Possible solution for some to get rid of "DET RAM" hang
Possible solution for some to eliminate "DET RAM" hang
Over the past few weeks of testing different OC configuations, I've being trying to completely eliminate the odd "DET RAM" hang. It only happends occasionally or some would say it appears when they start their system from a cold boot.
You can skip directly to PART 2 if your system is stable enough to pass hours of OCCT Mix and Prime Blend but still experiencing occasionl odd DET RAM hang during reboot or cold boot
Part I
What most people and I found about DET RAM hang issue is that the occasion for it to appear is related to the value of your FSB set accordingly. Usually people will starting to experience the first sign of DET RAM at around 440 ~ 450 FSB. And becouse everyone's system configurations are not identicle, there is not really a solution for all.
First thing to suggest is to check your CPU Vcore, make sure it's sufficient enough to pass 1hr CPU Prime/OCCT stress test.
Next we look at your NB and FSB voltages. FSB 1.40v bios set should be well enough to pass hours of Blend or Mix stress tests using Prime or OCCT even for the 65nm Q6600 G0 I've been testing with.
1.51v on the NB is a good starting point to troubleshoot the first sign of DET RAM hang, blue screen upon logging to windows, or blue screen/error detected/failure from Prime Blend or OCCT Mix.
As for CPU PLL, leave it at AUTO setting as the motherboard again overvolts in this area as well and AUTO setting will automatically scale with the given Vcore. Yes, auto setting is even enough to stable my 65nm Q6600 G0 at high 465+ FSB setting. If auto setting is good enough for 65nm quad, I believe it should be good enough for all 45nm cpu as they're even much easier to OC with given Vcore/CPU PLL.
Check your current Strap (266, 333, 400) and the ram divider set accordingly. This mobo works fairly poor using FSB 266 as opposed to its P35 chipset mobos. I'd recommend using 333 Strap for best overall system bandwidth. 400 Strap for further stability at high FSB setting but at the cost of overall system bandwidth.
Ram frequency/timings/relative given Vdimm: Make sure your desired given Vdimm is stable enough for its frequency and timings set. 2.12v bios set is a good starting point for OC DDR2-1066 modules as the mobo overvolts by ~0.8v which results in ~2.208v. Again each ram modules behaves differently, usually 5-5-5-15 for primary timings and rest subtimings set to AUTO or manually set to mobo's auto predetermined values are tight enough for daily use.
Part II
By adjusting my PCI-E Frequency from 110 to 112 finally solves the oddity of DET RAM hang or called the "black screen". This explains why no matter how high I've tried to raise the FSB voltage, CPU PLL voltage, SB voltage, loosen timings, higher CPU Vcore and higher Vdimm wouldn't completely eliminate DET RAM hang. If you are currently in the same situation where I was, I highly suggestion you try raising your PCI-E Frequency to a certain frequency that may aid you from getting DET RAM hang. Please note that this area isn't the priority when OC and it should only be overlooked when you're experiencing occasional odd DET RAM hang during reboot or cold boot but yet the system is stable under hours of stress tests.
RAMPAGE FORMULA 0219 BIOS.
Extreme Tweaker
Ai Overclock Tuner : Manual
OC From CPU Level Up : AUTO
CPU Ratio Control : Manual
- Ratio CMOS Setting : 8
FSB Frequency : 465
FSB Strap to North Bridge : 333
PCI-E Frequency: 112 No more DET RAM hang ("Black screen")
DRAM Frequency: DDR2-1116
DRAM Command Rate : 2T
DRAM CLK Skew on Channel A : Normal
DRAM CLK Skew on Channel B : Normal
DRAM Timing Control: Manual
CAS# Latency : 5
RAS# to CAS# Delay : 4 (TRCD)
RAS# Precharge : 4 (TRP)
RAS# ActivateTime : 10 (TRAS) TRAS = TRCD + TRP + 2 (4 + 4 + 2 = 10) For stability, this setting should not be set lower than this given formula.
