MSI bazooka plus b450m

[bryanlam2153a02d4]

Hi Everyone, I’ve two sticks of ram total of 16gb with 3000 speed. Why my task manager only show 1500 instead of 3000?

 

[citay]

Probably because sometimes it can show the frequency instead of the DDR speed. It's important to know that the DDR speed (for example DDR4-3000) is not actually the frequency of the RAM (even though the BIOS shows it as "MHz", which strictly speaking is wrong). The DDR speed is more correctly given in MegaTransfers/s, because it is the result of DDR = double data rate. So the RAM actually runs at a frequency of 1500 MHz * 2 = 3000 MT/s or DDR4-3000.

You can check with the help of CPU-Z, which also takes DDR literally. But we know for sure that it does, so it's no problem. When it shows half the DDR speed, meaning when it shows 1500 MHz in the Memory tab, then this RAM runs at the proper speed of DDR4-3000.

Here is a screenshot of my CPU-Z, showing my DDR4-3600, it is shown as 1800 MHz (not exactly, it never hits it on the nose):

And here is the "SPD" tab, showing again the relation of the frequency in MHz to the actual DDR speed:

Again, the frequencies/speeds are sometimes a bit higher or lower than the round number, they all work off of a multiplier.

So, check in CPU-Z, then you will know what is happening. Never rely on the task manager for accurate hardware information.
CPU-Z is good for these things, and otherwise, check with something like HWinfo64.

 

[bryanlam2153a02d4]

Probably because sometimes it can show the frequency instead of the DDR speed. It's important to know that the DDR speed (for example DDR4-3000) is not actually the frequency of the RAM (even though the BIOS shows it as "MHz", which strictly speaking is wrong). The DDR speed is more correctly given in MegaTransfers/s, because it is the result of DDR = double data rate. So the RAM actually runs at a frequency of 1500 MHz * 2 = 3000 MT/s or DDR4-3000.

You can check with the help of CPU-Z, which also takes DDR literally. But we know for sure that it does, so it's no problem. When it shows half the DDR speed, meaning when it shows 1500 MHz in the Memory tab, then this RAM runs at the proper speed of DDR4-3000.

Here is a screenshot of my CPU-Z, showing my DDR4-3600, it is shown as 1800 MHz (not exactly, it never hits it on the nose):

View attachment 187218

And here is the "SPD" tab, showing again the relation of the frequency in MHz to the actual DDR speed:

View attachment 187219

Again, the frequencies/speeds are sometimes a bit higher or lower than the round number, they all work off of a multiplier.

So, check in CPU-Z, then you will know what is happening. Never rely on the task manager for accurate hardware information.
CPU-Z is good for these things, and otherwise, check with something like HWinfo64.

Thanks a lot for the detailed explanation! It really helped clarify things for me. Greatly appreciated!