Originally Posted by aambrozai
Okay, I did a cross check with my old memory modules. Here is what I found:
OCZ Platinum DDR PC6400 (800MHz) memory modules: at 800MHz I get 5-5-5-15. at 750MHz I still get only 5-5-5-15. What's the problem with that? The memory modules are 4-4-4-15!!!
Kingston DDR PC8500 (1066MHz) memory modules: at 975MHz (that is the most I can get) I get 5-7-7-22. At 800MHz I get 5-5-5-18. At 750MHz I get 5-5-5-18 still... And the modules are 5-5-5-15!!!
It seems my motherboard uses memory slower that it should be, for some reason...
There is no problem. Nearly all memory are programmed to JEDEC standard timings/voltages so they can boot up on all motherboards without problems. Any timings that are non-standard have to be manually set. Some memory will have custom settings programmed into EPP or XMP but needs a mobo that supports it to boot with those settings.
So to be clear, you need to set everything manually. Boot into BIOS, press Ctrl+F1 and you'll get the hidden timing options in M.I.T. like this: http://www.overclockersclub.com/revi.../images/89.htm
If you want to run 1066 set FSB to 320.
Go into M.I.T. and set:
System Memory Multiplier 3.33 (320x3.33=1066)
DRAM Timing Selectable Manual
CAS Latency Time 5
Dram RAS# to CAS# Delay 5
Dram RAS# Precharge Delay 5
Precharge Delay (tRAS) 15
ACT to ACT Delay (tRRD) Auto
Rank Write to READ Delay Auto
Write to Precharge Delay Auto
Refresh to ACT Delay Auto
Read to Precharge Delay Auto
tRD Phase Adjustment Auto
System Voltage Control Manual
DDR2 OverVoltage Control +0.4V
EDIT: And if you want to learn more: http://forums.tweaktown.com/gigabyte...t-vs-bios.html