The memory modules are provided on a green plate with black passive heatsinks (heatspreader) to get lower temperatures, also with higher frequencies and/or higher voltages. This is especially important with these Mushkin modules, because such a high voltage and/or frequency would destroy the DDR2 RAM without a good cooling. Furthermore the test modules comes with EPP (Enhanced Performance Profiles) to get reduced latencies and high frequencies on latest generation motherboards with EPP support.

Here’s another picture of the nice Mushkin XP2-8500 modules …