Core i7 Overclocking

chainbolt · 15th November 2008, 7:18 PM

System:

CPU voltage: 1.525

Note: The 920 is locked. It's overclocked by increasing the QPI frequency from 133.2 MHz to 186 MHz. That brings it to 186MHz x 20 = 3720 MHz. However, because of "Turbo Mode" 2 speed bins are added automatically to the default multiplier of x20. That brings the CPU frequency to 186 MHz x 22 = 4092 MHz. The system was running for 1 hour Prime 95 at this frequency.

booj · 16th November 2008, 3:56 PM

I've reached the limits of the stock cooler i think.. can't wait to get something decent to test at 20x multi

210 bclk looks good for some good clocks. I'll try clocking up in windows using easy tune... lol idling near 50degrees

no chance of running any stabilty test on this POS cooler

BlackSniper87 · 16th November 2008, 9:17 PM

Quote:

Originally Posted by stablez

we need temp rerading for cooler selector.
when the core goes hot selector;
coretemp does or doesnt read i7 temps yet is that why.
What is the bios temp say please you mad beauty. 920 all the way.
thats wot overclocking is about.
@ past there extreme ed. 3.33ghz yep yep.

speak english PLEASE.

but yes the results are promising especially on the junior most version

Tech-Kid · 16th November 2008, 9:52 PM

Holy shit that similarly OC'ed 920 is whopping my Q9450.

I did 32m in 13m 48s.

Computer on steroids.

booj · 18th November 2008, 9:39 PM

Woohoo! Now that I have a 1366 mount for my TR Ultra 120 I can ditch the garbage stock cooler

Temps are much much better

Did an hour and a bit of Prime 95 at 3990mhz 1.36v. Hyperthreading disabled

mojom@n · 18th November 2008, 10:54 PM

Quote:

Originally Posted by booj

Woohoo! Now that I have a 1366 mount for my TR Ultra 120 I can ditch the garbage stock cooler

Temps are much much better

Did an hour and a bit of Prime 95 at 3990mhz 1.36v. Hyperthreading disabled

Nice. Are you also finding that the multi drops from 21x to 20x if you use ET6 to up the BUS in windows?. Also i can't choose 22x in CMOS when Turbo is enabled or not max is 20x but is 21x in windows..

I have very similar test lol.

Tech-Kid · 18th November 2008, 10:59 PM

How I wish I had money....

booj · 18th November 2008, 11:05 PM

Quote:

Originally Posted by mojom@n

Nice. Are you also finding that the multi drops from 21x to 20x if you use ET6 to up the BUS in windows?. Also i can't choose 22x in CMOS when Turbo is enabled or not max is 20x but is 21x in windows..

I have very similar test lol

heh I think we have the same batch cpu, same mobo and BIOS

And i wouldn't be surprised looking at your ram that we have the same IC's

I haven't used et6 to increase clocks yet, still mucking around in the bios mainly

21 and 22x aren't selectable multipiers, although once the override is enable the cpu effectively has a default multi of 21

mojom@n · 18th November 2008, 11:31 PM

Quote:

Originally Posted by booj

heh I think we have the same batch cpu, same mobo and BIOS

And i wouldn't be surprised looking at your ram that we have the same IC's

I haven't used et6 to increase clocks yet, still mucking around in the bios mainly

21 and 22x aren't selectable multipiers, although once the override is enable the cpu effectively has a default multi of 21

I just tried with hyperthreading enabled and the multi dropped back to 20x while doing the prime test. My guess is that we have either D9GTS or D9GTR IC chips for our ram. Turning Hyperthreading off right now as i have no real use for it any way.

chainbolt · 19th November 2008, 10:35 PM

Here is my result for the i7 965, aircooled, same system as above:

Apparently the 920 is a much better deal.

stablez · 20th November 2008, 6:45 PM

The V8 cooler looks wickeed for this cpu.

booj · 20th November 2008, 9:31 PM

Pushing the little beastie a bit more now

passed a 4.2ghz wprime 1024m with multithreading enabled

Also smashed my pb superpi 32m by nearly 30 seconds at 4.2 ghz vs 5.05ghz e8600

and the ram can be tightened from there, but cas8 isn't having any effect in times or everest bandwidth

I need to test more

I've had it up to 215bclk, so I reckon some benches at 215x21 ~4.5ghz might be doable hehe... we'll see.. might be too optimistic going by other results

onoff312 · 20th November 2008, 10:50 PM

Seems the 920 and 965 both clock just as good as each other stuff the 965 bring on the 920

How do you guys afford the $2000+ asking price for one of those babys.

gmeup · 24th November 2008, 10:01 AM

Quote:

Originally Posted by onoff312

Seems the 920 and 965 both clock just as good as each other stuff the 965 bring on the 920

How do you guys afford the $2000+ asking price for one of those babys.

