i7 930 overclocking thread

jbeezer said:
It seems no one has any data on the 3939C199 batch... I just got mine today with an X58A-UD3R rev2. My h50 arrives tomorrow, I hope to have some results for you guys soon.
Click to expand...

Got one from Fry's and returned it because the store I went to wouldn't pricematch Microcenter. Got a second one because upon returning it to another Fry's store they said they do pricematch. ;)

1st one looks like a solid 4-4.2GHz OC'er and cooler. I haven't pushed my current one beyond 3.8GHz, but temps are in the mid to high 70s at load. Have fun OC'ing.
 
Thanks for the info. I'm hoping to make it to 4.2 with my h50. This should be a very nice upgrade from my AMD X2 5400+ (@ 3.2ghz), I can't wait.
 
Fun article: Intel Core i7-920 versus i7-930

http://www.bit-tech.net/hardware/cpus/2010/05/19/intel-core-i7-920-versus-i7-930/1

Well, we should start off with the easy scenario: if you're not going to overclock, get the i7-920 and save yourself the money. The 133MHz extra speed of the 930 makes practically no difference.

If you're only going to be going for a moderate overclock - let's say 3.8GHz or below, then again, we'd say go for the i7-920. None of the 920s we've seen have struggled to hit this speed on air-cooling (although, as always with overclocking, your mileage may vary) and you can pocket a decent amount of cash.

Above 3.8GHz, then you should look to the i7-930. While 920s can often hit 4GHz, the 930 gives you more headroom, or the capability to go far further in terms of speed.

If you're water-cooling, we'd also say that the i7-930 should be your chip of choice, again, thanks to its superior overclocking potential. After all, if you're going to all the trouble of plumbing in your PC, it would be rude not to clock the speed up.

Of course, as the 920 is officially an end-of-life product, the problem of which cheap Core i7 to buy isn't going to stick around for a long time - the longer you wait, the more likely it will be that the i7-930 will be the only game in town.
Click to expand...
 
Something doesn't seem right. I'm hitting 90C with core#1 according to Everett when I run Linx. The EasyTune6 app that came with my motherboard reports quite a bit lower temps (only ~78C while Everett core1 is at 90C). The ambient temperature here is a bit warm, but still this does not reasonable for this H50 with a push pull configuration with 2 x 50CFM (1450rpm) Gentle Typhoons. Here is what I'm running at.

User Name: jbeezer
CPU: i7 930
FPO/Batch #: 3939A199
Purchased In: May 30, 2010

OC: 3885 (21x185)
Stability: 10 runs Linx
Temp (Idle / ET6 Load / Everett cpu1 Load): 50c / 78c /91c
Hyper Threading / Turbo Boost / Multiplier: No / No / 21x
Stepping: D0
Revision:
Vcore/Core Voltage: 1.232 (Reported CPUID, and Everett) 1.26 in Bios
Cooling: water
Cooler brand/model: Corsair H50 push/pull with 2 x Gently Typhoon ~50CFM each

Motherboard: Gigabyte GA-X58A-UD3R
Bios Version: F5
Operating System: Win7 64

RAM brand & type: G. SKILL 3x2GB DDR3
RAM Part #: F3-12800CL9T-6GBNQ
RAM rated speed: 1600 MHz
RAM actual speed: 1480 MHz
RAM Latency: 9-9-9-24 1T
RAM Voltage: 1.5V

It really surprises me that it's not crashing if it really is getting as hot as Everett says for core 1 (the other cores aren't far behind). I think I'll try remounting this H50 water block today, and reapply some AS5. I have had it over 4.1GHz and it seemed stable (1.4V qpi), but the Everett core 1 temps scared me away.
 
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jbeezer said:
Something doesn't seem right. I'm hitting 90C with core#1 according to Everett when I run Linx. The EasyTune6 app that came with my motherboard reports quite a bit lower temps (only ~78C while Everett core1 is at 90C). The ambient temperature here is a bit warm, but still this does not reasonable for this H50 with a push pull configuration with 2 x 50CFM (1450rpm) Gentle Typhoons. Here is what I'm running at.

...

It really surprises me that it's not crashing if it really is getting as hot as Everett says for core 1 (the other cores aren't far behind). I think I'll try remounting this H50 water block today, and reapply some AS5. I have had it over 4.1GHz and it seemed stable (1.4V qpi), but the Everett core 1 temps scared me away.
Click to expand...

That does seem high. What is the bios reporting? Try realtemp (see second post). What are you using for tim? thin layer? How are you applying?

Also try Cecil's guide, then optimize towards lower temps.
 
Thanks for the realtemp suggestion, I had missed that. It seems to be about the same as everett- I hit 90C max with 10 runs of linx testing at 185x21 @ ~1.200V reported, 1.235 set in bios. Doesn't that seem hotter that it should be, especially for the voltage that I'm running at?

CZNfb.jpg


I followed Cecil's guide, but then was scared off after i saw a core1 temperature reach 95C (1.35V, ~4.1ghz). I'm kind of confused on what I should run my Vqpi? Cecil says increase it to 1.3 - 1.35 or so, however post #2 says around 1.1V. My Vqpi is 1.24V currently.

I have turbo mode off, speedstep off, and HT off (should make it 10C cooler right?).

I used a thin coat of AS5 (small rice grain size, and spread with CC). Perhaps it is my wimpy push / pull fans that I have on the radiator? Also the ambient temperature here is around 30C.
 
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My h50 waterblock / pump unit was not firmly seated against the cpu (thermal paste contact on only 60% of the die). It is kind of a tight fight between the rad and the cpu, so the tension from the hoses wants to lift one side of waterblock up. No matter, I was able to get the retention bracket tightened down evenly and completely this time.

TLDR- I'm a noob, h50 water block wasn't properly seated.

I am now reaching 79C max after 10 runs of Linx, this is 10-12C better than I was seeing. Now I can get back to seeing how far I can push my BCLCK... Here is my current pic

NYlT8.jpg
 
jbeezer said:
My h50 waterblock / pump unit was not firmly seated against the cpu (thermal paste contact on only 60% of the die). It is kind of a tight fight between the rad and the cpu, so the tension from the hoses wants to lift one side of waterblock up. No matter, I was able to get the retention bracket tightened down evenly and completely this time.

TLDR- I'm a noob, h50 water block wasn't properly seated.

I am now reaching 79C max after 10 runs of Linx, this is 10-12C better than I was seeing. Now I can get back to seeing how far I can push my BCLCK... Here is my current pic
Click to expand...

Great. I was going to suggest that you check the heatsink, 90C was way too high especially with the low voltages. Keep pushing it. 3blck up, 3 linx, till it crashes. then last stable setting and try 20 linx. then do 4-8 hour prime. then your set. ;) GL
 
Anyone have any info on this batch, or anything around it:

3941B670

Haven't seen any B batches this high...
 
3nD3aV0uЯ;1035798424 said:
Anyone have any info on this batch, or anything around it:

3941B670

Haven't seen any B batches this high...
Click to expand...



Nothing. It's a B batch so it is a newer batch.

Post some info on it when you get it set up.
 
sfsilicon said:
Fun article: Intel Core i7-920 versus i7-930

http://www.bit-tech.net/hardware/cpus/2010/05/19/intel-core-i7-920-versus-i7-930/1
Click to expand...

A case of don't believe everything you read.

Hate to shoot it down but the 2x 920's I have overclocked hit 4.3 & 4.4. The key is dont leave your mobo voltages to "Auto" and that goes for the 930 if you want to lower heat.

Add to this this very forum is full of dozens of people reaching 4.2 or more on air with the 920.
To be fair the later 920's O/C better than earlier ones which is to be expected.

I dont believe the Multi makes a shred of difference on the 930 but it is down to the individual samples, both awesome cpu's.
 
Just got my i7-930 up to 3.8 GHz today, using a Noctua NH-U12P SE2 on a Gigabyte X58A-UD3R. Using 1.18V and getting a max temp around 65C. I spent a while trying to get to 4.0GHz or higher but I couldn't get it stable (I went up to 1.25V and the temps were getting into the mid 70's so I just stopped.
 
Gadfly said:
I was so impressed by how easily this chip OC's; I thought I would stop my lurking and post my results:

No question the best overclocking chip since the Celeron 300a......


3004B197 | 4200 MHz | Stable | 1.27V | stock air | Yes/No/21x |
3004B197 | 4368 MHz | Stable | 1.30V | water (H50) | Yes/No/21x |
3004B197 | 4410 MHz | Stable | 1.37V | Water (H50 push/pull) | Yes/No/21x |

System details:

Pretty no frills system:

i7 930 retail box
Asus P6X580D Premium
Kingston hyper X DDR3 (3x2gb, 1600mhz, 8-8-8-20)
Thermaltake 850w powersupply (It was on sale!)


I will break out one of my phase systems, blow the dust off them and give it a go when I get some free time.
Click to expand...

