Hardware Reserved 16.1Gb RAM

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pdoanthuannb96 View Drop Down

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Topic: Hardware Reserved 16.1Gb RAM
Posted: 18 May 2023 at 5:53pm

(Sorry for the bad English)
1. My AMD PC have 32Gb ram but only 15.9Gb RAM usable, and 16.1Gb RAM is "Hardware Reserved"
2. When i go to BIOS Setting, PC will restart 2 time (even i not change anything)
3. Turn on XMP Profile 2.0 and set frequency to 3000Mhz but in Task Manager show Ram frequency is 2133Mhz.
=> What can i do now?
My Spec:
-CPU: Ryzen7 2700X
-MotherBoard: X370 Killer SLI
-Memory: 2x8GB Gskill 3000Mhz, 2x8Gb Kimtigo 3200Mhz
-OS: Windows 10 64bit, version 22H2

(Image: https://drive.google.com/drive/folders/1BI72N40vJcFX9txaJCNc8lHbDJE8ljtB?usp=sharing)

cx5

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Posted: 19 May 2023 at 9:36am

Good morning @

I don't know about 16GB hardware reserve solution.

But I know solution to XMP, your PC boot twice is proof that XMP not compatible with bios version, there are a few ways to overcome them but all has it's limitation, no perfect solution, hence you've got to try which ever works or which you like.

Choices
A) Upgrade or downgrade bios and try to find which bioses is compatible with your XMP. Trial and error required.

B) manually find out your XMP full parameters and key in them, details in these posts history
https://forum.asrock.com/forum_posts.asp?TID=24829&title=xml-profile-2-0-not-working-with-ram

it's important to read this = https://www.overclock.net/threads/asrock-x370-taichi-overclocking-thread.1627407/page-504#post-29010423

Don't use cpuz, it's useless. You must use zentiming software to voltages of
free download https://zentimings.protonrom.com/

1) vddr_SOC = 1.1v
2) cldo_VDDP = 1v
3) vddg_IOD = 1.1v
4) vddg_CCD = 1.1v

If you load XMP in bios, but the above voltages does not appear and remains in auto then it means the bios is lacking of library, the solution is key in them manually.

http://www.my-acoustic.com/images/GirdMstr75.jpg

x370taichi@3.50gen4
AX750 Optane900P SN770
3800x PosdonZro4 BarrowPWM-17w>420x140x28
XFX SWFT319 6900XT
MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz

eccential

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Posted: 19 May 2023 at 6:18pm

How are the 4 DIMMs arranged?
Since the 2 sets are NOT matched (never recommended), it would make a difference. I think they need to be arranged so that the CPU sees the matching DIMM on different channels, so the two channels look symmetrical.

I would do it this way:
Best (fastest) DIMM pair at A2, B2 slots.
Worse (slower) DIMM pair at A1, B1 slots.

If that doesn't work, swap the sets. But I would never put mismatching DIMMs in different numbered slots.

I've no idea how CPU-Z orders the Slot number, but if it's in physical order, that would mean (according to motherboard manual):
CPU-z Slot #1 = Motherboard Slot A1
CPU-z Slot #2 = Motherboard Slot A2
CPU-z Slot #3 = Motherboard Slot B1
CPU-z Slot #4 = Motherboard Slot B2

If so, I'd want to see the matching DIMMs at CPU-z Slots #1/#3 and #2/#4, but that's not what I see.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
pdoanthuannb96 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 18 May 2023 Location: VietNam Status: Offline Points: 20	Post Options Post Reply Quote pdoanthuannb96 Report Post Thanks(0) Quote Reply Topic: Hardware Reserved 16.1Gb RAM Posted: 18 May 2023 at 5:53pm
	(Sorry for the bad English) 1. My AMD PC have 32Gb ram but only 15.9Gb RAM usable, and 16.1Gb RAM is "Hardware Reserved" 2. When i go to BIOS Setting, PC will restart 2 time (even i not change anything) 3. Turn on XMP Profile 2.0 and set frequency to 3000Mhz but in Task Manager show Ram frequency is 2133Mhz. => What can i do now? My Spec: -CPU: Ryzen7 2700X -MotherBoard: X370 Killer SLI -Memory: 2x8GB Gskill 3000Mhz, 2x8Gb Kimtigo 3200Mhz -OS: Windows 10 64bit, version 22H2 (Image: https://drive.google.com/drive/folders/1BI72N40vJcFX9txaJCNc8lHbDJE8ljtB?usp=sharing)

cx5 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 15 Sep 2017 Location: Hong Kong Status: Offline Points: 2398	Post Options Post Reply Quote cx5 Report Post Thanks(0) Quote Reply Posted: 19 May 2023 at 9:36am
	Good morning @ I don't know about 16GB hardware reserve solution. But I know solution to XMP, your PC boot twice is proof that XMP not compatible with bios version, there are a few ways to overcome them but all has it's limitation, no perfect solution, hence you've got to try which ever works or which you like. Choices A) Upgrade or downgrade bios and try to find which bioses is compatible with your XMP. Trial and error required. B) manually find out your XMP full parameters and key in them, details in these posts history https://forum.asrock.com/forum_posts.asp?TID=24829&title=xml-profile-2-0-not-working-with-ram it's important to read this = https://www.overclock.net/threads/asrock-x370-taichi-overclocking-thread.1627407/page-504#post-29010423 Don't use cpuz, it's useless. You must use zentiming software to voltages of free download https://zentimings.protonrom.com/ 1) vddr_SOC = 1.1v 2) cldo_VDDP = 1v 3) vddg_IOD = 1.1v 4) vddg_CCD = 1.1v If you load XMP in bios, but the above voltages does not appear and remains in auto then it means the bios is lacking of library, the solution is key in them manually. http://www.my-acoustic.com/images/GirdMstr75.jpg
	x370taichi@3.50gen4 AX750 Optane900P SN770 3800x PosdonZro4 BarrowPWM-17w>420x140x28 XFX SWFT319 6900XT MSI RX560 LP to get Fluid Motion BlueskyFRC 75hz

eccential Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 5275	Post Options Post Reply Quote eccential Report Post Thanks(0) Quote Reply Posted: 19 May 2023 at 6:18pm
	How are the 4 DIMMs arranged? Since the 2 sets are NOT matched (never recommended), it would make a difference. I think they need to be arranged so that the CPU sees the matching DIMM on different channels, so the two channels look symmetrical. I would do it this way: Best (fastest) DIMM pair at A2, B2 slots. Worse (slower) DIMM pair at A1, B1 slots. If that doesn't work, swap the sets. But I would never put mismatching DIMMs in different numbered slots. I've no idea how CPU-Z orders the Slot number, but if it's in physical order, that would mean (according to motherboard manual): CPU-z Slot #1 = Motherboard Slot A1 CPU-z Slot #2 = Motherboard Slot A2 CPU-z Slot #3 = Motherboard Slot B1 CPU-z Slot #4 = Motherboard Slot B2 If so, I'd want to see the matching DIMMs at CPU-z Slots #1/#3 and #2/#4, but that's not what I see.