Intel Core 2 Duo T6400 vs Intel Core 2 Duo T8300 vs Intel Core 2 Duo SL9400
Intel Core 2 Duo T6400
► remove from comparisonThe Intel Core 2 Duo T6400 is an entry level dual core processor for cheap laptops. It is based on the Penryn core but offers only 2 MB level 2 cache and a slow clock speed of 2 GHz. The performance should be sufficient for office and other casual tasks but high level gaming and HD video editing for example could be limited by the CPU performance.
Intel Core 2 Duo T8300
► remove from comparisonThe Intel Core 2 Duo T8300 was at the time of announcement a fast dual-core CPU for laptops with 3 MB level 2 cache. It is based on the Penryn core with all features enabled (but without the full 6MB level 2 cache). The later announced Core 2 Duo P7450 was cheaper and used less power.
Intel Core 2 Duo SL9400
► remove from comparison
The Core 2 Duo SL9400 is a power saving low voltage CPU for thin and light laptops. It offers a good performance for the 1.86 GHz clock rate, as it features the full 6 MB level 2 cache of the used Penryn core.
Benchmarks
Average Benchmarks Intel Core 2 Duo T6400 → 100% n=11
Average Benchmarks Intel Core 2 Duo T8300 → 120% n=11
Average Benchmarks Intel Core 2 Duo SL9400 → 97% n=11

* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation