Chosen Solution
I currently have 4GB DDR3L ram(1.35v & 1600MHz) with core i5 haswell processor. I have a extra 2GB ram DDR3 (1.5v & 1333Mhz) in another laptop. Can i add 2GB ram to the 4GB DDR3L laptop ?? will voltage difference make a bios error ???
You would be creating other problems by using them. Here’s a deeper writeup on DDR3 and DDR3L: Wikipedia - DDR3 SDRAM. Basically your system would run hotter and will likely encounter crashes as the RAS & CAS speeds are not quite the same causing read/write errors.
I got the same laptop as you. When you add ddr3, the laptop doesn’t read the ddr3. There are a voltage differences. ddr3l support 1.35V and 1.50V. ddr3 support only 1.50V
DDR3 memory was once the most popular memory type on motherboards. However, DDR3 is starting to become less common as DDR4memory becomes more widespread. This is because DDR4 has higher bandwidth and can therefore handle more data at once. If you want to use DDR3 memory on a DDR4 motherboard, you’ll need to make sure that the board supports it. Otherwise, you may experience problems with your computer.