....................................................................................... Bandwidth
........................................................... Latency............... Int........... FP
CAS Latency (3 / 2) ................................ -7.4 ................. 7.4 .......... 7.7
CAS Delay (3 / 2) ................................... -0.3 ................. 5.9 .......... 7.7
RAS Precharge (3 / 2) ............................. -0.1 ................. 4.4 .......... 5.3
Pipeline Leadoff Timing (1 / 0) .................. -7.5 ................. 3.3 .......... 4.0
Leadoff Command Timing (4 / 3) ............... -7.5 ................. 1.1 .......... 0.3
Refresh Rate (15.6 / 249.6) ...................... -0.7 ................. 0.4 .......... 0.7
The numbers in ( ) are your choices in clock cycles or microseconds for refresh rate.
The latency and bandwidth numbers are % from default/most conservative.
The numbers are mostly additive with the exception of latency where there is a 2 out of 3 additivity between CAS Latency/Pipeline Leadoff Timing/Leadoff Command Timing. Cumulatively you can improve latency by about 16% and bandwidth by about 24%. NOTE: not all memory is up to the rigors of all these settings.
The testing was done on an Abit BM6 (BX chipset), Celeron 366@550, 64M PC100 SDRAM using SiSoft sandra 2000 memory benchmark and Roelof J. Engelbrecht's latency measurement program. At least four consistent runs were obtained for each measurement.
These tweaks are accessed through your bios or programs like Wpcredit, agp_info, or wbxtune. The agp_info and wbxtune programs are for the BX chipset and windows 9x, Wpcredit will work under any win32 - x86 platform, there are plugins for many chipsets available at H-Oda's site. Even without a plugin Wpcredit can access the registers and with a little trial and error or detailed spec sheets for your chipset you might be able to figure it out.
........................................................... Latency............... Int........... FP
CAS Latency (3 / 2) ................................ -7.4 ................. 7.4 .......... 7.7
CAS Delay (3 / 2) ................................... -0.3 ................. 5.9 .......... 7.7
RAS Precharge (3 / 2) ............................. -0.1 ................. 4.4 .......... 5.3
Pipeline Leadoff Timing (1 / 0) .................. -7.5 ................. 3.3 .......... 4.0
Leadoff Command Timing (4 / 3) ............... -7.5 ................. 1.1 .......... 0.3
Refresh Rate (15.6 / 249.6) ...................... -0.7 ................. 0.4 .......... 0.7
The numbers in ( ) are your choices in clock cycles or microseconds for refresh rate.
The latency and bandwidth numbers are % from default/most conservative.
The numbers are mostly additive with the exception of latency where there is a 2 out of 3 additivity between CAS Latency/Pipeline Leadoff Timing/Leadoff Command Timing. Cumulatively you can improve latency by about 16% and bandwidth by about 24%. NOTE: not all memory is up to the rigors of all these settings.
The testing was done on an Abit BM6 (BX chipset), Celeron 366@550, 64M PC100 SDRAM using SiSoft sandra 2000 memory benchmark and Roelof J. Engelbrecht's latency measurement program. At least four consistent runs were obtained for each measurement.
These tweaks are accessed through your bios or programs like Wpcredit, agp_info, or wbxtune. The agp_info and wbxtune programs are for the BX chipset and windows 9x, Wpcredit will work under any win32 - x86 platform, there are plugins for many chipsets available at H-Oda's site. Even without a plugin Wpcredit can access the registers and with a little trial and error or detailed spec sheets for your chipset you might be able to figure it out.
I already have my RAM maxed out though.
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