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Overclocking non-K Haswell?

W

willomz

Senior member
On Ivy bridge non-K processors allowed limited overclocking by 4 cpu bins (400mhz) over standard turbo frequencies. Apparently this is no longer the case:

http://www.hardware.fr/articles/897-6/overclocking-plus-libre-k-plus-strict-par-ailleurs.html

Does anyone have confirmation of this? Maybe it's just the test motherboard that was shipped out to reviewers?

Or can you overclock using the CPU strap as this review suggests?

http://hexus.net/tech/reviews/cpu/56005-intel-core-i7-4770k-22nm-haswell/?page=16
 
Ivy non K is faster than Haswell non K... :thumbsdown:
now the i7s/i5s are as locked as i3s (and lower) already were since Sandy Bridge.
 
ShintaiDK said:
No...

Only way you might get that is if the IB uses a multicore boost board that auto OCs turbomodes.
Click to expand...

so,
yes...

or you can set manually on ivy/sandy bridge, and you cannot on Haswell.
200-400MHz more should be enough to beat Haswell for most things.

the funny thing is, there is one less reason to buy a Z motherboard if you are not buying the K CPU.
 
Last edited:
SPBHM said:
so,
yes...

or you can set manually on ivy/sandy bridge, and you cannot on Haswell.
200-400MHz more should be enough to beat Haswell for most things.
Click to expand...

True. This is just a bizarre thing to worry about though.

Limited OC of Ivy non-K only happens with good boards on custom builds. I would think that a large majority of OC'ers just go for the real deal and get the K in the first place, and with pre-built HP/Dell/etc, you can't overclock anyway. It's not like the K series is a lot more expensive.

However, the point is more valid with i3s. I imagine some people building i3s currently like being able to do some minor overclocking, and in that case i3 Ivy should be faster than i3 Haswell after overclocking, outside of the very rare/specific cases where Haswell IPC is notably higher.
 
SPBHM said:
so,
yes...

or you can set manually on ivy/sandy bridge, and you cannot on Haswell.
200-400MHz more should be enough to beat Haswell for most things.

the funny thing is, there is one less reason to buy a Z motherboard if you are not buying the K CPU.
Click to expand...

You will never get more than 200Mhz. And 200Mhz will not make IB beat Haswell in the higher end.

Z boards never made reasons if you didnt buy K models in the first place.
 
Arkaign said:
True. This is just a bizarre thing to worry about though.

Limited OC of Ivy non-K only happens with good boards on custom builds. I would think that a large majority of OC'ers just go for the real deal and get the K in the first place, and with pre-built HP/Dell/etc, you can't overclock anyway. It's not like the K series is a lot more expensive.

However, the point is more valid with i3s. I imagine some people building i3s currently like being able to do some minor overclocking, and in that case i3 Ivy should be faster than i3 Haswell after overclocking, outside of the very rare/specific cases where Haswell IPC is notably higher.
Click to expand...

the price difference at the moment is $60 (i5 i5-4430 to 4670K),
It's hard to have any hopes for a cheaper unlocked CPU from intel at the moment.



ShintaiDK said:
You will never get more than 200Mhz. And 200Mhz will not make IB beat Haswell in the higher end.

Z boards never made reasons if you didnt buy K models in the first place.
Click to expand...

I totally disagree, the difference can easily be bigger than 200Mhz,

and there were plenty of lower cost Z75/Z77 MBs that made sense with a cheaper i5, and you could get some overclocking done,
tomshardware used this to an advantage for their $600 gaming PC,
http://www.tomshardware.com/reviews/pc-gaming-overclock-build-a-pc,3443-7.html

that was a 3.1-3.3GHz working at 3.5-3.7GHz which makes it as fast as more expensive models.

another example of a free extra 10% of performance with locked ivy
http://www.anandtech.com/show/5871/intel-core-i5-3470-review-hd-2500-graphics-tested
 
I have the 4570 (non-K) version. What's the normal temperature for an i5 cpu? Mine seems to be around 55-56C idle in UEFI/BIOS, is that normal?

I'm running on an mATX board, no fan at the moment..
 
T_Yamamoto said:
thats a fine temp.
Click to expand...

Do you think it's ok to keep it that way, or should I get some fans? I'm running it on a mATX board/case (a bit crampy but there is space for 3 80mm fans), Asus B85-G and HD7850. I haven't ran any games yet, just installing OS at the moment

All new build and I havn't upgraded in 5 years so I'm really not sure..
 
closencounters said:
Do you think it's ok to keep it that way, or should I get some fans? I'm running it on a mATX board/case (a bit crampy but there is space for 3 80mm fans), Asus B85-G and HD7850. I haven't ran any games yet, just installing OS at the moment

All new build and I havn't upgraded in 5 years so I'm really not sure..
Click to expand...
What kind of case? Recent cases don't use 80mm fans anymore.

A cheap matx case is the Fractal Design Core 1000, it has USB 3 and it is quite nice
 
Intel probably figured with thermal thresholds set at artificial lows that nobody would buy k chips if you could just use the bclk.

Or maybe it just has something to do with the additional features that aren't present on the k versions.

*shrug*
 
T_Yamamoto said:
Well duh. Intel has disallowed bclk over clocking since SB. They brought it back for Haswell and its only for the K series
Click to expand...

And it's lame.

Overclocking used to be about squeezing value out of every cpu part you could afford, not "you can't play unless you dump wads of money on top parts".
 
T_Yamamoto said:
Well duh. Intel has disallowed bclk over clocking since SB. They brought it back for Haswell and its only for the K series
Click to expand...

Intel is pretty lame. Taking out the limited extra turbo bin unlocking, and limiting BCLK unlocking to "K" SKUs, when they also have an unlocked multi.

So much for Haswell being an overclocker's chip.
 
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