Can't use my XMP Profile...3733mhz, won't boot..

[sha33]

Hi Guys,

I am stuck wit my new Maximus VIII Board.
Everything is perfect, but i just can't get my Ram to work at 3733 Mhz.

CPU is i7 6700K, stock, no OC.
Ram is Corsair Vengeance LPX, 2x8GB, DDR4, 3733Mhz.
Corsair specs : 17-19-19-39 1.35V.

With everything stock, my Ram is at 2133mhz.
I updated the Bios to the latest version, and manually (i mean, just select the RAM frequency in BIOS), i can't get the PC to boot over 2900Mhz. 2900Mhz, is the max, and everything works just fine.

If i go more than 2900Mhz, or load my XMP profile, the computer won't boot and give me back a Qcode of 55, "memory not installed".
I am a bit lost, i am fairly new to overclocking, so can someone can help me get my ram at 3733mhz ?

Thanks Guys

Sha33 🙂

[hiong]

change these settings in BIOS

Extreme Tweaker\DRAM Timing Control\Maximus Tweak -> Mode 1 (this setting's availability depends on which motherboard you have, you did not state exact model)
Extreme Tweaker\CPU VCCIO Voltage -> 1.2V (start with 1.2V, increase step by step if necessary)
Extreme Tweaker\CPU System Agent Voltage -> 1.25V (start with 1.23V, increase step by step if necessary)
Extreme Tweaker\DRAM Voltage -> leaving this setting alone should be fine, but you may have to up it to 1.36V or a little more to get stability

you can leave AI Overclock Tuner to "XMP", usually you don't have to manually set the RAM timings with the right voltages set

[sha33]

hiong wrote:
change these settings in BIOS

Extreme Tweaker\DRAM Timing Control\Maximus Tweak -> Mode 1 (this setting's availability depends on which motherboard you have, you did not state exact model)
Extreme Tweaker\CPU VCCIO Voltage -> 1.2V (start with 1.2V, increase step by step if necessary)
Extreme Tweaker\CPU System Agent Voltage -> 1.25V (start with 1.23V, increase step by step if necessary)
Extreme Tweaker\DRAM Voltage -> leaving this setting alone should be fine, but you may have to up it to 1.36V or a little more to get stability

you can leave AI Overclock Tuner to "XMP", usually you don't have to manually set the RAM timings with the right voltages set

It worked ! Thank you very much ! 😄

[bhealey]

I am wondering if you have any advice for my build. I have a Maximus Ranger VIII and am using Patriot 3600 memory. I am able to run the memory fine using 3200, but anything above that is unstable.

I tried to reproduce the settings you mentioned here but haven't had much luck. Its a little frustrating because in a no-boot situation I need to clear CMOS and start all over again.

Can you point me to the exact settings in my motherboards bios that I need to change to get this to work?

The XMP settings list:

DIMM # 1
SMBus address 0x51
Memory type DDR4
Module format UDIMM
Manufacturer (ID) Patriot Memory (7F7F7F7F7F0200000000)
Size 8192 MBytes
Max bandwidth DDR4-2132 (1066 MHz)
Part number 3600 C16 Series
Nominal Voltage 1.20 Volts
EPP no
XMP yes
XMP revision 2.0
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 10.0-10-10-25-35 @ 740 MHz
JEDEC #2 11.0-11-11-27-38 @ 814 MHz
JEDEC #3 12.0-12-12-30-42 @ 888 MHz
JEDEC #4 13.0-13-13-32-45 @ 962 MHz
JEDEC #5 14.0-14-14-35-49 @ 1037 MHz
JEDEC #6 15.0-15-15-36-50 @ 1066 MHz
JEDEC #7 16.0-15-15-36-50 @ 1066 MHz
XMP profile XMP-3602
Specification DDR4-3602
Voltage level 1.350 Volts
Min Cycle time 0.555 ns (1801 MHz)
Max CL 16.0
Min tRP 8.88 ns
Min tRCD 8.88 ns
Min tRAS 19.86 ns
Min tRC 37.74 ns
Min tRRD 5.53 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 9.0-9-9-21-39-n.a @ 1013 MHz (1.350 Volts)
XMP #2 11.0-11-11-25-47-n.a @ 1238 MHz (1.350 Volts)
XMP #3 12.0-12-12-27-51-n.a @ 1351 MHz (1.350 Volts)
XMP #4 13.0-13-13-30-56-n.a @ 1463 MHz (1.350 Volts)
XMP #5 14.0-14-14-32-60-n.a @ 1576 MHz (1.350 Volts)
XMP #6 15.0-15-15-34-64-n.a @ 1689 MHz (1.350 Volts)
XMP #7 16.0-16-16-36-68-n.a @ 1801 MHz (1.350 Volts)

[NemesisChild]

bhealey wrote:
I am wondering if you have any advice for my build. I have a Maximus Ranger VIII and am using Patriot 3600 memory. I am able to run the memory fine using 3200, but anything above that is unstable.

I tried to reproduce the settings you mentioned here but haven't had much luck. Its a little frustrating because in a no-boot situation I need to clear CMOS and start all over again.

Can you point me to the exact settings in my motherboards bios that I need to change to get this to work?