RAS# to RAS# Delay : 3
Row Refresh Cycle Time : 35 (AUTO = 42)
Write Recovery Time : 6
Read to Precharge Time : 3
Read to Write Delay (S/D) : 8
Write to Read Delay (S) : 3
Write to Read Delay (D) : 5
Read to Read Delay (S) : 4
Read to Read Delay (D) : 6
Write to Write Delay (S) : 4
Write to Write Delay (D) : 6
Write to PRE Delay : 14
Read to PRE Delay : 5
PRE to PRE Delay : 1
ALL PRE to ACT Delay : 5
ALL PRE to REF Delay : 5
DRAM Static Read Control: Disabled
Ai Clock Twister : Stronger
Transaction Booster : Manual
C/P: A1 A2 A3 A4 A5 | B1 B2 B3 B4 B5
LVL: 07 07 07 07 07 | 07 07 07 07 07
Common Performance Level [7]
Pull-In of CHA PH1 Disabled
Pull-In of CHA PH2 Disabled
Pull-In of CHA PH3 Disabled
Pull-In of CHA PH4 Disabled
Pull-In of CHA PH5 Disabled
Pull-In of CHB PH1 Disabled
Pull-In of CHB PH2 Disabled
Pull-In of CHB PH3 Disabled
Pull-In of CHB PH4 Disabled
Pull-In of CHB PH5 Disabled
CPU Voltage : 1.46750 (1.452)
CPU PLL Voltage : AUTO (1.664-1.680)
North Bridge Voltage : 1.65 (1.680) *Note: high 1.65v NB is absolutely needed for hours of stability under Prime mix and OCCT blend stress tests. Using *8 multi Q6600 G0 at high FSB is indeed putting a lot more stress on the NB but also allows the system to gain greater amount of system bandwidth from using *9 multi of the same CPU frequency with relatively lower FSB.
DRAM Voltage : 2.12 (2.208)
FSB Termination Voltage : 1.40 (1.456)
South Bridge Voltage : 1.10 (1.12)
Loadline Calibration : Enabled
CPU GTL Reference : 0.63X
North Bridge GTL Reference : 0.67X
DDR2 Channel A REF Voltage : AUTO
DDR2 Channel B REF Voltage : AUTO
DDR2 Controller REF Voltage : DDR2-REF (1.104)
SB 1.5V Voltage : 1.5 (1.54v)
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
Possible solution for some to eliminate "DET RAM" hang
Possible solution for some to eliminate "DET RAM" hang
Over the past few weeks of testing different OC configuations, I've being trying to completely eliminate the odd "DET RAM" hang. It only happends occasionally or some would say it appears when they start their system from a cold boot.
You can skip directly to PART 2 if your system is stable enough to pass hours of OCCT Mix and Prime Blend but still experiencing occasional odd DET RAM hang issue during reboot or cold boot.
Part I
What most people and I found about DET RAM hang issue is that the occasion for it to appear is related to the value of your FSB set accordingly. Usually people will starting to experience the first sign of DET RAM at around 440 ~ 450 FSB. And becouse everyone's system configurations are not identicle, there is not really a solution for all.
First thing to suggest is to check your CPU Vcore, make sure it's sufficient enough to pass 1hr CPU Prime/OCCT stress test.
Next we look at your NB and FSB voltages. FSB 1.40v bios set should be well enough to pass hours of Blend or Mix stress tests using Prime or OCCT even for the 65nm Q6600 G0 I've been testing with.
1.51v on the NB is a good starting point to troubleshoot the first sign of DET RAM hang, blue screen upon logging to windows, or blue screen/error detected/failure from Prime Blend or OCCT Mix.
As for CPU PLL, leave it at AUTO setting as the motherboard again overvolts in this area as well and AUTO setting will automatically scale with the given Vcore. Yes, auto setting is even enough to stable my 65nm Q6600 G0 at high 465+ FSB setting. If auto setting is good enough for 65nm quad, I believe it should be good enough for all 45nm cpu as they're even much easier to OC with given Vcore/CPU PLL.
Check your current Strap (266, 333, 400) and the ram divider set accordingly. This mobo works fairly poor using FSB 266 as opposed to its P35 chipset mobos. I'd recommend using 333 Strap for best overall system bandwidth. 400 Strap for further stability at high FSB setting but at the cost of overall system bandwidth.
