Which DDR2 is the best for mobo Gigabyte GA-P35-DS3L and cpu Intel Pentium E2160?
MHz?

Get DDR2-800, clock it down to match the CPU frequency, then tighten up on the RAM timings.

Do NOT clock the RAM down, this will only slow your computer down.

The E2160 uses a 800mhz (200x4) buss. DDR2-800 is the correct memory for that system and does not need to be clocked down. Use the default latency settings unless you are buying memory that can tolerate tighter settings otherwise data corruption and/or crashes will occur.

Core 2 Duo 1.86

Outlander is totally wrong AGAIN! He has been pushing this issue for weeks now. For some reason he's got it in his head that a 1:2 CPU:DRAM ratio is optimal..it's NOT!

Your E2160 runs at 200MHz frequency...800MHz is the effective FSB speed due to "quad-pumping". It is a theoretical number. The base frequency of 200MHz is what you should be looking at.

DDR2-800 RAM runs at 400MHz frequency...twice that of the CPU. Once again, 800MHz is the effective speed due to "double-pumping". It is also a theoretical number. Work with the REAL numbers, not the "imagined".

I suggest you overclock your CPU to 266MHz freq (aka 1066MHz FSB) & downclock your RAM to match. In other words, run your RAM at 266MHz (DDR2-533). That way, your CPU:DRAM ratio will be 1:1. And when you downclock the RAM, that will allow you to tighten up on the timings. For instance, if your default timings are 5-5-5 at the default speed (400MHz), you *should* have no problem running the timings at 4-4-4 or possibly 3-3-3 when you underclock the RAM to 266MHz.

This has been discussed numerous times in these forums & in numerous reputable hardware sites. Outland is the only one who doesn't get it. He seems to know his stuff in regards to other issues, but he's built a roadblock in his mind when it comes to optimal CPU/DRAM clocking.

Have a read:

http://www.computing.net/cpus/wwwbo...