JML Posted January 21, 2006 Share Posted January 21, 2006 I am trying to make sure I am setting the right items and need help. The timings for my RAM are: DRAM Clock: 200 MHz DRAM Voltage: 2.7X Volts SDRAM CAS Latency: 2T (2.5 on AMD platform) SDRAM RAS to CAS Delay (tRCD): 3T SDRAM Row Precharge (tRP): 3T SDRAM Active to Precharge Delay (tRAS): 6T SDRAM Bank Interleave: 4 Bank When I go in to change the settings I get the list below. What do I need to change? DRAM Clock Set to Auto CAS Latency Time Set to 2.5 Row Cycle Time Set to Auto Row Refresh Cycle Time Set to Auto RAS# to CAS# Delay Set to 3 clocks RAS# to RAS# Delay Set to 4 clocks Min. RAS# Active Time Set to 6 clocks RAS# Precharge Time Set to 3 clocks Write Recovery Time Set to Auto Write to Read Delay Set to Auto Read to Write Delay Set to Auto DRAM Command Rate Set to Auto Burst Length Set to 4 beats Bank Interlacing Set to Disabled 32 bit DRAM Memory Hole Set to Auto Bottom of 32-bit (31:24) IO Set to DO MTRR Mapping Mode Set to Disable Thanks for the help. I really appreciate it. Link to comment Share on other sites More sharing options...
leeghoofd Posted January 21, 2006 Share Posted January 21, 2006 you can look at this screenshot eg This is for my Corsair XL ram 2-2-2-5 1T ( still awaiting Corsair 3500LLPro to appear in Belgium :( ) http://users.pandora.be/OAP/abitfattimings.JPG DRAM Clock Set to Auto CAS Latency Time Set to 2.5 Row Cycle Time Set to Auto -- 10-12 lower is better Row Refresh Cycle Time Set to Auto -- 12-14 lower is better : previous +2 RAS# to CAS# Delay Set to 3 clocks RAS# to RAS# Delay Set to 4 clocks -- 3 - 4 lower is better Min. RAS# Active Time Set to 6 clocks -- 6 - 7 lower is better RAS# Precharge Time Set to 3 clocks Write Recovery Time Set to Auto -- 3 Write to Read Delay Set to Auto -- 2 - 3 lower is better Read to Write Delay Set to Auto -- 2 -4 DRAM Command Rate Set to Auto -- 1T-2T lower is better Burst Length Set to 4 beats Bank Interlacing Set to Disabled 32 bit DRAM Memory Hole Set to Auto Bottom of 32-bit (31:24) IO Set to DO MTRR Mapping Mode Set to Disable Also make sure the ram gets enough voltage so at least 2.7 volts, my AV8 tended to overvolt a bit so I had to leave it at 2.6 while it gave 2.7 volts , have a look at that first. Test ya ram with eg memtest in dos or via SuperPI in WindowsXP, do also one setting at a time, test it and change another one, just to avoid being lost in space. With eg A64 tweaker you can see all the setings ya bios made. so you can compare with the settings I proposed. Good luck. Prefer stability above speed mate and the system nor the ram will let ya down :) Link to comment Share on other sites More sharing options...
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