Mushkin Redline XP4000 is most definitely very high speed, high quality double data rate memory. When combined in a dual channel kit, with the usage of a high powered DFI LANParty motherboard such as the DFI SLI-DR this memory will scream to heights previously unfathomable. What I found truly remarkable about the Mushkin Redline XP4000 DDR 1GB memory kit, was the ability to not o­nly reach very high front side bus speeds, but at incredibly tight timings as well. With rated timings of 2-2-2-6 at 500MHz DDR - the memory is already very fast. As evidenced by my benchmark testing, this memory will attain even higher scaling - as you can see by the results posted running DDR550 at CAS-TRCD-TRP-TRAS memory timings of 1.5-2-2-5.