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Gigabyte GA-P55-UD4 and CMX4GX3M2A1600C9 - no problems


Cooldrive

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I have understood that quite a few people are having problems with CMX4GX3M2A1600C9 and some Gigabyte m/b:s. So....here are the really simple adjustments I did to get a working combination. Maybe it can be of some help to those of you, who have gotten totally confused by all the expert advice in the forum:

 

I have a Gigabyte GA-P55-UD4 m/b with an i5_750 CPU. I placed the memory sticks (2 x 2 Gb) in slots #2 and #4 (#1 is the closest to the CPU-socket). Gigabyte names these slots DDR3_1 and DDR3_3).

 

Then I made some minor adjustments in the BIOS settings (ver. F3):

 

1. In the M.I.T. menu, submenu Adv. mem.settings: Enabled XMP to Profile1

and left System Memory Multiplier and DRAM Timing Selectable on Auto

2. In submenu Adv. volt. settings: Changed DRAM voltage from 1.5V to 1.64V

 

After that I have installed Win7 and XP in a dual boot config and played some demanding games like X3 Terran Conflict. No problems like deadlocks, reboots or stability problems whatsoever for more than a week now....

Windows Experience Index shows a value of 7.7 for memory operations.

 

I am not a RAM expert, so I played it the simple way. Or....maybe I was just lucky?

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  • 2 months later...

Hi Cooldrive,

 

Quote "I have understood that quite a few people are having problems with CMX4GX3M2A1600C9 and some Gigabyte m/b:s. "

 

What the problems you are facing and others?

 

 

 

========================================

 

Gigabyte GA-P55-UD4 m/b with an i5_750 CPU & CMX4GX3M2A1600C9

You made some minor adjustments in the BIOS settings (ver. F3):

[under Gigabyte web, BIOS version for GA-P55-UD4 is F6, F5, F4]

{Q1. Run DDR3 at the maximum speed, i.e. 1600MHz}

{Q1a CPU speed in Turbo Boost Tech for i750 = (20+1)*160MHz=3360MHz}

{If not running at Q1. & at least Q1a.; meaning NOT fully running at maximum DDR3 memory and/or O/C}

 

 

 

1. In Advanced Frequency Settings

1a. Base Clock(BCLK) Control [Enabled]

1b. BCLK Frequency (Mhz) [160MHz]

1c. Enabled XMP to Profile1

1d. System Memory Multiplier = Auto or 10.0

1e. Memory Frequency (Mhz) = 1600

1f. CPU Clock Ratio : 20 for i750 {20*160=3200GHz};

Since Intel® Turbo Boost Tech = (Default: Auto); therefore boot-up will show CPU speed is 21*160=3360MHz for i750

 

 

2. In Advanced Memory Settings

2a. Extreme Memory Profile (X.M.P.) = [Enabled]

2b. System Memory Multiplier (SPD) = Auto or 10.0

2c. Memory Frequency (Mhz) = 1600

2d. Performance Enhance = Change Turbo to Standard

2e. DRAM Timing Selectable (SPD) = Auto

 

 

 

3. In Advanced Voltage Settings:

3a. Load-Line Calibration = (Default: Disabled) Follow Intel Spec

3b. Set QPI/Vtt Voltage = Auto; 1.100V; 1.150V {Recommend set to 1.150v}

3c. Set DRAM voltage = Auto; 1.500V; 1.568v; 1.584v; 1.600v; 1.640V {Recommend set to 1.640v}

 

 

 

 

Cooldrive case: Boot to Win7 64bit. No problems like deadlocks, reboots, cold-start or stability problems whatsoever ...????? Sure ???????

Running at DDR3 at 1600Mhz?

CPU speed in win7 64bit at 3360MHz?

 

 

 

For Mem case (My case): BIOS P55AUD3.F2 or P55AUD3.F4 or P55AUD3.F5c or P55AUD3.F5 face BIOS message sometimes when cold boot-up as follow:

"The system has experienced boot

failures because of overclocking or

changes of voltages.

 

Last settings in BIOS setup may not

coincide with current H/W states."

 

Current CPU Speed : 2.660GHz (133*20)

Current BCLK :133MHz

Current Memory Speed :1333MHz

 

 

{ONLY happen at cold boot-up; Corsair CMX4GX3M2A1600C9 problem?}

{ONLY happen at cold boot-up; Gigabyte P55A or P55 M/B problem?}

{warm Boot}: no problem on Corsair DDR3 ram; very stable in win7 64 OS.

Thanks.

