I have been confused of late of all this talk about different types of RAM, their timings, voltages, speeds, latency. I don't really understand what people are talking about. I'm looking at newegg.com for a new P67/2600k (or is it P55 for sandy bridge?) build, and see the choices:G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600mhz (PC3 12800) Latency: 7Timing: 7-8-7-24 (whatever that means!!!)vs.G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2000mhzLatency: 9Timing: 9-10-9-28I read on most of the hardware boards "look to see what the mother board will support." However, I'm not sure even whats the best motherboard for an overclocked P55 system- there's quite a few choices in a range of prices. Is most expensive the best? Are people leaning toward the Asus P8P67 for a reason?-

I have been confused of late of all this talk about different types of RAM, their timings, voltages, speeds, latency. I don't really understand what people are talking about. I'm looking at newegg.com for a new P67/2600k (or is it P55 for sandy bridge?) build, and see the choices:G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600mhz (PC3 12800) Latency: 7Timing: 7-8-7-24 (whatever that means!!!)vs.G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2000mhzLatency: 9Timing: 9-10-9-28I read on most of the hardware boards "look to see what the mother board will support." However, I'm not sure even whats the best motherboard for an overclocked P55 system- there's quite a few choices in a range of prices. Is most expensive the best? Are people leaning toward the Asus P8P67 for a reason?-

Its p67 not P55 I just built my first computer and don't understand timings

NewbieThis explains it all : http://en.wikipedia.org/wiki/DDR3_SDRAM.Basically your 1600MHz RAM has a CAS latency of (7/800)*1000 = 8.75 nano seconds andyour 2000Mhz RAM has a latency of (9/1000)*1000 = 9 nano seconds.So there is less of a delay in the 1600 MHz RAM and it would be considered 'faster'.There may be other factors that can affect the RAM performance and hence its overall speed.RegardsPeterH