User Name: Gadfly
CPU: i7 930
FPO/Batch #: 3004B197
Store: Frys
Purchased In: May 2010

OC: See above for OC's
Stability: All stable
Temp (Idle / Load): 49 / 61 (100% for 4 hours)
Hyper Threading / Turbo Boost / Multiplier: (Example: Yes / Yes / 21x)
Stepping: (Example: 5)
Revision: (Example: D0)
Vcore/Core Voltage: (Example: 1.376V) See above
Cooling: (Example: Air, Water, Phase): See above
Cooler brand/model: (Example: Intel Stock Cooler, Cogage True Spirit 1366) see above

Motherboard: (Example: MSI X58 PRO-E): again, see above
Bios Version: (Example: V8.6): no idea, whatever it came with
Operating System: (Examples: Vista 32, Win7 64): Win7 x64

RAM brand & type: (Example: OCZ 2x2GB DDR3) see above
RAM Part #: (Example: OCZP1333LV2G): Seriously? I don't have a clue..
RAM rated speed: (Example: 1333 MHz) 1600mhz
RAM actual speed: (Example: 1205 MHz - 2x CPU-Z DRAM Frequency) 1600mhz
RAM Latency: (Example: 7-7-7-20 1T) see above
RAM Voltage: (Example: 1.6V) stock
 
lol well I sold my I7-930 system to my uncle. What can I say money talks... He plays a ton of FPS's anyway so he will make good use of all the speed. I really don't need that much for WoW and SC2... Fastest machine I have gotten to build. Now what is the question... maybe I'll get and OC a Thuban to within an inch of it's life lol
 
User Name: Chakkasol
CPU: i7 930
FPO/Batch #: 3951A808
Store: Microcenter, Long Island, NY
Purchased In: Apr 2010

OC: 4.2 Ghz (21x200)
Temp (Idle / Load): 37c/79c linx 20 passes
Temp (Idle /Load): 37c/75c p95 12 hours
Hyper Threading / Turbo Boost / Multiplier: no/no/21
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.325v
Cooling: Corsair H50 with push/pull

Motherboard: Asus P6X58D Premium
Bios Version: 808
Operating System: Win7 x64

RAM brand & type: 3x2gb Mushkin Blacklines 998679
RAM rated speed: 1600
RAM actual speed: 1600
RAM Latency: 6-7-6-18 1T (overclocked from rated settings of 7,8,7,20 1T)
Vdimm: 1.66V
VTT: 1.30v

Rock steady for over a month now. Final overclock settings of both CPU and Memory.
 
Thanks for sharing the journey even for a while. Have fun with your new project.

Mosher said:
lol well I sold my I7-930 system to my uncle. What can I say money talks... He plays a ton of FPS's anyway so he will make good use of all the speed. I really don't need that much for WoW and SC2... Fastest machine I have gotten to build. Now what is the question... maybe I'll get and OC a Thuban to within an inch of it's life lol
Click to expand...
 
Here's my effort, still a work in progress...

User Name: Deimos
CPU: i7 930
FPO/Batch #: 3942A793
Store: XP Computers, Auckland, New Zealand
Purchased In: May 2010

OC: 4.2Ghz
Stability: WIP, LinX 20 Passes successfull
Temp (Idle / Load (LinX)): 34c / 78c)
Hyper Threading / Turbo Boost / Multiplier: Yes / No / 21x)
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.35V
Cooling: Water
Cooler brand/model: Swiftech Apogee GT, Feser Exchanger 360, Swiftech MCR220QP.

Motherboard: P6X58D Premium
Bios Version: 0703
Operating System: Windows 7 x64

RAM brand & type: G.Skill Rip Jaws 12GB
RAM Part #: F3-12800CL8T-6GBRM
RAM rated speed: 1600Mhz
RAM actual speed: 1678Mhz
RAM Latency: 8-8-8-24 2T
RAM Voltage: 1.66V

Update:

LinX completed 20 passes without errors at these settings.
 
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Is it considered stable after 20 passes of Linx? or do you have to Prime for 24 hours as well?
 
Deimos said:
Is it considered stable after 20 passes of Linx? or do you have to Prime for 24 hours as well?
Click to expand...

You want to pass 20 Linx as a minimum. Then you can decide if you want to do 4/8/12/24/48 hours for your long term testing.

