F5F Stay Refreshed Hardware Desktop Asus Sabertooth 990fx r2.0 is a gaming laptop featuring the latest technology.

Asus Sabertooth 990fx r2.0 is a gaming laptop featuring the latest technology.

Asus Sabertooth 990fx r2.0 is a gaming laptop featuring the latest technology.

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KAPAMASTERPTYT
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10-08-2016, 07:33 AM
#1
I possess an older Asus Sabertooth 990fx r2.0 board with an AMD 9590 processor and a 32 GB Kingston HyperX Furry DDR3 1866 RAM setup (four sticks, eight GB each). The BIOS is up to date (version 2901). Mobo boots fine, but I’m curious why the BIOS displays 32752 MB instead of the expected 32 GB. Where does the 16 MB seem missing? All four sticks are correctly detected in the EZ profile. Windows 10 version 21H2 reports a maximum memory limit of 31.9 GB (with 0.1 GB reserved).
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K
KAPAMASTERPTYT
10-08-2016, 07:33 AM #1

I possess an older Asus Sabertooth 990fx r2.0 board with an AMD 9590 processor and a 32 GB Kingston HyperX Furry DDR3 1866 RAM setup (four sticks, eight GB each). The BIOS is up to date (version 2901). Mobo boots fine, but I’m curious why the BIOS displays 32752 MB instead of the expected 32 GB. Where does the 16 MB seem missing? All four sticks are correctly detected in the EZ profile. Windows 10 version 21H2 reports a maximum memory limit of 31.9 GB (with 0.1 GB reserved).

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Zologa19
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10-09-2016, 08:04 AM
#2
BIOS allocates memory for different purposes.
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Zologa19
10-09-2016, 08:04 AM #2

BIOS allocates memory for different purposes.

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Gollum4545
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10-16-2016, 11:53 PM
#3
I understand. However, the total memory (excluding usable space) needs to be displayed completely.
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Gollum4545
10-16-2016, 11:53 PM #3

I understand. However, the total memory (excluding usable space) needs to be displayed completely.

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Magic_Wolf_
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10-18-2016, 06:27 PM
#4
Why?
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Magic_Wolf_
10-18-2016, 06:27 PM #4

Why?

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J
JesseHeroBrine
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10-18-2016, 07:18 PM
#5
You focus on 0,049% because it represents a significant detail that matters in your context.
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JesseHeroBrine
10-18-2016, 07:18 PM #5

You focus on 0,049% because it represents a significant detail that matters in your context.

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Myeahkah
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10-18-2016, 08:49 PM
#6
I don’t mind, but I’m curious about finding a 16MB of RAM.
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Myeahkah
10-18-2016, 08:49 PM #6

I don’t mind, but I’m curious about finding a 16MB of RAM.

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jersey2013
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10-19-2016, 07:26 AM
#7
Typically used for holding fundamental hardware details, similar to the memory Windows allocates. Any software or firmware always adds some extra space. This kind of extra space can be an issue for those with just 4GB of RAM, since Windows reserving 128MB is over 3%. However, given your RAM amount, it shouldn't be a major concern—well under half a percent. The 16MB figure is negligible, less than one-twentieth of a percent.
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jersey2013
10-19-2016, 07:26 AM #7

Typically used for holding fundamental hardware details, similar to the memory Windows allocates. Any software or firmware always adds some extra space. This kind of extra space can be an issue for those with just 4GB of RAM, since Windows reserving 128MB is over 3%. However, given your RAM amount, it shouldn't be a major concern—well under half a percent. The 16MB figure is negligible, less than one-twentieth of a percent.

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SwozeRTV
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10-19-2016, 08:31 AM
#8
No, the total memory does not include the hardware reserve memory.
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SwozeRTV
10-19-2016, 08:31 AM #8

No, the total memory does not include the hardware reserve memory.

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Totoro_Playz
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10-19-2016, 02:59 PM
#9
I tried a small experiment yesterday. I removed all RAM sticks (two pairs of 8 GB paired memory) and did these things:
1. Placed one 4 GB DDR3 stick in each slot, showing 4096 MB total.
2. Used one 8 GB stick per slot, displaying 8192 GB total.
3. Used two sticks in two slots (one channel), showing 16384 MB—same result when switching channels.
4. Repeated the same for other three sticks, always getting 8192 MB.
5. Put all four sticks together and got 32752 MB.

I noticed a loss of 16 MB RAM when all slots were filled. I suspect the AMD FX processors in this series may struggle with full memory usage, especially the 128-bit memory controller. Anyone else think AMD Raisen has similar issues?
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T
Totoro_Playz
10-19-2016, 02:59 PM #9

I tried a small experiment yesterday. I removed all RAM sticks (two pairs of 8 GB paired memory) and did these things:
1. Placed one 4 GB DDR3 stick in each slot, showing 4096 MB total.
2. Used one 8 GB stick per slot, displaying 8192 GB total.
3. Used two sticks in two slots (one channel), showing 16384 MB—same result when switching channels.
4. Repeated the same for other three sticks, always getting 8192 MB.
5. Put all four sticks together and got 32752 MB.

I noticed a loss of 16 MB RAM when all slots were filled. I suspect the AMD FX processors in this series may struggle with full memory usage, especially the 128-bit memory controller. Anyone else think AMD Raisen has similar issues?

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D
DomiTheDork
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10-19-2016, 06:40 PM
#10
It depends on your intent. Are you seeking knowledge for understanding technology, or do you have a genuine concern about the issue?
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DomiTheDork
10-19-2016, 06:40 PM #10

It depends on your intent. Are you seeking knowledge for understanding technology, or do you have a genuine concern about the issue?

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