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I didn't face any problems with this machine, since I adjusted the settings from the beginning. Been 100% stable for more than 3 months. However, on another machine with similar configuration, I had the famous problem of "Soft boot -> Sudden soft restarts in Win7 -> Cold boot -> Problems fixed until next soft restart". Initially this rig was setup just using Optimized defaults due to a great hurry, but later I adjusted XMP, DRAM and QPI/Vtt voltages and the problems were gone.

 

Mem, seems you're fond of extensive text listings. Here's something tasty for you from one machine of mine:

1. M.I.T main menu

Bios: F3 (have no reason to update)

BCLK: 160.04

CPU freq: 2720.75 MHz

Mem freq: 1600.50

Tot.mem.size: 4096

Vcore: 1.264

DRAM volt: 1.632

 

2. Adv. freq. settings

CPU clock ratio: 17

BCLK freq. 160

XMP: Profile 1

CIA 2: Disabled

all other setting to Auto

 

3. Adv. mem. settings

XMP: Profile 1

Mem. freq. 1600 MHz

Perf. enhance: Standard

all other settings to Auto

 

4. Adv. voltage settings

QPI/Vtt: 1.15

DRAM: 1.640

all other settings to Auto

 

The Bios error message you get after cold boots indicates (of course) that there are conflicting values in Bios, for example (note: example) not having adjusted QPI/Vtt voltage after enabling XMP. In such a case the mem. freq, would drop down to 1333MHz from a previous setting of 1600 MHz.

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I didn't face any problems with this machine, since I adjusted the settings from the beginning. Been 100% stable for more than 3 months. However, on another machine with similar configuration, I had the famous problem of "Soft boot -> Sudden soft restarts in Win7 -> Cold boot -> Problems fixed until next soft restart". Initially this rig was setup just using Optimized defaults due to a great hurry, but later I adjusted XMP, DRAM and QPI/Vtt voltages and the problems were gone.

 

Here's something tasty for you from one machine of mine:

 

 

2. Adv. freq. settings

CPU clock ratio: 17

 

 

4. Adv. voltage settings

QPI/Vtt: 1.15

DRAM: 1.640

all other settings to Auto

 

The Bios error message you get after cold boots indicates (of course) that there are conflicting values in Bios, for example (note: example) not having adjusted QPI/Vtt voltage after enabling XMP. In such a case the mem. freq, would drop down to 1333MHz from a previous setting of 1600 MHz.

===============================================

 

What I see from your setting, the CPU speed at you are running is 160MHz*17=2.720GHz with QPI/Vtt: 1.15v, DRAM: 1.640v, XMP enabled.

You have NOT fully run at CPU clock ratio: 20 for i5 750

 

 

Machine 1/ Machine 2:

Get higher DDR3 speed other than default 1333Mhz, is to have CPU speed run higher than default. Overclock is involved... ....

Have you even set CPU Clock Ratio : 20 for i750 {20*160=3.200GHz}?

{System Memory Multiplier (SPD) = 10.0}

___or 8.0 to achieve higher CPU speed than 3.200Ghz; ie. 20*200=4.000GHz?

{Run DDR3 at the maximum speed, i.e. 1600MHz}

{Run BCLK= 160Mhz}

___or BCLK= 200Mhz ... ....?

{XMP enabled}}

 

#{CPU speed in Turbo Boost Tech for i750 = (20+1)*160MHz=3360MHz}

with CPU Core voltage:?, QPI/Vtt: 1.15v?, DRAM: 1.640v?

Stability? Cold-boot msg? etc? No hang in Win 7 64, prime95, IntelBurntestV2.4, etc?

 

 

#___{CPU speed in Turbo Boost Tech for i750 = (20+1)*200MHz=4200MHz}

with CPU Core voltage:?, QPI/Vtt: 1.15v?, DRAM: 1.640v?

Stability? Cold-boot msg? etc? No hang in Win 7 64, prime95, IntelBurntestV2.4, etc?

 

 

Thanks.

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Honestly, now I don't understand what you are trying to say or ask. Could you please clearly describe your memory problem(s)? Or are you just asking me if I have tried more or less random Bios settings? Or are you asking me for my experiences in several different ways of overclocking this rig? Well, if so, don't expect any answers from me in this forum, you have to join a dedicated OC forum for that.
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From the start, I thought you are running at 160Mhz*20 for i5 750 with recommend setting [XMP enabled, BCLK=160Mhz, DDR3=1600MHz, QPI/Vtt:=1.15v, DRAM:=1.64v].

 

 

Now I know, is NOT. What I see from your setting, the CPU speed at you are running is just 160MHz*17=2.720GHz which actually can perform much better since actual CPU clock ratio for i5 750 core is 20. (You are just using 17)

 

Those who get higher DDR3 speed other than default 1333Mhz, is to have CPU speed run higher than default. Overclock is involved... ....

