PCPER.com: 5 GHZ+ Phenom II Overclock on Dry Ice, 6Ghz on LN2

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11-21-2008, 08:03 AM
Rammsteiner

Quote:

Originally Posted by Ozzfest05

IMO the current AM2 offerings arent very impressive im not saying they wont perform but I would rather go with the feature stacked intel 1366 boards which look nice offer performance and are stacked with features

I hope you're not fishing at huge heatsinks, fancy colours and putting 'Xtreme' on every part of the board right?

Quote:

Originally Posted by leoy

Top end 790fx costs 170 euros....
That gx tested only costs 120 eyros...:p::p::p:

Top end 790FX is 130 Euro's or so. Besides that, 790FX is already enthusiast chipset anyway:p:

Quote:

Originally Posted by Donnie27

I have a friend who's under NDA giving me what info he can and that's why I said I believed AMDin the other thread, remember? Doesn't change folks here with grudges uh?

Why the need to explain the other side of cynicism? I mean, if he was loyal or whatever, Im sure he wouldnt have an Intel rig:confused: You do know what loyalty stands for, right? Also loyalty doesnt have to be a bad thing, but it depends a bit on what subject though:rolleyes:

Also Ive this certain issue not to believe certain people most of the time if the majority of their posts contains too much under aged context and wrong intentions. Somehow it makes me think this certain group of people are very unreliable:shrug:

Maybe more people have this issue. And in all fairness, I dont see why they should change their mind when they meet certain people who fit in this certain group:rolleyes: If a plane is considered unreliable, and this airplane compagny says it flew without issues 50Km for the first time in 1 year, I still wouldnt want to be in there.

Disclaimer, I love flying, not a rant about planes:p:
11-21-2008, 08:07 AM
GAR

Quote:

Originally Posted by saaya

average 3.6 on air with 1.4v, more voltage doesnt help really...

some chips can do 4ghz on air (TRUE) with 1.4v but not that many...

Thats a bummer. So far about 75% of i920's are hitting 4ghz with 1.4v + some only needed 1.25-1.35v. Mine does 3.8GHZ with 1.27v
11-21-2008, 08:07 AM
Sparky

Quote:

Originally Posted by Ozzfest05

IMO the current AM2 offerings arent very impressive im not saying they wont perform but I would rather go with the feature stacked intel 1366 boards which look nice offer performance and are stacked with features

Yeah, but all those features cost $$$$ and lots of it. The prices on those boards are waaay too high IMO. My old DFI 790FX-M2RS was almost perfect feature-wise, just a little beefier digital PWM is all it really needed IMO :yepp:
11-21-2008, 08:08 AM
Donnie27

Very niceeeeeeee pics. Thanks!

http://www.xtremesystems.org/forums/...6&postcount=15

Quote:

Originally Posted by Donnie27

Alright 4+GHz overclocking (water), sweet, time to move back to AMD Yes, I believe them:up:.
11-21-2008, 08:09 AM
Hornet331

Quote:

Originally Posted by Rammsteiner

Top end 790FX is 130 Euro's or so. Besides that, 790FX is already enthusiast chipset anyway:p:

Search for the Foxconn A79A-S or the ASUS M3A79-T Deluxe. ;)
11-21-2008, 08:12 AM
JumpingJack

Quote:

Originally Posted by Rammsteiner

Im sorry to say, well, sort off, since that post is weird.

Why wouldnt a C2/i7 be able to hit 8Ghz? I mean, I never would have thought P4 couldt hit 8Ghz, but it did. Of course I know the architecture of a P4 is different then C2/i7, but still. I didnt expect in all fairness that i7 would go straight up to 4Ghz without a lot of issues.

The stead march toward higher and higher clockspeed has reached a fundamental limit above and beyond the power wall. The ability to clock a device 'faster' depends on more than just the max power. A transistor can only clock as fast as it's ability to 'turn on', a group of transistors can only clock as fast as the ability for the cumulative circuit to reach the correct evaluation phase of the 'on' or 'off' state, again by flipping transistor states.

