HD Tach is a low level hardware benchmark for random access read/write storage devices such as hard drives, removable drives (ZIP/JAZZ), flash devices, and RAID arrays. HD Tach uses custom device drivers and other low level Windows interfaces to bypass as many layers of software as possible and get as close to the physical performance of the device as possible.
Benchmark Results: While roughly equal in reads, the Force 40GB again crushed the Intel 40GB in writes. The diminutive Force kept pace with the larger capacity drives overall.
CrystalDiskMark is a small benchmark utility for drives and enables rapid measurement of sequential and random read/write speeds. Note that CDM only supports Native Command Queuing (NCQ) with a queue depth of 32 (as noted) for the last listed benchmark score. This can skew some results in favor of controllers that also do not support NCQ.
Benchmark Results: The Intel 40GB bested the Force 40GB in sequential reads here but they were more or less neck and neck for the remaining scores. Again, both were substantially slower than the larger drives in most aspects.