"The testing results certainly indicate that the new 4GB Mushkin XP2-8500 Ascent memory modules are worthy competitors in the DDR2 arena...we feel the design is excellent and should provide excellent cooling when pushing this or other Ascent series meroy kits to their maximum performance level. When it comes to recommending this two fine 4GB DDR2 memory kits we feel it's the best performing 4GB kit we've seen to date! If you`re planning on sticking with DDR2 for a while and need 4GB then we can heartily recommend the 4GB Mushkin XP2-8500 Ascent kit."(click to view in new window)