The length depends on your own usage and stability requirements. The longer runs really take into account the changing temperature environment that your PC operates as well as your usage profile. For example if you keep your PC on only a few hours a day and turn it off when you don't use it then 4-12 hours should be enough. If you leave it on 24x7 and fold / do critical calculations during that time then I would leave use 24-48 hrs.
 
sfsilicon said:
Thanks for sharing the journey even for a while. Have fun with your new project.
Click to expand...

You Bet! I'll be sharing whatever I build as it pertains to OC'n on the forums, no matter what I am doing.

I still have this I5-750, I am probably going to see how far I can push that, once I get some better memory. Maybe if It's not as good of an Overclocker no one will try to buy it off me lol.

I might go pick up some more memory and a new motherboard today. (Father's day hardware presents oh yea!)
 
Here's my effort, still a work in progress...

User Name: Deimos
CPU: i7 930
FPO/Batch #: 3942A793
Store: XP Computers, Auckland, New Zealand
Purchased In: May 2010

OC: 4.2Ghz
Stability: WIP, LinX 20 Passes successfull
Temp (Idle / Load (LinX)): 30c / 73c)
Hyper Threading / Turbo Boost / Multiplier: Yes / No / 21x)
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.35V
Cooling: Water
Cooler brand/model: Swiftech Apogee GT, Feser Exchanger 360, Swiftech MCR220QP.

Motherboard: P6X58D Premium
Bios Version: 0703
Operating System: Windows 7 x64

RAM brand & type: G.Skill Rip Jaws 12GB
RAM Part #: F3-12800CL8T-6GBRM
RAM rated speed: 1600Mhz
RAM actual speed: 1678Mhz
RAM Latency: 8-8-8-24 2T
RAM Voltage: 1.66V

Update:

LinX completed 20 passes without errors at these settings.

Update 2:
Just fitted my radiator bracket which lines up the fanes with the grills on the side of my case and am now getting 6-8C lower temps!
 
User Name: 2000teg430
CPU: i7 930
FPO/Batch #: 3001A780
Store: Newegg
Purchased In: Jun 2010

OC: 4015Ghz
Stability: WIP = Testing Prime95 now
Temp (Idle / Load): 45c/63c
Hyper Threading / Turbo Boost / Multiplier: Yes / No / 19x
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.3V
Cooling: Water
Cooler brand/model: H50

Motherboard: Asus Rampage III
Bios Version: V0402
Operating System: Win7 64

RAM brand & type: Adata 3x2GB DDR3
RAM Part #: AX3U1600GB2G9-3G
RAM rated speed: 1600 MHz
RAM actual speed: 1691 MHz
RAM Latency: 9-9-9-24 1T)
RAM Voltage: 1.6V

going for 24 hours stable/ x21 multi seems to be the way to go. going to try that next
 
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User Name: Deimos
CPU: i7 930
FPO/Batch #: 3942A793
Store: XP Computers, Auckland, New Zealand
Purchased In: May 2010

OC: 4.2Ghz
Stability: Stable, LinX 20 Passes successfull, 48 hours prime
Temp (Idle / Load (LinX)): 40c / 76c)
Hyper Threading / Turbo Boost / Multiplier: Yes / No / 21x)
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.35V
Cooling: Water
Cooler brand/model: Swiftech Apogee GT, Feser Exchanger 360, Swiftech MCR220QP.

Motherboard: P6X58D Premium
Bios Version: 0808
Operating System: Windows 7 x64

RAM brand & type: G.Skill Rip Jaws 12GB
RAM Part #: F3-12800CL8T-6GBRM
RAM rated speed: 1600Mhz
RAM actual speed: 1600Mhz
RAM Latency: 8-8-8-24 2T
RAM Voltage: 1.64V

Finished, I could push it further but I'm pretty happy with 4.2Ghz, the speed is phenomenal!
 
About to get my hands on a i7 930 Batch# 3951A687. I seen them do 4.2GHz @ 1.29v or less with many users.
Will post results when I receive it.
 
sfsilicon said:
TD had a good deal on Corsair dual channel 1600MHz DDR3 memory. http://hardforum.com/showthread.php?t=1526828
Click to expand...

Wow I totally wiffed this haha

Actually the MB and Mem are acting alot better with another BIOS update. It's at 4Ghz, and the mem is at 1600, tho at not it's advertised timings. (can't get the Ripjaws to go at CAS9, having to use 11... yuck) That said performance has been pretty darn good anyway.