The steady march to more clock as asymptotically approached a flat line, with smaller and smaller incremental increases one lithography node to the next. This is driven in part by smaller gains in transistor performance each iteration, and also driven by added complexity of the circuit design (architecture/IPC).

Jack
11-21-2008, 08:13 AM
Slovnaft

that insulation looks insanely easy compared to x58 boards thanks for the pics.

and hans, posting on XS? wow! i love your site! ALL my backgrounds are from chiparch :D great info-we need this level of understanding.
11-21-2008, 08:14 AM
PetNorth

Quote:

Originally Posted by RPGWiZaRD

I was already assuming that, 1.45v is still a decent amount on aircooling for 45nm process. I was thinking along the lines ~1.365v Intel <-> ~1.45v AMD whereabouts I concider safe 24/7 usage. Now if AMD's Phenom II is more resistant I don't know of course but I said I was only assuming anyways. So yea some ~1.45v overclocks would be interesting.

Quote:

Originally Posted by GAR

Thats a bummer. So far about 75% of i920's are hitting 4ghz with 1.4v + some only needed 1.25-1.35v. Mine does 3.8GHZ with 1.27v

You have to keep in mind vcore default value. For reference, vcore default for Shanghai is 1.35v http://products.amd.com/en-us/Optero...il.aspx?id=494

And this is amazing, because we could think 1.35v is high for a 45nm, but it seems it isn't applicable to AMD 0.45 process, because at the same time, it has a low power consumption. So, for example, 1.50v on air (11% more than default) doesn't seem specially high for these processors. On the contrary, it is even modest :P

I don't know what in hell AMD has done with 0.45, but indeed it seems to be a fantastic work :clap:
11-21-2008, 08:15 AM
Donnie27

Quote:

Originally Posted by Hornet331

Search for the Foxconn A79A-S or the ASUS M3A79-T Deluxe. ;)

Foxconn $160 to $210 and Asus $187 to $265. In both cases, I'd NOT shop at the cheapest sites, they have low ratings. I've been shopping:up: The X58 that I'm also looking at cost $220 and Another I'm told will cost $190, stay tuned!
11-21-2008, 08:19 AM
Calmatory

Quote:

Originally Posted by PetNorth

You have to keep in mind vcore default value. For reference, vcore default for Shanghai is 1.35v http://products.amd.com/en-us/Optero...il.aspx?id=494

And this is amazing, because we could think 1.35v is high for a 45nm, but it seems it isn't applicable to AMD 0.45 process, because at the same time, it has a low power consumption. So, for example, 1.50v on air (11% more than default) doesn't seem specially high for these processors. On the contrary, it is even modest :P

I don't know what in hell AMD has done with 0.45, but indeed it seems to be a fantastic work :clap:

I've lived under assumption that the high temps by higher Vcore aren't really the reason to hesitate bumping Vcore, rather electromigration and such being feared.
11-21-2008, 08:21 AM
Gautam

Quote:

Originally Posted by Nedjo

who asked for pictures?

Macci rides again :D

I spy a Dragon Evo. :D
11-21-2008, 08:48 AM
Nedjo

Quote:

Originally Posted by Gautam

I spy a Dragon Evo. :D

the dragon is so cool! way better than spider:

http://farm4.static.flickr.com/3254/...f5936c17_b.jpg
11-21-2008, 08:49 AM
Sparky

So Nedjo, is this the kind of thing you were hinting at a few days ago? :D
11-21-2008, 08:51 AM
NH|Delph1

Quote:

Originally Posted by Nedjo

I don't think that Andreas would lie:

http://www.nordichardware.com/news,8389.html

I'm not under NDA. ;)

6.3GHz seems correct too.

It's just so sweet when you're right ;)

I still say 3.6GHz is going to be the number most people will hit on air. 4GHz is a bit much.

