Can someone check my numbers? i7920 4ghz OC

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What are your settings for 4.4?

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I've read of setups doing both. Some guys on techpowerup forums were seeing more stable vtt with vdroop off.

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I will probably move back to auto config on those things. I stopped my test this morning before I left the house. When I got up, RealTemp was sitting on 98-99C. I felt really uncomfortable letting it continue. When I stopped the test it immediately dropped to about 32C. I don't like what I'm seeing I think. I can add an additional fan in the front of the case. So that's a good start. But I'm also wondering if I'm pushing it too hard on air cooling. Or if the CoolerMaster V8 just isn't enough.

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Well generally I work from home and I could tell you this. But I had to take my car to VW, so I'll let you know when I get home.

Generally speaking, I built this machine for work. (web design, photoshop, some podcast/vidcast recording.) So on a daily basis it is never ever going to be pushed as hard as Prime95 is pushing this chip. But I would like to see 4Ghz on air if I can and have the thing primed for after work gaming sessions.

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Did you test to see if the clock skew was necessary?
Also, is Vdroop compensation enable or disabled?

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Vdroop comp is disabled. I would never turn Vdroop comp on, unless going for extreme DICE/ln2 oc. On air or water, all it does is raise your load voltages.

When i was fine-tuning my oc, i found that 0, 100, 200, and 400ps skew settings made prime fail around the 1/2 hour mark. 300ps did not.

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How many +mV (set in bios) is your Vcore to get your 1.318?
Thanks, I'll check it out. +rep

So I made some suggested adjustments here:

Voltage Control
EVGA VDroop Control (enabled)
CPU VCore ( 1.3125v )
CPU VTT Voltage (+125mV)
CPU PLL VCore (1.80v )
DIMM Voltage ( 1.65v )
DIMM DQ Vref ( +0 )
QPI PLL VCore ( 1.3v )
IOH VCore ( Auto )
IOH/ICH I/O Voltage (Auto )
ICH VCore ( Auto)
PWM Frequency ( 800 KHz)

These crashed in Prime95 in under 15 minutes. My previous settings were stable for 12 hours. Just ran hot.

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try reducing vtt, ioh, ich, ioh/ich down to default

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Dropped VTT to +100mV. Everything else you mentioned was at default.

Ok, I'm getting 3.8Ghz out of this setup. And so far so good on the Prime95 test. I'm tempted to call it square, but my inner tinkerer wants 4Ghz damnit!

I'll edit this with the updated specs. What can I step up at this point to get to 4G's?

Mother Board ( EVGA X58 3X SLI )
Drivers ( )
Bios ( )
CPU ( 920 )
CPU Cooler (CoolerMaster V8)
Memory (OCZ Gold 6GB (3 x 2GB) DDR3 1600)
PSU (Corsair TX850W)
GPU (Radeon HD5850 no OC)
Drivers ( 9.11 )
Operating System (W7)

Frequency Control
CPU Clock Ratio (x 20 )
CPU Host Frequency (Mhz) ( 191 )
CPU Uncore Frequency (Mhz) (x 16 )
Spread Spectrum ( Disabled )
PCIE Frequency (Mhz) ( 100 )

Memory Feature
Memory Control Setting (Enabled )
Memory Frequency ( 2:8 )
Channel Interleave Setting ( 6 Way )
Rank Interleave Setting ( 4 Way )
Memory Low Gap ( Auto )
tCL Setting ( 8 )
tRCD Setting ( 8)
tRP Setting ( 8 )
tRAS Setting ( 24 )
tRFC Setting ( 88)
Command Rate ( t1 )

Voltage Control
EVGA VDroop Control (enabled)
CPU VCore ( 1.3125v )
CPU VTT Voltage (+100mV)
CPU PLL VCore (1.80v )
DIMM Voltage ( 1.65v )
DIMM DQ Vref ( +0 )
QPI PLL VCore ( 1.3v )
IOH VCore ( auto )
IOH/ICH I/O Voltage ( auto )
ICH VCore ( auto )
PWM Frequency ( 800 KHz)

CPU Feature
Intel SpeedStep ( Disabled )
Turbo Mode Function ( Enabled)
CxE Function ( Disabled )
Execute Disable Bit (Disabled )
Virtualization Technology ( Disabled )
Intel HT Technology ( Enabled )
Active Processor Cores ( All )
QPI Control Settings ( Enabled )
QPI Link Fast Mode ( Enabled )
QPI Frequency Selection ( 4,800 GT/s)

