Core i7/X58 Overclocking Thread

[Splave]

what's a ballpark temperature for a i7 at 4GHz full load with decent watercooling?

60- low 70s








What is the key to high bclk? Im stuck at 221.999

[Ender17]

60- low 70s








What is the key to high bclk? Im stuck at 221.999

wow these chips are hot
here is what I'm considering
http://www.xtremesystems.org/forums/...d.php?t=219993

[Hooti3]

Well i have been doing some Prime95 and LinX testing of my running setup..

Found a nice place of stability after about 50 passes of Linx and a couple of hours of Prime95...i would say it's considerably stable

Specs

i7 920 @ 4.0Ghz 1.3625V Bios (1.399V Load Windows) 191x21 w/ HT on. #Batch 3839A613
3 x 1GB 1600Mhz G.Skill @ 1.6V
EVGA X58 w/ SZ21 Bios
W/C loop made up of the Swiftech Apex ultima Kit.

Bios Template

i7-920@4.0GHz

Mother Board ( EVGA X58 X3 SLI )
Drivers ( 9.1.0.1013 )
Bios ( SZ21 )
CPU ( 920 )
CPU Cooler ( Swiftech Apex Ultima )
Memory ( G.Skill 1600Mhz 9-9-9-24 NQ )
PSU ( Antec TPQ 1000W )
GPU ( Powercolor HD4870X2 )
Drivers ( 182.08 )
Operating System ( XP Pro )


Frequency Control
CPU Clock Ratio ( 19X ) ( x21 With Turbo Enabled)
CPU Host Frequency (Mhz) ( 191 )
MCH Strap ( 1333Mhz )
CPU Uncore Frequency (Mhz) ( 16X )
Spread Spectrum ( Disabled )
PCIE Frequency (Mhz) ( 100 )


Memory Feature
Memory SPD ( XMP )
Memory Control Setting ( Enabled )
Memory Frequency ( 2:8 )
Channel Interleave Setting ( 6 Way )
Rank Interleave Setting ( 4 Way )
Memory Low Gap ( Auto )
tCL Setting ( 9 )
tRCD Setting ( 9 )
tRP Setting ( 9 )
tRAS Setting ( 21 )
tRFC Setting ( 70 )
Command Rate ( 1T )


Voltage Control
EVGA VDroop Control ( With VDroop )
CPU VCore ( 1.3625 ) 1.376V On idle, 1.399V Load
CPU VTT Voltage ( +225 )
CPU PLL VCore (Auto )
DIMM Voltage ( 1.600 )
DIMM DQ Vref ( +0 )
QPI PLL VCore ( 1.325 )
IOH VCore ( 1.2 )
IOH/ICH I/O Voltage ( 1.55 )
ICH VCore ( 1.10 )
PWM Frequency ( 933 )


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 )

Temps

Well considering it's summer in Aus. Temps are quite brilliant

Note: Rad has 2 x 2000rpm Scythe Ultra Kazes (Pull) + 2 CM 90CFM Fans (Push) (All on medium speed via Fan controller) + OCZ Freezer Xtreme TIM.

Idle: Core 1 - 39 , Core 2 - 35 , Core 3 - 38, Core 4 - 35
Load: Core 1 - 66-68 , Core 2 - 63 , Core 3 - 65, Core 4 - 66

Vreg Temps at full load are 63 (w/ 60mm fan on Vreg)
System Temps at full load are 33

I think i have found my new 24-7 Clock

What do you guys think?

Look decent enough?

[chance]

A reboot happen (hour 6) cause i set QPI voltage to low (1.25v), now its stable (1.26v). I put some legends on the PS just for those two users yesterday.

[Hooti3]

that is one of the best chips i have seen..

What batch is that?

[chance]

that is one of the best chips i have seen..

What batch is that?

I've answered that questions so many times 3838B079

[Hooti3]

I've answered that questions so many times 3838B079

i'm sorry i don't read 114 pages to find your posts...

[chance]

i'm sorry i don't read 114 pages to find your posts...

Pffffffffff You don't really need to read 114 pages, there is a option called "Find more posts by... chance", less than 20s to find the batch, so easy... And even better, i only post 47 times

[Damien]

ehhh cant really blame the guy for asking. just put your system in your sig. easiest way to avoid that.

did some fun overclocking in my garage the other night, was about 20f out.




definitely could have booted higher but i was freezing and I didn't think to up my vtt or lower my northbridge mhz. oops.

