Sandy Bridge OC Thread V1

This is Intel LGA1155 aka Sandy Bridge (SB) overclocking thread.
Please share your benchmark, stability, guides etc...





Latest BIOS:
LINK

BCLK
measured in MHz
Base Clock Increasing your base clock increases your CPU core clocks, memory speed, QPI frequency, and North Bridge Frequency
-Similar to the older FSB “Front Side Bus”
BCLK x CPU ratio = CPU frequency
Adjust the BCLK frequency to overclock the CPU speed!

Multiplier
-Multiplier is a ratio that determines the clock speed for the CPU based on the multiplication of the BCLK. For example, your CPU multiplier determines what your CPU core clock speed is using this formula: Base clock * multiplier
There are also multipliers for Memory frequency, QPI speed, and North Bridge (UCLK) frequency.

PCIE
measured in MHz
Periferal Connect Interface Express
-Video Graphics communication link
when overclocking, increasing the PCI-E clock can help with stability when above 200MHz BCLK

CPU Voltage
AKA -VCore this is your processor core voltage. Increasing this will supply your CPU cores the power they need to operate at higher frequencies.
Central Processing Unit
-Processor core voltage
DO NOT EXCEED 1.55v

IMC Voltage
"VTT" or "QPI" Increasing this will supply the power needed for the IMC (North Bridge) to operate at higher frequencies.
- L3 shared cache
- memory controller
- processor I/O power rail
Since memory controller frequency is dependent on BCLK, the higher the BCLK, the higher the IMC voltage required. DO NOT Exceed 1.45v

DRAM Voltage
DDR3 Random Access Memory
-Memory Voltage
Since DRAM speed is linked to the BCLK the higher the BCLK the higher the DRAM Voltage is needed

CPU PLL Voltage
PLL: Phase Locked Loop voltage
- Processor/IMC(Integrated Memory Controller)/other internal clock cycles
- Clock multiplying of processor is provided by an internal Phase Locked Loop
Does not have a significant effect on CPU Speed, -DO NOT Exceed 1.90v

PCH Voltage
Platform Controller Hub
- main I/O interface for CPU
- display connectivity
- Integrated Audio
- power management features
- Storage features
The higher the CPU frequency, the harder the I/O (input and output) has to work so there is higher power consumption and more heat is generated, raising the CPU temperature. The PCH voltage needs to be increased in order to stabilize I/O signaling. DO NOT EXCEED 1.25v

vroom vroom SB!

OC Guides & Tips:
LGA1155 Overclocking Glossary
Asus P67/Z68 OC Guides
Asus P67 OC Guides

Latest Overclocking Programs, System Info, Benchmarking, & Stability Tools
LINK - credit to stasio

Monitoring Tools:
CPU-Z 1.61
RealTemp 3.70
CoreTemp 1.0 RC3
HWiNFO 3.95
Mem TweakIT 1.01.6
CPU-Tweaker 2.0 Beta 15

Stability/Stressing Tools: - Pls install win7 SP1 for max stressing
LinX 0.6.4 - 10.3.11.019
PS: For those having problems with bench not starting, try to set mem manually or set it a bit lower than "ALL" preset
Intel BurnTest 2.52
Prime95 27.7 Build 2 X64
Prime95 27.7 Build 2 X86



Benchmark Tools:
SuperPI Mod XS 1.5
HyperPI 0.99 Beta
AIDA64 2.30.1900
Cinebench 11.5
wprime 2.09
pifast
maxxmem
AquaMark 3.1

BSOD codes for overclocking


This post has been edited by owikh84: Aug 8 2012, 06:41 AM

Gigabyte P67A-UD7

Intel Core i7 2600K 4.6GHz HT ON (4C/8T)
Gigabyte P67A-UD7
2x2GB Corsair DomGT DDR3-2000 CL7
2x MSI GTX580SLI, 930/4100Mhz
Corsair AX1200

LinX (* OLD version GFlops is lower)

Vantage:

Super Pi 32M: 7-7-7-20



i7 2600K @ 4.7GHz HT ON (4C/8T) LinX (* OLD version GFlops is lower)


i7 2600K @ 4.8GHz HT ON (4C/8T)


i7 2600K @ 4.9GHz HT ON (4C/8T)
LinX (* OLD version GFlops is lower), SPI 1M, 32M:

Cinebench:

3DMark PhysX:


