Linked Questions

14
votes
4answers
3k views

How can a processor execute more IPS than its frequency? [duplicate]

This has been something that I can't seem to wrap my head around. Just about every modern processor is able to execute more instructions per second than its frequency. I can understand why lower ...
0
votes
3answers
987 views

What factors other than clock speed influence the performance of a CPU? [duplicate]

Having seen various people test powerful emulators on their computers, I have come to surprise hearing about how one CPU can have triple the clock speed but still have worse single-threaded ...
0
votes
1answer
541 views

Does the GHZ of A CPU Make A Huge Difference [duplicate]

I am currently running an i3-2330M @ 2.2GHZ -- I was looking at 5th Gen Intel® Core™ i3-5010U processor. I understand obviously that the new one would be a 5th Gen and it's a 5010U which is obviously ...
0
votes
1answer
450 views

What is the significance of CPU clock speed differences between different generations/types of processors? [duplicate]

I currently have a computer equipped with a quad core Intel Core i5 430M / 2.26 GHz. I noticed that the clock speed of the CPU to be higher than most of the i7 Haswell processors which are about ...
-2
votes
1answer
282 views

Are Intel Processors' GHz really matter? [duplicate]

It has been confusing me for a long time. Say, an Intel 4th Gen dual-core i5-4200U which clocks at 1.6 GHz and up to 2.6 GHz and an Intel 4th Gen dual-core i3-4160 which clocks at 3.6 GHz. As I see ...
0
votes
1answer
131 views

Speccing out CPUs (more than just cores and clock) [duplicate]

This is not a production question, just something that I've been thinking about. When speccing out CPUs I know the general rule is a faster clock speed will make a core run faster and the greater ...
0
votes
0answers
47 views

Why is Pentium 4 Prescott slow compared to Pentium M? [duplicate]

I was benchmarking if it is worth to put loop inside a callback function so I tested fourth order Runge-Kutta of on y'=y in C++, all with gcc 5.1 on Ubuntu with compilation command g++ -std=c++11 -O3 ...
63
votes
9answers
17k views

Why have CPU manufacturers stopped increasing the clock speeds of their processors? [closed]

I have read that manufacturers stopped concentrating on higher clock speeds and are now working on other things to improve performance. With an old Desktop machine with Intel® Xeon® Processor E3110 ...
21
votes
3answers
5k views

Where are Intel Itanium chips used?

I think that all the Intel chips I've ever bought were IA-32 architecture. Are Intel Itaniums sold in desktops or laptops?
6
votes
4answers
7k views

What does it mean (to decode) in the execution cycle

In a typical instruction cycle, fetching, decoding, executing together form one cycle. My question is about the decoding step: What is the part that gets decoded, is it the instruction's opcode? If so,...
9
votes
1answer
6k views

In Prime95, why do small FFTs generate the most heat, despite CPU at 100% for all options?

I've just built a new Skylake PC, and I'm going to see about a bit of overclocking with Prime95 as a stress tester. It works fine in normal use, but with Prime95 I'm noticing a bit of CPU throttling ...
3
votes
2answers
2k views

Instruction per Cycle vs Increased Cycle Count

Increasing either instruction per cycle or increase cycle count both are valid design choice for processor manufactures. I understand theory, but it would be much clearer if I had some real life ...
19
votes
2answers
2k views

Are 64-bit processors “faster” than 32-bit ones, simply because they are 64-bits? [duplicate]

I have pondered that some say "32-bit is old news" because you are limited in RAM without cutting around, such as with PAE. Assuming first that the following factors weigh in on the processor's speed ...
7
votes
2answers
6k views

What's the difference between a superscalar and a vector processor?

They both can process multiple instructions in the same time, but I suppose there is a fundamental difference which explains why there are two names and we haven't just switched to using superscalar ...
0
votes
4answers
4k views

Is one core of an i7 much faster than a Core 2 Duo core at the same clock speed? [closed]

Since the app I'm running runs only as a single process, it only uses one core. I have a Core 2 Duo 2.4 GHz now. I'm wondering if I purchased a Core i7 2.4 GHz, would it usually complete general CPU ...

15 30 50 per page