The i7 Overclocking Study Thread... post your OC settings.

**roller11** · 01-30-2009, 09:19 PM

i7 920 batch 3836A977
Giga UD5
6GB OCZ 1600
Tuniq Tower air cooler w/hand made hold down

passed prime , linpack @4011 Mhz Vcore=1.184
superpi @ 4662 Mhz, vcore=1.488
prime @ 4305 Mhz, vcore=1.344
prime@ 4205 Mhz, vcore=1.261

**PC_User** · 03-19-2009, 05:37 PM

i7 920 - Batch #3841A558
Gigabyte EX58-UD5
6GB G.Skill DDR3 1600 CL9

Current stable settings @ 3.80 GHz

Clock Multi - 20x
Frequency - 3.60 GHz
QPI Link - x36
Uncore Frequency - 3040
BCLK - 190 MHz
Performance - Standard
HT - On
Memory Multi - 8x
CPU Vcore (BIOS) - 1.24375
QPI/VTT voltage - 1.30
DRAM - 1.54

In Windows
Idle - 42-44*C | 1.216v
Stress - 65-67*C | 1.20v

**Godmyster** · 03-19-2009, 06:46 PM

Hi there my system is basicly the same as yours, how far can you go with that stable?

**2slick4u** · 03-20-2009, 05:15 AM

System Info:

i7 920 @ 3.8ghz (Batch 3838A938), Asus P6T Deluxe V2 motherboard (0302 BIOS), Corsair Dominator 6GB DDR3 1600MHZ RAM, Noctua NH-U12P cpu cooler.

Settings:

CPU Ratio: 19x
BCLK: 200
DRAM: 1603 mhz
UCLK: 3208 mhz
QPI: 7218 MTs
HT: Off
Everything else: Untouched

Voltages:

CPU Voltage: 1.35v
PLL Voltage: auto
QPI Voltage: 1.356v
DRAM Voltage: 1.66v
All other voltages: Untouched
Loadline Calibration: Enable

Not sure if it stable I had to change the voltage around cuz before I had the vcore at 1.35v and qpi/dram at 1.35000v, but wasn't stable running prime95.
Right now I'm using the same setting as the creator of this thread, but not sure if it will be stable.. Temps are rediculously high on this cpu...

**2slick4u** · 03-20-2009, 06:12 AM

not stable

**Terlcartman** · 03-20-2009, 11:28 AM

System Info:

i7 920 @ 4.095ghz (Batch 3841A7437), Gigabyte UD5 (F5e BIOS), Corsair XMS3 6GB DDR3 1600 RAM, Water Cooled

Settings:

CPU Ratio: 19x
BCLK: 195
DRAM: 1570 mhz
UCLK: 3315 mhz
HT: On
Turbo: On
C1E: On
C3/6/7: On
TM: on
Virt: off
Prochot:off
QPI 36X
Mem 8X
UnCore 17x

Voltages:

CPU Voltage: 1.4125v
CPU PLL Voltage: 1.86v
QPI Voltage: 1.335v
DRAM Voltage: 1.66v
QPI PLL: 1.4

Notes:

Max temp 81c under LinX testing. Stable for 30 + 20x LinX runs, multiple Prime 95 Small, Mixed and Large tests. Hours of Gaming, Crisis, Wow, CoD.

**Infa** · 03-20-2009, 12:05 PM

System Info:

i7 920 @ 4.2Ghz (Batch #3841A627), Gigabyte UD5 (F6C BIOS), Corsair XMS3 3GB DDR3 1600 RAM, Water Cooled (Sign)

Settings:

CPU Ratio: 21x
BCLK: 200
DRAM: 160 mhz
UCLK: 3600 mhz
HT: Off
Turbo: On
C1E: Off
C3/6/7: Off
TM: off
Virt: off
Prochot:off
QPI 36X
Mem 8X
UnCore 18x

Voltages:

CPU Voltage: 1.40000v (1.36 Loaded)
CPU PLL Voltage: Auto
QPI Voltage: 1.38 (bios)
DRAM Voltage: 1.70 (1.69 bios)
QPI PLL: Auto

Timings: CL 7-8-7-20

Notes, maxtemp during test 66c. this is linx , and not prime therefore higher temps also.

**barry1983** · 03-20-2009, 12:47 PM

i7 920 (#3841A380)
Asus Rampage II Extreme
G.Skill 12800CL8T-6GBPI-B
True Black 120

Settings:

CPU Ratio: 19x
BCLK: 206
DRAM: 1651 mhz
UCLK: 3300 mhz
QPI: 7425 MTs
HT: On
Everything else: Untouched

Voltages:

CPU Voltage: 1.30625v
PLL Voltage: 1.81v
QPI Voltage: 1.3125v
DRAM Voltage: 1.65v
All other voltages: Untouched

Notes:

Max temp 73c under LinX all ram testing. Linx stable for 20 loops.

**2slick4u** · 03-20-2009, 05:47 PM

System Info:

i7 920 @ 3.8ghz (Batch 3838A938), Asus P6T Deluxe V2 motherboard (0302 BIOS), Corsair Dominator 6GB DDR3 1600MHZ RAM, Noctua NH-U12P cpu cooler.

Settings:

CPU Ratio: 19x
BCLK: 200
DRAM: 1603 mhz
UCLK: 3208 mhz
QPI: 7218 MTs
HT: On
Everything else: Untouched

Voltages:

CPU Voltage: 1.32v
PLL Voltage: auto
QPI Voltage: 1.34v
DRAM Voltage: 1.66v
All other voltages: Untouched
Loadline Calibration: Enable

Trying to get it stable at this setting anyone know if this will be possible?

**Chicken Patty** · 03-20-2009, 06:32 PM

Originally Posted by 2slick4u

System Info:

i7 920 @ 3.8ghz (Batch 3838A938), Asus P6T Deluxe V2 motherboard (0302 BIOS), Corsair Dominator 6GB DDR3 1600MHZ RAM, Noctua NH-U12P cpu cooler.

Settings:

CPU Ratio: 19x
BCLK: 200
DRAM: 1603 mhz
UCLK: 3208 mhz
QPI: 7218 MTs
HT: On
Everything else: Untouched

Voltages:

CPU Voltage: 1.32v
PLL Voltage: auto
QPI Voltage: 1.34v
DRAM Voltage: 1.66v
All other voltages: Untouched
Loadline Calibration: Enable

Trying to get it stable at this setting anyone know if this will be possible?

that is possible. However that QPI at 7218 MTs doesn't seem right for some reason. Maybe its different on your board

**2slick4u** · 03-20-2009, 07:25 PM

Originally Posted by Chicken Patty

that is possible. However that QPI at 7218 MTs doesn't seem right for some reason. Maybe its different on your board

what would you set it at?

**Chicken Patty** · 03-20-2009, 07:33 PM

Originally Posted by 2slick4u

what would you set it at?

here check out this link. its a different board. However it says the QPi link should be 4,800 GT/s. However your board is different so maybe that setting is ok for you, I wouldn't know. Maybe somebody with your board will wanna help.
http://www.evga.com/forums/tm.asp?m=642527

**2slick4u** · 03-20-2009, 07:49 PM

7200MT/s (3.6GHz)
4.800GT/s
but on my board it says 7200MT/s (3.6GHz)

**Godmyster** · 03-20-2009, 09:59 PM

Originally Posted by Terlcartman

System Info:

i7 920 @ 4.095ghz (Batch 3841A7437), Gigabyte UD5 (F5e BIOS), Corsair XMS3 6GB DDR3 1600 RAM, Water Cooled

Settings:

CPU Ratio: 19x
BCLK: 195
DRAM: 1570 mhz
UCLK: 3315 mhz
HT: On
Turbo: On
C1E: On
C3/6/7: On
TM: on
Virt: off
Prochot:off
QPI 36X
Mem 8X
UnCore 17x

Voltages:

CPU Voltage: 1.4125v
CPU PLL Voltage: 1.86v
QPI Voltage: 1.335v
DRAM Voltage: 1.66v
QPI PLL: 1.4

Notes:

Max temp 81c under LinX testing. Stable for 30 + 20x LinX runs, multiple Prime 95 Small, Mixed and Large tests. Hours of Gaming, Crisis, Wow, CoD.

what do you think of that bios? (f6c)

**Infa** · 03-21-2009, 01:17 AM

I dont see that he uses F6C ?

