I currently have an Intel Core i7 rig with 3x2Gb of Patriot Viper 1600MHz memory and Windows 7 64-bit. The exact model of memory is no longer available for a perfect match and this Corsair XMS3 was the closest match with the same 9-9-9-24 timings at 1.65v and up to 1600MHz rated. I don't use the XMP so I will not rate this feature.
I placed an order on a Monday afternoon, it was dispatched on Tuesday morning and arrived on Thursday morning direct from Amazon with super saver delivery. That is impressive by any standards! The package was small enough to fit through my letterbox and arrived in perfect condition.
I opened my case and installed the RAM into my Gigabyte X58A-UD3R motherboard DIMM slots in 5 minutes and so I now have two sets of triple channel memory or 6x2Gb = 12Gb. The BIOS and Windows 7 64-bit (note that 32-bit can only use 4Gb of memory) recognised the extra memory right away and the system booted up first time with no obvious issues so far. For the hardcore gamers out there, this did not appear to impact my overclock but has increased my temperatures by up to 5% with the memory controller on the CPU working harder to address all the channels.
Overall, I am pretty pleased with this memory, the performance is more than enough for current games and the price is good (other sites are cheaper but you pay more for delivery). Thanks Amazon.