Different multiplier per core broken?

[Horgi]

asus sabertooth z87, bios 1603, 4650K w LuqidMetal under cover.
Main idea come for view results by LinX 0.6.5 in my OC sys.
Core 0 have not more 95C and not going to throtle as diff w other cores.
In my theory, it happy by close to off GPUs crystall square.
So, I think about load +100Mhz for core 0 is a good idea.
But check show me that different multiplayers per CPU cores not work.
in BIOS 44, 43, 43, 43, in system under load 43,43,43,43, just CPU-Z show x43(8-44)

Also check -100 for central cores 1,2 (know, not by rules), set 44,42,42,43,
system under load show main time all cores 42, but sometimes(sic!) cores 0,3 show 43.

/me little bit frustrated...
Is it true for other asus motherboards?

[HiVizMan]

There is no reason to change each core like you wish to do, and I do not even think it is possible to be honest.

Just what are you trying to achieve?

[Horgi]

HiVizMan wrote:
There is no reason to change each core like you wish to do, and I do not even think it is possible to be honest.
Just what are you trying to achieve?

Nothing in practical result, just spend time to have fun for fine tuning my system, and little bit frustrate, if see unexpected results.
So, in BIOS configuration we have: CPU Core Ratio: Options are “Auto”, “Sync All Cores” and “Per Core”
http://rog.asus.com/forum/showthread.php?33488-Maximus-VI-Series-UEFI-Guide-for-Overclocking&p=26975...
My question “Per Core” for what, if, as writed in this thread, we can't achive different ratio limit per core?
Is it bug in BIOS or by design?
Disable ASUS Multicore Enhancement did't change anything.

Update: do the tests on ASRock motherboard, multiplier per core in BIOS config 44,44,43,42
LinX set for 1 thread on core 0 show CPU set for 44, 2 threads - 43, 3 threads - 42, 4 threads - 42
screen shots in this post (sorry, a lot of russian lang, but numbers still arabian, press on +spoiler bold letters 🙂 http://forums.overclockers.ru/viewtopic.php?p=11450564#p11450564

In diff with my asus sabertooth:
LinX 1 thread loaded on core 0 (by task manager) set all 4 cores to freq of minimal set core in BIOS (44,43,43,43). Wout stress loading freq per core asynchronicaly different.
screen shoot here:
https://plus.google.com/u/0/photos/105148563951396301080/albums/5931747656688659873/5950229016421180...

[COLDSTATIC]

i am curious about this as well. basicly my 4th core runs 5-7 degrees cooler then the rest. Also its usually running at 99% more then the others. when encoding you see little dips but the 4th seems to stay higher more often. is there any way i can bump this core higher then the rest?

[HiVizMan]

Nope you can not as far as I know.

[Poco_OM]

Would be cool if you could for squeezing the very last out of the system.

[COLDSTATIC]

So is it an architectural issue with how intel does turbo? Or is it a bios thing? My thinking on this (as flawed as it might be) is that if asus can override the default turbo definitions to make all cores run at same speed you would be able to set the speed for each core individually. Something else i found curious in my experiment is that the high to low order is funny. it goes core 1, 2, 4, 3. so core 1 has to be highest and 3 lowest.

[HiVizMan]

It is an Intel design thing. Set to all cores the same multi is not difficult as that forces the multiplier to be one value with one power register and one power delivery value.

Just spend some time thinking about how Intels Turbo works, it does not ramp up all the cores. It does one for single threads then two and so on.

Interesting discussion none the less.