Quick Guide to Overclocking an i7

Terminology
•Base Clock (bclk)/Quick Path Interconnect (QPI): basically the x58's version of FSB. The bclk x cpu multiplier = cpu speed. Example: a bclk of 191mhz x cpu multi of 21 = 4ghz.
•CPU Uncore/ VTT: The cpu L3 memory cache and Integrated Memory Controller (IMC).
•CPU Phase-Locked Loop (PLL): The cpu's internal clock generator.
•CPU vcore: cpu voltage
•VDimm: Voltage of the ram.
•VDroop/Load Line Callibration: An Intel cpu voltage safety feature that prevents voltage spikes when abruptly changing between high and low cpu loads.
•IOH: Motherboard Northbridge. Connects the cpu, graphics cards, and southbridge together
•ICH: Motherboard Southbridge. Connects usb, Ethernet, sata, audio, bios, etc to the northbridge
•CxE (enhanced halt state): power saving feature that puts the system into lower power state when idle
•Hyper-Threading (HT): allows cpu to run two processing threads per core, appearing to windows as having twice the actual cores.
•Virtualization: a technology that lets the cpu run multiple operating systems at the same time
•Enhanced Intel SpeedStep technology (EIST): power saving feature that lets the cpu run at lower multipliers when idle.
•PPM: setting to allow cpu to use CxE and EIST features
•Spread Spectrum: setting that reduces electronic interference to meet FCC regulations
•Execute Disable Bit: feature that stop malicious virus/worm from exploiting buffers and doing harm

Rules of Overclocking on the x58 chipset
•Use odd-number cpu multipliers. For reasons unknown, even multipliers are less stable than their odd counterparts
•The uncore/vtt frequency should be twice the speed of the ram for stability reasons
•The vdimm should be 0.5v or less than the uncore/vtt voltage for stability and less stress.
•eist, hyper-threading, spread spectrum, and CxE should be disabled while finding an overclock. With the exception of hyper-threading, all of them can be turned back on once overclock is stable. HT produces significantly more heat and requires more voltage; if heat isn't an issue and over-volting is okay/enough voltage is leftover, HT can be turned back on.

Troubleshooting
•BSOD/blue screen: usually occurs when voltage(s) is set too high or too low, or when the cpu thermal protection kicks in. The stop error code on the blue screen will help narrow down which voltage needs adjusted:

0x00000101= cpu vcore, try raising by .025v (20 - 30mv)
0x00000124= vcore and/or uncore/vtt, try raising uncore/vtt by .25v (250mv)
0x00000116= GPU issue, raise the IOH voltage
0x000000xx= for D0 i7s only, also cpu vcore

•Computer freezes: during bootup, during the windows loading screen, seemingly randomly once in windows, or if it freezes the instant you put a load on the cpu, all mean you have far too little vcore. Up cpu vcore by a significant amount.

•Prime95 failures: also usually occurs when voltage(s) is set incorrectly. When a worker thread fails, more voltage is needed:

Small FFTS= more vcore
Large FFTS= vcore or ram issue. Up vdimm and/or IOH voltage, loosen ram timings
*if vcore, vdimm, and IOH voltage adjustments don't help, try a small bump to the PLL voltage

•Computer restarts: if during stability testing the computer restarts randomly, this is usually because the cpu is overheating. Try lowering the vcore and make sure the block is mounted properly.

Safe Voltage Settings (unless bios says otherwise)
•Cpu vcore: 1.375v and under
•Uncore/vtt: 1.35v and under
•PLL: 1.88v and under
•Vdimm: 1.65v and under
•IOH: 1.3v and under
•ICH: 1.3v and under

Safe Operating Temperatures:
•24/7 operation should be kept under 67.5°c (Intel spec). Community consensus is 85°c is safe for benching and other short-term activities but not for daily operation. The i7 can operate well above 85°c but its lifespan decreases exponentially at that point.

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Don't be sorry. Good stuff there.
I kicked vtt back up to 125. Booted stable. Temp under load at 77C with Prime95 running about 20min.

If it stays stable for the next hour I'll check the numbers against your guide. If that all looks good I'll go for a 24hr Prime95 run and see what happens.

If under heavy load in Prime95 the temps are around 75-80C then I'm not worried about that. No matter what settings I have had, just sitting in Windows I'm running 27-45C which is perfectly fine for daily use.

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decrease vtt until its .48 difference from your ram. So in your case, it would be 1.65-.48=1.17.

Give it a shot.

I found that lower vtt actually gave me better stability. Higher is not always better.