Seems low, are your sure that all the settings (both in your control panel and in 3Dmrk2001se) are set at default or performance?? I get 13100 with:
Pentium 4 2.66B
1024MB PC1066 RDRAM
Ti4400 (300,600 [essentially a 4600 with bad memory])
Maxtor 7200RPM 80GB 2MB cache
You should be getting more than 13000, if you ask me (better graphics card, better CPU, but worse memory bandwidth [not THAT big of a deal in 3Dmrk2001se] should get a better score than mine, I believe). Just make sure all the settings are at default, especially AA and AF.
Well I already did install those drivers but I did entertain the thought by reinstalling them. BAM!! Got 5000 point more to my score with at 14661 score. I have had some software corruption in the past when I was playin with the timings on my ram and may have hosed them a bit. I am much pleased with the score and my AGP card is not OCed either. That damned Forceware driver doesnt like this card being oced.
Sounds like you were running the benches with AA or other "eye-candy" enabled. Reinstalling the drivers would reset to defaults and allow the higher scores. If you had driver corruption that would cause a 60% performance drop, you'd know it by more than a benchmark score.
Where there's a will, there's a way-even when it comes to screwing up.
You should get at least 12000 as you say. Some of the other guys made good points on your drivers and having to many things set to best graphics. You could go in and set things to fastest performance and since you are using the Ti4600 card you can now go to the 35.30 drivers they now have at the web site if you are using XP.
Another thing you can do to really improve frame rates is in the open GL area of the control panel for the card set the Vertical sync: to ( Off by default )
If you download the stock driver set from Nvidia the 35.03 version you will see that you can not adjust clock frequencies later because there is no option for them.
What you can do is go into the Registry Start/Run/Regedit then go into HKEY_LOCAL_MACHINE and then select SOFTWARE then select Nvidia Corporation.
Under that heading you will see a folder called GLOBAL open the plus sign you will see a folder called NVTweak.
Highlight that folder don't open the plus sign, now at the top of the Registry Editor Select the Edit option and then NEW then DWORD Value.
Name the NEW DWORD ( Coolbits ) then right click on the new folder called Coolbits and give it a value of 3 Hex then close up your registry.
What this will do is 2 things, first off you will get a new Control Panel option under Direct 3D called More Direct 3D and in here you will see a Vertical sync Option, set it to Auto Select and set the number value for frames ahead to 12. The default is 3.
Now if you look closely at your options on the left of the control panel for the card you will now see a Clock Frequency option available to set the MHz of the card.
This should help you get those numbers up to at least over 10000.
Barton 3200+ 400MHz
2x512 KinstonHyperX PC3200
SONY CD 52x
SONY RW 52x/24x/52x
SONY DVD 16x/40x