you can boot a knoppix to perform those benchmarks…

BUT DO NOT BOOT KNOPPIX ON SYSTEMS WITH NTFS AND LSI RAID ADAPTERS!!! (you might lose your partition table)

harddisk benchmarks

Benchmark Linux System

cpu

apt-get install sysbench
sysbench --test=cpu --cpu-max-prime=20000 run
sysbench 0.4.12: multi-threaded system evaluation benchmark

Running the test with following options:
Number of threads: 1

Doing CPU performance benchmark

Threads started!
Done.

Maximum prime number checked in CPU test: 20000
Test execution summary:
total time: 29.8547s
total number of events: 10000
total time taken by event execution: 29.8524
per-request statistics:
min: 2.90ms
avg: 2.99ms
max: 6.04ms
approx. 95 percentile: 3.31ms

Threads fairness:
events (avg/stddev): 10000.0000/0.00
execution time (avg/stddev): 29.8524/0.00

CPU Benchmarks example results:

CPU Blowfish
CPU Blowfish
This Machine 2253 MHz 5.037
Intel(R) Celeron(R) M processor 1.50GHz (null) 26.1876862
PowerPC 740/750 (280.00MHz) (null) 172.816713
CPU CryptoHash
CPU CryptoHash
This Machine 2253 MHz 286.729
CPU Fibonacci
CPU Fibonacci
This Machine 2253 MHz 1.806
Intel(R) Celeron(R) M processor 1.50GHz (null) 8.1375674
PowerPC 740/750 (280.00MHz) (null) 58.07682
CPU N-Queens
CPU N-Queens
This Machine 2253 MHz 5.500
FPU FFT
FPU FFT
This Machine 2253 MHz 0.908
FPU Raytracing
FPU Raytracing
This Machine 2253 MHz 19.235
Intel(R) Celeron(R) M processor 1.50GHz (null) 40.8816714
PowerPC 740/750 (280.00MHz) (null) 161.312647