So the older Rev. 19 may require less voltage to achieve the same overclock for some CPU steppings, correct? How much less voltage? 0.01v? or 0.1v? 0.1v would be a BIG deal!
Maybe the reason it does that is because it increases voltage without telling you and Rev. 1B shows true voltage? ASUS motherboards tend to do that on their own. When I set voltage to 1.30v, real voltage is 1.31v. Maybe its the same with Rev. 19. I am just curious if the Rev. 19 could possibly improve my overclock that is already high @ 4.8Ghz @ 1.31v. Is there any info on which steppings the Rev. 19 benefits the most??? What about temperatures? Does Rev. 19 run hotter than Rev. 1B?
Here’s my CPU info in extreme detail - is it one of those that can benefit from Rev. 19?
Thank you fro such prompt feedback and support!!!
EDIT by Fernando: Unneeded quoted text deleted (to save space and performance)
Hello MonarchX! It’s a long reply that i’ll have to prepare for you and i’ll prefere to send it by PM because we will risk to get off topic.
Now i’m not at home but this evening i’ll send you a PM.
Cheers,
KK
EDIT by Fernando: Not really needed fully quoted text deleted (to save space and performance of this important Forum thread)
Note: Splitting this thread and starting a separate one with the topic “CPU Microcode BIOS modding” may be indeed a good idea. Shall I do it for you?
Hello!
Have the following problem:
I have the latest BIOS (1603) for the (VI MAXIMUS GENE) made up, but now my overclocked Xeon 3.5GHz e3-1230v3 only with what is probably the MICRO CODE UPDATE.
Now I wanted the old version (BIOS 1402) back on it but do not go 
Unfortunately, I have no idea about the matter and wanted to ask if any of the hereby Bios 1603 could customize with old microcode.
I hope you can help me here
Thank you ever!
EDIT by Fernandoi:
Here is the link to the BIOSes for BHM’s mainboard: http://www.asus.com/de/Motherboards/MAXIMUS_VI_GENE/
@ BHM:
Welcome at Win-RAID Forum!
The intention of this Forum is to help users to modify their BIOS, but not to do it for them. That is why you will find a lot of guides within this Forum.
Neveretheless I hope, that someone from our CPU Microcode experts will show you a way how to solve your problem.
Regards
Fernando
P.S.: I have deleted your German language post and my answer to save space within this already very voluminous thread.
@ BHM
If I understand you correctly, you want to get the new BIOS version 1603 which is the old Microcode version 12?
First many thanks for your effort
believe is the CPU-Patch x7 but I’m not sure
Thank you
sorry for the english
Thank you! Can’t wait to read it!
@ all:
Since the UBU Tool thread has meanwhile more than 1.000 posts, it is not easy for the visitors of my Forum to find the posts with the topic "CPU Microcode modding".
That is why I decided to split the UBU Tool thread and start a separate one with the topic "CPU Microcode BIOS modding questions/problems".
If I should have missed to move an important UBU Tool post regarding the manual CPU Microcode modding, please let me know it.
Regards
Fernando
Since I have created a new thread with the topic "CPU Microcode BIOS modding questions/problems" and moved the related posts from the UBU Tool thread into the new one, your discussion with MonarchX is not off-topic anymore.
So it would be fine, if you post your PM text into this thread. This way all interested users may benefit from your knowledge and findings.
Thanks in advance!
Fernando
Since I have created a new thread with the topic "CPU Microcode BIOS modding questions/problems" and moved the related posts from the UBU Tool thread into the new one, your discussion with MonarchX is not off-topic anymore.
So it would be fine, if you post your PM text into this thread. This way all interested users may benefit from your knowledge and findings.
Thanks in advance!
Fernando
@Fernando
@MonarchX
Thanks Fernando for having redirected to a dedicated thread for this topic.
At the moment I’m very busy with jobs that have upcoming deadlines but as soon as I have the right spare time necessary to deepen the questions of MonarchX, i’ll respond in a thorough and exhaustive as possible and compared to my knowledge and experience.
Cheers,
KK
So I checked my Gigabyte Z77 system’s BIOS Microcodes and this is the result:
As far as I know, you are not supposed to have multiple microcodes with the same CPUID. Also, this is a SB/IV system. So why do OEM’s keep duplicates & crap (like Nahalem ids) in there?
06A7_28 & 06A9_19 is the best for overclocking so I’ll keep these intact. What about everything else? 06A1-06A5 seem useless (Nahalem if I’m not mistaken). 06A6 is only relevant for a SB ES/QS processor. I don’t know about 06A8.
What should I keep and what to remove?
I think different revisions for one CPU ID can be in the BIOS. Although it is useless. I ended up removing all updates not related to my CPU.
I did some searching at cpu world and basically
06A1-06A5 are Nahalem CPUID’s → useless for Z77
06A6 is only for mobile i7-2720QM SB ES/QS cpu → useless for Z77
06A8 is only for some mobile IVB ES/QS cpus → useless for Z77
So I will leave only 06A7_28 and 06A9_19
Alternatively, this is done automatically by UBU (leaves only 06A7 and 06A9).
So the older Rev. 19 may require less voltage to achieve the same overclock for some CPU steppings, correct? How much less voltage? 0.01v? or 0.1v? 0.1v would be a BIG deal!
