F5F Stay Refreshed Hardware Desktop RAM is recognized but only half of it is accessible when applying XMP profile 1.

RAM is recognized but only half of it is accessible when applying XMP profile 1.

RAM is recognized but only half of it is accessible when applying XMP profile 1.

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WreckerSG
Member
201
06-26-2022, 09:18 PM
#1
I have a similar problem. I just put together a brand new setup with an MSI Z790 Gaming Plus WIFI DDR5 motherboard and a Team Group Kit 32GB (two 16GB units). After installing Windows and doing some tests, I set the XMP profile to 1. Everything worked fine at first, though I’m not sure if all 32GB of RAM were actually installed. Recently, during startup, I got a warning that the CPU or RAM had changed, but it vanished quickly and the system started normally. After checking, I found out that XMP profile 1 was turned off, and my RAM was running at 4800MHz instead of the expected 6000MHz. I tried enabling XMP again in BIOS, but when I restarted, only 16GB at 6000MHz was recognized. Even after resetting the RAM and trying different combinations (A1 B1 or A2 B2) and running Windows memory diagnostics, the issue persisted. The BIOS and Windows Task Manager both showed 32GB in dual-channel, but only half was visible. When I disabled XMP, both BIOS and Windows displayed the full 32GB at 4800MHz. I also reset the RAM, but none of the tools reported XMP or EXPO profiles. CPUID in CPU-Z lists 32GB RAM, but in the BIOS I see both sticks and only half of them are recognized. The specs match what I have, but the performance is inconsistent. Any advice would be greatly appreciated!
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WreckerSG
06-26-2022, 09:18 PM #1

I have a similar problem. I just put together a brand new setup with an MSI Z790 Gaming Plus WIFI DDR5 motherboard and a Team Group Kit 32GB (two 16GB units). After installing Windows and doing some tests, I set the XMP profile to 1. Everything worked fine at first, though I’m not sure if all 32GB of RAM were actually installed. Recently, during startup, I got a warning that the CPU or RAM had changed, but it vanished quickly and the system started normally. After checking, I found out that XMP profile 1 was turned off, and my RAM was running at 4800MHz instead of the expected 6000MHz. I tried enabling XMP again in BIOS, but when I restarted, only 16GB at 6000MHz was recognized. Even after resetting the RAM and trying different combinations (A1 B1 or A2 B2) and running Windows memory diagnostics, the issue persisted. The BIOS and Windows Task Manager both showed 32GB in dual-channel, but only half was visible. When I disabled XMP, both BIOS and Windows displayed the full 32GB at 4800MHz. I also reset the RAM, but none of the tools reported XMP or EXPO profiles. CPUID in CPU-Z lists 32GB RAM, but in the BIOS I see both sticks and only half of them are recognized. The specs match what I have, but the performance is inconsistent. Any advice would be greatly appreciated!

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Wolfyyy_
Senior Member
358
06-26-2022, 10:10 PM
#2
Likely faulty RAM or failing motherboard. I'll reach out to support in that sequence.
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Wolfyyy_
06-26-2022, 10:10 PM #2

Likely faulty RAM or failing motherboard. I'll reach out to support in that sequence.

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Sucka
Member
93
06-27-2022, 02:24 PM
#3
I've reached out to both parties, holding for their response. Any suggestions on identifying the source?
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Sucka
06-27-2022, 02:24 PM #3

I've reached out to both parties, holding for their response. Any suggestions on identifying the source?

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satya123
Member
59
07-10-2022, 10:08 PM
#4
I’ve reached some conclusions after thorough testing. Based on the results, it seems the issue lies with the RAM. After cleaning the RAM modules, verifying proper installation and clearing the CMOS, I suspect some SPD data might have been lost (confirmed via CPU-Z, memtest86, and BIOS checks). This particular stick doesn’t respond to XMP or manual overclocking when paired with another stick, no matter the DIMM setup, but it can be manually overclocked individually—though it doesn’t offer XMP support if that information isn’t available. Online sources suggest performance tools or RGB controllers could alter or damage the SPD data. I’m submitting a return request this week.
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satya123
07-10-2022, 10:08 PM #4

I’ve reached some conclusions after thorough testing. Based on the results, it seems the issue lies with the RAM. After cleaning the RAM modules, verifying proper installation and clearing the CMOS, I suspect some SPD data might have been lost (confirmed via CPU-Z, memtest86, and BIOS checks). This particular stick doesn’t respond to XMP or manual overclocking when paired with another stick, no matter the DIMM setup, but it can be manually overclocked individually—though it doesn’t offer XMP support if that information isn’t available. Online sources suggest performance tools or RGB controllers could alter or damage the SPD data. I’m submitting a return request this week.