how many Hz?

[ibehymer]

what are Hz? how much better is 4 GHz compared to 2 GHz?

[niofalpha]

In what sense? The number of "Hz" (Hertz) are the number of actions that can be done every second.

The character before them (G, M, T) are the standard metric prefixes (Giga, Mega, Terra) used in everything that uses the metric system.

[Mew]

If it's the same cpu, then it should be 100% faster. 

[Peter Vaughan Truslow]

what are Hz? how much better is 4 GHz compared to 2 GHz?

Hz are cycles per second. a processor that runs at 4ghz has twice as many cycles per second as one that runs at 2GHz. all things held equal, CPU benchmarks would have double the performance on a 2GHz unless something else was the weak link in performance.

when comparing processors that are not the same, it gets more complicated, as you have to take into account core count, instructions per clock, etc.

[ibehymer]

In what sense? The number of "Hz" (Hertz) are the number of actions that can be done every second.

The character before them (G, M, T) are the standard metric prefixes (Giga, Mega, Terra) used in everything that uses the metric system.

like the higher the Hz the higher performance of..? what? fps? what does more Hz do beside more cycles per second?

[ibehymer]

like more Hz makes what better about your pc?

[-rascal-]

like the higher the Hz the higher performance of..? what? fps? what does more Hz do beside more cycles per second?

 

Say a Processor can do 20 calculations per cycle (20 per 1 Hz), so with 2GHz...

20 X 2,000,000,000 Hz =  40,000,000,000 calculations in one second.

 

And for 4GHz...

20 X 4,000,000,000 Hz = 80,000,000,000 calculations in one second.

 

In a computer system, more computations / calculations can be done at a given time (when you are playing games, all the CPU and GPU is doing is number crunching) which can result in...higher FPS in games. Your CS:GO montage videos will get encoded / rendered faster, your high resolution pictures will load faster, etc.

[ibehymer]

Say a Processor can do 20 calculations per cycle (20 per 1 Hz), so with 2GHz...

20 X 2,000,000,000 Hz =  40,000,000,000 calculations in one second.

 

And for 4GHz...

20 X 4,000,000,000 Hz = 80,000,000,000 calculations in one second.

 

In a computer system, more computations / calculations can be done at a given time (when you are playing games, all the CPU and GPU is doing is number crunching) which can result in...higher FPS in games. Your CS:GO montage videos will get encoded / rendered faster, your high resolution pictures will load faster, etc.

a 3.5 GHz processor would be good for most games?

[-rascal-]

a 3.5 GHz processor would be good for most games?

 

Depends on what this processor is, and what are you comparing it to.

You need apples-to-apples comparisons for pure "GHz" to be valid.

 

As I said in my previous example.

 

If a one Processor can only do 20 instructions per 1Hz, and it is 2GHz, then

20 X 2,000,000,000 Hz =  40,000,000,000 calculations in one second.

 

If another Processor can do 70 instructions per 1Hz, and it is only 1.5GHz, then

70 X 1,500,000,000 Hz =  105,000,000,000 calculations in one second.

 

The 1.5GHz Processor is Faster.

"Hz" isn't everything. It is like comparing two cars.

One car can rev up to 6,000 RPM, while another can do 9,000 RPM. That doesn't show which on is faster.

Just by comparing the max RPM's means nothing...when the 6,000 RPM car has a V12 900 HP engine, while the 9,000 RPM is a damn Honda Civic.

Apples-to-apples comparison: 6,000 RPM V12 compared to a 9,000 RPM V12 (both same engines); in this case the 9,000 RPM one will be faster.

 

A 3GHz Intel Pentium 4 from 2003....will get FACE ROLLED by a 2GHz Intel i5-4690K.

[Mew]

a 3.5 GHz processor would be good for most games?

 

What cpu are you looking at because it appears you are incapable of making an intelligent and correct decision when deciding on your cpu? 4690k, if so, then great. It's an excellent cpu for gaming. FX 8320? That would be a poor choice. 

[Munalos]

What cpu are you looking at because it appears you are incapable of making an intelligent and correct decision when deciding on your cpu? 4690k, if so, then great. It's an excellent cpu for gaming. FX 8320? That would be a poor choice.

There's no need to insult him, he is only trying to learn. Granted there might be better ways.. The fact still remains. @OP just go with intel, amd isn't worth it right now in the cpu area.

[LogicalDrm]

a 3.5 GHz processor would be good for most games?

 

There is more to whats better CPU than just speed. Like number of cores and threads. Here's good video about this subject:

[ibehymer]

What cpu are you looking at because it appears you are incapable of making an intelligent and correct decision when deciding on your cpu? 4690k, if so, then great. It's an excellent cpu for gaming. FX 8320? That would be a poor choice. 

Intel Core i5-4690K Processor is what im getting. I just don't get why some AMD processors have more Hz than most intel processors when intel is much more expensive.

[SteveGrabowski0]

like more Hz makes what better about your pc?

 

A 2 GHz computer takes 1/2 a nanosecond per clock cycle, a 4GHz computer takes 1/4 a nanosecond per clock cycle. So if your CPU can do a multiplication in 4 clock cycles, it takes 2 nanoseconds to do it when clocked at 2 GHz and 1 nanosecond when clocked at 4 GHz.

[Shakaza]

Intel Core i5-4690K Processor is what im getting. I just don't get why some AMD processors have more Hz than most intel processors when intel is much more expensive.

That is a scenario in which having more Hz isn't necessarily better. AMD's current CPUs, in simple terms, have crap instructions per cycle performance. It's like 50% behind Intel's at the same clockspeed, so while an FX-8350 is at 4 GHz vs. the i5-4690k's 3.5, the i5 will still be miles ahead. You made a good choice for gaming

[typographie]

what are Hz? how much better is 4 GHz compared to 2 GHz?

 

Hertz or Hz is a generic unit for frequency that can be described as "times per second" or 1/s. It's the same unit used for sound/vibrations, radio waves, electromagnetic radiation, and anything that we can measure in occurrences per second. Applied to CPUs it refers to the CPU's clock frequency. 4 GHz means four billion (Giga-) clock cycles per second.

 

Assuming you're comparing two processors based on the same architecture (like an i5-4690K at 2 GHz versus an i5-4690K at 4 GHz), then 4 GHz means up to twice as fast, depending on the task. That goes out the window completely if you're comparing two processors of different architectures, such as an Intel CPU and an AMD CPU, because they don't do the same things in each clock cycle.

[ibehymer]

Hertz or Hz is a generic unit for frequency that can be described as "times per second" or 1/s. It's the same unit used for sound/vibrations, radio waves, electromagnetic radiation, and anything that we can measure in occurrences per second. Applied to CPUs it refers to the CPU's clock frequency. 4 GHz means four billion (Giga-) clock cycles per second.

 

Assuming you're comparing two processors based on the same architecture (like an i5-4690K at 2 GHz versus an i5-4690K at 4 GHz), then 4 GHz means up to twice as fast, depending on the task. That goes out the window completely if you're comparing two processors of different architectures, such as an Intel CPU and an AMD CPU, because they don't do the same things in each clock cycle

that helped a lot. thank you