about 電腦RAM

因有一條RAM燒左, 而家得番一條, 想買多幾條RAM, 買4條2GB
我的底板係 Asus P5B, 上佢官網話可以support max 8gb ram,
但我用everest軟件check部機,彈左以下的野:

係尾2個行寫住2048mb??=.= 咁姐係點?? 我唔想買番來用唔到[ Memory Controller ] Memory Controller Properties: Error Detection Method None Error Correction None Supported Memory Interleave 1-Way Current Memory Interleave 1-Way Supported Memory Types DIMM, SDRAM Supported Memory Voltages 3.3V Maximum Memory Module Size 2048 MB Memory Slots 4