4.65G i7 920 - EX58-UD5P on LN2

[ZoLKoRn]

Last night i try to play my i7 920 with Gigabyte EX58-UD5P on LN2 and well it can make impressive results on my i7 920 to WR now!(maybe) :D

System Setup....

i7 920(ES)@~4.65GHz, Temperature control about -25C to -30C all benching
ZK rev2.1 ln2 pot :p:
GIGABYTE EX58-UD5P, F1b bios
G.SKILL 12800C7-2GBHZ/12800C9-2GBNQ
ASUS 4870X2 TOP CFX
Western Raptor 150
Silverstone OP1000W
Vista SP1

Setup Pic.... :D

http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/IMG_0466.jpg

Results...

Max bclk&CPU freq. - 4657MHz (221x21) temps ~ -25 ํC
http://valid.x86-secret.com/cache/screenshot/444909.png
http://valid.x86-secret.com/show_oc.php?id=444909

Spi 1M/32M@4.65GHz, temps ~ -30 ํC
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/pi1m_max.png

http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/pi32_920_4.65-cl777.png

Pifast@4.65GHz
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/pifast_4.65g_ud5p_920.png

Wprime@219bclk(4.6GHz) - for Wprime it sure for running under 4.38GHz from real multiplier coz cpu have load over 2xthread
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/wprime_4.6g_ud5p_920.png

PCMark05@217bclk(4.51GHz) and for pcmark too it'll run under 4.3GHz on benching time :)
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/pc05_4.55g_ud5p_920.png

some action under CPU load for Turbo mode with CPU freq.
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/00.png
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/01.png

Some 3DBenching@~4.5GHz, for 2k3 and 2k5 i setting CPU affinity to only CPU0/CPU1 it'll running on 21x multi if don't setting multiplier will drop back to 20x on benching time :)
http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/2k3_4.55g_ud5p_920.png

http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/2k5_4.55g_ud5p_920-2.png

http://overclockzone.com/zolkorn/year2008/11/core_i7_920WR/2k6_4.55g_ud5p_920.png

[SAE]

Very impressive results with 920 there. :up:
But I thought the multiplier would not drop back to 20 if the cpu was cooled well - even running multithreaded (from what I read)?!

[StrangerS]

Nice Job ! ZolKoRn. It's Monster 920. :shocked::up:

[quintus]

nice rezults;)
y didn't u use your c02 cascade?

[N3RO]

I've already asked before, can you tell me what thermometer is this?

Nice job there :up:

[hicookie]

looks this board loves i7 920, good job, bro:D

[Benny Lodewijk]

Amazing abang Paizol !!!

[Pt1t]

Very nice ZoLKoRn


nice rezults;)
y didn't u use your c02 cascade?

no , 920 with high Bclk seems to dont like too low temp. Under cascade it s very hard to oc it :(

[ZoLKoRn]

Thank you to all :up:


Very impressive results with 920 there. :up:
But I thought the multiplier would not drop back to 20 if the cpu was cooled well - even running multithreaded (from what I read)?!

I'm not sure to all... but after i'm alot of tried with Spi if i running one or two thread multiplier not drooped but if three thread multiplier will drop to 20x, May be turbo mode can work on 100% load only two-core if over two-core it'll back to normal mode :)


I've already asked before, can you tell me what thermometer is this?

Nice job there :up:

What you mean ? if brand name it's CIE 307P :)


Very nice ZoLKoRn



no , 920 with high Bclk seems to dont like too low temp. Under cascade it s very hard to oc it :(

Yah i think that too look like it don't like low temps coz from i tried it not different between -30C and -50C and maybe not stable on low temps but if on idle load my chip it fine to about -15C :)

[Pt1t]

Thank you to all :up:



I'm not sure to all... but after i'm alot of tried with Spi if i running one or two thread multiplier not drooped but if three thread multiplier will drop to 20x, May be turbo mode can work on 100% load only two-core if over two-core it'll back to normal mode :)



What you mean ? if brand name it's CIE 307P :)



Yah i think that too look like it don't like low temps coz from i tried it not different between -30C and -50C and maybe not stable on low temps but if on idle load my chip it fine to about -15C :)

my both 920 works fine not bclk overclocked under -100° but one time oc , i need to reduce temp to arround -40°

[Oliver]

thx for posting good work

Thomas, that is also a good explanation, when you are looking at 965xe high clocks, bclk is not high but temp is low, considered to -40

[Hazzan]

nice to see everytime your bench sesion Paziol.......keep pushing !!

[Pt1t]

thx for posting good work

Thomas, that is also a good explanation, when you are looking at 965xe high clocks, bclk is not high but temp is low, considered to -40

I m running 965xe + 4.9ghz @ -105° without issues.

