Differences between different generation cpu's

Motoxyogi

Honorable
Jan 30, 2014
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Hi guys,
Just curious about the differences between different generation processors.
Say for example a Intel Core 2 Duo T5800 and a i5-4202Y. Both are 64-bit dual core processors with a max clock speed of 2 GHz.

I know that the i5 has hyper-threading, a bigger cache and is significantly more efficient due to it's smaller lithiography. Not accounting for the more modern motherboard support what other differences are there?
 
Solution
Actually there is. Quite a big one too. It's just that most people on this site don't actually use lower end processors so hesitate to comment.

The i-core Haswell is 10% faster than the Ivy bridge. The Ivy is 10% faster than the sandy bridge, and that was clock for clock 30% faster than the Yorkfields as shown here: http://www.tomshardware.co.uk/charts/x86-core-performance-comparison/benchmarks,128.html

As a result you're looking at a chip that is quite a bit faster. Single threaded apps will clock up to the same Ghz as the T5800 but with 40-50% more work done per clock, and multithreaded apps will benefit from faster IPC, more cache, better context switching and better RAM (as the i5 will use DDR3) and that's before we add...
The newer i5 also uses less energy, has a GPU if needed.

It would really matter what you were doing, and the COSTS involved but the newer CPU would likely be the way to go.

The POWER scores have to be taken with a grain of salt. TDP isn't the same as average power actually consumed. The newer i5 probably uses HALF the power.
 

genz

Distinguished
Actually there is. Quite a big one too. It's just that most people on this site don't actually use lower end processors so hesitate to comment.

The i-core Haswell is 10% faster than the Ivy bridge. The Ivy is 10% faster than the sandy bridge, and that was clock for clock 30% faster than the Yorkfields as shown here: http://www.tomshardware.co.uk/charts/x86-core-performance-comparison/benchmarks,128.html

As a result you're looking at a chip that is quite a bit faster. Single threaded apps will clock up to the same Ghz as the T5800 but with 40-50% more work done per clock, and multithreaded apps will benefit from faster IPC, more cache, better context switching and better RAM (as the i5 will use DDR3) and that's before we add hyperthreading support in the i5 on top to futher accelerate multi-thread applications.
 
Solution