DDR2 RAM 8 GB 2X 4 GB 2Rx4 PC2-6400 800Mhz 240Pin Desktop Memory ...
4 slots means more potential RAM in total, but more work for the memory controller. Some have trouble achieving high clocks with 4 sticks.
ASrock B450M-Pro4 RAM configuration?! | Tom's Hardware Forum
I'm about to buy the particular ASrock mobo and I can't seem to understand how RAM configuration works on it. I wanna put 2 sticks of RAM on it (HyperX Fury 2666 2x4). Which DIMM slots should my RAM sticks populate so I can have them in dual channel?
Motherboard manual...
Check Available RAM Slots in Windows 11 - 5 Unique Methods
If your motherboard supports 16 GB of RAM and has four slots, you can install four 4 GB sticks or two 8 GB sticks to reach your maximum. ...