Task manager displaying incorrect RAM details on Windows
Task manager displaying incorrect RAM details on Windows
Windows has always had some limitations when interpreting hardware, provided you input the correct settings. That should work fine.
Check CPU-z or the HW monitor for their readings. As mentioned before, Windows isn't always accurate.
The main factor is the appearance of the motherboard and BIOS settings. From your perspective, 8 gigabytes of DDR2 performs equally well to 8 gigabytes of DDR3.