This is dependant on both the hardisk and the host controller. Data Throughput Rate - A combination of both data access time and data transfer rate. It is a measurement of the total amount of data that the processor can access per unit time. It is dependant also on the speed of the host computer. Benchmarking The hardisk is one of the weakest links in the computer and it has a great impact on overall system performance.
Much time is wasted as the processor sits around waiting for the hardisk to feed it data.
I don't have many hardisks and here are just a few benchmarks I have run on the hardisks that are avaliable to me. I use the CheckHD 0.99c programme to benchmark the hardisks. Quantum Fireball TM 3200AT 2. Quantum Fireball 1280AT 3. Even the 2.35 scored by the Fireball TM 3200AT is higher than the 2.25 reported by the author.