PDA

View Full Version : Tweaking RAM voltages and timings for higher OC



DillingerEscapePlan
18-10-2005, 10:55 PM
I looked at my bios and the memory timings are such:

DDR Timing Setting by [manual]
CAS# [CL=2.5]
Row Cycle Time (trc) [12bus clocks]
Row Refresh Cyc Time (trfc) [14 bus clocks]
RAS# to CAS Delay (trcd)[4 bus clocks]
Row to Row Delay (trrd)[2 bus clocks]
Min RAS# Active Time (tras)[8 bus clocks]
Row Precharge Time (trp) [4 bus clocks]
Write Recovery Time (twr)[3 bus clocks]
Write to Read Delay (twrt)[2 bus clocks]
Read to Write Delay (trwt)[4 bus clocks]
Refresh Period (tref) [2x3120 cycles]
1T/2T Dram Timings [auto]

With the hardware in my sig added to the above settings,
which values do I need to modify in order to "loosen" them so I can give them more volts and go for the higher OC?

Thanks!

vapo
19-10-2005, 12:16 AM
All of them will have a small impact on performance but to loosen them I would try increasing CAS to 3:

The main ones out of that list are:

CAS# [CL=2.5]
RAS# to CAS Delay (trcd)[4 bus clocks]
Row Precharge Time (trp) [4 bus clocks]
Min RAS# Active Time (tras)[8 bus clocks]
1T/2T Dram Timings [auto]

Switching from 1T to 2T may give you some more headroom for overclocking as well. There's only really a small loss in performance that's measurable in synthetic benchmarks.