Macintosh Benchmarking Factors
The listed factors have been found to affect each category of benchmark.

Video

• Resolution
• Color Depth
• RAM/Cache speed
• CPU speed
• Bandwidth to VRAM (frame buffer)
• QuickDraw acceleration (INIT/hardware)
• GWORLD memory?
• Cursor resting over the test area
• Softwares which cache the ROM, such as DayStar's QuadraBoost

SCSI

• Disk software driver
• SCSI bus width
• SCSI revision/features
• SCSI controller bandwidth to host
• Parity?
• Blind writes?
• CPU speed (bus speed?)
• CPU architecture
• Hard disk tech/bridge type (type of bridged media)
• Physical prescense of other devices, even powered off.

CPU

• NewerTech VSO IIfx 2.0 control panel inhibits some QuickDraw tests from running. Setting the speed then soft-restarting without the control panel allows these tests to run at the desired clock speed.
• Slight but statistically significant impact discovered for certain benchmarks when the MediaVision ProAudioSpectrum16 is installed and drivers are loaded (IIfx in tested case; more testing needed.)

FPU

RAM

• Softwares which cache the ROM, such as DayStar's QuadraBoost
• Bus speed (CPU speed)
• Enabling virtual memory cuts the read speed roughly in half. Memory write speed seems unaffected.
• Especially in machines with L2 cache enabled, test procedures should be run in the same order and with the same number of repetitions for most accurate comparison.