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Question RAM being detected as 4000mhz instead of 6200mhz on new build ?

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Sevatear

Sevatear

Jul 31, 2023
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Hey, this is my first build in around 7? years, so I haven't had to deal with DDR5 before, nor XMP profiles. Unfortunately I have run into an issue where my ram isn't being fully utilised. I purchased two Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W) and as the title states, I am only getting 4000mhz while on auto settings.
Either XMP profile one or two means my PC will not boot, a second attempt to boot will put me into the bios settings, thankfully.
I'm at a loss here, theres too many variables for me to even guess at this point, if theres any more information I can give, please ask.
Any help is appreciated.

My build is as follows.
Windows 11.
Intel Core i9-13900KF (BX8071513900KF)
Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W)
Asus ROG Strix z690-F Gaming wifi (90MB18M0-M0EAY0)
1000W Corsair HX1000 Platinum PSU.
Still using a 3070 until I can buy a 4090 next month.

https://files.catbox.moe/na5rnz.txt DxDiag at this link.
 
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Sevatear said:
Hey, this is my first build in around 7? years, so I haven't had to deal with DDR5 before, nor XMP profiles. Unfortunately I have run into an issue where my ram isn't being fully utilised. I purchased two Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W) and as the title states, I am only getting 4000mhz while on auto settings.
Either XMP profile one or two means my PC will not boot, a second attempt to boot will put me into the bios settings, thankfully.
I'm at a loss here, theres too many variables for me to even guess at this point, if theres any more information I can give, please ask.
Any help is appreciated.

My build is as follows.
Windows 11.
Intel Core i9-13900KF (BX8071513900KF)
Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W)
Asus ROG Strix z690-F Gaming wifi (90MB18M0-M0EAY0)
1000W Corsair HX1000 Platinum PSU.
Still using a 3070 until I can buy a 4090 next month.

https://files.catbox.moe/na5rnz.txt DxDiag at this link.
Click to expand...
Set XMP the manually change the speed to 5600.
 
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Sevatear said:
Hey, this is my first build in around 7? years, so I haven't had to deal with DDR5 before, nor XMP profiles. Unfortunately I have run into an issue where my ram isn't being fully utilised. I purchased two Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W) and as the title states, I am only getting 4000mhz while on auto settings.
Either XMP profile one or two means my PC will not boot, a second attempt to boot will put me into the bios settings, thankfully.
I'm at a loss here, theres too many variables for me to even guess at this point, if theres any more information I can give, please ask.
Any help is appreciated.

My build is as follows.
Windows 11.
Intel Core i9-13900KF (BX8071513900KF)
Corsair Dominator Platinum DDR5 32GB 6200MHZ (CMT32GX5M2X6200C36W)
Asus ROG Strix z690-F Gaming wifi (90MB18M0-M0EAY0)
1000W Corsair HX1000 Platinum PSU.
Still using a 3070 until I can buy a 4090 next month.

https://files.catbox.moe/na5rnz.txt DxDiag at this link.
Click to expand...
Test with one stick of ram in slot a2.
Proper bios?
 
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Last edited:
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Zerk2012 said:
Memory is in A2 and B2?
Click to expand...
a1 and b1 is what they're currently in, same as what the manuel recommends. I had trouble when I first built the machine with ram slots too. I remember being told to place ram in the slots furthest from the CPU but again, had boot issues when I tried this. I'll give it another try as I now know I can always go back.
 
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Sevatear said:
a1 and b1 is what they're currently in, same as what the manuel recommends. I had trouble when I first built the machine with ram slots too. I remember being told to place ram in the slots furthest from the CPU but again, had boot issues when I tried this. I'll give it another try as I now know I can always go back.
Click to expand...
 
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I cannot find your RAM (CMT32GX5M2X6200C36W) in the motherboard QVL so it's not surprising you're having problems, especially with automatic XMP settings at 6,200MT/s.

Check the various primary, secondary and tertiary timings held in SPD (Serial Presence Detect) for a range of different memory speeds, e,g. 6,000MT/s, 5,800MT/s, 5,600MT/s, 5,400MT/s, 5,200MT/s 5,000MT/s, 4,800MT/s, etc., then try programming them manually into the BIOS.

Start low (4,800) and work higher, until the system hangs. You should be able to reach 5,600MT/s, maybe higher.

Check the boost voltage required for XMP and your RAM. It probably needs 1.35V instead of 1.20V at stock JEDEC. Apply this voltage with your manual overclock. You might need 1.40V or even 1.45V for 6,200MT/s. Do not exceed 1.50V.

XMP is a wonderful invention (if it works), but sometimes it fails dismally, expecially with unsupported RAM not in the mobo QVL. That's when manual programming can save the day.
 
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SkyNetRising said:
Disable XMP.
Disable Intel Adaptive Boost.
Disable Asus Multicore Enhancement.

Try with single module in A2 slot.
Try with single module in B2 slot.
Click to expand...
Done this. A2 loads by itself at 4800, B2 is a non start. A2+B2 is a non start ( Upon a restart, same settings it is now 4000 again? )
Misgar said:
I cannot find your RAM (CMT32GX5M2X6200C36W) in the motherboard QVL so it's not surprising you're having problems, especially with automatic XMP settings at 6,200MT/s.

Check the various primary, secondary and tertiary timings held in SPD (Serial Presence Detect) for a range of different memory speeds, e,g. 6,000MT/s, 5,800MT/s, 5,600MT/s, 5,400MT/s, 5,200MT/s 5,000MT/s, 4,800MT/s, etc., then try programming them manually into the BIOS.

Start low (4,800) and work higher, until the system hangs. You should be able to reach 5,600MT/s, maybe higher.

Check the boost voltage required for XMP and your RAM. It probably needs 1.35V instead of 1.20V at stock JEDEC. Apply this voltage with your manual overclock. You might need 1.40V or even 1.45V for 6,200MT/s. Do not exceed 1.50V.

XMP is a wonderful invention (if it works), but sometimes it fails dismally, expecially with unsupported RAM not in the mobo QVL. That's when manual programming can save the day.
Click to expand...
Honestly when I made the purchase I didn't think there would be an issue, I used pcpartpicker and nothing was picked up but I guess the problem is more specific than "DDR5 compatible"
I have already boosted the voltage to 1.4, seemingly no problem there. I haven't heard of SPD before, so I'll have to look at that.
 
Last edited:
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PEnns said:
Did the 2 sticks of RAM come in one package or 2 separate ones?

Have you tried both sticks singly in A2 / B2?

You may want to run MemTest on the RAM to verify that both are fine

MemTest86
Click to expand...
Yeah, purchased together, same package. I haven't kept an eye on which of the sticks works in A2 ( and A1+B1 ) or if its both. Memtest is already on the mobo it seems, I did use it for three cycles without issue so I decided to stop and just use my PC. I'll have to do a full scan.
 
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Alright, BOTH sticks work in A2 andf at 4800hz. A1 and B1 together run at 4000hz. I'm going to see if both work with one in A2 and another in A1/B1 and then I will do the memtest. Heres hoping.
 
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Sorry about the late reply, I was busy unfortunately. I have resolved it though! I didn't check the CPU (thankfully! I was very reluctant to open it back up)
I don't know why or what exactly fixed it but I have the ram in slot a1 and a2, xmp 1 enabled, intel adaptive boost and multicore boost both disabled.
I appreciate all the support!
 
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