My setup is:
Intel P4 2.6 Ghz
2GB RAM
ATI X1600 AGP video card
My system profiler says I have everything supported yet I get very low Quartz scores on xbench.

Here are my results:
Results 49.86
System Info
Xbench Version 1.3
System Version 10.4.8 (8L2127)
Physical RAM 2048 MB
Model ADP2,1
Drive Type HDT722516DLAT80
CPU Test 52.14
GCD Loop 95.44 5.03 Mops/sec
Floating Point Basic 59.43 1.41 Gflop/sec
vecLib FFT 31.47 1.04 Gflop/sec
Floating Point Library 56.71 9.87 Mops/sec
Thread Test 79.65
Computation 83.25 1.69 Mops/sec, 4 threads
Lock Contention 76.36 3.28 Mlocks/sec, 4 threads
Memory Test 76.12
System 56.83
Allocate 45.13 165.73 Kalloc/sec
Fill 69.70 3389.02 MB/sec
Copy 61.41 1268.49 MB/sec
Stream 115.21
Copy 106.12 2191.92 MB/sec
Scale 105.04 2170.05 MB/sec
Add 128.83 2744.44 MB/sec
Triad 124.79 2669.62 MB/sec
Quartz Graphics Test 38.86
Line 38.89 2.59 Klines/sec [50% alpha]
Rectangle 25.35 7.57 Krects/sec [50% alpha]
Circle 26.44 2.16 Kcircles/sec [50% alpha]
Bezier 60.40 1.52 Kbeziers/sec [50% alpha]
Text 109.54 6.85 Kchars/sec
OpenGL Graphics Test 103.24
Spinning Squares 103.24 130.96 frames/sec
User Interface Test 21.91
Elements 21.91 100.56 refresh/sec
Disk Test 52.92
Sequential 69.53
Uncached Write 65.56 40.25 MB/sec [4K blocks]
Uncached Write 61.72 34.92 MB/sec [256K blocks]
Uncached Read 83.61 24.47 MB/sec [4K blocks]
Uncached Read 70.87 35.62 MB/sec [256K blocks]
Random 42.72
Uncached Write 16.84 1.78 MB/sec [4K blocks]
Uncached Write 70.10 22.44 MB/sec [256K blocks]
Uncached Read 92.59 0.66 MB/sec [4K blocks]
Uncached Read 108.92 20.21 MB/sec [256K blocks]

seems normal!

the user interface-test was everytime bad at my testings... but with your graphics card (it is qe compatible, isn´t it?) it should be higher?!

That is my thinking as well. Under system profiler it does notice the X1600 as a PCI card when it truly is AGP. It does do the native resolution of the LCD at 1650x1050@60hz and says that Quartz 2D Extreme/ QE/ and rotation are all supported. I just expect a smoother graphical performance I guess. Any suggestions?

My AGP Geforce 6600GT also says PCI and I have poor element results.... Maybe that is why? Is there a way to change the bus to AGP?

Well your elements is 2x better then mine.. I have 11.xx something..

u can try AGPgart to enable AGP bus.
u can found it here http://x86dev.org/forums/index.php

no intel chipset though

i got in the 300's for the interface test, no qe/ci. is that normal?

512mb geforce 7600gs, Macvidia Driver minus graphics acceleration kext(causes the login window to crash)

does anybody know how to fix the gfx acceleration so it doesnt crash the login window?

i have macvidia 1.0.81

btw, its an nforce 680i chipset.