F3-12800CL9D-4GBNQ unstable at 1600 on GA-MA770T-UD3P

[Lacehim]

Memory: F3-12800CL9D-4GBNQ
Motherboard: GA-MA770T-UD3P (F2 bios)
CPU: AMD Phenom II 550BE (Unlocked to 4 Cores stable)

My Motherboard is running my memory on Auto at 1333 but I do believe it can run at 1600? I have tried changing a few settings in the BIOS but I can't get it stable. Could anyone advise me what settings I should be running this memory at with this motherboard.

Also what's the benefit of running at 1600 over the motherboard default of 1333.

Thanks in advance for your help.

Lacehim

[GSKILL TECH]

Set memory frequency to 1600. For memory timings, make sure they are set at tCL 9 - tRCD 9 - tRP 9 - tRAS 24 - CMD 2. For memory voltage make sure it is set to 1.65V since the default is 1.5V and is only good for DDR3-1333. Once you make these changes, your computer should be running smoothly.

Thank you
GSKILL SUPPORT

[phildaman46]

Same problem

I have the same stability problem with my computer with the same hardware.

Memory: F3-12800CL9D-4GBNQ
Motherboard: GA-MA770T-UD3P (with F3 Bios)
CPU: AMD Phenom II 550BE

I manually set the memory timings to the rated values with the memory voltage at 1.640V and it is still unstable at 1600. It would run fine for a bit but then I would randomly get a blue screen in Windows or the computer would lockup.

[GSKILL TECH]

Increase HT Voltage to 1.4V. What do you timings and advanced timings look like? List them and I can make sure they are set properly.

Thank you
GSKILL SUPPORT

[phildaman46]

From Bios:

DCTs Mode Unganged
Cas# latency 9T
RAS to CAS R/W Delay 9T
ROW Precharge Time 9T
Minimum RAS Active Time 24T
1T/2T Command Timing 2T
TwTr Command Delay 5T
Trfc0 for DIMM1 110ns
Trfc1 for DIMM3 110ns
Write Recovery Time 10T
Precharge Time 5T
Row Cycle Time 33T
RAS to RAS Delay 4T
Bank interleaving Enabled
Channel interleave Enabled

Is SB/HT Voltage control in Bios the one to be changed to 1.4V? I want to make sure.

[GSKILL TECH]

Trfc0 for DIMM 1 and Trfc1 for DIMM3 set them to 160ns. Yes, SB/HT Voltage Control should be 1.40V.

Thank you
GSKILL SUPPORT

[phildaman46]

Computer still locks up at 1600. Once when coming out of sleep mode in Windows Vista and just today it locked up in Ubuntu when surfing the web.

[Tradesman]

You may have to OC your CPU a tad to run stable at 1600...or....loosen the timings maybe RAS Active to 27

[phildaman46]

Anything here I should change?

Current Bios Settings:

Memory Clock x8.00 @1600MHz
DRAM Voltage Control @ 1.640v
DDR VTT Voltage Control Normal @ 0.900v
NB Voltage Control Normal @ 1.100v
SB/HT Voltage Control @ 1.400v
NB PCIE Voltage Control Normal @ 1.800v
CPU NB VID Control Normal
CPU Voltage Control Normal
Normal CPU Vcore @ 1.3500v

[GSKILL TECH]

Try DDR VTT Voltage Control @ 1.000V and NB Voltage Control @ 1.200V.

Thank you
GSKILL SUPPORT

[jbonales]

Lace did their suggestions end up being a winning combination? Did everything work out ok?

[Tradesman]

Any new word on progress?

[harrysun]

Hi, I'm in the same situation. I got Prime95 working for more then 10 hours with following configuration:

GA-M770T-UD3P (BIOS F2)

CPU Clock Ratio 3240Mhz
CPU NorthBridge Freq. 2160Mhz
CPU Host Clock Control Manual
CPU Frequency(MHz) 240
PCIE Clock(MHz) Auto
HT Link Frequency Auto
Set Memory Clock Manual
Memory Clock x6,66
DCTs Mode Unganged
DRAM Configuration >>
System Voltage Control Manual
CPU NB VID Control +0,050V
CPU Voltage Control +0,125V
Normal CPU Vcore 1,3250V
DRAM Voltage control 1,620V
DDR VTT Voltage Control 0,950V
NB Voltage Control 1,200V
SB/HT Voltage Control 1,400V
NB PCIE Voltage Control Normal


DRAM Configuration G.Skill F3-12800CL9-2GBNQ 2GB DIMM DDR3 PC3-12800U DDR3-1600 (9-9-9-24 4-33-10-5)
DDR Timing Items Manual
CAS# latency 9T
RAS to CAS R/W Delay 9T
Row Precharge Time 9T
Minimum RAS Active Time 24T
1T/2T Command Timing 2T
TwTr Command Delay 5T
Trfc0 for DIMM1 160ns
Trfc2 for DIMM2 160ns
Trfc1 for DIMM3 160ns
Trfc3 for DIMM4 160ns
Write Recovery Time 10T
Precharge Time 5T
Row Cycle Time 33T
RAS to RAS Delay 4T

I've found a test case with freeze the system. I put CPU-Z, GPU-Z, SpeedFan, Everest Ultimate Edition, SuperPI togehter with a CMD-Skript "shutdown -t 30 -r" in the autostart group in Windows XP SP3. AutoLogon is enabled and Windows restarts every 30 seconds. In this tast case after 3 reboots the system freeze starting the autostart applications.

I'm not sure if the applications are buggy or the system is unstable. It would be interesting to get feedback from other users.

cu,
harrysun

[ocer]

Please I need some help, I have the same configuration and can't get my system to run stable at 1600MHz and Prime95 seems to fail all the time. My setup is as below:

CPU: AM3 720
MB: MA770T-UD3P
Memory: G.Skill F3-12800CL9-2GBNQ 2GB DIMM DDR3 PC3-12800U DDR3-1600 (9-9-9-24 4-33-10-5)

CPU Clock Ratio 2800MHz
CPU NorthBridge Freq. 2000Mhz
CPU Host Clock Control Auto
CPU Frequency(MHz) 200
PCIE Clock(MHz) Auto
HT Link Frequency Auto
Set Memory Clock Manual
Memory Clock x8.00
DCTs Mode Unganged
DRAM Configuration >>
System Voltage Control AUTO
CPU NB VID Control AUTO
CPU Voltage Control AUTO
Normal CPU Vcore AUTO
DRAM Voltage control 1.6V
DDR VTT Voltage Control AUTO
NB Voltage Control AUTO
SB/HT Voltage Control AUTO
NB PCIE Voltage Control AUTO


DRAM Configuration:
DDR Timing Items Manual
CAS# latency 9T
RAS to CAS R/W Delay 9T
Row Precharge Time 9T
Minimum RAS Active Time 24T
1T/2T Command Timing 2T
TwTr Command Delay 6T
Trfc0 for DIMM1 110ns
Trfc2 for DIMM2 90ns
Trfc1 for DIMM3 110ns
Trfc3 for DIMM4 90ns
Write Recovery Time 12T
Precharge Time 6T
Row Cycle Time 40T
RAS to RAS Delay 5T

Any suggestions on the setup? Thanks

[GSKILL TECH]

Increase DRAM Voltage to 1.60V. SB/HT Voltage to 1.40V.

Trfc0-3 should be set to 160ns. Write Recovery Time should be able to operate at 10T.

Save and exit.

Thank you
GSKILL SUPPORT