Memory timmings

Question

I just upgraded my CPU to the AMD Phenom 9850. CPUZ shows my memory running at 400mhz. I manually set the timmimgs to 2.1v, 5-5-5-15-26, 2t command rate, fsb 1:2. Orthos tests ran great. I then went back to the bios and set the fsb to 1:2.66 and made sure the timings were correct and they were 5-7-7-27-27 so I set them back to 5-5-5-15-26, re booted and ran Orthos. Orthos gave me a red Halt screen so I rebooted and changed the fsb back to 1:2 and the speed is back to 400mhz. How do I get this memory to run at 1066?

Answer 1

What Bas is saying is, that you have to "play around" with settings a bit. Keep the following things in mind when doing this:
- the lower the latencies, the harder it gets to push up memory-clock speed;
- the higher you set memory clock, the more you should increase mem-voltage (keep in mind that increasing mem-voltage may damage the dimms. But as long as you stay within specs, you should be fine);
- be aware that a higher clock doesn't necessarily lead to better performance. Low latencies are often preferable.
Just play around a bit. Try to get the system stable first and write down all the timings. From there, start increasing some things and be aware that you should decrease something else then (higher clock <=> lower latencies).
But first thing's first: get it stable!
You got the right bios - your cpu is supported since 1.4, which is the latest version. So, leave bios alone. Don't go doing stupid things as re-flashing... that won't do anything.