The system has 64GB DDR4 memory, but only 31.9GB is available for use. Determine the solution.
The system has 64GB DDR4 memory, but only 31.9GB is available for use. Determine the solution.
Hello everyone.
I’m still trying to figure out how long I’ve been dealing with this issue. The first time I installed 32GB (16GBx2), I thought I had 64GB available. Recently, I began encountering BSOD errors while using my Ps. By accident, I found out in the system info that the RAM was only half the capacity. I’m attaching screenshots for your understanding.
I’m running Windows 10 64-bit.
The 64GB installed isn’t fully usable—only 31.9GB according to the OS. I’ve turned on XMP Profile 1 in the BIOS, but swapping the RAM didn’t help. I kept two slots free and tried installing the remaining sticks in slots 3 and 4; the OS still shows 32GB available, even though the actual installed amount is 64GB.
Here’s what I’ve checked:
- There are four 16GB sticks installed.
- If two 16GB sticks are placed in A1 and A2, the system reports 32GB usable and 32GB installed.
- Placing just two 16GB sticks in B1 and B2, leaving A1 and A2 empty, doesn’t start the system—this seems like a built-in feature of this motherboard.
- All sticks are DDR4 and share the same part number from Corsair.
Could you help me resolve this? My image editing programs aren’t performing well because the available RAM isn’t sufficient for smooth operation.
Attachments: screenshots
You possess 32.1 GB of Hardware Reserved, which means the new 2x 16GB configuration won’t be compatible with your existing 2x 16GB setup. Reserved RAM can often cause issues with physical RAM, RAM slots, or the CPU itself. The BIOS might recognize all 64 GB, but if a problem exists, the RAM will be flagged as reserved because it cannot be accessed. Combining memory is generally not advisable. Why? For more details, see the second chapter on mixed memory. Link: https://forums. Notably, your RAM model CMK16GX4M1E3200C16 isn’t listed in the MoBo memory QVL at all. This means there’s no assurance it will function properly. Only a few 3200 Mhz kits are available, and none of the Corsair 16GB models will work when all four slots are filled. The only Corsair 3200 Mhz kit that supports all four slots is the one with 4GB DIMMs (totaling 16GB). Therefore, for improvements: 1. Consider purchasing a 4x 16GB RAM package to ensure compatibility. 2. Choose a kit from the MoBo memory QVL for added assurance. You can obtain the memory QVL here: https://www.gigabyte.com/Motherboard/GA-...upport-doc Select the "For Pinnacle Ridge support" version, as it matches your CPU model. Examples of compatible sets include: - 64GB configuration confirmed to work in all four slots for Gigabyte; - 3000 Mhz options such as HX430C15PB3K4/64 (HyperX), CMU32GX4M2C3000C15 (Corsair), F4-3000C14Q2-128GVKD (G.Skill), and 2933 Mhz variants. More choices are available in the memory QVL.
The first time I set up 32GB (16GBx2) with my old version, I noticed 64GB was available. Recently, I began experiencing BSODs while using my Ps.
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CMK16GX4M1E3200C16
Check all RAM modules in your build and check the PCB revisions for them.
You're currently running BIOS version F51g;
https://www.gigabyte.com/Motherboard/GA-...rt-dl-bios
Flash to version F52 and then reset the CMOS.
If the manual you linked is the right one then it's DIMM 1-4 so what do you mean by A1/A2 and B1/B2?
If you're talking about the two separate memory channels then you have a memory channel which isn't working.
Does it show 64GB correctly without the XMP profile enabled?
If it does then your CPU's memory controller cannot handle 3200 which wouldn't necessarily be surprising since Zen+ was real hit and miss with memory controllers. Should this be the case try clocking it down to 2933 and see if that works.
If nothing resolves how it's showing up then you can try removing the CPU and reseating it making sure there's no socket damage, pin damage and that the mounting tension is good. If this doesn't work then it's likely a CPU or motherboard problem and the only way to troubleshoot would be with other hardware: your CPU in a different, known working, board or a different, known working, CPU in your board.
Two ram kits with identical part numbers don't fit together. The internal setup could vary significantly. Each kit might use different XMP profiles to achieve the claimed performance. Beyond that, Ryzen is quite picky about ram compatibility, and handling four sticks is far more complex than two. What should you do?
These are the only 64gb options available for that motherboard from G Skill. Observe that they all fall within the 2133-2666 M/Ts range? This is due to the fact that pushing RAM density higher with multiple sticks limits speed and stability.