I haven't been paying too close attention to the forums My Wife had to undergo Surgery and it's been hell lately with my 9 month old. I do have one of the Cutest kids in Texas, not that I am Biased /facepalm
 
User Name: zyklon
CPU: i7 930
FPO/Batch #: 3001A903
Store: Komplett - NO
Purchased In: April 2010

OC: 4000 Mhz
Stability: Pass
Temp (Idle / Load): 45c / 83c
Hyper Threading / Turbo Boost / Multiplier: Yes / No / 21x
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.31
Cooling:
Cooler brand/model: TRUE

Motherboard: Gigabyte GA-X58A-UD3R
Bios Version: F5
Operating System: Win7 64

RAM brand & type: Crucial 2x4GB DDR3
RAM Part #: CT3KIT25664BA1339
RAM rated speed: 1333 MHz
RAM actual speed: 1520 MHz
RAM Latency: 9-9-9-25 1T
RAM Voltage: 1.5V
 
User Name: skane
CPU: i7 930
FPO/Batch #: 3943B086
Store: Micro Center, Tustin, CA
Purchased In: May 2010

OC: 4095 (21x195)
Stability: Prime95 LIPFFT 28 hours, SIPFFT 25 hours, Blend 32 hours
Temp (Idle / Load): 40c / 80c, ambient room temp 80f - 87f (hot room)
Hyper Threading / Turbo Boost / Multiplier: Yes / No/ 21x
Stepping: 5
Revision: D0
Vcore/Core Voltage: CPU-Z readings, load / idle, 1.304 / 1.360, LLC Disabled
QPI / DRAM voltage: 1.3
Cooling: Water
Cooler brand/model: EK Supreme HF, stock plate, Swiftech MCP655, PA 120.3, (3) Scythe SFF21E

Motherboard: ASUS P6X58D-E
Bios Version: 0303
Operating System: Win7 64

RAM brand & type: Mushkin Enhanced Redline 6GB (3 x 2GB)
RAM Part #: 998805
RAM rated speed: DDR3 1600 (PC3 12800)
RAM actual speed: 1563
RAM Latency: 7-8-7-24 2N
RAM Voltage: 1.62
 
Hopefully I'll have a new data point to add here in a couple of days (once the MB and memory get here).
Just picked up a batch 3004B176 from Microcenter yesterday. Pack. Date is 06/02/10 and I haven't seen it mentioned anywhere, yet. (Unnerving? Exciting? :p)
 
User Name: WorldExclusive
CPU: i7 930
FPO/Batch #: 3951A687
Store: Second Hand

OC: 4209 (200x21) / 4039 (192x21 / 1.25V)
Stability: Prime95 5hr / LinX 20 Passes
Temp (Idle / Load): 41c / 81c
Hyper Threading / Turbo Boost / Multiplier: Yes / No/ 21x
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.31
QPI / DRAM voltage: 1.28
Cooling: Water
Cooler brand/model: Corsair H50 P/P w/Cooler Master Excalibur Fans

Motherboard: ASUS Rampage III Extreme
Bios Version: 0802
Operating System: Win7 64

RAM brand & type: OCZ 6GB (3 x 2GB)
RAM Part #: OCZ3F1600LV6GK
RAM rated speed: DDR3 1600
RAM actual speed: 1603
RAM Latency: 8-8-8-24
RAM Voltage: 1.64

Seems like the Corsair H50 is 5C hotter at full load than the MegaShadow cooler I had previously.
The chip boots into Windows every time unlike the chip I had before, it wouldn't boot into Windows above 4.0GHz.
I'm sure this chip can go up to 4.4-4.5GHz with custom water cooling. Great Batch.
 
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User Name: syncore
CPU: i7 930
FPO/Batch #: 3002A844
Store: Microcenter, Atlanta, GA
Purchased In: July 10, 2010

OC: 4010 MHz
Stability: 25 total LinX runs, 4 hours Prime95, 10 IBT
Temp (Idle / Load): 38C / 74C
Hyper Threading / Turbo Boost / Multiplier: Yes / No / 21X
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.29375
Cooling: Air
Cooler brand/model: Prolimatech Megahalems Rev. B Push/Pull SFF21G

Motherboard: ASUS P6X58D Premium
Bios Version: 0813
Operating System: Windows 7 Ultimate 64bit

RAM brand & type: Mushkin Enhanced Redline 3x2GB DDR3
RAM Part #: 998805
RAM rated speed: 1600 MHz
RAM actual speed: 1531 MHz
RAM Latency: 7-8-7-20 1T
RAM Voltage: 1.64V
 
