Nelviticus
Programmer
Hi there, I'm just wondering how to configure my motherboard to run my RAM at optimal settings. I have heard that if you leave it in 'auto' mode it uses very conservative timings.
I have four 1GB sticks of Corsair XMS2-6400 CL5, which apparently "has been verified to operate at 800MHz at the low latencies of 5-5-5-12-T1".
My motherboard is an Asus P5B. In the 'Northbridge' settings there is an option to 'Configure DRAM timing by SPD', which is normally set to 'enabled'. If I set it to 'disabled' I get access to a load of extra settings as follows (numbers show what they're set to by default, with the allowable ranges in brackets):
DRAM CAS# latency: 5 (3-6)
DRAM RAS# to CAS# delay: 6 DRAM clocks (2-6)
DRAM RAS# precharge: 6 DRAM clocks (2-6)
DRAM RAS# activate to precharge: 15 DRAM clocks (4-18)
DRAM write recovery time: 6 DRAM clocks (2-6)
DRAM TRFC: 42 DRAM clocks (20, 25, 30, 35 or 42)
DRAM TRRD: 10 (0-15)
Rank write to read delay: 10 (0-31)
Read to precharge delay: 10 (0-15)
Write to precharge delay: 10 (0-31)
I also have a setting called 'Static read control' which can be Auto, Disable, Fast or Faster.
Any idea what I should set all these values to so that my RAM runs at optimal speed? I am not interested in over-clocking it.
Thanks
Nelviticus
I have four 1GB sticks of Corsair XMS2-6400 CL5, which apparently "has been verified to operate at 800MHz at the low latencies of 5-5-5-12-T1".
My motherboard is an Asus P5B. In the 'Northbridge' settings there is an option to 'Configure DRAM timing by SPD', which is normally set to 'enabled'. If I set it to 'disabled' I get access to a load of extra settings as follows (numbers show what they're set to by default, with the allowable ranges in brackets):
DRAM CAS# latency: 5 (3-6)
DRAM RAS# to CAS# delay: 6 DRAM clocks (2-6)
DRAM RAS# precharge: 6 DRAM clocks (2-6)
DRAM RAS# activate to precharge: 15 DRAM clocks (4-18)
DRAM write recovery time: 6 DRAM clocks (2-6)
DRAM TRFC: 42 DRAM clocks (20, 25, 30, 35 or 42)
DRAM TRRD: 10 (0-15)
Rank write to read delay: 10 (0-31)
Read to precharge delay: 10 (0-15)
Write to precharge delay: 10 (0-31)
I also have a setting called 'Static read control' which can be Auto, Disable, Fast or Faster.
Any idea what I should set all these values to so that my RAM runs at optimal speed? I am not interested in over-clocking it.
Thanks
Nelviticus