Techgage posted a review of Mushkins latest high-end kit, which is also the fastest 2x2GB kit on the market

Mushkin is the only memory company right now to offer 4GB extreme performance kits, with their top-end offering on our test bench today. Despite the fact that it already has high stock speeds, we were surprised to find out that it still had a lot of overclocking headroom..

Mushkin 4GB XP2-8500 Review