//Andreas
11-21-2008, 09:04 AM
G0ldBr1ck

This is great news! I realy didnt believe that Deneb was going to have so many improvements but its obvious now that its all true.
11-21-2008, 09:07 AM
Junos

Nice... wasn't expecting this at all. :)

Hopefully they'll be compatitle with my old 690G MSI board, so I can throw my 4000x2 out of the window (you can always dream, eh?).
11-21-2008, 09:12 AM
Calmatory

Quote:

Originally Posted by NH|Delph1

I'm not under NDA. ;)

6.3GHz seems correct too.

It's just so sweet when you're right ;)

I still say 3.6GHz is going to be the number most people will hit on air. 4GHz is a bit much.

//Andreas

Why not beyond 3,6 GHz? CPU just won't go further regardless of Vcore with that temperature? Or high temps due to high Vcore?
11-21-2008, 09:14 AM
G H Z

Quote:

Originally Posted by Nedjo

Macci rides again :D

He must feel really good about this, really nice to see AMD kicking up a little dust again.

Quote:

Originally Posted by Gautam

I spy a Dragon Evo. :D

Is Vince getting any royalties ;) :D
11-21-2008, 09:20 AM
informal

Quote:

Originally Posted by Calmatory

Why not beyond 3,6 GHz? CPU just won't go further regardless of Vcore with that temperature? Or high temps due to high Vcore?

He speaks of regular air cooling(ie. stock) versus higher end air cooling.
With higher end air you should hit 4Ghz+.Voltage is not an issue with Deneb and it runs fairly cool(be it stock or OC/overvolt).
11-21-2008, 09:22 AM
G0ldBr1ck

so could the rumored 4.0-4.3 FX actualy be in the future for Deneb with HighK?
11-21-2008, 09:27 AM
FlanK3r

Quote:

Originally Posted by Shintai

Lets just hope the retail ones can keep the same numbers. And hope these aint another cherry picked ones like the 3Ghz Phenom that was earlier.

Also as said the 6Ghz already changed. Plus here is abit more about the rest:

So no 4Ghz without water. And even with phase its mid 4Ghz at 1.7V. And the 5Ghz+ was 1.9V.

man, old Phenom has coldbug about -30 degrees, this not, now is 6.3GHz. Not 4GHz without water?Lol, i seen 2 Phenoms II at 4GHz with air and one with BOX cooler! U must only waiting :), OC with air Phenom II is from 3.7-4.3GHz ...
11-21-2008, 09:29 AM
Rammsteiner

Quote:

Originally Posted by Hornet331

Search for the Foxconn A79A-S or the ASUS M3A79-T Deluxe. ;)

Does a high price automatically mean a top-end board then? DFI Lanparty DK 790FXB-M2RS, very cheap and just as good:rolleyes:

Quote:

Originally Posted by JumpingJack

The stead march toward higher and higher clockspeed has reached a fundamental limit above and beyond the power wall. The ability to clock a device 'faster' depends on more than just the max power. A transistor can only clock as fast as it's ability to 'turn on', a group of transistors can only clock as fast as the ability for the cumulative circuit to reach the correct evaluation phase of the 'on' or 'off' state, again by flipping transistor states.

The steady march to more clock as asymptotically approached a flat line, with smaller and smaller incremental increases one lithography node to the next. This is driven in part by smaller gains in transistor performance each iteration, and also driven by added complexity of the circuit design (architecture/IPC).

Jack

So... due to C2's improved IPC and more complex architecture this would actually be impossible? But then again, ain't a P4 more complex than its previous Pentiums as well? I dont know, it's a question:p:

Quote:

Originally Posted by Nedjo

the dragon is so cool! way better than spider:

http://farm4.static.flickr.com/3254/...5936c17_b.jpg]

Whoa, looks damn nice! Also looks a bit like Ati Radeon pictures on the box:cool:
11-21-2008, 09:30 AM
CCUABIDExORxDIE

so that phenom II was running at full LN2 temps? woot for no measured coldbug.
11-21-2008, 09:38 AM
demonkevy666

I agree on the pwm level of Am2/Am2+ boards. the asus 790fx sb750 had the highest 8+2 phase. the rest are all 4 or five and some have a +1.
11-21-2008, 09:42 AM
Olivon

Finally ... !

Really a great newz :up:

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