Intel Core i7 2600K 5.0GHz HT ON (4C/8T)
LinX - latest with AVX

Prime95:


This post has been edited by owikh84: Aug 30 2011, 08:27 PM

Asus Maximus IV Extreme

Intel Core i7 2600K @ 5.0GHz HT ON (4C/8T)
Asus Maximus IV Extreme
2x2GB GSkill RipjawsX 2200C7 @ 2133Mhz 7-10-7-27-1T
2x MSI GTX580 SLI, 930/4100Mhz
Corsair AX1200

LinX - Latest with AVX

Vantage:

Pi 32M:


5.1 GHz HT ON
LinX - Latest with AVX

3DMark06:

Vantage PhysX ON:

PhysX OFF:

wPrime:

Pi 32M:


5.614 GHz


This post has been edited by owikh84: Jan 28 2014, 06:39 AM

Gigabyte P67A-UD7 vs Asus Maximus IV Extreme



Asus BIOS Template


This post has been edited by owikh84: Sep 16 2011, 05:14 PM

dang...so fast!!!!
owikh...can u post the temp ss??
thanks...

This post has been edited by selfdz87: Jan 8 2011, 12:55 AM

105mhz. isn't that a bit risky? and what cooling are u using atm?

No idea bro, for time being getting to know 2600K's behaviour.
Will be using the latest bios F6E for more promising results, hopefully.
WC kit is as siggy for i7 920. Yes, I'm still using the same parts.
I oso got Asus Maximus IV Extreme at the same time.

so the mounting as rumor says, LGA1156 = LGA1155? would like to see some linx gflops results should get 70+ easily

Correct. The 1156 bracket fits nicely w/o modding.
The board:

Foxconn chipset:

Aiya that PCIEx1 hates my D2X.

Wow.. So nice..

lol.. I couldn't upload pics in imageshack and photobucket atm.. anyone encounter the same prob? Using 4MBbs haiz
lol lol...

---

Added on January 8, 2011, 8:19 amFrom my LinX result.
i7 2600K 4.6Ghz HT produce the same GFlops as i7 920 4.5Ghz HT ~ 59ish

---

Added on January 8, 2011, 8:29 amCan't upload pics atm.
LinX 20 runs
i7 2600K @ 4.6Ghz HT, vCore 1.332v on WC
Idle: 36C, Load: 65C
Ambient: 30C.

Hint: Corsair H5O/Venomous-X is 15C weaker than my custom WC so 65+15=80C this speed is still acceptable for air cooling.

This post has been edited by owikh84: Jan 8 2011, 09:57 AM

59gflop.... must be the ram....

how is gaming performance? any noticeable improvements?
might get into it if there is some gain in gaming, but most sites only report low res gaming.....

xpe. can put at other pci-e slot

hehe

Hmm not really concern abt gaming when it comes to CPU.
My GTX580SLI already shines all the benchies.

For some reason the PCIEx1 will make things easier for me.

btw, here's 4.7Ghz stable at 1.375v

damn UD7 keeps failing to flash bios, invalid image haiz...

Asus Maximus 4 Extreme...


This post has been edited by owikh84: Jan 16 2011, 08:20 AM

you seriously need 2400mhz dual channel ram bro.... may i suggest THIS so u can run 2133mhz mode

This post has been edited by metsatsu: Jan 8 2011, 03:35 PM

Bro Owikh u got that M4E already? Wow? How much?

No matter how much you achieve.. I must say this

You are a rich guy with strong balls... Continue your OCing! Gambateh!

aiyark !

@metsatsu

what do u mean dangerous when increase to 105 mhz ?

and how to OC this thing actually ?
any reference for BIOS setting ?
i got i5-2400 lying around .
seems like the multiplier locked at 38 .
so boring .
i cant even achieve 4ghz from 3.1ghz .
too darn boring platform

No point to get 2400MHz since max mem multi for P67 is 21.33x only.
Although Intel allows 10% increase in BCLK, most proc cant do anything above 104 BCLK hence 21.33x104=2218MHz is the max mem freq for P67.mmI will raise my mem after this. Should hv no prob for me.

yes received M4E today for RM1.2k only. Great package as always

Thanks1

yes u can do 4Ghz with 107 BCLK, but I doubt its stability for daily usage.
As for me, dont expect much from 2400 becoz it is not a (K)evin.