Yonah Yonah Yonah

It sounds like it should be part of a song, but really, it's just the core name of Intel's most promising dual and single core approaches that will launch in Q1'06. Anand gets uncomfortably giddy whenever someone mentions Yonah, although some of the revelations like clock speed were a large letdown to us. Yonah is definitely something that we talk about a lot and the 65nm dual core processor based on an evolved Dothan is really exciting. Even with the letdown on clock speed, there are more SKUs than we had originally thought, which should make low end laptops and media centers really competitive on the low end. Media centers, you say? Yes, it looks like Pentium M finally does have some sanctioning by Intel for use outside of laptops and blades. The bold chipsets indicate discrete graphics only.

Intel Single Core Value Desktop Lineup LGA775

Chipset

FSB Clock

Memory Clock

Launch

955XM

667MHz

DDR2 667MHz

Q1'06

945GM

667MHz

DDR2 667MHz

Q1'06

945PM

667MHz

DDR2 667MHz

Q1'06

945GMS

667MHz

Single Channel

DDR2-533

Q2'06

940GML

533MHz

DDR2-400

Q2'06

915GM

533MHz

DDR2 533MHz

Soon

915PM

533MHz

DDR2 533MHz

Soon

915GMS

400MHz

Single Channel

DDR2 400MHz

Soon

910GML

400MHz

DDR2 400MHz

Soon


Intel is launching two chipsets dedicated specifically for small form factor notebooks and PCs; 915GMS (soon) and 945GMS (Q2'06). 915GMS utilizes single channel DDR2-400 and 400FSB, while the much more powerful 945GMS will use single channel DDR2-533 and a 667FSB. For laptops, avoiding dual channel memory isn't a bad idea, but judging by the performance increase that we saw when running Dothan on an 865PE motherboard using ASUS' adapter, Pentium M can certainly make use of additional memory bandwidth - compression, games, and workstation tasks all showed pretty significant performance increases. We got a small taste of Pentium M in the digital home at Computex this year with some demonstrations of 915GMS from manufacturers like Shuttle and Intel. Don't expect HTPCs all over to start using Pentium M in troves, but at least it's a win for those who enjoy Pentium M over Pentium 4 and Pentium D.

Intel's integration of 945 and 955 into the next generation Centrino platform (also known as Napa) will come in three main flavors (945GM, 945PM and 955XM) with 945GMS taking up the SFF route a quarter later. Napa gets all the function from each of the existing chipsets, but also adds iAMT to the Yonah processor, Vanderpool, 3945ABG wireless and Gigabit Ethernet. This all has us very excited until we caught a glimpse of the launch speeds and prices.

Intel Dual Core Mobile Lineup LGA775

Processor

Speed

L2 Cache

FSB

Launch

Cost

Pentium M x50

2.16GHz

2MB

667MHz

Q1'06

$637

Pentium M x48 LV

1.66GHz

2MB

667MHz

Q1'06

$316

Pentium M x40

2.0GHz

2MB

667MHz

Q1'06

$423

Pentium M x38 LV

1.50GHz

2MB

667MHz

Q1'06

$284

Pentium M x30

1.83GHz

2MB

667MHz

Q1'06

$294

Pentium M x20

1.66GHz

2MB

667MHz

Q1'06

$241

Pentium M TDB

1.66GHz

2MB

667MHz

Q2'06

$209

Pentium M TDB LV

1.20GHz

2MB

533MHz

Q2'06

???

Pentium M TDB LV

1.06GHz

2MB

533MHz

Q2'06

???

Pentium M 780

2.26GHz

2MB

533MHz

Q2'05

$637

Pentium M 770

2.13GHz

2MB

533MHz

Now

$637


The new Yonah chips are denoted with an "x" in front of their product name because we do not know where they will fall into Intel's product naming yet - although 8xx or 9xx would be the best candidates. There are two surprises here, the first obviously being the low clock speed. We had expected a higher clock than the existing Pentium M chips, much in the same manner that Dothan is capable of higher speeds than the earlier Banias chips. However, just as Cedar Mill and Presler come with similar clock speeds to their 90nm predecessors, Yonah is initially slated to launch at about the same speeds as current Dothan parts. The clock ramp will surely come eventually, but don't expect phenomenal clock speeds particularly for a first generation. Intel claims that the TDP for 2.0GHz Yonah will be around 31W and 15W for the Low Voltage version.

As a dual core solution, Yonah is the most advanced (other than perhaps Itanium 2 Monticeto) solution that we have seen out of either AMD or Intel. This has a lot to do with the fact that Yonah isn't just two cores slapped together (notice that they share the same cache). It is being built from the ground up as a dual core solution, similar to how Banias was designed specifically with the goal of low power and mobility. We have high hopes that it will realize better performance scaling than some of the other Intel dual core chips. Here's where things take an interesting twist.

The second big surprise are the "TBD" (To Be Determined) chips. These are single core Yonahs. Since all the original documentation about Yonah claimed that the two cores were intertwined, our guess is just that the single core versions are identical to the dual core versions with a single core disabled. Given the added complexity of a second core, we wouldn't be surprised to find that the single core Yonahs will initially be composed of chips with one faulty core - rather than throw out the whole core, Intel can just deactivate the faulty half and sell it at a reduced price. We've been seeing this for quite a while with reduced cache versions of some processors, and it makes sense from a manufacturing and yield perspective. For $209, however, a single core 1.66GHz Yonah would have to have some pretty amazing performance increases over the existing Pentium M 740 and 735 that cost just over $200 today. It looks like we will find out a year from now.

