Core i7 Overclocking thread

[ATOJAR]

Wow Revs, You da man.

Turning off HT just knocked my load temps from 77c to 66c.

[Revs]

Jolly good

That's good temp. 4.2Ghz next?

[ATOJAR]

Revs, How have you managed to get your memory running at 1600MHz with the cpu at 4.2GHz?

(i see you have the same memory as me)

If i put my BCLK to 210 with a multiplier of 20 i get 4.2GHz but my memory clocks up to 1691MHz?

My memory timings are 9-9-9-24 and its on 1.66v, I wonder if my memory would be ok/stable running with the extra 91MHz?

[Revs]

Set the uncore or whatever it's called to 200Mhz. 19x multiplier, plus Turbo mode which adds 2 more gives you 21x. 200 x 21 = 4.2Ghz. Memory on 8x gives you 1600Mhz . There's another option in there somewhere which should be set to double your memory multiplier, ie, with yours at 8x this other should be on 16x. Can't check not cos I'm at work, but if you need any more help you can get me on xFire this evening .

You should, if you haven't already, disable anything that saves power like EIST or C3, stuff like that. On most mobo's they won't work in Turbo mode anyway, but they can effect stability. Just make sure you leave CPU throttling on (often called CPU Thermal Protection).

[ATOJAR]

The thing is we have different boards so all the names/settings will be different no?

Anyway this is what ive managed to far.

[Revs]

The names vary but the options are the same. All X58's have Turbo mode AFAIK. Most people find the 19x multiplier to be more stable, too. As well as allowing you to run the memory at the 'correct' speed.

[ATOJAR]

Ok something weird about turbo mode, Its in the bios when the multiplier is set to auto but as soon as i manually input any figure the turbo mode option goes!

Also if i try the x19 multiplier my two closes memory options are 1335MHz or 1779MHz!

[bob saget]

Originally Posted by bob saget

some settings from the gigabyte forums for 4.0

Advanced CPU Features:
CPU Clock Ratio ................................ [19x]
Intel(R) Turbo Boost Tech .................. [Enabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .......................... [Enabled]
CPU Enhanced Halt (C1E) ................... [Disabled]
C3/C6/C7 State Support .................... [Disabled]
CPU Thermal Monitor ......................... [Enabled]
CPU EIST Function ............................ [Disabled]
Virtualization Technology ................... [Enabled] << Disabled if you do not use Vmware or Virtual PC Programs
Bi-Directional PROCHOT ..................... [Enabled]


Uncore & QPI Features:
QPI Link Speed .............................. x36
Uncore Frequency .......................... 16-18 (Always 2x memory Multi or 2x +1, 2x +2, ect)
Isonchronous Frequency ..................[Enabled]


Standard Clock Control:
Base Clock (BCLK) Control ................ [Enabled]
BCLK Frequency (MHz) ..................... 190
PCI Express Frequency (MHz) ........... [100]

C.I.A.2 [Disabled]

Advanced Clock Control:
CPU Clock Drive ..............................[800mV]
PCI Express Clock Drive ................... [900mV]
CPU Clock Skew ............................. [0ps]
IOH Clock Skew ............................. [0ps]


Advanced DRAM Features:
Performance Enhance ...................... [Standard]
Extreme Memory Profile (X.M.P) ......... [Disabled]
System Memory Multiplier (SPD) ........ [8x ] = 1520Mhz
DRAM Timing Selectable (SPD) .......... [Manual]

Channel A + B + C

Channel A Timing Settings:
##Channel A Standard Timing Control##
CAS Latency Time ......................8
tRCD .......................................8
tRP .........................................8
tRAS .......................................24

Below values may be left in Auto if you like, generally this is fine. For those users who DO Set advanced timings manually, please see some of my thoughts and findings about these settings and rules here
XtremeSystems Forums - View Single Post - Gigabyte EX58-UD5/Extreme Discussion Thread


##Channel A Advanced Timing Control##
tRC ........................................ Auto (Should be = tRAS + tRP or above for stability)
tRRD ....................................... Auto
tWTR ...................................... Auto (Must be Write to Read Delay/Same Rank - (tWL + 4)
tWR ........................................ Auto 5-12 (Odd # values likely will fail)
tWTP ....................................... Auto (tWTP Must = tWR + tWL + 4)
tWL ........................................ Auto (tWL Must be CAS Latency -1)
tRFC ....................................... Auto
tRTP ....................................... Auto
tFAW ...................................... Auto
Command Rate (CMD) ................ 1

##Channel A Misc Timing Control##
Round Trip Latency ................... Auto



Advanced Voltage Control:

CPU
Load Line Calibration ................. [Disabled] << Enabled
CPU Vcore ............................... All up to your CPU, do not use Auto. Maybe 1.25-1.4
QPI/VTT Voltage 1.150v ............ 1.28-1.35+ (Some CPU's need 1.35-1.45+, and of course higher QPI above will need more here as well)
CPU PLL 1.800v ....................... 1.8-1.84

MCH/ICH
PCIE 1.500v ........................... 1.5
QPI PLL 1.100v ....................... 1.14-1.24 (Auto may work fine for you)
IOH Core 1.100v ..................... 1.14-1.24
ICH I/O 1.500v ....................... 1.5-1.58 (See below)
ICH Core 1.1v ........................ 1.14-1.2 (on the higher end if you have many drives or larger GFX Cards)

DRAM
DRAM Voltage 1.500v .............. 1.64-1.66 (Some BIOS 1.64 is about 1.63 so you may need 1.66)
DRAM Termination 0.750v [AUTO]
Ch-A Data VRef. 0.750v [AUTO]
Ch-B Data VRef. 0.750v [AUTO]
Ch-C Data VRef. 0.750v [AUTO]
Ch-A Address VRef. 0.750v [AUTO]
Ch-B Address VRef. 0.750v [AUTO]
Ch-C Address VRef. 0.750v [AUTO]

wtf, i just followed this and I am at 3.6

nvm its supposed to be 3.6.

[bob saget]

i am idling at just under 40c, 37c-39c, and during bfbc2 it didn't get higher than 59c. I think I'll keep this overclock.

[Toss3]

Yay just got my old C0 to 4200Mhz! Currently running at 1.4V. Temps after running prime95 for 15 minutes were in the low 60s. Idle temp is ~30c.

[bob saget]

Originally Posted by Toss3

Yay just got my old C0 to 4200Mhz! Currently running at 1.4V. Temps after running prime95 for 15 minutes were in the low 60s. Idle temp is ~30c.

what? how the hell are you cooling it? My D0 at stock voltages idles at 30.

[Toss3]

Originally Posted by bob saget

what? how the hell are you cooling it? My D0 at stock voltages idles at 30.

Water - Heatkiller Rev 3 CPU block + BlackIce GTx 360 rad.

EDIT: Got it to boot with 4300Mhz. Idle temps with vcore at 1.44 are ~35c.