OCZ PC2-6400 SLI-Ready Edition OCZ2N 800SR2GK

Verdict: A fast PC2-6400 kit, but EPP compatibility pushes up the price.

Most of the RAM in this month's Labs test is compatible with EPP (Enhanced Performance Profiles), which involves programming enhanced performance data into the RAM's SPD chip in the factory.

As the name suggests, compatibility with EPP - also called SLI memory - is the main selling point of this range of memory, so much so that the DIMMs sport Nvidia SLI logos. Quite what DDR2 RAM has to do with Nvidia's Scalable Link Interface for graphics cards is anybody's guess, but that's a separate issue.

Our test motherboard, based around an Intel chipset, doesn't support EPP - for that you need a board based around a compatible Nvidia chipset. However this doesn't mean that we couldn't have fun with the OCZ. With the voltage set to 2.4V, we raised the frequency from 800MHz to 970MHz, retaining the RAM's tight latency timings of 4-4-4-12 intact. Slackening these timings to 6-6-6-18 was just as productive, providing another 150MHz of overclocking headroom.

With a price tag of only £84, this OCZ kit is excellent value for money. However, Corsair's XMS2 PC2-6400 kit, while not supporting EPP, is better value for money if you're on a budget.