which processor has more speed an intel pentium 4(3ghz) or core2duo(2ghz)?

Answer 1

if you are referring to just straight processing speed, then 3ghz is faster than 2ghz. However, with modern CPUs and computers and software you can't think about it like that. If you were to run just one program at a time, then the P4 would be faster. But you will never be running just one program at a time. In fact, you are usually running about 30 at a time (look under the system processes) The C2D is much more efficient at handling the workload than a single-core P4 so its "effective" speed (while you can't really measure it) is much faster than a P4. Try not to think about as speed, but more as effeciency and the ability to handle a workload. These are the 2 things that the C2D does quite well. The newer quad core do an even better job of this by splitting up the tasks between four cpu cores!

Answer 2

djfear is close, but still is not quite right. Even if you could only run 1 program at a time, and even if you only used one of the two cores on the Core 2 Duo, the C2D would STILL be faster, even though it has a slower clock speed. The reason, its called IPC, that stands for instruction per cycle. Ghz is only a measure of how many clock cycles there are in a given amount of time, it doesn't tell you how much work is done on each of those clock cycles. So while the P4 would have more clock cycles in a given amount of time, the C2Ds much higher IPC would still allow it to do more work.

Add in the factors djfear mentioned, the fact that you always have numerous programs running, and add in the dual cores of the Core 2 Duo, and its advantage become even larger.

Answer 3

If i were you, you can forget about the p4. It overheats to easily and uses up a lot of power. Stick to the new core 2 duo. It may not be 3ghz but its dual core and microarchitecture technology makes all the difference to make it a better CPU than the P4 processor.

Answer 4

Core 2 Duo is best. In benchmarks below, even a 1.8Ghz E4300 Core2 Duo beats 3.2Ghz Pentium D935 (dual core).
http://www.xbitlabs.com/articles/cpu/display/pentium-e2160_9.html#sect0
http://www.xbitlabs.com/articles/cpu/display/pentium-e2160_13.html#sect0