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User Name: (getyasome)
CPU: i7 930
FPO/Batch #: (3939C199)
Store: (EBAY, Sellers name , bxiao001 , $262 Shipped )
Purchased In: ( July 2010)

OC: (Example: 4217.3 MHz)
Stability: (12h Prime95, IntelBurn Test v2, 5 pass/ max )
Temp (Idle / Load): ( 39c / 70c)
Hyper Threading / Turbo Boost / Multiplier: ( No / No / 21x)
Stepping: ( 5)
Revision: ( D0)
Vcore/Core Voltage: (1.30V) (1.88v CPU PLL) (QPI/DRAM CORE V 1.30) (DRAM Bus 1.66v)
Cooling: (Water)
Cooler brand/model: (HEATKILLER Rev3.0 / Feser XChanger Triple 120mm/ Swiftech MCP355 /XSPC Acrylic Top )

Motherboard: (ASUS P6T Deluxe V2 LGA 1366 )
Bios Version: ( V 1003 )
Operating System: ( Win7 Ultimate 64)

RAM brand & type: (G.SKILL Trident 12GB (6 x 2GB) 240-Pin DDR3 SDRAM DDR3 2000 (PC3 16000) Triple Channel )
RAM Part #: (F3-16000CL9T-6GBTD)
RAM rated speed: ( 2000 MHz)
RAM actual speed: ( 1611 MHz / Working on XMP Settings , hit 1896 so far with a 3.80 GHZ Overclock)
RAM Latency: ( 7-7-7-19 2T )
RAM Voltage: ( 1.6V)


http://i.imagehost.org/0587/oc_july.jpg


I'm having a bit of stability issues with HT turned on. It seems this chip needs 1,32 v - 1,34 v on the CPU Core and QPI Dram voltage to run 4/8 threads.

Any help is appreciated , Thanks.


**BIOS Settings**

2 SAMSUNG Spinpoint F3 HD103SJ 1TB / Raid 0

Ai Overclock Tunner / Manual
CPU Ratio / 21.0
SpeedStep / disabled
BCLK / 201
PCIE / 100
DRAM Frequency / DDR3-1611 MHz
UCLK Frequency / 3224 MHz
QPI Link Data Rate / 7254 MT/s

RAM Latency: ( 7-7-7-19 2T )

CPU Voltage / 1.30
CPU PLL voltage / 1.88
QPI/DRAM Core Voltage / 1.30
DRAM Bus Voltage / 1.66

CPU Differental Amplitude / 800 mV
CPU Spread Spectrum / disabled
PCIE Spread Spectrum / disabled

Everything else set to / Auto


Advanced Tab / CPU Configuration

Hardware Prefetcher / enabled
Adjacent Cache Line Prefetcher / enabled
Execute Disable Bit / enabled


Everything else disabled.
 
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User Name: Cafuddled
CPU: i7 930
FPO/Batch #: 3945B502
Store: Aria.co.uk
Purchased In: 07/2010

OC: 3.80GHz
Stability: 5 Hours OCCT, 10 Hours Prime95, 48 Hours Uptime
Temp (Idle / Load): 35c / 60c Highest core temp (CPU sensor is 23c / 49c)
Hyper Threading / Turbo Boost / Multiplier: (Example: Yes / No / 19x)
Stepping: 5
Revision: D0
Vcore/Core Voltage: 1.18v (All others motherboard standard 'not auto')
Cooling: Thermaltake Kandalf LCS

Motherboard: Asus P6X58D-E
Bios Version: V0303
Operating System: Windows 7 x64

RAM brand & type: Corsair XMS3
RAM rated speed: 1600MHz
RAM actual speed: 1600MHz
RAM Latency: 9-9-9-21 1T
RAM Voltage: 1.64V

I can go all the way over 5GHz but I choose the one above as this will ensure best performance while giving the chip as long a life as possibile. Also temeratures became unsustanable at core level 95c. And the water temperature would heat up too leaving a domino effect to heat. I guess the 3 120mm fan radiator is just not good enough for the sustained 160watts that was being output.

On another note I can run the CPU at under 1.0v under stock speeds (only 43 watts usage), so i'm guessing I got very lucky with the CPU.
 
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how much vcore bump is usually needed to go from 3.8 to 4.0 for a d0? what about 4.0 to 4.2?
 
From my limited experience, 0.02v to go from 3.8-4.0 and 0.04-0.06v to go from 4.0-4.2.

All of this greatly depends on the CPU you have. Out of the three CPUs I've had, going from 4.0-4.2 required the largest voltage boost.
 
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