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ASUS A7M266, Corsair PC2400 DDR and low Sandra scores

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akidd

New Member
Joined
May 18, 2001
I just built a new machine (details below) on a ASUS A7M266 with 512MB of
crucial PC2100 CL2.5 DDR. I was able to get my system stable at 1400mhz and
run quake3 overnight without crashing.

I registered Sisoft Sandra Pro (version 2001.3.7.52) and ran all the
benchmarks. I was happy with all results *except* the memory benchmark.

I get:

INT ALU/RAM Bandwidth 489 MB/S
Float FPU/RAM Bandwidth 621 MB/S

The reference AMD 760 PC2100 CL2.5 DDR (K7) gets:

INT ALU/RAM Bandwidth 537 MB/S
Float FPU/RAM Bandwidth 700 MB/S


I assumed this was just cheap Crucial ram not being up-to-snuff. Later I
orderd 2 sticks of Corsair CM64SD256-2400C2 (PC2400, CAS2 XMS2400) and
replaced the Crucial sticks. Although I can happily run at 1450mhz now and
reliably set to 2-2-2, my Sisoft Sandra scores are exactly the same.

Any ideas? This is really puzzling, I would expect to get at least the
reference scores on the MB many claim to be the fastest out there, using the
fastest DDR available. Ideas?

Windows ME
AMD T-Bird 1.333 @ 1.49
Corsair PC2400 CAS2 - 512MB
ASUS A7m266 - bios 1004a266f - all jumpers default
6 System Fans
nVidia stock GeForce 2 Ultra 64 Meg
SBLive 5.1 Soundcard
Plextor Plexwriter 16/10/40
Toshiba PC-DVD 48x CDRom 16x DVD
Cambridge Soundworks Desktop Theatre 3500 5.1
Enermax 350 Watt PSU
IIyama Vision Master Pro 510 22' Monitor
GlobalWin fan
Artic Silver Cooling
Lian Li PC-60 All Aluminum Case
3Com Ethernet 100 3com NIC
Logitech Infrared/wireless mouse
1 75 gig 7200 RPM IBM Desktar
 

_jubei_

Disabled
Joined
Mar 12, 2001
Location
BROOKLYN, NY
at what speed do you ran your RAM ??? also how much did you pay for 1/2 gig of PC2400 .

If you overclock your ram you will get higher scores
 
T

Thor

Guest
I had the same problem and this is what I came accross. There is a file named ndis.vxd that is a virtual driver for the network. When I ran sisoft with this I got scores the same as yours or maybe even a little less. You can disable this driver from loading in Windows ME/98 if you run msconfig. Once I disabled this my scores were 630/810, before they were 426/578. Try this and let me know.

CJ
 
F

FNG

Guest
What affect does getting rid of that vxd have on your network? On the A7M266 try upping the voltage on VIO1 to the max. I hear if you do that and run in Turbo Mode you can see a difference. I don't know, I got my tbird up to 1570 and cracked it so I'm taking a break from the oc'ing arena with my axia y until i get some liquid cooling. Anyways, I'd love to know what delelting or disabling that ndis.vxd would have on the lan etc..
 

Rodders

New Member
Joined
May 29, 2001
Hi Thor.
I'm running a A7A266 with a 1.2 Athlon @ 157 FSB and my Sisoft scores should be higher too. They're only 578/750 at cas2.
Icouldnt find where to disable the vxd file you mention in msconfig.
Could you explain how to do it please.
Cheers
Rodders
 

Rodders

New Member
Joined
May 29, 2001
[Could you please explain how I can disable the VXD driver you mentioned to get better Sisoft scores.?
I cant find it in msconfig but know that my memscores should be higher.
Thanks
Rodders (-: