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Overcloking i7-965 with Asus Rampage II Extreme

Last response: in Overclocking
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June 10, 2010 5:45:43 PM

I'm having issues clocking my i7-965 anything past 4.0ghz with my Rampage II Extreme and being stable. I have read that using the auto-clocking features on the board is not advised, and I'm lost otherwise. I was looking to be around 4.2~4.3, but anything past stock clock (3.2ghz) will do at this point.

Specs:
Core i7-965 @ 3.2ghz
Asus Rampage II Extreme
6GB Corsair Dominator (Rated @ 1600Mhz)
Diamond 4870x2
*CPU and GPU on seperate water cooled loops

I've searched but found limited answers. Any help, or guidance would really be appreciated.


CPU-Z Readout:
Spoiler
Processors Information
-------------------------------------------------------------------------

Processor 1 ID = 0
Number of cores 4 (max 8)
Number of threads 8 (max 16)
Name Intel Core i7 Extreme 965
Codename Bloomfield
Specification Intel(R) Core(TM) i7 CPU 965 @ 3.20GHz
Package (platform ID) Socket 1366 LGA (0x1)
CPUID 6.A.4
Extended CPUID 6.1A
Core Stepping C0/C1
Technology 45 nm
Core Speed 2677.6 MHz
Multiplier x FSB 20.0 x 133.9 MHz
Rated Bus speed 3213.2 MHz
Stock frequency 3200 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
L1 Data cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 4 x 32 KBytes, 4-way set associative, 64-byte line size
L2 cache 4 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache 8 MBytes, 16-way set associative, 64-byte line size
FID/VID Control yes

Turbo Mode supported, enabled
Max non-turbo ratio 24x
Max turbo ratio 26x
Max efficiency ratio 12x
TDP Limit 130 Watts
TDC Limit 110 Amps
Core TDP 110 Watts
Uncore TDP 20 Watts
Power @ 12x 33 Watts
Power @ 13x 37 Watts
Power @ 14x 41 Watts
Power @ 15x 46 Watts
Power @ 16x 52 Watts
Power @ 17x 59 Watts
Power @ 18x 66 Watts
Power @ 19x 74 Watts
Power @ 20x 83 Watts
Power @ 21x 93 Watts
Power @ 22x 104 Watts
Power @ 23x 116 Watts
Power @ 24x 130 Watts
Max bus number 255
Attached device PCI device at bus 255, device 2, function 1
Attached device PCI device at bus 255, device 3, function 4

Memory:

Spoiler
Memory SPD
-------------------------------------------------------------------------

DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC3-10700H (667 MHz)
Part number CM3X2G1600C8D
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-23 @ 444 MHz
JEDEC #2 8.0-8-8-22-30 @ 592 MHz
JEDEC #3 9.0-9-9-24-34 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Min tRP 10.00 ns
Min tRCD 10.00 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 50.63 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 7.50 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-18-31-2T @ 600 MHz (1.650 Volts)
XMP #2 8.0-8-8-24-41-2T @ 800 MHz (1.650 Volts)

DIMM # 2
SMBus address 0x52
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC3-10700H (667 MHz)
Part number CM3X2G1600C8D
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-23 @ 444 MHz
JEDEC #2 8.0-8-8-22-30 @ 592 MHz
JEDEC #3 9.0-9-9-24-34 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Min tRP 10.00 ns
Min tRCD 10.00 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 50.63 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 7.50 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-18-31-2T @ 600 MHz (1.650 Volts)
XMP #2 8.0-8-8-24-41-2T @ 800 MHz (1.650 Volts)

DIMM # 3
SMBus address 0x54
Memory type DDR3
Module format UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 2048 MBytes
Max bandwidth PC3-10700H (667 MHz)
Part number CM3X2G1600C8D
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP yes
XMP revision 1.2
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-16-23 @ 444 MHz
JEDEC #2 8.0-8-8-22-30 @ 592 MHz
JEDEC #3 9.0-9-9-24-34 @ 666 MHz
XMP profile XMP-1600
Specification PC3-12800
Voltage level 1.650 Volts
Min Cycle time 1.250 ns (800 MHz)
Min tRP 10.00 ns
Min tRCD 10.00 ns
Min tWR 15.00 ns
Min tRAS 30.00 ns
Min tRC 50.63 ns
Min tRFC 110.00 ns
Min tRTP 7.50 ns
Min tRRD 7.50 ns
Command Rate 2T
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 6.0-6-6-18-31-2T @ 600 MHz (1.650 Volts)
XMP #2 8.0-8-8-24-41-2T @ 800 MHz (1.650 Volts)
August 5, 2010 9:58:34 AM

I have the same questions and combo as well. I'm new to the forum and have the exact same issue. Everyone seems to be able to rattle off multipliers and voltages, but every time I try to change the multiplier, it just gives me auto.

I've done a lot of surfing for info and still with no easy to understand responses, so I've been sticking with the i7-crazy OC selections and they seem to work okay so far. With your water cooled setup, you should do the i7-crazy with no problem. Personally I just make sure my temps and voltages are copacetic.

i7-965 + Rampage II Extreme
Noctua DH-14 CPU Cooler (more like a house)
Sapphire 5970 video card (more like a battleship) future plans to add another.
12 GB Corsair Dominator
Corsair 800D case (on the way)
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August 5, 2010 3:04:54 PM

Hmm, just go to this screen in the bios: http://www.tomshardware.com/gallery/asus_rampage-ii-ext... set ai tuner to manual, the next 2 options to disabled and change the multiplier?
Maybe you need to disable turbo boost first, if it doesnt happen automatically. For 4GHz+ you might need some extra vcore. Cant really help you any more, since i have no experience using multiplier unlocked cpu's.
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Related resources
August 10, 2010 10:21:39 AM

Thanks for the information coffeejunkie. I tried your suggestions, but the darn thing seems enjoy thwarting me. Currently, I have it clocked at 4ghz using the i7-crazy auto OC. It's been glitchy at times but I hope better cooling is all it needs. All I want is 4 ghz stable 24/7 if possible. Any help from anyone is gladly accepted!

Asus Rampage II Extreme w/ i7-965
12 GB Corsair Dominator 1600
Noctua NH-D14 HSF
Sapphire ATI Radeon 5970 2GB
Seagate Barracuda 1TB
Cosair 800D case
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August 18, 2010 11:14:47 PM

Hmm, surely cant be that hard to increase a multiplier? Have you read your mobo's manual? Also, it's not easy to find better cooling when you're already using a Noctua NN-D14, unless you were thinking about water. Btw did you run stability tests? Glitchy during normal use doesnt hold much promise.

I would suggest reading this: http://www.overclock.net/intel-cpus/538439-guide-overcl...

And ask on the Asus forums as well. It shouldn't be unreasonable to expect a little support when buying a 400$ mobo.
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August 19, 2010 2:40:05 AM

Thanks Coffee,
Since my last communication, I've read rather than skimmed the Asus Rampage bible (lol) and found out how to make changes to the multiplier, etc. It's stable as long as I'm in the late 3ghzs, but a solid 4ghz 24/7 goal is a work in progress mainly because I'm still learning how to juggle between volts, heat and multipliers.
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August 20, 2010 8:50:36 PM

Don't be too alarmed by the 67,9 degrees celsius treshold on Intel site. That's tcase, not the temperature of the cores. Cores themselves can get up to 100 before throttling. I would say 80/85 degrees is a fairly safe limit under heavy stability testing (prime/linx). Under normal use temperatures won't ever reach that.

Also, 12GB ram isn't really helping your overclocking efforts. You might need a little extra juice on the memory controller.
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August 21, 2010 2:38:54 AM

I finally reached a stable 4ghz. I kept it simple. Bus speed is 133, I hopped the multiplier to 30, increased the CPU volts to 1.38, and memory at 1600 (volts about 1.64).

Heat is not an issue, but one factor I found interesting is if the case is open or closed. I found as much as a 5 degree celsius drop in CPU temp with the case open. It was no surprise to me because of the hot and bulky Radeon 5970. It's so long that it blocks cool airflow coming from the bottom of the Corsair 800D case.

Intel i7-965 @ 4GHZ
12 GB Corsair Dominator 1600 @ 1600MHZ
Sapphire Radeon 5970 2GB
Seagate Barracuda 1TB
Plextor Blu-ray burner
Samsung p770H monitor
Corsair HX1000 PSU
Corsair 800D case
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August 21, 2010 1:19:42 PM

Well, Obsidian has a kinda weird airflow (it's more geared towards watercooling). I think it would be a good idea to populate the top fanslots.
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August 22, 2010 12:19:18 AM

You read my mind! 1 Noctua installed and 2 more on the way. That should complete my cooling system for now.
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!