Only chainbolt has one i think and its an es anyway.

From what ive seen there is no need to get the EE chip the 920 is pulling 4ghz with ease.

chainbolt · 24th November 2008, 12:23 PM

Quote:

Originally Posted by gmeup

Only chainbolt has one i think and its an es anyway.

From what ive seen there is no need to get the EE chip the 920 is pulling 4ghz with ease.

Yep, the 920 seems to be a very good choice. No need for the excessively expensive 965. You get thre 965 maybe 200 to 300 higher, but that's not even remotely worth the 1000$ it cost you more.

15th November 2008, 7:18 PM	#1
chainbolt Deputy of Love Join Date: Jun 2001 Location: Tokyo Posts: 54,801	Core i7 Overclocking System: CPU voltage: 1.525 Note: The 920 is locked. It's overclocked by increasing the QPI frequency from 133.2 MHz to 186 MHz. That brings it to 186MHz x 20 = 3720 MHz. However, because of "Turbo Mode" 2 speed bins are added automatically to the default multiplier of x20. That brings the CPU frequency to 186 MHz x 22 = 4092 MHz. The system was running for 1 hour Prime 95 at this frequency. Last edited by chainbolt; 15th November 2008 at 7:42 PM.

16th November 2008, 3:56 PM	#2
booj Member Join Date: May 2004 Location: Adelaide Posts: 264	I've reached the limits of the stock cooler i think.. can't wait to get something decent to test at 20x multi 210 bclk looks good for some good clocks. I'll try clocking up in windows using easy tune... lol idling near 50degrees no chance of running any stabilty test on this POS cooler __________________ Good Trades: ksentinel, Fischbitz, xms3500, bob(nz), snappy1

16th November 2008, 9:52 PM	#4
Tech-Kid Member Join Date: Jul 2008 Posts: 251	Holy shit that similarly OC'ed 920 is whopping my Q9450. I did 32m in 13m 48s. Computer on steroids. __________________ Intel Core 2 Quad Q9450 @ 3720MHz 1.248v + Gigabyte P35-DS3P Rev 1.1 F10 + G-Skill PI PC2-8500 @ 1080 + Antec E.W 500 + Thermaltake Big Typhoon VX + ATi HD3850 770/1030 + 1TB HDD + Pioneer 215BK + Coolermaster Elite 330

18th November 2008, 9:39 PM	#5
booj Member Join Date: May 2004 Location: Adelaide Posts: 264	Woohoo! Now that I have a 1366 mount for my TR Ultra 120 I can ditch the garbage stock cooler Temps are much much better Did an hour and a bit of Prime 95 at 3990mhz 1.36v. Hyperthreading disabled __________________ Good Trades: ksentinel, Fischbitz, xms3500, bob(nz), snappy1

18th November 2008, 10:59 PM	#7
Tech-Kid Member Join Date: Jul 2008 Posts: 251	How I wish I had money.... __________________ Intel Core 2 Quad Q9450 @ 3720MHz 1.248v + Gigabyte P35-DS3P Rev 1.1 F10 + G-Skill PI PC2-8500 @ 1080 + Antec E.W 500 + Thermaltake Big Typhoon VX + ATi HD3850 770/1030 + 1TB HDD + Pioneer 215BK + Coolermaster Elite 330

19th November 2008, 10:35 PM	#10
chainbolt Deputy of Love Join Date: Jun 2001 Location: Tokyo Posts: 54,801	Here is my result for the i7 965, aircooled, same system as above: Apparently the 920 is a much better deal.

20th November 2008, 6:45 PM	#11
stablez Member Join Date: Apr 2006 Location: Humidycrib Posts: 3,791	The V8 cooler looks wickeed for this cpu. __________________ raupanui

20th November 2008, 9:31 PM	#12
booj Member Join Date: May 2004 Location: Adelaide Posts: 264	Pushing the little beastie a bit more now passed a 4.2ghz wprime 1024m with multithreading enabled Also smashed my pb superpi 32m by nearly 30 seconds at 4.2 ghz vs 5.05ghz e8600 and the ram can be tightened from there, but cas8 isn't having any effect in times or everest bandwidth I need to test more I've had it up to 215bclk, so I reckon some benches at 215x21 ~4.5ghz might be doable hehe... we'll see.. might be too optimistic going by other results __________________ Good Trades: ksentinel, Fischbitz, xms3500, bob(nz), snappy1

20th November 2008, 10:50 PM	#13
onoff312 (Banned or Deleted) Join Date: Apr 2008 Location: Canberra Posts: 813	Seems the 920 and 965 both clock just as good as each other stuff the 965 bring on the 920 How do you guys afford the $2000+ asking price for one of those babys.