EVGA x99 Classified latest bios.
I want to change the value from 512.000 to 4095.000 on both.
 
P.S. I tried doing it with the Intel Extreme Tuning Utility but it doesn't seem to be able to save changes in the evga bios.
 
Thank you!

I can not find them under those names. Maybe evga calls them something else?

I remember on my X58 board under the PCI settings there was a setting for PCIe called "Maximum Payload Size".  The default was 128, but it was recommended (for max performance supposedly) that it be set to 4096.  I believe 512 was also one of the options there as well.  Maybe that is what the OP is referring to??

HeavyHemi

bdary
I remember on my X58 board under the PCI settings there was a setting for PCIe called "Maximum Payload Size".  The default was 128, but it was recommended (for max performance supposedly) that it be set to 4096.  I believe 512 was also one of the options there as well.  Maybe that is what the OP is referring to??

He's referring to the  turbo boost modes. If you look in AIDA64 you will see these values under the CPUID section:
 
Field    Value
CPUID Properties    
CPUID Manufacturer    GenuineIntel
CPUID CPU Name    Intel(R) Core(TM) i7-6850K CPU @ 3.60GHz
CPUID Revision    000406F1h
IA Brand ID    00h  (Unknown)
Platform ID    4Ch / MC 04h  (LGA2011-v3)
Microcode Update Revision    1Ah
HTT / CMP Units    2 / 6
Tjmax Temperature    95 °C  (203 °F)
CPU Thermal Design Power    140 W
DRAM Thermal Design Power    36.8 W
CPU Thermal Design Current    Unlimited
CPU Max Power Limit    Unlimited Power / Unlimited Time
CPU Power Limit 1 (Long Duration)    4095 W / 8.00 sec  (Unlocked)
CPU Power Limit 2 (Short Duration)    4095 W / 7.81 ms  (Unlocked)
Max Turbo Boost Multipliers    1C: 45x, 2C: 45x, 3C: 45x, 4C: 45x, 5C: 45x, 6C: 45x
   

Ok.  I do see those value's.  Thanks...

valzero
So does anybody know? I called tech support and apparently this was available in my BIOS at some point on the main screen under CPU, judging by their documentation (really old docs never updated).  There's very little info about evga O/C on the web. Not even youtube videos by the manufacturer with basic O/C.

As far as I know, there never has been a way to adjust this in the BIOS. There are some settings that you can use with using intel's XTU app that are not exposed in the BIOS GUI.
 
"
Some important notes:
1. The settings available in XTU are dependent on what your systems BIOS exposes to the tool.  The settings available in the XTU may be different on your system.
2. Be sure to clear the CMOS on your system before using XTU to correct the BIOS settings.  See the documentation for your motherboard for instructions on clearing the CMOS.
3. The voltage, power and current settings that will work for you may vary.  See the section titled Customer Reported Settings for additional information."
 
https://communities.intel.com/docs/DOC-23517
 

So i finally found a solution to my problem. All i had to do was get a real overclocking motherboard. 

That's BIOS of Rampage V Extreme? 
Why is not EVGA motherboard good for OC?
 
 
 

deathlokke
And yet all of the top 3DMark Time Spy and Fire Strike scores were set with EVGA motherboards. Too bad they aren't any good for overclocking.