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Intel price/performance way off? seems like it - Page 2

post #11 of 20
Quote:
Originally Posted by fade2green514 View Post

if I were to get an i5 I would prefer something more Overclockable. Are the newer ones more ocable? I was going to just get an i3 but I guess I'll just wait til I have enough to get an i5.
So yea, what's the best i5 for ocability? and not too terribly expensive
Sorry all these newer models are confusing to me, I THOUGHT i5's used to have hyperthreading guess that's the performance difference between i5 and i7 now, probably trying to prevent people buying a lower clocked model and simplying ocing more. They want u to buy the higher models.

i5 never had HT, i7 always had HT.

You cannot OC an i3 and only the i5/i7 'k'-versions can be overclocked.

Ivy Bridge is faster, but harder to OC, so you can easily settle for a 2500k.
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post #12 of 20
Quote:
Originally Posted by B!0HaZard View Post

You cannot OC an i3 and only the i5/i7 'k'-versions can be overclocked.

I'm not positive about the i3s, but the i5 and i7s can be overclocked even if they aren't the K version. They are just limited to 4 multipliers over stock.
Quote:
The second overclocking algorithm should be applied to all other Core i5 processors, which do not have an unlocked clock frequency multiplier. Although LGA 1155 platform doesn’t handle the increase in the base clock generator frequency too well and often loses stability at even 5% frequency increase, it is still possible to overclock non-K Core i5 processors. The thing is that Intel allows slightly increasing their multiplier by setting it no more than 4 points above the nominal value.

Keeping in mind that in this case Turbo Boost technology remains fully operational and allows overclocking Core i5 Ivy Bridge processors by 200 MHz even when all processor cores are utilized, the overall clock frequency “boost” can add up to as much as 600 MHz. In other words, Core i5-3570 may be overclocked to 4.0 GHz, Core i5-3550 – to 3.9 GHz, Core i5-3470 – to 3.8 GHz, and Core i5-3450 – to 3.7 GHz. And this is exactly what we saw during our overclocking experiments:

http://www.xbitlabs.com/articles/cpu/display/core-i5-ivy-bridge_11.html
post #13 of 20
Quote:
Originally Posted by Forceman View Post

I'm not positive about the i3s, but the i5 and i7s can be overclocked even if they aren't the K version. They are just limited to 4 multipliers over stock.
That's still only 4.1 GHz for 1 core. 4 cores will get 3.8 GHz. A K-edition will reach at least 4.5 and more likely 4.7 GHz. That's a 20% performance increase.
Edited by B!0HaZard - 12/7/12 at 1:51am
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post #14 of 20
I'm not sure what you mean. It'll put all 4 cores at the over clock speed, just like the K chips. So a 3570 will do 4.0 with 4 cores active. It's 4 multipliers over the turbo multiplier, not 4 over the base multiplier.
post #15 of 20
Quote:
Originally Posted by StayFrosty View Post

inb4 Intel vs AMD fanboy thermonuclear war.

Lol yeah. Especially seeing that the benchmarks immediate to thread start include a 3770K vs a 8350 instead of the i5 which is the processor it's geared at, speaking in market terms.


About the overclocking in non-K versions, I dare say it's even less than ridiculous. To put that in there they might as well just have locked it down and call it a day.


But I'll go with what you guys have said. Having more than 4 cores is useless unless you're doing some serious parallel computing that really uses the extra cores.

But what's worse is that software isn't using most of the new instruction sets present in the FX processors, so they make them even slower than they actually are.
   
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post #16 of 20
Quote:
Originally Posted by Forceman View Post

I'm not sure what you mean. It'll put all 4 cores at the over clock speed, just like the K chips. So a 3570 will do 4.0 with 4 cores active. It's 4 multipliers over the turbo multiplier, not 4 over the base multiplier.

I don't know about IB, but with SB, it's still Turbo boost. So 3.8 GHz for 4 cores, 4.1 GHz for 1 core.
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post #17 of 20
Quote:
Originally Posted by B!0HaZard View Post

I don't know about IB, but with SB, it's still Turbo boost. So 3.8 GHz for 4 cores, 4.1 GHz for 1 core.

I had to go back and do some more reading. They changed Turbo Boost with Ivy, so with 4 cores active it'll boost 2 multipliers instead of 1. So with the non-K chips you can overclock a total of 6 above the base freq with all 4 cores active (the base 2 plus the additional 4). So 3570 goes to 4.0 with all 4 active and the 3470 does a 38 multiplier (instead of 32-36), and it scales up with lowered cores. Still 400 Mhz above what you would have gotten though.
post #18 of 20
Never bothered with non k chips... But is the blk locked?
    
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post #19 of 20
Quote:
Originally Posted by Hokies83 View Post

Never bothered with non k chips... But is the blk locked?

I'm fairly sure it isn't. It'll only net you around 200 MHz though because it goes unstable so quickly.
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post #20 of 20
Ivy is pretty good up to 210black so i read over in the club so if you can get 4ghz out of the multi and 2010 out of the blk.. hmmm

Still the price difference of 20$ still not worth it not getting a K chip.. even if u never plan on overclocking.. you never know that could chance a year down the road.
    
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