[sparks.oc]

I am new to this forum but I overclock for some time now. I have some results on my i7 920. I have to add that in my eyes (anyone may think different) an overclock is only an overclock when it's at least 8 hours prime stable (on all cores).

Results so far:

4GHz boot(official CPUz)
3570MHz (21x170) - Primed
210MHz busspeed @4hours of prime (still running)

Results sheet

Hardware used:

Processor: Intel Core i7 920
Cooling: Swiftech Apogee GTX, BIX, SW MCP600, 6L water reservoir (old pic)
Mainboard: Gigabyte GA-X58 UD5
Memory: 6 GB (2 x 3) MUSHKIN PC12800 (1600 MHz cas 9, 1.5-1.6v)
Graphics Card: ATI Readon HD4870
Case: Antec Twelve Hundred
PSU: Corsair TX-750W

[ReverendMaynard]

hit some new highs today. Enjoy.

[Astratuner]

mmz guy can someone please get on a the rails and link/tell me what bios options etc i best should disable?

Do you guys recommend that I first find the max bclck?

[ReverendMaynard]

mmz guy can someone please get on a the rails and link/tell me what bios options etc i best should disable?

Do you guys recomment that I first find the max bclck?

I disable everything powersaving related.

[Tulatin]

How are some of you guys getting the 21x multipliers? ES CPUs, motherboard feature?

[dejanh]

Turbo boost.

[Tulatin]

Turbo boost.

Ah, duly noted. Right now I'm working off an ASRock x58 Supercomputer motherboard (free works for me). I'm maxing out at around 3.8GHz, 1.35V. Using a V10 for cooling but likely I'll swap back to a V8 after I get a set of mounting brackets for it. Any suggestions on tapping the bclk up to or over 200 to make that magic 4GHz mark? Increasing the voltage doesn't really help matters.

[Rammsteiner]

Argh, my Uncore is crap

It wont let me use 210Mhz Blck with a 16x multiplier, at 12x it works but I want my RAM at DDR1600 so Im kind of stuck there

Oh well, happens, CPU likes 4.2Ghz with 1.36Vcore load (CPU-Z) so yeah, not much to complain about either

[Astratuner]

Hey guys I just have a quick question for you.

First when i ran at 4.0GHz i needed 1.40 Vcore,

Now after a few days i've gone back to stock settings and then I oc my 920 back to 3.2GHz, now first i needed 1.27500 Vcore for that to become stable but now I see I only need 1.10000 Vcore and I haven't changed any settings?

IS this because my cpu ran at 4.0GHz and is burned in now that I need less Vcore?

[SteveRo]

Hey guys I just have a quick question for you.

First when i ran at 4.0GHz i needed 1.40 Vcore,

Now after a few days i've gone back to stock settings and then I oc my 920 back to 3.2GHz, now first i needed 1.27500 Vcore for that to become stable but now I see I only need 1.10000 Vcore and I haven't changed any settings?

IS this because my cpu ran at 4.0GHz and is burned in now that I need less Vcore?

unlikely - more likely you changed something else that let you go lower v.

[Rammsteiner]

Maybe you assumed you needed a lot of VTT, but when VTT gets relatively high it might happen that it will anyhow only be stable when Vcore and VTT are within 0.02V and 0.08V of each other.

Now you probably left VTT alone and only set Vcore, meaning you didnt have to raise Vcore to unneeded levels to match more or less with VTT...

I guess

[hammer_of_thor]

Hello all.
Been reading this forum for some time now.
I'm not new in overclocking and I have experience, but a "problem" came up

I don't have Turbo Boost option in my Asus Rampage II Extreme BIOS (along with a few more options)

(click on a thumbnail to open)

As you can see, there is no option for Turbo Boost

My system is:

i7 920
Asus Rampage II Extreme (BIOS version 0805; 12/09/2008)
2x2 GB G.Skill 1333 DDR3 memory

and the rest:

Gigabyte 8800GT
Corsair HX620
CoolerMaster V8
CoolerMaster HAF case
160+500+500 GB Hitachi HDD

Is it the BIOS?
Will flashing help?

Thank you in advance
Regards

[16floz470ml]

Make sure that you have speedstep enabled.

[hammer_of_thor]

Make sure that you have speedstep enabled.

Hello, thank's for the tip, but the thing is, I don't have the Speedstep option either

[dejanh]

Hello, thank's for the tip, but the thing is, I don't have the Speedstep option either

Check your PM, I answered your question

[hammer_of_thor]

Check your PM, I answered your question

Thank you so much for a conclusive answer


EDIT:

Worked
Thx again