What controls Turbo Core in Xeons?

[txgy]

In windows directory search for “mcupdate_GenuineIntel.dll" you will found two rename or delete

Then use VMWare tool: https://labs.vmware.com/flings/vmware-cpu-microcode-update-driver and click uninstall to remove the microcode

With no microcode your cache will not go any higher than 2300 under heavy load. CB R15 shows this anomaly. With a microcode it will boost to the maximum (my case 3000). This has been discussed a few pages back.

Example
My 2696 will score 2925 with ucode 27 (any ucode really) with an all core turbo of 3300mhz and cache at 3100mhz. Without a ucode it will run at 3400mhz but cache will only be running at 2400mhz and score only 2800. Both examples running an 104.5 BCLK overclock.

My take out of this is:
If your workload does not use AVX instructions set run a ucode. However if it does and is stable without a ucode run without one. If a program fully takes advantage of cache, in my findings for every 500-600mhz is equal to 100-150mhz clock speed. Since running without a ucode under AVX loads it will only throttle by 100mhz as apposed 500mhz running a ucode. Making the cache deficit up.

have you ever test corona or linx or x265benchmark, can 2696 run at 3.1ghz or better when avx2 heave load ?

 

[sciff]

txgy, I have tested E5-2696 V3 R2 in Corona, if no microcode is used, it can run at 3.3GHz no problem whatsoever. See my previous posts, there were screenshots.

 

[txgy]

txgy, I have tested E5-2696 V3 R2 in Corona, if no microcode is used, it can run at 3.3GHz no problem whatsoever. See my previous posts, there were screenshots.

THANKS
but itou31 only get 2531 score when running R15, how about yours?

 

[sciff]

txgy

Spoiler: I get 2741 in Cinebench

 

[itou31]

Hi sciff,
I think that each CPU has not similar multiplier (or also depending on OS) I have windows 10 pro and windows 8.1 pro.
you can go up to x33, I stay at x32. The uncore is slower as said by GTZ when no microcode.
I did not test the 3_2_cup.EFI that set max uncore.
I rechecked also all the BIOS settings you provided, no difference.
I'm happy with this rig, but as all of us here, we are geek and overclockers .... and still finding something to play with and share.

 

[GTZ]

Just wanted to point out not all systems are the same. Even if you have the exact same motherboard/CPU combo, there are other variables that are at play. As we have seen with all of our systems.

For instance ajschot's system, I honestly don't know why my setup can sustain higher turbos since we share the same motherboard and processor. At that point I want to say cooling, power supply, and probably the CPU itself is taken into consideration.

Even though we both run 2696, mine might run at lower volts and run cooler allowing it to turbo higher. Also my power supply is complete overkill for my setup (EVGA 1300W G2), maybe it could provide cleaner power. The 2696 under AVX load can reach 300W (maybe higher). CPU cooling as well, I run a 280 AIO.

Don't try to compare one system to another even though they are similar setups. All we can do is help each you reach the maximum your system can reach.

At the end of the day wether your particular processor turbos to 3.0 or 3.4 all core, it is a huge step from the 2.4-2.8 it was with out the mod.

Also Dufus (we owe that dude a lot for bringing this to light) mentioned at another forum that if we were to experiment with the BIOS we should be able to release any restriction theoretically hit the max core turbo on all cores. Not having the need for the EFI driver. I personally never tinkered this deeply with the BIOS, so I am completely green when it comes to this. I will say this though, if the 2696 was able to run at 3.8 on all cores it will need beefy VRMs.

 

[xma]

For my system maybe because I am not using V3 hack when running R15 the cache multiplier drop to x12 with no cpu microcode cpu runs at 32x . Normal use and idling cache stays at 30x. in the bios changing the cache ratio min to 30x instead of auto now when running R15 cpu runs at 31x and cache runs at 23x. I got much better score in R15.

 

[txgy]

hi,
I do some test using v3_2.cup.efi, there is on cpu microcode in bios and system:

LINX score:
550 GFLOPS
cpu 27x uncore 23x cpu vid 0.9178 (computing time)

prime95 28.7
three status

1. cpu 30-31x uncore 30x cpu vid 1.0024-1.027
2. cpu 28-29x uncore 30x cpu vid 0.943-0.9728
3. cpu 26-28x uncore 23x cpu vid 0.89-0.92

X265 benchmark 0.1.4
cpu 30-31x uncore 30x cpu vid 1.0024-1.027
score: 35.94fps 35.73fps 35.75fps 35.79fps
original: 30.65fps 30.77fps 30.68fps 30.64fps

do anybody know how to uninstall bcfg driver ? ? ?

 

[itou31]

Thanks txgy for testing.
to remove bcfg driver, see post #62 page 3 from Dufus.

 

[rottwag]

Hi everybody,

Still running on 33x105,9 all core... After approx 20 hours of playing watch dogs 2, I had one crash during playing:

Suddently, keys+mouse+sound stopped working but the game continued running (cars driving around) somehow.. only way to restart computer was to push the power button for some seconds.

During the BIOS post, the BIOS said "overclock failed".

My question is now: was this crash related to my BCLK overclock? Or was it related to the modded microcode that does not run 100% stable?

How could I check the stability of my BCLK overclock? Such tools as prime linx do not work, I guess?

