Re: M2NBP-VM CSM

Robert Kowalczyk wrote:
Hi
I just set up a system with ASUS M2NBP-VM CSM, dual core 4600 AMD and Kingston memory (2 x 512) recommended by ASUS. Tried two different configurations: SATA and ATA drives with XP installed. All the drivers from a CD installed yet the system is much slower then my old AMD 1900.
Any ideas?

Robert.


Slow could mean a couple of things. Slow CPU or slow disks.

For slow CPU, amdcompare says your 4600+ runs at 2400MHz. The
CPU clock setting in the BIOS should be delivering 200MHz to the
processor. The full speed multiplier should be 12x as a
consequence.

Athlon64 processors have the ability to change the multiplier
on the fly. That provides the OS with an opportunity. When
the OS sees that the idle task is running a lot (desktop is
idle), the multiplier can be dropped to a low value like
4x or 5x or whatever. That is the FID or frequency ID. The
OS loads a new FID, creating less waste heat in the processor.
When the OS detects that the user needs processing power (load
on system has risen), the OS turns the processor back up to
12x. Such a scheme is called Cool N' Quiet, for Athlon64.
It includes the ability to adjust the VID for Vcore voltage
at the same time.

If, for any reason, you are stuck in the low multiplier,
your system will be slow. I don't have a reason as to why
you'd be stuck, but a low multiplier value would explain a
complaint of poor compute performance.

Download RMClock and use it to display the current FID.

http://cpu.rightmark.org/download.shtml
http://cpu.rightmark.org/download/rmclock_225_bin.exe

You don't need to change anything with RMclock, and can use
it for observing. Or you can try to fix things.

Another utility is CPUZ, for checking system hardware params.
Current version is 1.40.

http://www.cpuid.com/cpuz.php

To check out your hard drives, you can run HDTach, and see
the general shape of the data transfer curve. Result for
a hard drive, should be a tilted line, about 60MB/sec or a
bit more at the beginning of rhe disk, and 40MB/sec or so
at the end of the disk. If you see only ~4MB/sec, and the
CPU goes to 100% during the test, then you are in PIO mode.
Typical reason for being in PIO mode, is Windows has
detected CRC errors while attemptiung transfers from the disk,
and Windows responds by turning down the interface rate on
the cable. The most extreme condition for that, is to use
PIO mode, where the CPU pumps all the bytes itself, and
DMA is no longer being used. Microsoft has a procedure for
resetting the CRC counter, and returning to "DMA if available"
for the controller interface.

HTH,
Paul

.

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