Can you replace a single-core processor with a dual-core processor?

Answer:
If it shares the same slot-type and the motherboard supports it, yes. In some cases, a motherboard will support a processor with a higher number of cores than was originally intended thanks to BIOS updates.

For instance, Asus M2N motherboards were originally released around the time that dual-core Athlons (Athlon X2) were gaining popularity. They supported single and multi-core processors of the AM2/AM2+ (slot) type by design. With the latest BIOS updates, they officially support AMD Phenom II X4 processors of the AM3 type up to the Phenom X4 945, and many users have had success installing 955s in these boards too.

If you are considering installing a dual-core processor in place of the existing single-core processor, it would be best to check the compatibility of your board with such processors before going further.
First answer by White Hawk. Last edit by White Hawk. Contributor trust: 71 [recommend contributor recommended]. Question popularity: 0 [recommend question].