I recently upgraded from an x58 sli3 (e758) to an x58 ftw3 (e768). The reason I switched was somehow I bent some cpu pins on the sli3 and lost 2 dimm slots and 2 fan headers. The first ftw3 I got would not tolereate any kind of mild overclock. It needed +300 vtt just to hit 3.2 - this seemed way too high and I didn't keep it like this. Dummy OC did not even work. So I RMA'ed it and went back to the sli3. The replacement board I received does much better but still can't touch the sli3. These are my overclock settings for the sli3 and they have been running great for about a year: 
 
i7 930 @ 4.02 GHz (hits about 79c under full load)
6x4gb g-skill ddr3-1600 (is on evga board compatibility list)
Xigmatek dark knight air cooler
 
Multiplier: 19X
BCLK: 212
MCH strap: Auto
CPU Uncore: Auto
CPU clock skew: 0 ps
IOH Clock skew: 0 ps
Spread Spectrum: Disabled
PCIE frequency (MHz): 100
OC recovery: Disabled
Turbo performance: Enabled
 
Speedstep: disabled
Turbo mode function: disabled
cxe function: disabled
Execute disable bit: disabled
VT: enabled
HT: enabled
Active cores: all
 
Vdroop: with vdroop
Vcore: 1.3625
VTT: +175
CPU PLL Vcore: 1.65
Vdimm: 1.525
DIMM VQ ref: +0
IOH Vcore: 1.1
ICH I/O: 1.5
ICH Vcoe: 1.1
PWM freq: 800 khz
 
RAM divider: 2:8 (1067mhz)
ram freq: 1698 mhz
9-9-9-24 (rated timings)
 
Now, I figured these settings might or might not just work on the ftw3. They do not. BSOD 101's immediately in p95. I decided to start over (from stock settings). I got bclk up to 164 on stock everything. Then I started getting 101's again so I kept increasing the vcore up until 1.38 and I decided not to go higher. this got me to 3.7 ghz (bclk of 177). I still kept getting 101's, never any 124's. I tried lowering cpu pll vcore from 1.8v to 1.65, no effect. I increased vtt repeatedly up to +175, same result, still getting 101's. I tried bumping up the other values up to closer to what I had on the sli3 but nothing had any effect. I don't want to increase vcore past 1.38, especially since the voltage requirement on the sli3 was so much lower. I will post an exact bios template for 3.7ghz when I get home. Any ideas would be greatly appreciated! 
 
FWIW, I did bench test the sli3 and used the voltage reading points, the actual voltages reported by the multimeter were lower than what e-leet said (I assumed this was vdroop in action, or deliberate action of e-leet to prevent people frying components). I have not yet done this with the ftw3. 
 

Many of my boards have had issues over 200 host freq, why Gimp your 930 to a 19X and try to push to 212, when a 21 at 200 would actualy be faster besides your 1600 memory would respond better with a 2:8 at 200, for spec speed than trying to push 8*212 for 100 hz over spec. Also note Turbo Performance is a 980 feature the one you want is Turbo mode, which only works at stock CPU multaplier 21 I think for a 930.

I got up to a BCLK of 174 (x21) and vcore of 1.38, vtt at +0 through +175 no matter what I did I kept getting 101's when I tried 177. I will post a bios template as soon as I am able. Thanks!

OK, here is my bios template for 177x21 (not stable, still gives 101's):
 
This is what I have gotten up to by following standard overclocking procedure (bumping vcore for 101, vtt for 124, etc)
 
Multiplier: 21X 
BCLK: 177
MCH strap: Auto 
CPU Uncore: Auto 
CPU clock skew: 0 ps 
IOH Clock skew: 0 ps 
Spread Spectrum: Disabled 
PCIE frequency (MHz): 100 
OC recovery: Disabled 
Turbo performance: Disabled
  
Speedstep: disabled 
Turbo mode function: disabled
cxe function: disabled 
Execute disable bit: disabled 
VT: enabled 
HT: enabled 
Active cores: all 
  
Vdroop: with vdroop 
Vcore: 1.38125
VTT: +0
CPU PLL Vcore: auto 
Vdimm: 1.525 
DIMM VQ ref: +0 
IOH Vcore: auto 
ICH I/O: auto
ICH Vcore: auto
PWM freq: 800 khz 
  
RAM divider: 2:8 (1067mhz) 
9-9-9-24 (rated timings) 

Wow I find it hard to belive you had no issue with 24G of memory with No Vtt add. I needed +275 for 12G of Mushkin Redline it may help that your using low voltage memory 1.5V where I was using the 1.65V stuff. I would still try a +100 to to +150 just to see if it has any affect on your BSOD's and stabality, Just because I have never seen that much memory not require any sort of boost, despite the fact that your getting 101's insted of 124's. You may also want to change uncore from Auto, to 16X, that is where auto should be setting it, I just perfer the manual entrey over auto, Because then I know for shure what it's doing. Also this may add a little heat to the Vregs, but changing the PWM freq from 800 to up to the next higher freq may give you more stabality, this affects how smooth your voltage is, and how often your voltages attempt to regulate, smoother voltage can have an affect on OC ability. PWM stands for Pulse width Modulation, PWM, is a technique for getting analog results with digital means. Digital control is used to create a square wave, a signal switched between on and off. This on-off pattern can simulate voltages in between full on (5 Volts) and off (0 Volts) by changing the portion of the time the signal spends on versus the time that the signal spends off. The duration of "on time" is called the pulse width. To get varying analog values, you change, or modulate, that pulse width. If you repeat this on-off pattern fast enough with an LED for example, the result is as if the signal is a steady voltage between 0 and 5v a higher frequency means it corrects and adjusts faster, this also causes more heat.
( Note : you did not need the added information, or defanition, But thought you may enjoy it, if not disregard it )

Thanks for the info. 
 
I tried your suggestions (+150 vtt, 16x uncore), I get immediate failure with 933 khz pwm. It's not a BSOD, but rather a hard lock. I am suprised to see this because with the lower BCLK and 2:8 divider, my ram is running significantly below spec.
 
I have gotten 177x21 more stable than before (it survived 5 minutes of p95) with turbo mode on by turning vdroop off (and setting vcore to 1.2875)
 
Why do you suppose the requirements vary so much from the E758 to E768? I was running the same CPU at 212x19 just perfectly (with the original bios template), with the same ram at 1698 mhz (2:8)...