hi, here's what i have:

tac case - antec nsk4400, with its 380W high efficiency psu
asus p5ld2-vm
pentium d 945 @ 3.4ghz
512mb of kingston 667

problems:

1. my psu does some strange sounds when im clicking mouse wheel eg on
a webpage and im scrolling by moving the mouse, it does a squeaky
sound, a bit like a cricket. it also starts to make other strange
sounds at random, and i give it a little tap so it stops but this is
very annoying. i tried returning it but the guy plugged in and said,
no its working, there isnt any problem... its not your psu. but i just
unmounted it and listenned to it alone it is it the PSU indeed.
The sound can be "coil noise". The sound could be coming from the
Vcore circuit on the motherboard. Or the sound could be coming
from inside the power supply. Any electrical components that expand
and contract in response to applied voltage or current, can emit a
sound. Some coils have a rubber material applied to them, in the
hopes that any resonance will be damped out.
2. i have a pentium d 945, it is supposed to be very powerful.
however, i only have to open firefox on idle and it takes a good 5
seconds for it to open. i experience music lag when there is more than
20% cpu load i monitor in task manager. why?

thanks a lot
jo
Have you looked in your Event Viewer ? Are there any error messages in there ?

A 5 second delay, is enough time for a "timeout event" at the disk
driver level.

Are you certain your disk drive interface is operating in "DMA mode" ?
Instead of "PIO mode".

http://groups.google.ca/group/alt.comp.hardware.pc-homebuilt/browse_frm/thread/4d237dea8351b83e/e59d28e5c2d001ce

For some fun, you could try HDTach. That program benchmarks read performance
over the surface of the disk. If a disk is operating in a good DMA mode,
you will see 60MB/sec at the beginning of the disk and about 40MB/sec
near the end of the disk. If you are operating in PIO mode, the line
will be flat on the chart, and only offer 4MB/sec or so.

(Note - their server is out of service right now...)
http://www.simplisoftware.com/Public/index.php?request=HdTach

You can also look for the download of HDTach here:

http://www.majorgeeks.com/HDTach_d672.html

This is what a good disk drive would look like. Here the transfer
rate is limited by the disk media, and not the cabling.

http://www.garbage.at/hdtach_sg320g.png

The transfer curve here is flat, and a low bandwidth. This is
similar to what a disk in PIO mode would look like. In PIO you
might get 4MB/sec transfer rate.

http://www.siliconpopculture.com/images/reviews/toshiba5gb/hdtach.gif

Paul
 
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J

Jo9100

The sound can be "coil noise". The sound could be coming from the
Vcore circuit on the motherboard. Or the sound could be coming
from inside the power supply. Any electrical components that expand
and contract in response to applied voltage or current, can emit a
sound. Some coils have a rubber material applied to them, in the
hopes that any resonance will be damped out.





Have you looked in your Event Viewer ? Are there any error messages in there ?

A 5 second delay, is enough time for a "timeout event" at the disk
driver level.

Are you certain your disk drive interface is operating in "DMA mode" ?
Instead of "PIO mode".

http://groups.google.ca/group/alt.comp.hardware.pc-homebuilt/browse_f...

For some fun, you could try HDTach. That program benchmarks read performance
over the surface of the disk. If a disk is operating in a good DMA mode,
you will see 60MB/sec at the beginning of the disk and about 40MB/sec
near the end of the disk. If you are operating in PIO mode, the line
will be flat on the chart, and only offer 4MB/sec or so.

(Note - their server is out of service right now...)http://www.simplisoftware.com/Public/index.php?request=HdTach

You can also look for the download of HDTach here:

http://www.majorgeeks.com/HDTach_d672.html

This is what a good disk drive would look like. Here the transfer
rate is limited by the disk media, and not the cabling.

http://www.garbage.at/hdtach_sg320g.png

The transfer curve here is flat, and a low bandwidth. This is
similar to what a disk in PIO mode would look like. In PIO you
might get 4MB/sec transfer rate.

http://www.siliconpopculture.com/images/reviews/toshiba5gb/hdtach.gif

Paul
I was getting 2.6MB/s, I knew something was in PIO but not how to set
it back... I can't do anything to make my music lag, thanks so much!

for the noise, ill bring my tower to the place they sold me the psu,
this should make it

thanks a thousand times again!!
 

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