Maybe the reason it does that is because it increases voltage without telling you and Rev. 1B shows true voltage? ASUS motherboards tend to do that on their own. When I set voltage to 1.30v, real voltage is 1.31v. Maybe its the same with Rev. 19. I am just curious if the Rev. 19 could possibly improve my overclock that is already high @ 4.8Ghz @ 1.31v. Is there any info on which steppings the Rev. 19 benefits the most??? What about temperatures? Does Rev. 19 run hotter than Rev. 1B?
Here’s my CPU info in extreme detail - is it one of those that can benefit from Rev. 19?
Thank you fro such prompt feedback and support!!!
EDIT by Fernando: Unneeded quoted text deleted (to save space and performance)
Here’s the post I lost! I did not realize it was split from the main topic! So, back to the same question. Would the 6A9-19 CPU Microcode affect my Ivy Bridge CPU overclock, based on the GPU-Z info I provided? I never got that long PM…
@MonarchX
Hello, as you have read Fernando have redirected to a dedicated thread for the topic of your interest about CPU Micro-code.
As stated in the previous post, at the moment I’m very busy with jobs that have upcoming deadlines but as soon as I have the right spare time necessary to deepen the questions you posted, i’ll respond in a thorough and exhaustive as possible and compared to my knowledge and experience.
Thanks in advance for your patience. 
Chee
So the older Rev. 19 may require less voltage to achieve the same overclock for some CPU steppings, correct? How much less voltage? 0.01v? or 0.1v? 0.1v would be a BIG deal!
Maybe the reason it does that is because it increases voltage without telling you and Rev. 1B shows true voltage? ASUS motherboards tend to do that on their own. When I set voltage to 1.30v, real voltage is 1.31v. Maybe its the same with Rev. 19. I am just curious if the Rev. 19 could possibly improve my overclock that is already high @ 4.8Ghz @ 1.31v. Is there any info on which steppings the Rev. 19 benefits the most??? What about temperatures? Does Rev. 19 run hotter than Rev. 1B?
Here’s my CPU info in extreme detail - is it one of those that can benefit from Rev. 19?
Thank you fro such prompt feedback and support!!!
EDIT by Fernando: Unneeded quoted text deleted (to save space and performance)
Here’s the post I lost! I did not realize it was split from the main topic! So, back to the same question. Would the 6A9-19 CPU Microcode affect my Ivy Bridge CPU overclock, based on the GPU-Z info I provided? I never got that long PM…
Hello MonarchX! Let’s start with a basic information about your configuration e.g. CPU-Micro Code because from your screenshot is not available and to know it you can download, execute and take a screenshot of HW Info (System Summary): http://www.hwinfo.com/download.php
Cheers,
KK
Just a small addition to CPU microcode modding on new BIOSes for Haswell/Broadwell/Skylake platforms: all microcode binaries are now referenced in a special Firmware Interface Table (read more here, it’s the only open document I can found), which can be found by searching for non-Unicode text “FIT” in the BIOS file.
If you remove, move, replace a microcode with a file of different size and somehow other tinker with microcodes on a BIOS with FIT, you need to calculate and adjust addresses there. And, if FIT has entries of any other types then Microcode (0x01), you are pretty much done here, because such BIOS is not moddable anymore. I can’t say more because of NDA, but please read the document linked above, while it’s still available.
OK, here is the CPU screenshot from HWiNFO (latest beta):
HERE is the saved report from HWiNFO (latest beta).
OK, so far I used the latest CPU Microcode for BIOS, NOT the one for overclocking. All I would like to know whether the CPU Microcode for overclocking can provide any overclocking benefit for my specific CPU.
OK MonarchX, as you stated you are using CPU Micro-code Rev. 1B for Ivy Bridge and from my experience on different motherboards of different producers, the Rev. 19 is better because at the same level of OC with the same HW, cooling system and BIOS code it is needed less VCore to maintain stability achieved.
An example: One of my i7 3770K is stable @4,5Ghz on a Gigabyte Z77X-UP5 TH with 1,15V with F12J BIOS and CPU Micro-Code Rev. 19 but when i’ve modded the F12J with the Rev. 1B i lost stability and to regain it i’ve upped the VCore to 1,155V.
I’ve tested Gigabyte, ASUS, MSI and ASRock motherboards on Z77 chipset and all the tested MoBos, except ASRock, with BIOSes with Rev. 19 of CPU Micro-code performed better than the same BIOSes but with Rev. 1B of CPU micro-code.
ASRock is the only producer that with modded BIOSes with Rev. 1B of CPU micro-code worked better than Rev. 19… 
The only way for your rig is to try the same BIOS version modded with Rev. 19 of CPU Micro-code and check the stability with less VCore e.g. 1,305V.
The little difference of 0.005V may not seems a big vantage but when you’re @ the limit of the OC by the temperature or VCore that you feel safe for you system, every little drop (temperature or voltage) may help. 
Try it and let us know if you’ll benefit or not.
Have a nice week-end!
Cheers,
KK
Thanks for the explanation! I will definitely try and let you know. I shall de-lid my CPU and get Swiftech H240-X AIO WC (very low temps) soon to try to reach 5Ghz. This CPU Microcode may be the key!