understanding terms

[shannon853]

using cpu-z version 1.42 i get the following in the memory areas of the program. type:ddr2, channels # dual, size 2048. ok so far. dram frequency shows 333.9 fsb:dram 4:5 cas# latency (cl) 5.0 clocks, cas#lacency (trcd) 5.0 clocks, ras# to cas#delay (trcd) 5 clocks, ras#recycling (trp) 5 clocks, cycle time (tras) 15 clocks, bank cycle time (trc) 21 clocks. now when i click the spd tab i get for slot # 1 and slot #3 the following information. ddr2, module size 1024, max bandwidth pc2-6400 (400), manufacturer, corsair, part number cm2x1024-6400c4,correction none, spd ext, epp, week.year, 23, 06. not the timings table.

jedec 1 jedec 2 epp1

frequency 270 mhz 400 mhz 400mhz

cas 4 5 4

ras to cas 4 5 4

ras precharge 4 5 4

tras 13 18 12

trc 15 22 22

command rate 2t

voltage 1.8v 1.8v 2.1v

 

 

so, what is the machine bios actually running the ram at and on this mother board, i get in booting the ram showing as 5400 not 6400. what should the bios version 2004 be set to. the bios is set for spd but it is not showing as the 6400 as it should be. from the table listed in cpu-z what should be read and used, jedec 1 2 or epp 1? i would have thought the bios would pick up the spd and set the ram correctly? ram guy can you please set me and i know other on the right course? thanks.

[bigbuck08]

Update to the latest BIOS if you dont have them. Then load BIOS defaults and set the following settings:

 

DRAM Clock: 800MHz

SDRAM CAS Latency: 4T

SDRAM RAS to CAS Delay (tRCD): 4T

SDRAM Row Precharge (tRP): 4T

SDRAM Active to Precharge Delay (tRAS): 12T

DRAM Voltage: 2.1v

 

The settings under the Memory tab in CPU-Z are what you are currently running at.