**2slick4u** · 03-21-2009, 05:35 AM

Originally Posted by Chicken Patty

here check out this link. its a different board. However it says the QPi link should be 4,800 GT/s. However your board is different so maybe that setting is ok for you, I wouldn't know. Maybe somebody with your board will wanna help.
http://www.evga.com/forums/tm.asp?m=642527

I'm getting so frustrated in my chip...I got screwed having this C0 revision chip...I heard the D0 much better overclocker..

**ewitte** · 03-21-2009, 05:44 AM

Stats for 3.8ghz on mine

i7 920 batch 3844A361
Asus p6t Deluxe
6GB OCZ 1333 7-7-7-20
During the last test N520

Prime 8-10 hours 3.8Ghz
http://s150233688.onlinehome.us/prime38.jpg - 1.145v - 10 hours - temps 80/77/88/73

Settings ( I did lower than these with HT on and V8 next test but no screen shots)
cpu in BIOS - 1.145v
qpi 1.35v
mem 1.6v
HT off
C1E on (to keep idle temps low)
CState on (to keep idle temps low)
Memory OCZ 1333 7-7-7-20 running same timings at ~ 1200

**d50man** · 03-21-2009, 06:35 AM

no D0 seen in retail yet... so why are you down?

**Godmyster** · 03-21-2009, 06:38 AM

Originally Posted by Infa

I dont see that he uses F6C ?

Sorry i got the quot wrong, i was refering to you, you the one that has F6C lol

what do you think of ir m8?

Thanks

**foolycooly** · 03-21-2009, 06:38 AM

Wow, that core voltage is incredibly low. Seems weird that your temps ended up so high after a long stress test. Also, what are C1E and CState and how do they keep idle temps low? Are they on by default?

**Terlcartman** · 03-21-2009, 06:51 AM

Looks like you were asking the other guy but my thoughts on the F5e BIOS: I like it alot as I got the temp drops from the F5 series, S3 resume works as long as I wait at least 30 sec before attempting to wake and my 4.095 with Turbo and HT is stable. FYI I tried F6a and it did not work well for me and most recently I tried F6e and my overclock would BSD very quickly with it on LinX and the killer was it will stop you from going back to older BIOS using Q-Flash, which was really annoying. I was able to get back by creating a USB Boot Disk and reflashing that way. Instructions on tweaktown by (lsdmeasap).

In looking at your settings and esp. temps I am thinking of playing with turning HT off and trying F6c. I know your block is better than mine for quad cores, and your rad is better as well but a 15 degree difference in LinX testing is huge!!

My goal is to get to 4.2 stable with HT on and temps below 85 with LinX but I have not gotten there yet.

I am going to get a new block for sure but waiting on Hondacity's review of the HK vs the K350.

**Chicken Patty** · 03-21-2009, 08:57 AM

Originally Posted by 2slick4u

I'm getting so frustrated in my chip...I got screwed having this C0 revision chip...I heard the D0 much better overclocker..

like D50 said, there is no D0 retail yet. We all have C revisions

**2slick4u** · 03-21-2009, 10:05 AM

Originally Posted by Chicken Patty

like D50 said, there is no D0 retail yet. We all have C revisions

Unfortunately.. I guess I got a bad chip =(
I'm frustrated with it haha can never get it stable at 3.8ghz...

**2slick4u** · 03-21-2009, 10:06 AM

Originally Posted by d50man

no D0 seen in retail yet... so why are you down?

Just frustrated with my chip...batch 3838A938 I tried to get it stable at 3.8ghz but just can't after so many tries..I dunno what gives maybe voltages..

**Chicken Patty** · 03-21-2009, 10:13 AM

2 slick post a shot of CPUz, and the memory tab also if you can please.

Thread: The i7 Overclocking Study Thread... post your OC settings.

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