OS : Windows XP Pro
CPU : Dual Core AMD Athlon 64 X2 3800+
MotherBoard : ASUS M2NPV-VM
MotherBoard Chipset : nVIDIA GeForce 6150 GPU; nVIDIA nForce 430 MCP
Memory : Corsair TwinX DDR2-800 C5 2X512Mb
Monitor : SynMaster 933SN+; Max Res. 1360x768 @ 75Hz
PSU : Acbel 400Watt
HarDisk Drive : Seagate 80Gb S-ATA II; WD 320Gb S-ATA II; WD 500Gb S-ATA II
Optical Drive : BenQ DVD DC DW1800 P-ATA
Current VGA : ASUS EAX1650Pro 256Mb GDDR3
as you can see i currently have a total of 1gb of memory consist of 2x512mb memory placed on slot 1 & slot 3 on the mother board to activated the dual-channel feature, my question is if i want to add more memory let's say 2Gb consist of 2x1Gb memory on slot 2 & slot 4, can i still get the dual-channel feature ON?
In other words, if i were to use 2 twin memory but different in memory size, can i still have the dual-channel ON?
so can it still work if the additional memory is different brand (slot 2 & slot 4 have different memory brand) ?
Your RAM is DDR2-800 and is also known as PC6400 (or PC2-6400). If the additional RAM has the "6400" in its name it will work.
If you will get RAM with different speed but supported by your MoBo, it will work but will default to the lower RAM speed.