DDR5 Ram running in low speed

[Jithendiran]

Hi team
i'm using 16 GB DDR5 RAM, 5600 MHz
but it's clock speed is low

```
# lshw -c memory
....
description: DIMM Synchronous Unbuffered (Unregistered) 5600 MHz (0.2 ns)
product: F5-5600J3636C16G
vendor: Unknown
physical id: 1
serial: xxxxxxxxxxxx
slot: DIMMA2
size: 16GiB
width: 64 bits
clock: 1305MHz (0.8ns)

```
expected clock speed is 2800 MHz

[emissary42]

Did you enable the EXPO/XMP?

Make sure the motherboard is compatible and the modules are installed in the two primary DIMM slots. Then enter the UEFI and enable the performance profile.

https://www.gskill.com/community/158...-for-DDR4-DDR5

Afterwards software should report a DRAM frequency of 2800 MHz (if it is capable to read it correctly for DDR5).

[Jithendiran]

I'm using
CPU: AMD 8600G
Mother board :MSI PRO B650-S WIFI
yes it is installed in primary slot A2

Tested software is capable only I think, because I tested with custom script that also results the same

[GSKILL TECH]

Are you using the latest BIOS/UEFI?

[Jithendiran]

Yes
Latest stable build

[GSKILL TECH]

Do you have CPUz? Can you share the Memory and SPD tabs?

[Jithendiran]

I'm using Linux, i don't have cpu-z
I believe this will help

# lshw -c memory
...
*-bank:1
description: DIMM Synchronous Unbuffered (Unregistered) 5600 MHz (0.2 ns)
product: F5-5600J3636C16G
vendor: Unknown
physical id: 1
serial: xxxxxxxxx
slot: DIMMA2
size: 16GiB
width: 64 bits
clock: 1305MHz (0.8ns)

[emissary42]

If you enabled the EXPO/XMP and the settings did not revert during POST, then it seems like a false reading. You might have to look for another way to confirm it, either by dual booting WinPE and one of the usual tools or keep looking for a different way to do the same with Linux.

Edit: Your motherboard might also report the actual memory frequency in the UEFI and during POST, if you disable the boot screen (and pause at the right moment).

[Jithendiran]

Ok, I will do that,if nothing I found I try write a custom program to test the bandwidth

I confirmed in bios screen it showed as 5200 but i don't have any tool to test the bandwidth from BIOS

So in theory for 5600MHz max of 44.1GBps , Since my setting is only for 5200 MHz max of 41.6 GBps I can achieve
I have to get atleast 40+GBps
Am I correct?