[Achill3uS]

great job ZoLKoRn :) how about the bclk clocking on just air with this setup?

[FUGGER]

Huge oc on the low end chip :up:

[Oliver]

I m running 965xe + 4.9ghz @ -105° without issues.
ya and what bclk?

[Harshal]

Crazy numbers on a not so extreme chip bro!! :D

[AuDioFreaK39]

did you have to bypass Overspeed Protection in the BIOS?

[begrip]

very nice that setFSB works with core i7 :D

[2chesapeakes]

Very nice results. November is going to be an expensive month for me

[Razzz]

Really good work!

[BulldogPO]

What kind of voltages did you give ZoLKoRn?
Bios shots?

[WaterFlex]

Impressive clock, well done, mate :UP:

[Eeky NoX]

Quiet well done yeah ! Now let's see what's about a i7 940 would be able to ;)

[dinos22]

excellent job zolkorn and Gigabyte

221 is as good as it will ever get unless intel shows mercy and gives us lower QPI dividers it seems form saaya's thread heh

[youngpro]

nice work zolkorn as usual =)

maybe p55 or its equivalent they will show some mercy?

[ZoLKoRn]

Thank you to all :up:


great job ZoLKoRn :) how about the bclk clocking on just air with this setup?

~ 215MHz if only Spi1M :)


Huge oc on the low end chip :up:

Thanks boss! :D


did you have to bypass Overspeed Protection in the BIOS?

I'm don't setting anything with it :)


excellent job zolkorn and Gigabyte

221 is as good as it will ever get unless intel shows mercy and gives us lower QPI dividers it seems form saaya's thread heh

Thanks m8 :up: well from my ideal i think QPIclk it can't run over 4000MHz coz
after i tried alot of time to pass it over 221 to 222.xx(setFSB can't adjust on 222.00MHz :()
it failed every time because if Bclk over 222.5MHz QPI will over 4000MHz you can calculate from....

QPIclk = Bclk x QPI multiplier (4.8GT=18x, 5.86GT=22, 6.4GT=24)

btw. maybe 222MHz Bclk it'll work on my chip if i adjust it by ET6 coz 222x18 = 3996MHz QPI :D

[dinos22]

maybe time to fire off an email to GB guys and see if Intel has allowed for some more ratios to reduce qpi frequency heheheh

[ZoLKoRn]

maybe time to fire off an email to GB guys and see if Intel has allowed for some more ratios to reduce qpi frequency heheheh

Yah... i forgot something!!! EX58-UD5 it have lower QPI for setting but... why i haven't try on it :p: so next time i'll try ;)

[dinos22]

it does?
sweeeeeeeeeeeeeeeeeeeeeeeeeeeet :D

[ZoLKoRn]

Yep! look at from bios screen it have " Slow mode " for setting ;)

http://overclockzone.com/zolkorn/year2008/11/gigabyte_ex58ud5p/bios/IMG_0327.jpg

[dinos22]

i should have my board soon
cant wait to do some testing.....i hope that slow mode will alow to break past 220MHz QPI

that would certainly save ppl money and let them buy and bin 920 chips :D

if that slow mode is something like x28 i'm gettin a boner right now :D

i'm assuming that you get QPI speed by dividing 8000 by those numbers

so 8000/36=222MHz
8000/28=285MHz DROOOOOOOL

285*20 =5700MHz boioioioioioioioing :D

[hicookie]

Thank you to all :up:



~ 215MHz if only Spi1M :)



Thanks boss! :D



I'm don't setting anything with it :)



Thanks m8 :up: well from my ideal i think QPIclk it can't run over 4000MHz coz
after i tried alot of time to pass it over 221 to 222.xx(setFSB can't adjust on 222.00MHz :()
it failed every time because if Bclk over 222.5MHz QPI will over 4000MHz you can calculate from....

QPIclk = Bclk x QPI multiplier (4.8GT=18x, 5.86GT=22, 6.4GT=24)

btw. maybe 222MHz Bclk it'll work on my chip if i adjust it by ET6 coz 222x18 = 3996MHz QPI :D

hmm.. let me explan about some i7 to you
1. BCLK just a base clock and nomatter cold or airflow, perform the same
i can run 222MHz with StockFAN and very hot.
2. QPI BUS = BCLK*QPI Multi ( 4.8GT/s by x36,5.86GT/s by x44, 6.4GT/s by x
48) n it's not hard to figure out how much Maximum QPI Bus can go. i see
many x58 both stock around same range.
3. QPI BUS not affect too much performance, i have explaned to some friend
of mine, but it affects to server platform.