Cheers Andy

 

[lucien_br]

My 2669v3 x31 all 12 core. Successful:
https://www.youtube.com/watch?v=Zo_yKRUCCkU

 

[sciff]

How could I check the stability of my BCLK overclock? Such tools as prime linx do not work, I guess

rottwag, you could test BCLK overclock by uninstalling EFI driver (thus disabling the turbo unlock) and then testing your processor with Prime95's 'Torture Test', it's the toughest out there, it literally fries your CPU. Just make sure that you have some kind of microcode loaded through VMWare driver or by Windows itself.

Running it for hours is unnecessary, I would say that 5 minutes is enough, since there are no real applications that come even close to 'Torture Test' in stressing the CPU. If your CPU can handle 5 minutes of it, then BCLK is not the problem here.

 

[lucien_br]

Hi everybody,

Still running on 33x105,9 all core... After approx 20 hours of playing watch dogs 2, I had one crash during playing:

Suddently, keys+mouse+sound stopped working but the game continued running (cars driving around) somehow.. only way to restart computer was to push the power button for some seconds.

During the BIOS post, the BIOS said "overclock failed".

My question is now: was this crash related to my BCLK overclock? Or was it related to the modded microcode that does not run 100% stable?

How could I check the stability of my BCLK overclock? Such tools as prime linx do not work, I guess?

Cheers Andy

Probably BClk or memory causes the crash. I never pass ~103Mhz on my clock and various CPUs works fine with mod. 2686v3, 2669v3 and 2683v3:

https://www.youtube.com/watch?v=Faae3_Tdtfw

https://www.youtube.com/watch?v=5GlR1IlgM3g

https://www.youtube.com/watch?v=Zo_yKRUCCkU

 

[sciff]

With turbo unlock alone we get such a performance increase, that I, personally, don't see any point in additional overclocking. Increasing the BCLK can make the system unstable. Additional 3-5% are barely noticeable anyway.

 

[rottwag]

Ok, I will try prime torture test and report.

I used to run 105,9 since I have the CPU - so for months before knowing this thread.

I was happy to have 2,65 instead 2,5 Ghz at that point of time.

I always use linx for 10 runs ( takes 90 minutes or so) to test stability. I worked with all my overclocked in the past...

...We will see what comes out with prime torture...

Thanks Andy

 

[rottwag]

Update:

I let prime run for 15 minutes each test: Small FFTs, In-Place large FFTs, Blend ....no errors
CPU clocked 29x 105,9 = 3070 Mhz on all 8 Cores (+8 SMT), max Temp 62°C

Maybe the game simply crashed...

 

[SlaterTh90]

Hello im new here.

I have an Asus Z10PE-D16 and two E5 2620 v3 processors. I think those processors should be able to run 3.2Ghz on all cores all the time using this mod.

I am a bit confused to what guide i have to follow in order to remove the microcode from my bios.
Can anyone give me the postnumber of the correct guide?

 

[txgy]

I am thinking about turn off HT to get 3.8ghz all core.
but I failed to do this, what controls the max turbo core with HT on/off ?

 

[Alex S]

Finally, i got x29 for all cores on E5-2686 v3 on MSI X99A Raider. (V3.EFI, 0x27 microcode) If i use balanced power plan, frequency can go higher up to 3,5 GHz (x35), but only for few cores. Is there any way for E5-2686 v3 to set multiplier x32-33, i'm not speaking about x35, seems it's impossible (disabling HT method only gives 29x or LFM 800 MHz). What else can i do to increase multi-core frequency? BCLK 105 is unstable (and 10G Mellanox card even refused to work).

 

[knopflerbruce]

Just a thought, it might be a good idea to have like a small database wth all the BIOSes, så people easily can get the right one for their system

Testing my 2686 + X99 OC Formula combo later this week.

 

[RolloC612]

This morning i tried again.
i flash with ubu, the bios again
i goes to bios to flash my new bios do with ubu
flash was ok
but i cant boot , the motherboard was blocked at 94 number on motherboard
you know, during the boot on the motherboard are displayed some numbers
mine was blocked at 94 and i failed!
can you tell me why?

On what slot is your video card installed in ?

have had stuck on code 92(debug led) with moded bios(removed microcode) on MB ASRock X99M Killer
After hours of wasting time i reseted my video-card to PCIe slot#1, it was on slot#3 because the BIG cooler....with same modded bios
video card in slot#3 = error 92(stop)
video card in slot#1 = POST into Bios very well...
seems V3 without mcu have problems with no device on first pcie slot

so my bios mod works only with video card on first pcie slot

 

[RolloC612]

my board was in 3 rd slot, now in first
my board was in 3 rd slot, now in first
not the video card is problem, the way you made the bios

and work your bios with video card in 3rd slot now ?

 

[Alex S]

Just a thought, it might be a good idea to have like a small database wth all the BIOSes

Totally agree, if needed, will upload version for X99A Raider.

 

[z9main]

Hey,
I have a Z10PE-D8 WS and 2x 2683v3's. Can anything go really wrong with this mod? Does this work with Ubuntu too? Does anyone have a stable setup like mine with the unlock?

 

[XDrego]

would love an upload for msi raider Alex have 2 e5-2683 v3 Oem to try maybe little guide if you can spare the time thanks!