Comparison of DDR2 High Frequency and Tight Timings
Comparison of DDR2 High Frequency and Tight Timings
First time setting CPU overclocker.
I recently acquired a used GIGABYTE P43-ES3G and set the FSB to 412 MHz on my Xeon E5440 at 1.235 volts. It's been running through P95 overnight without any issues, so I'm planning to upgrade memory next.
My RAM operates at 412 MHz (824 effective) with timings 5-5-5-15 @ 1.8v.
I can push my memory to run at 478 (956 effective) using timings 7-8-8-18 @ 1.9v.
Heat isn't a concern because the chips have heat spreaders and are being cooled with fans.
When I increase the speed further (500, 533 MHz), I notice some errors in MemTest.
It's a minor jump, so I'm wondering if sticking to stock speeds with tighter timings would be safer, or if the higher frequency more than makes up for the looser timing. I'm not entirely clear on what the timing settings mean.
06yfz450ridr :
are you upping the fsb or simply upping the memory speeds?
I'm turning up the memory speed. FSB stays at 412. It looks like I can get my CPU and memory to run separate clocks.
There's a frequency latch option. Stock is 400 MHz running at 2.0d. To get it at 956 effective, I turn down the frequency latch to 333 MHz at 2.66b.