 

 

Supposely, bought a DDR3 1600MHz 9-9-9-24 2T RAM;

Please try this before concluding that your recommend setting for the DDR3 ram [XMP enabled, BCLK=160Mhz, DDR3=1600MHz, QPI/Vtt:=1.15v, DRAM:=1.64v] has no problem(s) or issue(s) on this M/B if you can help on your side.

Then CPU Clock Ratio is still fixed at 20 for i750 {20*160=3.200GHz},

set the following:

{System Memory Multiplier (SPD) = 10.0}

{Run DDR3 at the maximum speed, i.e. 1600MHz}

{Run BCLK= 160Mhz}

{XMP enabled}}

#{CPU speed in Turbo Boost Tech for i750 = (20+1)*160MHz=3360MHz}

Then Set CPU Vcore:=1.2~1.3v, QPI/Vtt:=1.15v, DRAM:=1.64v in order to achieve stability.

 

Make sure you are are running at 3360MHz when boot-up.

Passed in MemTest86+ 4.0;

No hang and stable in Win 7 64, prime95, IntelBurntestV2.4, etc;

Facing cold-boot msg? Any other issue, please state?

It may take some time. ... .. ...

 

 

Thanks.

==============================

FYI:

 

For Mem case (My case):

CPU speed=20*160MHz

BCLK :160MHz

Memory Speed :1600MHz

CPU Vcore=2.2625v, QPI/Vtt:=1.15v, DRAM:=1.64v

[bIOS P55AUD3.F2 or P55AUD3.F4 or P55AUD3.F5c or P55AUD3.F5] face BIOS message sometimes when cold boot-up as follow:

 

"The system has experienced boot

failures because of overclocking or

changes of voltages.

 

Last settings in BIOS setup may not

coincide with current H/W states."

 

Current CPU Speed : 2.660GHz (133*20)

Current BCLK :133MHz

Current Memory Speed :1333MHz

 

 

 

{ONLY happen at cold boot-up; Corsair CMX4GX3M2A1600C9 problem?}

{If you got the error msg in BIOS: Just Enter BIOS & SAVE as per previous setting,

ie. BCLK=160Mhz; CPU=20*160 in BIOS; Enabled XMP to Profile1; ...

System Memory Multiplier (SPD) = 10.0

Performance Enhance = Standard

Load-Line Calibration = (Default: Disabled)

Set CPU Vcore=2.2625v, QPI/Vtt:=1.15v, DRAM:=1.64v

CPU speed in Turbo Boost Tech for i750 = (20+1)*160MHz=3360MHz in win7}

 

{warm Boot}: no problem on Corsair DDR3 ram; very stable in win7 64 OS.

 

 

 

Hope you can get what I am talking. Sorry for my bad English.

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I have understood that quite a few people are having problems with CMX4GX3M2A1600C9 and some Gigabyte m/b:s. So....here are the really simple adjustments I did to get a working combination. Maybe it can be of some help to those of you, who have gotten totally confused by all the expert advice in the forum:

 

I have a Gigabyte GA-P55-UD4 m/b with an i5_750 CPU. I placed the memory sticks (2 x 2 Gb) in slots #2 and #4 (#1 is the closest to the CPU-socket). Gigabyte names these slots DDR3_1 and DDR3_3).

 

Then I made some minor adjustments in the BIOS settings (ver. F3):

 

1. In the M.I.T. menu, submenu Adv. mem.settings: Enabled XMP to Profile1

and left System Memory Multiplier and DRAM Timing Selectable on Auto

2. In submenu Adv. volt. settings: Changed DRAM voltage from 1.5V to 1.64V

 

After that I have installed Win7 and XP in a dual boot config and played some demanding games like X3 Terran Conflict. No problems like deadlocks, reboots or stability problems whatsoever for more than a week now....

Windows Experience Index shows a value of 7.7 for memory operations.

 

I am not a RAM expert, so I played it the simple way. Or....maybe I was just lucky?

Do you turn your PC off every night?

I do, and that's what's giving me problems.

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Yes, the PC is completely shut down (power off through a main power switch for all connected equipment) at least 2-3 times during a 24h period and restarted from power off without any problems.

 

I have not read all your posts about your cold boot problems, but have you ruled out possible problems with your Power supply? I know this is another shot in the dark, but since your problems appear after switching on the PS, one might think that the PS initially generates shorttime faulty voltages, that affects your Bios detection function or in the supplied voltage to the memory modules.

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