Core i7 Overclocking by Batch #

[DavyBoy]

I have been playing around with my chip, and the highest I have had it so far is 4.61GHz.

Sub 9 seconds with Super PI 1m:



CPUZ verification @ 4.6GHz:



Far from being Prime or LinX stable, but at least I know the chip has potential, I will try to get it stable @ 4.4/4.5GHz once I get my custom loop setup in the next couple of weeks..

Batch number 3921A624.

[Chicken Patty]

^^good job man, if you disable HT, you might be able to get a bit more out of it and super pi runs improve significantly being a sigle threaded benchmark

[imo]

My updated 24/7 settings 4200MHz @ 1.22v 4 core 8 thread

(less voltage, prime stable)

[SilverSilence]

Batch #: 3910A500
OC: Core i7 920, 4.0GHz (20x200MHz) [All power saving features disabled]
Hyper Threading: Enabled
CPU: 1.312v
DRAM: 1.5v
QPI/Vtt: 1.215
IOH Core 1.1v
Cooler: Prolimatech Megahalems w/ 2x 70CFM Fans (Push/Pull)

[dylskee]

Good to see some later batch numbers, I was starting to get nervous. I've got a 920 batch#3849B040 and didn't see any in the spreadsheet. I'm still going to be a week or two before mine is up and running.

[Esajuppeli]

Hey. Im new one here at Xtremesystems. And I already have question. Will Xeon W3550 work on my Rampage II GENE? I'm buying it to replace my i7 920. My setup at the moment is:

Asus Rampage II GENE (0203 BIOS now)
Intel Core i7 920 @ 4,3Ghz HT On @ 1.400V (Watercooling, Apogee GT)
3 x 1Gb Corsair XMS3 @ 1229Mhz @ 7-7-7-18
XFX GTX295 (EK Waterblock)
1.5TB Barracuda + 250Gb Samsung
Coolermaster HAF932
Enermax Modu 82+ 625W
Windows XP Professional SP3

[zalbard]

Hey. Im new one here at Xtremesystems. And I already have question. Will Xeon W3550 work on my Rampage II GENE?

Don't see why not.

[iboomalot]

why are you buying it again???

[Dahmer]

Batch #: 3910A500
OC: Core i7 920, 4.0GHz (20x200MHz) [All power saving features disabled]
Hyper Threading: Enabled
CPU: 1.312v
DRAM: 1.5v
QPI/Vtt: 1.215
IOH Core 1.1v
Cooler: Prolimatech Megahalems w/ 2x 70CFM Fans (Push/Pull)

Have you tried x19 or x21(turbo) ?
My cpu needed over 1.3V with x20 multi but when going to an odd multi voltage requirement dropped and temperatures dropped too, should give it a try
Also with temperatures like that you might be able to push it a little big higher.

[DavyBoy]

Thanks Chicken Patty, I will try disabling HT to see if I can push for more out of this chip.

I should have it under water in the next couple weeks, so I am kinda hoping that I can get 4.4/4.5GHz stable for 24/7 usage.

I was happy with it at 4GHz, but it seems that practically everyone is running 4GHz now, and I don't like being the same as everyone else!!!

I'm currently trying to get 4.2GHz stable on air.

[Chicken Patty]

Thanks Chicken Patty, I will try disabling HT to see if I can push for more out of this chip.

I should have it under water in the next couple weeks, so I am kinda hoping that I can get 4.4/4.5GHz stable for 24/7 usage.

I was happy with it at 4GHz, but it seems that practically everyone is running 4GHz now, and I don't like being the same as everyone else!!!

I'm currently trying to get 4.2GHz stable on air.

Yeah, at least for super PI you are better off with HT disabled. What are your temps under load with the TRUE? ALso what clock/voltage.

[Biker]

I7 920 Batch 3850B177

4.2Ghz air run with ultra 120 Xtreme:



CPU 1.3125v
Ram 1.64v
ICH 1.21v
IOH 1.15v
QPI 1.48v

QPI is pretty high because the ram is running @ 2000

All volts are MM verified...

