Dear all,
two weeks ago i changed my Mainboard from ASUS M2V (Chipset VIA K8T89) into ASUS M4A78 (Chipset AMD 770). With my old configuration my G-Skill memory worked quite fine. Timings were correct out of the box: 4-4-4-12. On the old Board i only had installed one 4 GB Kit (2*2GB) - G.SKill 4GB Kit DDR2 PC2-6400 (F2-6400CL4D-4GBPK) CL4
For the new board i bought another kit of exactly same modules - so now i have 4 * 2GB. After putting everyting together - i couldn?t even start and get into the bios. Just a black screen and many red lights.... After searching hours in the internet i tried it with exchanging the memory modules. I removed 2 Modules - no change, then i removed another one but also with only one module I couldn?t start.
Finally i replaced the G-Skills by a 10 EUR MDT Module (MDT 1GB DDR2 PC2-6400 (M924-800-16) CL5) and got into the bios without problems. Then i immediately replaced the MDT by the 4 * G.Skills and could finally boot with the 4 G.Skill Modules !?! Whyever !?
Although the G.Skill Modules are officially supported by the M4A78 they were only identified with 5-5-5-15 Timings. (so from timings-point of view the board maybe didn?t realize i changed from 1 GB 5-5-5-515 to 4*2 GB 4-4-4-12) The Problem is that my system in running very unstable and I have got a 10% lower CPU score at 3D Mark – although I didn?t change anything but the new mainboard and double the RAM modules. I guess it?s due to wrong figures somewhere below.
Unfortnately beside from the 4-4-4-12 related words below I have no idea what it is and what number to choose there –so i left it auto.
Please help me to find the correct settings for the red “Auto-figures” below.
THX in advance and Best regards,
Sven
Mem. Clock Value 400 Mhz
Memory Voltage 2,1 V (correct ?)
DRAM Tim. Mode DCT0
CAS Latency (CL) 4 CLK
TRCD 4 CLK
TRP 4 CLK
tRTP Auto (2-4 / 3-5) ?
TRAS 12 CLK
TRC Auto (11/12/13/14/15/16/17/18/19) - CPU-Z shows for EPP should be 36 !?)
tWR Auto (3/4/5/6) ?
TRRD Auto (2/3/4/5) ?
tRWTTO Auto (2/3/4/5/6/7/8/9) ?
tWRRD Auto (0/1/2/3) ?
tWTR Auto (1/2/3) ?
tWRWR Auto (1/2/3) ?
tRDRD Auto (2/3/4/5) ?
tRFC0 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
tRFC1 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
tRFC2 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
tRFC3 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
two weeks ago i changed my Mainboard from ASUS M2V (Chipset VIA K8T89) into ASUS M4A78 (Chipset AMD 770). With my old configuration my G-Skill memory worked quite fine. Timings were correct out of the box: 4-4-4-12. On the old Board i only had installed one 4 GB Kit (2*2GB) - G.SKill 4GB Kit DDR2 PC2-6400 (F2-6400CL4D-4GBPK) CL4
For the new board i bought another kit of exactly same modules - so now i have 4 * 2GB. After putting everyting together - i couldn?t even start and get into the bios. Just a black screen and many red lights.... After searching hours in the internet i tried it with exchanging the memory modules. I removed 2 Modules - no change, then i removed another one but also with only one module I couldn?t start.
Finally i replaced the G-Skills by a 10 EUR MDT Module (MDT 1GB DDR2 PC2-6400 (M924-800-16) CL5) and got into the bios without problems. Then i immediately replaced the MDT by the 4 * G.Skills and could finally boot with the 4 G.Skill Modules !?! Whyever !?
Although the G.Skill Modules are officially supported by the M4A78 they were only identified with 5-5-5-15 Timings. (so from timings-point of view the board maybe didn?t realize i changed from 1 GB 5-5-5-515 to 4*2 GB 4-4-4-12) The Problem is that my system in running very unstable and I have got a 10% lower CPU score at 3D Mark – although I didn?t change anything but the new mainboard and double the RAM modules. I guess it?s due to wrong figures somewhere below.
Unfortnately beside from the 4-4-4-12 related words below I have no idea what it is and what number to choose there –so i left it auto.
Please help me to find the correct settings for the red “Auto-figures” below.
THX in advance and Best regards,
Sven
Mem. Clock Value 400 Mhz
Memory Voltage 2,1 V (correct ?)
DRAM Tim. Mode DCT0
CAS Latency (CL) 4 CLK
TRCD 4 CLK
TRP 4 CLK
tRTP Auto (2-4 / 3-5) ?
TRAS 12 CLK
TRC Auto (11/12/13/14/15/16/17/18/19) - CPU-Z shows for EPP should be 36 !?)
tWR Auto (3/4/5/6) ?
TRRD Auto (2/3/4/5) ?
tRWTTO Auto (2/3/4/5/6/7/8/9) ?
tWRRD Auto (0/1/2/3) ?
tWTR Auto (1/2/3) ?
tWRWR Auto (1/2/3) ?
tRDRD Auto (2/3/4/5) ?
tRFC0 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
tRFC1 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
tRFC2 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
tRFC3 Auto (75ns / 105ns / 127,5ns / 327,5ns) ?
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