The term core memory is a leftover from an early form of random access memory (RAM). Magnetic core memory was first patented in 1947 and was used in early computers through the 50s and 60s. According to Wikipedia’s article, magnetic core memory was replaced by integrated silicon RAM chips in the 1970’s. Unlike modern silicon RAM, core memory was non-volatile — it retained its contents indefinitely without power.
Intel introduced a new naming scheme for its new Core processors. There are three variants, Core i3, Core i5, and Core i7, but the names no longer correspond to specific technical features like the number of cores. Instead, the brand is now divided from low-level (i3), through mid-range (i5) to high-end performance (i7), which correspond to three to five stars in Intel’s Intel Processor Rating as opposed to the entry-level Celeron (one star) and Pentium (two stars) processors.
For my curious friends !
- Core i3 has 2 cores !
- Core i5 has 2 or 4 cores !
- Core i7 has 2,4 or 6 cores !
Now the question is how i3 is efficient then core 2 duo ?
Technically there are many differences but shortly what makes the big difference is the cache .
- core i3 max cache = 4mb L3
- core i5 max cache= 8mb L3
- core i7 max cache =12mb L3
Processor earlier then i3 used L2 type cache .