Hi everyone, well for some time ive wanted to buy an ASUS P6X58D-E and some new memory sticks, but i really dont understand how to choose the right ones for the mobo. I mean the mobo says that it supports memory slots 6x240 pin and the memory standard is DDR3 2000 (O.C)/1600/1333/1066, but i have no idea what that means. I was going to buy the Kingston Hyper-X 6Gb 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) but i dont know if it works with the mobo or not. I also noticed that the ones i want have cas latency 9 and cost 198 (Newegg) and the same ones with cas latency 8 cost 206, thats another thing i dont undestand. Thanks for youre support.
The RAM PC312800 will work on the ASUS P6X58D-E. You can see it is DDR3 1600 and the MoBo supports 1600 speed.
It is recommended to buy 3 sticks of that RAM ( or buy 3 sticks of 2Gb) to utilize the MoBo's Tri-channel mode.
RAM with smaller latency is better and will work faster.
DDR3 2000 (O.C)/1600/1333/1066 simply means that the motherboard supports DDR3 1600MHz, 1333MHz and 1066MHz speeds without needing to overclock the processor, however to get to 2000MHz you will need to overclock the CPU. There are six slots in the motherboard, and it runs in triple channel, i.e. you run a multiple of three sticks in the motherboard simultaneously.
That Kingston Hyper-X 6GB kit should be fine, PC3-12800 = max transfer rate of 12,800 MB/s, 1600MHz speed. Your motherboard will run it at 1066MHz default however, you will need to change some settings to get it running at 1600MHz, although TBH there isn't a noticeable difference. Also, the CL7, CL8 and CL9 simply refer to latencies. The greater the latency, the longer the time it takes for the CPU to relay information to the RAM and back. However, the difference between CL8 and CL9 isn't visibly noticeable, apart from benchmarks. However, for $8, you might as well pay for lower latencies if you do get into overclocking/benchmarking etc.