Hicookie

[Oliver]

interesting

thx for showing pic zolkorn

lol Dino, ya lets hope

thx for explanation Hicookie

[slash777]

What is the difference between UD5 and UD3P ?

[Fr3ak]

Slow mode with a BCLK of 133 MHz results in a QPI clock of 67 MHz. I didn't do any testing with the board, because the board I have at hand doesn't want to boot as soon as I change the memory multiplier in BIOS with a 965 XE. With a 920 it works fine, but I am doing the roundup with a 965 XE, so I have to wait for another board =/

But 67 MHz sounds like it will be way slower than 4,8 GT/s.

[Chri$ch]

Slow mode doesn´t help for higher BCLK...

my max. is 222Mhz, but i have also some problems....

My i7-920 doesn´t work with multiplier 20 over ~190Mhz BCLK, with multi 19 is 218Mhz BCLK benchstable (3D) and 211Mhz Primestable.

[ZoLKoRn]

hmm.. let me explan about some i7 to you
1. BCLK just a base clock and nomatter cold or airflow, perform the same
i can run 222MHz with StockFAN and very hot.
2. QPI BUS = BCLK*QPI Multi ( 4.8GT/s by x36,5.86GT/s by x44, 6.4GT/s by x
48) n it's not hard to figure out how much Maximum QPI Bus can go. i see
many x58 both stock around same range.
3. QPI BUS not affect too much performance, i have explaned to some friend
of mine, but it affects to server platform.

Hicookie

Thank you for sharing infos bro! ;)

btw. your QPI multi and my QPI multi it same time hahaha but you'r multi twice with me ;)


Slow mode doesn´t help for higher BCLK...

my max. is 222Mhz, but i have also some problems....

My i7-920 doesn´t work with multiplier 20 over ~190Mhz BCLK, with multi 19 is 218Mhz BCLK benchstable (3D) and 211Mhz Primestable.

Yes! Slow mode doesn´t help for higher BCLK i already tried it again today too :(

[antoine76]

Thank you for sharing infos bro! ;)

btw. your QPI multi and my QPI multi it same time hahaha but you'r multi twice with me ;)



Yes! Slow mode doesn´t help for higher BCLK i already tried it again today too :(

Maybe new bios will fix it ;)

[Chri$ch]

i tested Bios F2, F3a, F3d and F3e... slow mode doesn´t help ;)

[dinos22]

Thank you for sharing infos bro! ;)

btw. your QPI multi and my QPI multi it same time hahaha but you'r multi twice with me ;)



Yes! Slow mode doesn´t help for higher BCLK i already tried it again today too :(

ah ok
so limit is somewhere else

i wonder what is limiting the BCLK clocks

[s e t h]

lovely results ZoLKoRn :D

btw anyone tried freesing the x58 chipset yet?

[stasio]

GA-EX58-UD5 Bios F3 (http://europe.gigabyte.com.tw/FileList/BIOS/motherboard_bios_ga-ex58-ud5_f3.exe)

[giraffen]

i'm very impress. Nahealm looks more and more promising

[xwings]

amazing Mr.ZoLKoRn

[shoopdawoopa]

:up:great results

[vservera]

Nice score m8

[eva2000]

Nice clocks, interesting about those temps - good to know my Kayl Black FrozenSS 1/4HP will have some use hehe

[The-Fox]

My Max on water with i920 was about 4510 Mhz, SuperPi (1M-32M) Stable and also SS max.
On Dryice i was able to Push about 150Mhz higher, 4650 Mhz, SuperPi 1M stable with 4 Cores (HT=off).
That is what 99% of the chips will do, some rare chips made it to the 4800Mhz zone.

[libertysyclone]

My Max on water with i920 was about 4510 Mhz, SuperPi (1M-32M) Stable and also SS max.
On Dryice i was able to Push about 150Mhz higher, 4650 Mhz, SuperPi 1M stable with 4 Cores (HT=off).
That is what 99% of the chips will do, some rare chips made it to the 4800Mhz zone.

does anyone have a theory on why they arent responding well to subzero?

Your setup is making me think that water is enough for them.

Do you know what your water temps are looking like? do you think the GTZ really transfers heat well enough for the i7's?

To the OP this is a great clock for a base chip!

[The-Fox]

They respond very well to subzero but the QPI is limiting at 4 Ghz so it doesn't matter if it's -30 or -190.

Water is great for 24/7 run with a decent overclock for i7.
I can work on 4.2Ghz with HT=ON 24/7 and my temps top at about 70c degrees for the highest core, the colder ones are about 68c degrees.
The GTZ is an awesome block, I would definitely buy it for the i7.

[panuza]

:shocked:................:up: