Why is my 3200MHz RAM only showing 1600MT/s?

You might want to double-check your RAM sticks. I have a similar setup, and my sticks are also Corsair Vengeance. Just remember that the actual speed displayed in tools like Task Manager might not be the most reliable. CPU-Z gives a more accurate reading of the DRAM frequency.

If you're using mixed RAM speeds, make sure to set it to the lower speed of the two sticks for stable performance. For your setup with one stick at 3000MHz and the other at 3200MHz, setting both to 3000MHz will be your best choice.

Actually, what you're seeing is correct! The term DDR means double data rate, so when RAM is labeled as 3200MHz, it effectively runs at 1600MT/s in terms of clock speed. The RAM's MT/s (Mega Transfers per second) is double its MHz value, which can be confusing.

You're right about the confusion around terminology! Just to clarify, DDR4 3200 is technically 1600MHz in terms of clock speed. Most monitoring tools might mix up MT/s and MHz, which can create some misunderstandings.

Just a heads up, some tools can be misleading. Check CPU-Z for a more definitive readout of your RAM's frequency. Task Manager can sometimes misreport these details.