AMD S939 Athlon 64 3700+ -vs- AMD Athlon 64 X2 4200+

[stockhausen]

I currently have a Socket 939 AMD Athlon 64 3700+. The S939 AMD Athlon 64 range is just about at the end of the road in terms of availability and I am thinking of replacing it with a twin core Athlon 64 X2 4200+.

I am not really that familiar with dual core technology and have a vague recollection of reading that the nominal "speed" of a dual core AMD CPU results from two cores, each running at a nominal "speed" rating of 2100 (in the case of a 4200+).

This seems entirely wrong, can anyone please clear up the question for me?

Incidentally, some CPU-Z details are:
Name : AMD Athlon 64 3700+
Code name : San Diego
Package : Socket 939
Technology : 90nm
Voltage : 1.338v
Core speed : 220MHz
Multiplier : x11.0

Many thanks

 

[stockhausen]

The 4200+ has a stock speed of 2.2ghz and would be a good improvement over a 3700+ because of the dual cores.

Thanks for that, but is that 1.1GHz for CPU1 & 1.1GHz for CPU2 -or-
2.2GHz for CPU1 & 2.2GHz for CPU2?

I know that seems like a daft question, but I really do have this distinct recollection of hearing that any single application running on a dual-core 2.2GHz CPU will run significantly slower than the same application running on a single core 2.2GHz CPU.

If you happen to be running a dual-core Athlon 64 X2, would you be able to run CPU-Z and tell me what the core speed and multiplier is for each of the two CPUs?

 

[stockhausen]

2.2ghz for each core. A single thread app will run at the same speed if both CPU's are clocked at the same speed- and of course are the same cores.

Many thanks for that; that was the answer I hoped to hear.