Intel Core i5-2400S CPU Review
 

So, if you are planning to put together a small but fast computer system, a special energy-efficiency Sandy Bridge modification may be the way to go. The model lineup of these processors featuring lower power consumption and heat dissipation includes several different models marked with “S” or “T” following the processor model number. “S” stands for 65 W thermal envelope, while “T” indicates 45 W TDP or even lower.

However, low power consumption is achieved at a price, and part of it is slightly lower clock frequency. In other words, energy-efficient processor models are slightly slower than their “fully-fledged” brothers with 95 W TDP. That is why the 65 W S-series seems to be most interesting choice for typical compact systems. Its TDP is low enough to allow putting these processors even inside the smallest Mini-ITX cases, while the performance differences from the regular Sandy Bridge processors should be not very dramatic. We decided to discuss a processor like that in our today’s review, and we picked Core i5-2400S – an average model in terms of speed as well as TDP.

http://www.xbitlabs.com/articles/cpu...-i5-2400s.html