I had the CPU 4.2 prime stable @ 1.265v on my bench OS but nothing installed to take the SS

[Chicken Patty]

I7 920 Batch 3850B177

4.2Ghz air run with ultra 120 Xtreme:

http://i263.photobucket.com/albums/i...m/42GhzRun.jpg

CPU 1.3125v
Ram 1.64v
ICH 1.21v
IOH 1.15v
QPI 1.48v

QPI is pretty high because the ram is running @ 2000

All volts are MM verified...

I had the CPU 4.2 prime stable @ 1.265v on my bench OS but nothing installed to take the SS

very good bro, temp are a bit high for comfort, but considering it's on air, very good. I know all rigs are different, but I can do 4.2 GHz stable at 1.24v. If you can get it that low, or lower, temps should improve considerably.

[Biker]

very good bro, temp are a bit high for comfort, but considering it's on air, very good. I know all rigs are different, but I can do 4.2 GHz stable at 1.24v. If you can get it that low, or lower, temps should improve considerably.

How right you are

Basically my main OS install is over 4 years old (been keeping it alive somehow ) and it is not much good for benching....


However my bench OS is a much better prospect


I7 920 Batch 3850B177 air run True Ultra 120 Xtreme single push




Voltages much more under control now

Vcore 1.265v
QPI 1.455v (QPI is high because ram is running @ 2000)
IOH 1.21v
ICH 1.11v
Ram 1.64v

LLC on

All checked with MM @ load

[Chicken Patty]

How right you are

Basically my main OS install is over 4 years old (been keeping it alive somehow ) and it is not much good for benching....

However my bench OS is a much better prospect


I7 920 Batch 3850B177 on air True Ultra 120 xtreme single push


[IMG]http://i263.photobucket.com/albums/ii156/skummm

Voltages much more under control now

Vcore 1.265v
QPI 1.455v (QPI is high because ram is running @ 2000)
IOH 1.21v
ICH 1.11v
Ram 1.64v

LLC on

All checked with MM @ load

told ya I didn't try any lower than that, but maybe you can go even lower at that clock. So your temps dropped at least over 10-12ºc

[imo]

Max stable BCLK achived so far on Air

[zalbard]

Max stable BCLK achived so far on Air

What PCI-E frequency do you use?

[Biker]

told ya I didn't try any lower than that, but maybe you can go even lower at that clock. So your temps dropped at least over 10-12ºc

*grin*

Yep.

QPI voltage is still a bit high for long term but everything else is sitting just fine for 24/7/365

Might drop the ram down to 1600 for long term use though and the QPI is happy with 1.25v at that speed...

[Chicken Patty]

*grin*

Yep.

QPI voltage is still a bit high for long term but everything else is sitting just fine for 24/7/365

Might drop the ram down to 1600 for long term use and the QPI is happy with 1.25v at that ram speed...

just save this setting in the BIOS, and save the one with the ram and qpi lower for daily usage. Whenever you are going to bench, load the one with the higher ram speed and bench

[Chicken Patty]

*grin*

Yep.

QPI voltage is still a bit high for long term but everything else is sitting just fine for 24/7/365

Might drop the ram down to 1600 for long term use and the QPI is happy with 1.25v at that ram speed...

here was mine when I was running it at 4.2 GHz. I overclocked more with that same voltage, so I didn't try to go lower. But I think it could have been stable at a bit less voltage than that.

[imo]

What PCI-E frequency do you use?

110

[imo]

What PCI-E frequency do you use?

wot about you? what batch and speed/volt?

[zalbard]

110

I'd be careful using non-stock PCI-E frequency 24/7 myself. It may kill your HDDs / sound cards / NICs.

wot about you? what batch and speed/volt?

I'm in process of RIG upgrade atm, will let you know soon.

[imo]

here was mine when I was running it at 4.2 GHz. I overclocked more with that same voltage, so I didn't try to go lower.

Hi
nice, whats your batch?

[imo]

I'd be careful using non-stock PCI-E frequency 24/7 myself. It may kill your HDDs / sound cards / NICs.

I'm in process of RIG upgrade atm, will let you know soon.

oh i thought you asked my max.... 24/7 is 101