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i5 vs i7 in general

post #1 of 7
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Aside from the hyperthreading on i7 SB/IB and Haswell, clock for clock are the i7's any better/different that the i5's ?

Does the better silicon tend to go to the flagship i7's ? Didi they OC higher with SB and IB?
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post #2 of 7
Quote:
Originally Posted by Kaltenbrunner View Post

Aside from the hyperthreading on i7 SB/IB and Haswell, clock for clock are the i7's any better/different that the i5's ?

Does the better silicon tend to go to the flagship i7's ? Didi they OC higher with SB and IB?

Cache and hyperthreading (as you noted) are the biggest differences. An i7 won't necessarily clock higher than an i5 *especially if you've got an IB tongue.gif). Basically, the only reason to put down the extra cash for an i7 is if you've got programs that'll take advantage of all 8 threads. Otherwise, there's really no substantial difference in most programs/applications.
post #3 of 7
Exactly what Broseidon said.
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post #4 of 7
Aside from hyperthreading, the 2nd generation i5s are the same as the 2nd generation i7s clock for clock as far as performance is concerned.
Again, the 3rd generation i5s are the same as the 3rd generation i7s clock for clock. But there's a performance difference between 2nd and 3rd gen CPUs. Clock for clock, the 3rd gens aka the IBs will perform better than the 2nd gens aka the SBs. Again, Haswell is supposed to better than IBs at the same clocks. All of this is considering the fact that all the CPUs under consideration have the same number of cores, which is four in most cases. The performance of CPUs with higher number of cores may be different.

As for better silicon going to the flagship i7s, I think the 3960X and 3970X CPUs get better chips than the other CPUs. But they are of the SB-E series so I dont suppose that they should be compared on the same level with SB/IB/Haswell.

So in a nutshell, clock for clock with the number of cores being constant, SB < IB < Haswell.

Hope this helps! thumb.gif
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post #5 of 7
HT would be disabled on centains clocks for keeping stability(mainstream) and only with multi thread app i7 take advantage of extra cache and HT... in gaming Extreme CPU are slightly better than mainstream procesors(i5/i7) and Extreme processors tends to make more heat than mainstream
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post #6 of 7
Thread Starter 
I might get an i7-4770k this time, I might need the HT next year, if not thats fine too
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post #7 of 7
Quote:
Originally Posted by Kaltenbrunner View Post

I might get an i7-4770k this time, I might need the HT next year, if not thats fine too
One thing to keep in mind is you will be getting the first Haswell's smile.gif
Always safe to wait a bit and see what they change in the newer productions, as like anything that comes out, there is defects, flaws, and things that always change.
GL with the upgrade mate thumb.gif
  
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