http://techreport.com/news.xAccording to AMD's latest roadmaps, 45nm Phenom II processors are just a few weeks away from launch—they'll materialize at the Consumer Electronic Show in early January. Not a bad time to start gauging the overclocking potential of these chips, right?
AMD took care of that itself at an event in Austin this morning, where it showcased four overclocked Phenom II systems. TR editor-in-chief Scott Wasson was on the scene, and while AMD didn't allow attendees to take pictures, he jotted down a few details.
The slowest system—cooled with a heatsink and fan—managed to reach just under 4GHz with a 1.55V core voltage. With liquid cooling, AMD successfully pushed a 45nm Phenom II in another machine just over the 4GHz mark. That required kicking up the CPU voltage to 1.6V, however. For the other two systems, AMD took out the big guns. One was strapped to a phase-change cooler and reached the mid-4GHz range at 1.7V, while the fastest system managed to break the 6GHz barrier using liquid nitrogen (which kept the core temperature down to a chilly -185°C).
Considering the latest leaked roadmaps suggest the fastest Phenom II launch CPU will run at 3GHz, those are pretty decent overclocks. We should note that AMD was using Crysis to test stability, however, and that only stresses a couple of cores at best.
Air/Watercooling:
AMD overclocks 45nm Phenoms to 4GHz and beyond
http://techreport.com/news.x
Air Cooling - Abaixo de 4Ghz - 1.55V
Watercooling - Acima 4Ghz - 1.6V
phase-change cooler - 4.5Ghz - 1.7V
liquid nitrogen - 6Ghz+ - 1.9V
Para testarem a estabilidade usaram o Crysis.
Ainda não há estimativa de preços?
Eu vou comprar um sistema novo em janeiro,mas estes só devem vir em fevereiro ou mais tarde pra cá...
Essas voltagens é que metem medo, tendo em conta que são processadores de 45nm
A questão aqui é que sendo ou não sendo CPU´s de laboratorios com os Phenom I a AMD não fez nada disto nem dentro nem fora portas e agora fez, portanto o potencial de overclock está la e muito maior que nos phenom I.
Operação de markting tb não foi de certeza porque foi uma sessão muito restrita e grande parte dos Media nem sequer tiveram la presença.
Simplesmente a AMD está a abrir pouco ou nada o jogo como fez com a HD 4800 e deve ser regra a continuar em todos os proximos lançamentos. Mais vale deixar o concorrente em duvida que dar deitar todas as cartas para jogo ainda a mais de 1 mês do lançamento. Ao mesmo tempo vai deixando os entusiastas mais informados em modo stand-by até ao dia 8 Janeiro para depois decidirem por que via vão optar.
Não fez foi pouco !
Esqueceste-te já dos Phenom de 65nm que davam "3GHz a ar", que a empresa apreogava também à porta fechada com "canned benchmarks" obscuros umas meras semanas antes do lançamento ?
Quando finalmente chegaram as versões de produção, descobriu-se que os clocks reais não só eram significativamente mais baixos (1.9 a 2.3GHz), como o OC dos chips era tão complicado que mesmo os 3GHz anteriormente demonstrados pela AMD só muito dificilmente eram atingidos com aircoolers ou mesmo WC.
Nem sequer a versão com o bus TLB corrigido afastou esses problemas.
Nessa altura não me lembro de ver qualquer slide deste género:
Neste caso ate mostra o Phenom I realista relativamente ao OC.
We've seen Deneb overclocked today
Written by Fuad Abazovic
Thursday, 20 November 2008 23:04
Austin 2008: Close to 4GHz
We've head a chance to see Deneb, 45nm K10.5 with 6MB L3 cache and we can confirm that this CPU overclocks well. We've seen close to 4GHz overclocked part with AMD stock cooler on air and if you use water you will get over that milestone.
With LN2 you will get even higher than 5GHz and it will run stable in any of these circumstances.
We will get you more details soon but I've just wanted to share with you guys that Deneb exist and a few people could see and play with it in Austin, Texas Lone star campus. Stay tuned for more.
Em 2008, certo, mas olha quando fizeram a demo:
http://www.xbitlabs.com/news/cpu/display/20070726145313.html
http://forums.overclockers.com.au/showpost.php?p=9683483&postcount=1Hey peeps!
I quite literally just got back to the hotel from AMD's Austin campus after a day with some rather interesting information being disclosed and freely discussed.
Unfortunately, the level of free discussion outside of the room is heavily covered by NDA so I'm unable to announce specific details. But this is what I can say...
The new platform from AMD will be called 'Dragon' and will be focused around the new 'Phenom II' processors, 4800-series Radeon graphics cards and 7-series chipset based motherboards.
Here are some general performance observations that I can disclose:
Phenom II and the Dragon platform can overclock to 4GHz on air - we were demonstrated a system @ 3.9GHz using stock bus frequency and HT link frequency and a multiplier set at 19.5x. This was done with 1.55v BIOS set. This system was looping endlessly through a Crysis time demo without issue; by the end of the day it was past 100 loops.
