I have an old laptop Acer 6930. There are 2 RAMs in it and both of them are 667 MHz:
When I checked in CPUZ , it shows like this:
Is there anything wrong with it?
Besides it shows as 333 MHz in CPUZ instead of 667 MHz. Laptop became very slow after having these 2 RAMs.
As always, it’s DDR – Double Data Rate. What’s advertised is the “effective frequency”, which is double the real frequency because it can transfer data two times per cycle (both rising and falling edge).
333.33 MHz * 2 = 666.67 MHz.
As you can see on your RAM module and in CPU-Z, it’s PC5300, which means 333.33 MHz.
If it’s really running at 333.33 MHz (you only show screenshots of what the modules are capable of), everything is running as it should.
The 333Mhz is pretty accurate, since that's the Jedec specification for a 667Mhz module.
Keep in mind that DDRx (where x in 1,2,3 etc) stands for double data rate, which means that the 333 value you see translates to ~667.
I also dont think that the performance slowdown is related to the above
