i7 24/7 overclocking spectations?

FuryBlocks

FuryBlocks

FuryBlocks

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21 Jul 2008
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41
Hi, I have been using 100% of my CPU power for 3d Renders

My Setup is:
Antec Senven Hundred
i7 920 D0 (Akasa NERO) overclocked to 3100Mhz before Summer (now at stock)
OCZ Gold 6GB (6x2GB) DDR3 PC3-12800C8
Gigabyte GA-EX58-UD4


I'm using all the Memory Slots I have 12GB of RAM
I having Issues with the Overlcloking that's why I stop in 3100,
no problem with 6GB I'm Sure Can Go a bit high


I would love to have my setup running 4000Mhz 24/7
what are you recomendations?
1) Water Cooling?
2) Better Air Cooling?
3)Change my CPU to a coolest one?
4) Change Mother board to GA-EX58-UD5 ( Mobo need to be GigaByte)
5) Change Memory?

I think I can only afford around £200 at the moment

Thanks
 
Before spending any more money what have you actually tried to increase the overclock? What settings have you tried in the bios etc

I'm 99% certain you won't need to spend a penny to get that overclock a LOT higher
 
thanks for you help, I would like to have you next to me tweeking the Bios ;). I follow the Gygabyte Guide for overclocking. Do you know a good guide or resource for me?

I Manually set my memory as OCZ specifications
8-8-8-24 and voltage 1.6-1.7v

What do you think are i7D0 good voltages for
CPU Vcore, QPI/Vtt and CPU PLL?
 
my problem is when I use the 6 Slots now with 3 slots I can run with out problem:

Advanced CPU Features
-----------------------------
CPU Clock Ratio [20x]
Intel(R) Turbo Boost Tech [Enabled]
CPU Cores Enabled [All]
CPU Multi Threading [Enabled]
CPU Enhanced Halt (C1E) [Enabled]
C3/C6/C7 State Support [Enabled]
CPU Thermal Monitor [Enabled]
CPU EIST Function [Enabled]
Virtualization Technology [Disabled]
Bi-Directional PROCHOT [Disabled]

Uncore & QPI Feature
--------------------------
QPI Link Speed [x36]
Uncore Frequency [x21]
Isonchronous Frequency [Enabled]

Advanced Clock Control
-----------------------------
standard clock control
Base Clock (BCLK) Control [Enabled]
BCLK Frequency (MHz) [160]
PCI Express Frequency (MHz) [AUTO]
C.I.A.2 [Disabled]

CPU Clock Drive [ 800mV]
PCI Express Clock Drive [ 900mV]
CPU Clock Skew [ 0ps]
IOH Clock Skew [ 0ps]

Performance Enhance [Turbo]
Extreme Memory Profile (X.M.P.) [Enabled]
System Memory Multiplier (SPD) [AUTO]
DRAM Timing Selectable (sPD) [AUTOl]

Advanced Voltage Control
-------------------------------
Load Line Calibration [Enabled]
CPU Vcore [1.1250v]
QPI/VTT Voltage [AUTO]
CPU PLL [AUTO]

when I Install the 6 Slots the Computter it doesn't start and the second time the bios goes default.

When I bought the memory I place two difernet orders of 3 Dimms (same Model of course)

Should I buy a 6 Dimm Pack instead?

Is OK run Memory a i Do 8-8-8-24 and voltage 1.65v I leave comandRate CMD (Auto)
 
Most d0 chips can do 4ghz from 1.2v to 1.35v with the majority being between 1.25v to 1.3v from what i have seen.

For testing i would set the following

Bclk to 190
vcore to 1.3v, you will need to check and watch this with CPU-Z as may increase or drop depending on LLC being enabled of not, aim for 1.3v load
VTT to 1.3v
PLL at standard 1.8v

There are some good guides on the EVGA forums with a lot of information on i7 clocking in general and what errors mean what etc which will help a lot, espcially look at the one written by "Shamino"

EDIT: just seen your settings, with 6 slots used your putting more stress on the memory controller and in this case its the CPU still, try increase the vcore first, you can always work backwards once you got it working ok to find the min amount you need
 
There are also a couple of rules with i7 overclocking:

Vtt/QPI volts need to be within 0.45v of VDIMM

Uncore speed must be double that of your RAM speed (use the multipliers to adjust this)
 
Hey mate, you should try setting Performance Enhance to standard in the BIOS, as having it set to Turbo can affect stability when overclocking.

You can also try underclocking your RAM as well, and see if you can get it stable with all 12GB installed.

Try using the 6x mem multi, and set uncore to 13x, Bclk 191MHz, enable Turbo Boost Tech in Advanced CPU Options for 21x multi, and this should give you 4011MHz, and your RAM will be running at 1146MHz.
 
Hi, just had a blue screen with prime I was is around 78degres max

what should I do? rise CPU, Memory, VTT Voltage? I'm in 1.3v As with PaulyD settings but only 3 Dimms now I underclock memory speed as DavyBoy suggest
 
Temps are high but fine, was that at 4ghz? I would also recommend doing all testing with the 12gb installed and if all else fails work on getting 6gb stable rather than the other way round.

Did you grab the message on the BSOD? That is invaluable in telling you what you need to tweak to get towards stability. Shamino's guide here explains the most common BSOD's you get and what you need to do to make it stable
 
thanks, With LLC enable or disable my Voltage show in CPUZ is not 1.3 (as I Have Manually set to)

Enable:

idle: 1.280 Full: 1.264

Disable

Idle: 1.264 Full:1.232

BTW my CPU-z is cpuz64_152


yes temp was at 4ghz
 
Last edited:
Just before BlueScreen and Blue Screen:

screenn.jpg
 
Ok, in the guide i linked it shows that exact BSOD and what you need to do to make it stable, it will require a bump in voltage on either the vcore or vtt. I would increase vcore first by a couple of notches and retest (i say a couple as its BSOD'ing on you quite quickly)

Is this with 6gb or 12gb of RAM now?
 
hi, this is with 6GB (tried with 12gb but never turn on)

my temp @3.8GHZ without Turbo On are:

82-85 Full Load, are those too high? not BlueScreen yet after 20min with Core Temp (Real Temp is about 1-2 degrees less)

CPU-Z show= 1.296v
Bus=190
 
Last edited:
now I'm a bit cold runing 3.8GHZ (Turbo Disable) after changing the voltage to:

Cpu Vcore 1.293v
Qi/Vtt 1.280v

around 73-76 Max this morning (12 degrees outside temp)



Do you think is Fine? I'm just worry if one of these days get really hot in the Room. Which Voltage should I try to decrease? or Should I leave it like that
 
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