When a ghz is given in an Intel cpu, it stands for each core right?

[Moded]

So in a 4th Generation Intel® Core™ i7-4790 processor (8MB Cache, up to 4.0GHz) the 4.0 ghz is for each core, but how many cores does it have?

[Archangel1994]

-Snip-

 

Read it wrong

[harrynowl]

Wrong actually. The CPU does not reach the maximum turbo on each core. If all 4 cores are in use it may only reach 3.8GHz. If 1-2 cores are in use it can reach 4GHz.

And to answer the question the 4790 is 4 cores with Hyperthreading. Which allows 1 core to execute 2 tasks at once for a small speed boost (30%) when an application can use it.

[harrynowl]

It has 4 cores, each running at 4.0GHz base and 4.4GHz turbo

That's the K version. The non K is 3.6-4GHz

[D2ultima]

So in a 4th Generation Intel® Core™ i7-4790 processor (8MB Cache, up to 4.0GHz) the 4.0 ghz is for each core, but how many cores does it have?

Simply google any intel CPU and check the ark intel website: http://ark.intel.com/products/80806/Intel-Core-i7-4790-Processor-8M-Cache-up-to-4_00-GHz

As far as turbo boost works, "max turbo" is for 1 core, then for 2 cores it's 100MHz less (so 3.9GHz in this case) then for 3 or 4 cores it's a further 100MHz less than 2 cores (so 3.8GHz in this case). It's similar to mobile CPUs in that trend (though mobiles have MUCH higher turbo clocks but a much lower base clock), but most peoples' desktop CPUs I see don't turbo at stock. No idea why. Haswell is a bit... finicky though. Could explain it.

 

Anyway, assume it's a 3.6GHz CPU. And I also suggest the 4790K CPU for about $20 more might be better as its base clock is 4GHz.