Yonah has other endeavours as well, including a server variation on the chip (Sossaman) and Celeron M. Sossaman will begin to replace Low Voltage and Ultra Low Voltage versions of Xeon as early as Q1'06. Pentium M has already proven itself extremely valuable in the blade market, so dual core, dual processor configurations seemed almost inevitable. The first dual processor configurations of Sossaman are expected in Q2'06. Yonah already has some extremely interesting design features, but whether or not they scale to two or more processors is something that we definitely plan on exploring more in the future.

Celeron M for Yonah will have 1MB L2 cache and run at 533FSB. Unfortunately, it does not appear that Yonah Celeron M will utilize EIST. Details on Celeron M seem very sparse, but we do know that the new Celeron M lineup will start 4xx.

Desktop Roadmaps Continued The Server Side of Things
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  • mino - Wednesday, June 15, 2005 - link

    ONE IMPORTANT QUESTION:
    (mostly to autor)

    WILL YONAH BE 64-bit ????

    please tell us.
    every glimpse appreciated;)
    Reply
  • mino - Wednesday, June 15, 2005 - link

    My "typing" is becomming even funnier sometimes, unfortunatelly ;) Reply
  • mino - Wednesday, June 15, 2005 - link

    Finally intel execs came to their senses. people should applaud them all at once! They are evidently going to get rid of those super-trooper power drainers they are producing for last 2 yrs.

    BTW you all seeing performance parity arise just remember tah if AMD needs it even wouldn't need K9 to compete with Merom(unless it will be some miracle chip). They could yust release quad-core server chips plus some 3.2-3.4 desktop K8+ dualies and be done with it !

    It's becomming so funny that first chips able to really axploit potential of DDR2(666+),technology som much tooted and pushed by Intel, will be 65nm X2's.
    Ironic, isn't it?
    Reply
  • Zebo - Wednesday, June 15, 2005 - link

    Merom Merom Merom Kris! is the only thing Intel has I'm waiting for since I dont use notebooks. Does'nt quite sound as nice does it.:P


    I just can't see the extra cache doing much for the 9xx series, much like the 6xx did'nt do squat.. So the only thing that remains to be seen and potentially exciting is power draw and overclockabilty of the 65nm desktop chips.
    Reply
  • Calin - Wednesday, June 15, 2005 - link

    But on a much more serious note, I think VT would be good if it would work with very little or no OS support. I remember horror stories with Windows and Linux partitions, and I really don't want to find out how much Windows on VT can destabilize the rest of operating systems running on virtual partitions Reply
  • Calin - Wednesday, June 15, 2005 - link

    Executive series of mainboards probably have air conditioned as standard Reply
  • Shintai - Wednesday, June 15, 2005 - link

    Hmm..I think people have too high expertations after the few last years of gigahurtz.

    I think 65nm will give us affordable AMD64 X2s maybe a speedbump to 5000 and 5200. But I think it will be more focused on quad cores, cheaper manufactoring and lower power consumption.

    P4 65nm. I think we might see the 4Ghz now. But else the same thing as with AMD, cheaper dualcores, lower power usage.

    Yonah is abit different, size the manufactoring cost of Yonah wont increase that much compared to a P4/X2 dualcore. But yonah sports SSE3, some 20-30% faster speed at the same frequency. So Yonah will be desktop and server attractive. More than Dothan is now. Plus it keeps its low powerusage. Also a speedbump is likely here.

    But remember people, building an X2 or P4D is alot more expensive than a singlecore. So 65nm is not the "Yiiihah" speedbumpage. But more like the 1100$ AMD 4800 X2 down to 3-500$ thing.

    So I wouldn´t really expect much other than more cores and alittle tweak here and there until K9 and Meron/Conroe.
    Reply
  • Furen - Wednesday, June 15, 2005 - link

    If I ran two operating systems at once, I'd basically idle on one while working on the other one. So my overhead for running to OSes would mostly be memory. It'd be like dualbooting without the booting, you just switch your active OS whenever you wish to. It'd be great for those of us who prefer *nix OSes but NEED windows for specific tasks *cough*games*cough*.
    The problem, of course, will end up being how much additional software will be needed to do this (not to mention how much it will cost ^^), I'm guessing it wont be just installing both OSes and then booting them.
    Reply
  • dotdotperiod - Wednesday, June 15, 2005 - link

    Seriously why are you guys concerned about clock speed, as everyone has reported clock speed does not equate to a significant increase in performance. BTW who in the hell needs to run four operating systems at once?? I mean it reallY?? Glad to see intel in finally going to stop making two of the same chipset and giving them different names. I almost fell asleep looking at all the different cpu's seems like the same stuff just a different day. I dont run a multi billion dollar company but Intel should seriously simplify and stop getting there teeth kicked in by AMD. Reply
  • Eug - Tuesday, June 14, 2005 - link

    I'm surprised that so many people are complaining about the 2.16 GHz Yonah when it's dual-core and so low power. It's only about 35 Watts people. Reply

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