Smithfield @ 4.6ghz

[berkut]

Hello you guys !

I had a chance to play with a P4 XE 840 on a Intel reference motherboard for it.

I do not have any screenshots yet (will post them today) but i would like to say something about this processor.

Its a MONSTER. The amount of heat it generates is ENORMOUS !!!!

At 4.2ghz 1.5V the prometeia was almost overloaded, but still worked (im referring to 2 cores loaded - POV ray), the condenser was scorching hot, i have never seen any phase change system so hot. Fans @ 2200rpm.

When only 1 core was used (SUPER PI) there were no problems, prommy handled it w/o any problems, just like a regular prescott.

At 4.4ghz 1.5V / 2 cores loaded we have passed the border line and temps skyrocketed to -23C, POV ray hanged. If i had a chance to mod it i think i could force her to work with such load. Still one core works ok, prommy's fine

After this any clocking is hell on earth... The system wont boot @ 23 multi = 4.6ghz, 200mhz fsb.

As you might guess the bios is preety f**ked up, there are o/c options but they dont always work as set. The multi, VID can me normally set (multis 14-60, 1 step), Vcore all the way up to 1.6V. The fsb can be set at 533mhz, 800mhz, 1066mhz. Later it can be increased by a certain amout of precentages. The MCH voltage can be set higher all the way up to 1.75V if i remember corectly.

The memory can be set at 333,400, 533, 666, 800mhz (treat this as dividers), timings were set at 4-3-3-12, 2V. 266mhz up in the bios, 666mhz mem divider and the fsb was incresed by %, thats our memory speed.

After some fondling with the bios i got her up to 4.6ghz SUPER PI stable with a lousy time of 11min 30s, we didnt have a system prepared for benching but we will have today. The mem timings are really sloppy, as well as clocks on them. We can run pov ray at this speed but the prometeia is very quickly overloaded.

Settings were:
1066mhz fsb, 16 multi, 1.6V, 666mhz mem divider, +8% fsb, 4-3-3-12 @ 2V 2gb Patriot DDR2.

Screenies and more pics today!



Me installing the prommy on the 840.



System running in the bios.

Am i the firt to put phase change on a XE 840?



berkut

[bachus_anonym]

Definetely you're the first one here to slap phase-change on a Dual Core :thumbsup: Hell, probably even first ever! Sweet!
Dig out those screenies, berkut! Show us some Dual Core powa! POVray, Cinebench... Or 3DMark2003 CPU Bench... Or PCMark04... Can't wait, man!

Good to see you back in a game, berkut

[ozzimark]

At 4.2ghz 1.5V the prometeia was almost overloaded, but still worked (im referring to 2 cores loaded - POV ray), the condenser was scorching hot, i have never seen any phase change system so hot. Fans @ 2200rpm.

you mean the condenser was actually hot to the touch? that's insane!

[berkut]

It was over 45C. I count keep my hand on it and belive me, im resistant to heat and cold.

We will post a lot of benchmarks and screenies today. We will be working after 9pm in poland = day time in the US. We hope to have a normal internet connection this time.

I NEEEEDDD to put my cascade on this baby... I have to force this idea :P

If i had this mobo for a week you would see much more XTREME scores...

I need to figure out how to change the fsb in windows, i can bet this cpu will work @ 4.7-4.8ghz if the clock is raisen in windows. This bios is just sooo screwed up....

[(sin)morpheus]

That's friggin insane! That much heat?! Jesus christ that sounds like it's a heat monster. I guess it should be expected. After all, it is just 2 prescott's slapped together.

[berkut]

as long as you use single thread applications it works like a normal prescott. like super pi, 2dmark 2001 etc. But when there are 2 threads, like POV ray, CINEBENCH etc. you can hear the PWM's scream for mercy.

single threaded apps work better with HT off as far as i tested. affinity set for them to cpu1 and system processes are set to cpu0.

[bachus_anonym]

How much heat does Smithfield 840 EE dissipate at stock? It's rated at MAX 115-130W or sth like that, right?
So @ 4.6GHz and 1.5v that must be somewhere around 250W

Looks like, at least watercooling will be needed to get anywhere past 4GHz with that processor...

[berkut]

it almost works @ 4ghz stock cooler. But the clock is reduced cause of heat problems so the scores are actually lower.

We hope we wont be seeing 20C temps. with -30C evaporators...

*edit*

bachus - 1.6V

my Dad just noticed

CAN DO, WILL DO, HAVE DONE

The shirts tag From a US base in Spandain, Germany

[blinky]

wow thats insane

whats the stock speed on those bad boys?

[berkut]

3.2ghz

[grimREEFER]

wow thats insane

whats the stock speed on those bad boys?

3.2ghz, and right now, he has the power of four 4.2ghz processors.

[$ilver]

holy ..... really insane ..
only thing to say

[georgesod]

Let us see some scores

[x714n]

i think the heat is crazy
btw, im waiting for more pics

[berkut]

there will be a SUPER big suprize guys today.... probably a knother ownage like this XE, guess what :P:P


this weekend ill have some unholy fun with dual core cpu's

OWNAGE

but... the cascade cant be used, im limited to a prometeia mach II gt only

[buff]

3.2ghz, and right now, he has the power of four 4.2ghz processors.

nope, it would be the power of two 4.2Ghz with HT.......HT DOSN'T give it the power
of a dual core, just able to use 2 threads. and then there is the problem of the lousy way Intel decided to due dual core, what a waist of bandwidth.......

[[XC] moddolicous]

wow, thats really something. I never thought that it could be hot to the touch. Send those parts over to PCICE and get it under -100 degrees and get it up to 5ghz. 4*5ghz=

[[XC] leviathan18]

nice man why you cant use the cascade???? we want to see that baby higher

[perkam]

Nice ...lol how far did you take it on air ??

Perkam

[saaya]

so where is it running 4.6ghz? :P

post some scores and shots!
im surprised the prommie could keep up with those high clocks actually, i thougt it would overheat at lower speeds already

[berkut]

A few more hours, we have jobs etc.

And prepare for the realy BIG suprize

[x714n]

A few more hours, we have jobs etc.

And prepare for the realy BIG suprize

im still waiting for the BIG surprize and more screens

[saaya]

A few more hours, we have jobs etc.

And prepare for the realy BIG suprize

ok, big surprise, im curious
if your busy at work then why did you post here? and how come you just posted again?
post some screenshots and results already!

[berkut]

i dont have any job now, i will have it later when ill be clocking :P

you will like it

[$ilver]

@saaya ... was denkste .. glaubste was wird nochma was ^^ ?