I've overclocked several 4790k's on different motherboards so I'm familiar with how that works. However, this EVGA z97 Classified has got me completely stumped. Begining to think I have a faulty board.
 
The problem:
 
I manually set the cpu multiplyer to 46 and yet on every reboot cpu stays stuck at 4.0 ghz , which is the non-turbo override setting.
 
   The bios shows it's accepted the overclock "Taget CPU Frequency" says 4600 mhz..but re-boot and its 4.0ghz.
I can get my overclock to 4.7ghz only when EIST/TURBO is enabled with settings like this :
Bios set to Manual Overclock
EIST - Enabled
Turbo -Enabled
Manual
47 core 1
47 core2
47 core 3
47 core 4
40 core ratio
   Whats strange is that sometimes when I first use this setting on reboot, my clocks stay at 4.7 ghz without speedstep working. I reboot... the cpu clocks down to 3.6ghz for no reason. I have to re-save the same  settings in bios to get this clock working with EIST/TURBO in windows.
 
So basically ;
When I turn off EIST /TURBO/C1 and bios says correct target cpu frequency (4.7 but boots at 4.0ghz into windows.
-My power options in windows set to balanced.
-Updated bios to latest.
-Tried older version bios # 2  - same results.
I'm stumped. Any insight would be greatly appreciated!!!
Thanks !
-Glenn
 
 
 
Here are some screenshots of the settings and my current specs:
 
 
Manual overclock settings will not stick. Reboot windows says 4.0ghz

　
 
Only way overclock to stick is to enable EIST/TURBO

 
 
With EIST/TURBO enabled I can see all 4 CLOCKS
 

 
 
 
 
 
4790K @ 4.6Ghz
EVGA z97 Classified
EVGA SuperNOVA 1300 G2
16gb Kingston @ 2400mhz
AMD Radeon R9 295x2 @ 1018/1250
Phillips 242G5 1MS 144Hz
2x Samsung 850 Evo 512gb SSD 3x 2TB Raptor Harddrives
Validation:
http://valid.x86.fr/uba96v
Firestrike Benchmark - 17242
Validation:
http://www.3dmark.com/fs/4719546

Hey thanks ! Wonder if Jacob had EIST set to on. You can see all 6 core ratio limit clocks. I can only see this option when EIST is enabled. This really doesn't help much though. I've set my voltages but in manual mode with eist turned off no overclock sticks. Keeps reverting back to 4.0ghz .

One thing try setting your power option in windows to high performance. This will set the CPU clocks to stay at full performance mode without dropping. 
I overclocked my 4790K to 4.8 adding 100mv to CPU offset voltage. Stable for two weeks no issues. I can see all cores at 48.

glenn37216
Hey thanks ! Wonder if Jacob had EIST set to on. You can see all 6 core ratio limit clocks. I can only see this option when EIST is enabled. This really doesn't help much though. I've set my voltages but in manual mode with eist turned off no overclock sticks. Keeps reverting back to 4.0ghz .

I did not Disabled EIST before on all my Computers, but Now I keep all my rigs Enabled.
If I Disabled TURBO on any of my Computers I could not Overclock any of them.