The platform core specifications demonstrated were as follows:
Phenom II processor
GIGABYTE GA-MA790GP-DS4H motherboard
Radeon HD4870X2 graphics
OCZ Reaper memory
While the unit demonstrated was @ 3.9GHz, we later had a hands on benching period with the new platform and I was able to quite easily reach this stated 4GHz frequency.
This same platform also exceeded 5GHz on liquid nitrogen cooling. But what was perhaps the coolest (no pun intended) specific of this demonstration was the processor operating and even cold booting at -196 degrees Celsius - that's right, AMD has no cold bugs of any kind, at all for Phenom II!
During this LN2 session the system was demonstrated operating in excess of 5GHz and running 1.95v BIOS set (1.936v CPU-Z read in Windows) and as stated, at the maximum lowest temps available with liquid nitrogen - time to find a liquid helium supplier peeps!
I'm gagged by the NDA on any further information and specifications such as model numbers, product features + specs, stock clock frequencies or even specific overclocked frequencies (i.e. LN2 max) as well as pricing, competitive performance or bench scores. So please, don't even bother asking me these questions as I cannot and will not answer these questions - at least until the NDA drops.
What I wanted to do with this post is at least let you all know that there is hope still for AMD and that while I've harped on about the LN2 experience, the overclocking ability is solid for LN2, phase, water and air cooling methods.
Cheers guys
http://www.legitreviews.com/article/836/1/AMD Phenom II X4 Processors Spotted
When it comes to desktop processors the AMD Phenom series of processors hasn’t been too phenomenal when it comes to performance or efficiency, but AMD hopes to turn that around in the months to come. AMD recently invited some key members of the press down to their Austin, Texas headquarters to take a look at Phenom II. This processor has been known under the code name ‘Deneb’ for many months now, but Phenom II is what the processor will be launched as.
It’s no secret that this processor is built using the 45nm process, and while AMD was shrinking the die they took things apart and made it more efficient and improved how fast the core can be run up to. AMD had a display set up for the media that showed overclocking performance that included air cooling, TEC/Water Cooling, Phase Change Cooling, and lastly liquid nitrogen cooling for the top end. The overclocking performance ranged from just under 4GHz to well over 5GHz on the LN2 system pictured below. AMD Phenom processors were sensitive to temperature changes and once you got sub-zero they often had negative scaling when it came to overclocking. To be more specific, most Phenom processors hit a wall at -20C, but with Phenom II this wall has been removed. AMD showed us that the temperature bug is long gone by running an AMD Phenom II X4 processor at 1.95V and at below -190C. Not bad for the Phenom II X4 processor as it was a C2-H stepping, which is one stepping before what will be on the retail chips that launch in January.
AMD doesn’t want us to give exact frequencies for each level of overclocking, but we can say that we saw it running on the desktop and during gameplay. All of the systems were running Crysis, which doesn’t put a heavy load across all four cores, but it does show that it the system was stable enough to run a big name title. It looks like AMD Phenom II processors are on the right track and when they launch during CES it will mark a new chapter for AMD when it comes to processors. AMD is still sticking with the idea of an AMD platform and while the first AMD Phenom processor was designed to be used with Spider, the new Phenom II processor is designed to be run on the Dragon platform. The Dragon platform will consist of a Phenom II processor, a Radeon HD 4000 series graphics card and an AMD 790GX chipset powered motherboard. With this platform AMD thinks they have the right special sauce to take on Intel in the mainstream market, which they think is critical in this day and age with an uncertain economy. We’d have to agree with them on that aspect as not too many people are running out and spending $3,000-$5,000 on high-end gaming systems right now.
If AMD wanted to get some viral marketing going by showing off Phenom II X4 overclocking it seems that they have hit the nail on the head. Phenom II X4 scales much better than the original Phenom X4 processors, which is obvious as they showed overclocking on several different systems with numerous processors. AMD also said that these weren't totally cherry picked samples and that these results are about average from what they are seeing with early samples. If that proves true on retail samples it will make for an interesting part! Reaching 3.2GHz on a current Phenom X4 is a great overclock, but reaching nearly 4GHz on Phenom II X4 is an awesome overclock.
http://www.hexus.net/content/item.php?item=16373From what we saw, Deneb isn't shaping up to be a Core i7-killer, it's not imbued with the necessary architectural chutzpah to do that, but there's enough MHz oomph under the hood, it seems, to bring AMD's upcoming CPUs back into the minds of the value-conscious enthusiast.
Intel worried? No, but the chip giant may need to re-jig the pricing of its mid-range 45nm Core 2 CPUs if it intends to keep AMD on a tight leash.
The news of a potential AMD CPU mini-revival can only be construed as a positive sign for the consumer, and we wait with bated breath to see how the new 45nm CPUs shape up when released in less than two months time.
São literalmente escolhidos a dedo....