The XMP settings list:

DIMM # 1
SMBus address 0x51
Memory type DDR4
Module format UDIMM
Manufacturer (ID) Patriot Memory (7F7F7F7F7F0200000000)
Size 8192 MBytes
Max bandwidth DDR4-2132 (1066 MHz)
Part number 3600 C16 Series
Nominal Voltage 1.20 Volts
EPP no
XMP yes
XMP revision 2.0
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 10.0-10-10-25-35 @ 740 MHz
JEDEC #2 11.0-11-11-27-38 @ 814 MHz
JEDEC #3 12.0-12-12-30-42 @ 888 MHz
JEDEC #4 13.0-13-13-32-45 @ 962 MHz
JEDEC #5 14.0-14-14-35-49 @ 1037 MHz
JEDEC #6 15.0-15-15-36-50 @ 1066 MHz
JEDEC #7 16.0-15-15-36-50 @ 1066 MHz
XMP profile XMP-3602
Specification DDR4-3602
Voltage level 1.350 Volts
Min Cycle time 0.555 ns (1801 MHz)
Max CL 16.0
Min tRP 8.88 ns
Min tRCD 8.88 ns
Min tRAS 19.86 ns
Min tRC 37.74 ns
Min tRRD 5.53 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 9.0-9-9-21-39-n.a @ 1013 MHz (1.350 Volts)
XMP #2 11.0-11-11-25-47-n.a @ 1238 MHz (1.350 Volts)
XMP #3 12.0-12-12-27-51-n.a @ 1351 MHz (1.350 Volts)
XMP #4 13.0-13-13-30-56-n.a @ 1463 MHz (1.350 Volts)
XMP #5 14.0-14-14-32-60-n.a @ 1576 MHz (1.350 Volts)
XMP #6 15.0-15-15-34-64-n.a @ 1689 MHz (1.350 Volts)
XMP #7 16.0-16-16-36-68-n.a @ 1801 MHz (1.350 Volts)

Try XMP 7 with 1.40v. If stable, decrease in 0.10 increments until unstable, then increase by 0.10v.

[Jemeljsh2014]

hiong wrote:
change these settings in BIOS

Extreme Tweaker\DRAM Timing Control\Maximus Tweak -> Mode 1 (this setting's availability depends on which motherboard you have, you did not state exact model)
Extreme Tweaker\CPU VCCIO Voltage -> 1.2V (start with 1.2V, increase step by step if necessary)
Extreme Tweaker\CPU System Agent Voltage -> 1.25V (start with 1.23V, increase step by step if necessary)
Extreme Tweaker\DRAM Voltage -> leaving this setting alone should be fine, but you may have to up it to 1.36V or a little more to get stability

you can leave AI Overclock Tuner to "XMP", usually you don't have to manually set the RAM timings with the right voltages set

Hi, there,
I just wanted to say thank you regarding your post!

I just build a new rig around i7-7700K and ASUS Maximus IX Hero Z270 and was not able to get my Corsair Vengeance RGB 16GB ram to run @SPD speeds (3466Mhz (16-18-18-36, 1.35v).

After reading your post I manually changed CPU VCCIO Voltage&CPU System Agent Voltage to 1.10v and everything works.

Its funny that initially system booted fine from bios with just XMP profile loaded (with all voltages @auto), but cold boot was never successful. I guess with cold boot bios/mobo loaded up different AUTO voltages for VCCIO and CPU SAV than it did when I booted from bios. It was a headscratch because I could not understand why it booted from bios with no issues, but booted to a black screen from cold boot..

Anyway, changing from auto to manual @1.10v for both voltages I did arrive to a success story

All in all I am running the new rig (see signature) with everything @auto, except for loaded xmp profile, vcore voltage @1.25v, vccio voltage @1.10v and system agent voltage @1.10v.

1.10v is safe for 24/7/365 or should I try and go lower ?

MOBO: ASUS Maximus IX Hero Z270
CPU: i7-7700K @4,8ghz (1,24 vcore) (cooled by Noctua NH-D15)
RAM: Corsair Vengeance RGB 16GB @3600Mhz (16-16-18-36, 1.35v)
SSD: Samsung 850 PRO 512GB
VGA: MSI GeForce GTX 1080 ARMOR OC 8GB
PSU: Corsair AX850
CASE: be quiet! SILENT BASE 600
OS: Windows 10 (x64)

[Nate152]

Hi bhealey

Welcome to the ROG forum.

On the extreme tweaker tab:

CPU VCCIO voltage - 1.25v
CPU System Agent voltage - 1.25v

F10 and Enter.

If these two don't help raise the dram voltage to - 1.40v

F10 and Enter.

How does she go?

[Kenrou]

Nate152 wrote:
CPU VCCIO voltage - 1.25v
CPU System Agent voltage - 1.25v

Stock - 3200mhz 14-14-14-34 1.35v



Stable - 3733mhz 15-15-15-30 1.45v



Stable - 3866mhz 16-16-16-32 1.45v



Will boot Windows up to 4133mhz but it's all unstable. Motherboard or RAM ? was trying to stay under 1.5v which is the limit for XMP.

[JustinThyme]

First bit of advice I can offer to all is to try and stick to the certified vendor list in the manual for memory, especially when it comes to OCing. I first tried corsair vengeance 32 GB kit @3400 MHz. Wouldn't work no matter what I did. Double checked, not on approved vendors list. RMAd and picked the 64GB gskill trident 3400 MHz right off the list and ordered up that. It's worked no matter what I've set it too. If you look at the approved vendors list gskill dominates it with very little of a few others. Back in the day corsair was ALWAYS the answer and I bought nothing else. Now it seems to be nothing but a PITA.*

Not saying you can't get others to work if you mess with settings enough but certified vendors list has all the configurations of different sizes, combos and speeds that have been verified compatible. *Very few corsair sticks on the list.*

[Chino]

1.1V is fine.