Ram frequency/timings/relative given Vdimm: Make sure your desired given Vdimm is stable enough for its frequency and timings set. 2.12v bios set is a good starting point for OC DDR2-1066 modules as the mobo overvolts by ~0.8v which results in ~2.208v. Again each ram modules behaves differently, usually 5-5-5-15 for primary timings and rest subtimings set to AUTO or manually set to mobo's auto predetermined values are tight enough for daily use.
Part II
By adjusting my PCI-E Frequency from 110 to 112 finally solves the oddity of DET RAM hang or called the "black screen". This explains why no matter how high I've tried to raise the FSB voltage, CPU PLL voltage, SB voltage, loosen timings, higher CPU Vcore and higher Vdimm wouldn't completely eliminate DET RAM hang. If you are currently in the same situation where I was, I highly suggestion you try raising your PCI-E Frequency to a certain frequency that may aid you from getting DET RAM hang. Please note that this area isn't the priority when OC and it should only be overlooked when you're experiencing occasional odd DET RAM hang during reboot or cold boot but yet the system is stable under hours of stress tests.
RAMPAGE FORMULA 0219 BIOS.
Extreme Tweaker
Ai Overclock Tuner : Manual
OC From CPU Level Up : AUTO
CPU Ratio Control : Manual
- Ratio CMOS Setting : 8
FSB Frequency : 465
FSB Strap to North Bridge : 333
PCI-E Frequency: 112 No more DET RAM hang ("Black screen")
DRAM Frequency: DDR2-1116
DRAM Command Rate : 2T
DRAM CLK Skew on Channel A : Normal
DRAM CLK Skew on Channel B : Normal
DRAM Timing Control: Manual
CAS# Latency : 5
RAS# to CAS# Delay : 4 (TRCD)
RAS# Precharge : 4 (TRP)
RAS# ActivateTime : 10 (TRAS) TRAS = TRCD + TRP + 2 (4 + 4 + 2 = 10) For stability, this setting should not be set lower than this given formula.
RAS# to RAS# Delay : 3
Row Refresh Cycle Time : 35 (AUTO = 42)
Write Recovery Time : 6
Read to Precharge Time : 3
Read to Write Delay (S/D) : 8
Write to Read Delay (S) : 3
Write to Read Delay (D) : 5
Read to Read Delay (S) : 4
Read to Read Delay (D) : 6
Write to Write Delay (S) : 4
Write to Write Delay (D) : 6
Write to PRE Delay : 14
Read to PRE Delay : 5
PRE to PRE Delay : 1
ALL PRE to ACT Delay : 5
ALL PRE to REF Delay : 5
DRAM Static Read Control: Disabled
Ai Clock Twister : Stronger
Transaction Booster : Manual
C/P: A1 A2 A3 A4 A5 | B1 B2 B3 B4 B5
LVL: 07 07 07 07 07 | 07 07 07 07 07
Common Performance Level [7]
Pull-In of CHA PH1 Disabled
Pull-In of CHA PH2 Disabled
Pull-In of CHA PH3 Disabled
Pull-In of CHA PH4 Disabled
Pull-In of CHA PH5 Disabled
Pull-In of CHB PH1 Disabled
Pull-In of CHB PH2 Disabled
Pull-In of CHB PH3 Disabled
Pull-In of CHB PH4 Disabled
Pull-In of CHB PH5 Disabled
CPU Voltage : 1.46750 (1.452)
CPU PLL Voltage : AUTO (1.664-1.680)
North Bridge Voltage : 1.65 (1.680) *Note: high 1.65v NB is absolutely needed for hours of stability under Prime mix and OCCT blend stress tests. Using *8 multi Q6600 G0 at high FSB is indeed putting a lot more stress on the NB but also allows the system to gain greater amount of system bandwidth from using *9 multi of the same CPU frequency with relatively lower FSB.
DRAM Voltage : 2.12 (2.208)
FSB Termination Voltage : 1.40 (1.456)
South Bridge Voltage : 1.10 (1.12)
Loadline Calibration : Enabled
CPU GTL Reference : 0.63X
North Bridge GTL Reference : 0.67X
DDR2 Channel A REF Voltage : AUTO
DDR2 Channel B REF Voltage : AUTO
DDR2 Controller REF Voltage : DDR2-REF (1.104)
SB 1.5V Voltage : 1.5 (1.54v)
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled