F5F Stay Refreshed Hardware Desktop Looking for ways to adjust DDR5 settings? You're aiming for a more consistent XMP profile.

Looking for ways to adjust DDR5 settings? You're aiming for a more consistent XMP profile.

Looking for ways to adjust DDR5 settings? You're aiming for a more consistent XMP profile.

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matthewt2001
Member
86
12-29-2021, 07:09 PM
#1
Hey there! I’m using two 16GB DDR5-5200 sticks (XPG Lancer, AX5U5200C3816G-CLABK). When running at default settings, DDR5-4800 40-40-40-76 works fine and passes memtest86. But with XMP1 enabled at 5200 38-38-38-76, I’m seeing major issues—about 206 errors in just 15 minutes. I’m not sure if a replacement is feasible. The store I bought it from currently has no DDR5 RAM in stock. I’m thinking about adjusting things manually, but I have no idea how to tweak the BIOS or voltage settings. I’m checking the BIOS for options like DRAM VDD and VDDQ, but I’m completely unsure about IMC voltage. Any tips, guides, or videos would be super helpful. My system runs i7-12700KF with RTX 3080 on an Asus Z690 Prime-A CSM.
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matthewt2001
12-29-2021, 07:09 PM #1

Hey there! I’m using two 16GB DDR5-5200 sticks (XPG Lancer, AX5U5200C3816G-CLABK). When running at default settings, DDR5-4800 40-40-40-76 works fine and passes memtest86. But with XMP1 enabled at 5200 38-38-38-76, I’m seeing major issues—about 206 errors in just 15 minutes. I’m not sure if a replacement is feasible. The store I bought it from currently has no DDR5 RAM in stock. I’m thinking about adjusting things manually, but I have no idea how to tweak the BIOS or voltage settings. I’m checking the BIOS for options like DRAM VDD and VDDQ, but I’m completely unsure about IMC voltage. Any tips, guides, or videos would be super helpful. My system runs i7-12700KF with RTX 3080 on an Asus Z690 Prime-A CSM.

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Emma31178
Member
193
01-17-2022, 08:07 AM
#2
VCCIO is your memory controller solution. Avoid making hasty decisions. Asus will eventually align with BIOS improvements. In the future, you might see enhanced memory performance after a BIOS update.
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Emma31178
01-17-2022, 08:07 AM #2

VCCIO is your memory controller solution. Avoid making hasty decisions. Asus will eventually align with BIOS improvements. In the future, you might see enhanced memory performance after a BIOS update.

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AwinK_ok0ru
Junior Member
12
01-17-2022, 04:11 PM
#3
I understand, thank you. I'm checking the area a bit now but can't locate VCCIO. Found "Memory Controller Voltage" at 1.119v (auto). Probably the right one? Also, what's the distinction between DRAM VDD and DRAM VDDQ? It's hard to find info online, and some posts suggest it applies to graphics cards.
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AwinK_ok0ru
01-17-2022, 04:11 PM #3

I understand, thank you. I'm checking the area a bit now but can't locate VCCIO. Found "Memory Controller Voltage" at 1.119v (auto). Probably the right one? Also, what's the distinction between DRAM VDD and DRAM VDDQ? It's hard to find info online, and some posts suggest it applies to graphics cards.

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boshdalek
Junior Member
12
01-17-2022, 04:46 PM
#4
Essentially this relates to your control over logic gates or voltage levels. You're referring to setting input VDD and output vddq, likely aiming for minimal adjustments. Using a 2667 DDR4 micron as an example would mean VDD equals VDDQ with about 1.2 volts and a swing of ±60 millivolts. You can find relevant documents here: the Micron data sheet for DDR4 and a technical note on power calculation. Yes, the "Memory Controller" section is quite clear—I think they opted for straightforward language rather than technical jargon.
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boshdalek
01-17-2022, 04:46 PM #4

Essentially this relates to your control over logic gates or voltage levels. You're referring to setting input VDD and output vddq, likely aiming for minimal adjustments. Using a 2667 DDR4 micron as an example would mean VDD equals VDDQ with about 1.2 volts and a swing of ±60 millivolts. You can find relevant documents here: the Micron data sheet for DDR4 and a technical note on power calculation. Yes, the "Memory Controller" section is quite clear—I think they opted for straightforward language rather than technical jargon.