Both models
i5-2300 and
i5-2500 are based on
Sandy Bridge architecture.
"Sandy Bridge codename was originally ""Gesher"". The development began in 2005 and four years later, the first Sandy Bridge CPU was presented. The most prominent features are Intel Turbo Boost 2.0, AES encryption and SHA-1 hashing acceleration, Advanced Vector Extensions (AVX) 256-bit instruction set and the ability to have up to 8 physical cores or 16 logical cores through Hyper-Threading."
Using the multithread performance as a reference, the i5-2300 gets a score of
79.5 k points while the i5-2500 gets
86.9 k points.
Summarizing, the
i5-2500 is
1.1 times faster than the
i5-2300 . To get a proper comparison between both models, take a look to the data shown below.