Overview of Bulldozer Lineup

AMD’s new Bulldozer-based CPUs are just around the corner. AMD has said the release of Zambezi CPUs will happen in Q3, which means any time from now. The latest word on the street suggests October release though. We know quite a lot about these CPUs already but there is at least one thing we didn't know until now and it may end up being a big thing in server market. AMD’s John Fruehe has published an interesting blog post where he reveals that AMD’s upcoming server CPUs, Operons, will feature a user-configurable TDP. 

AMD Bulldozer lineup
Codename Zambezi Valencia Interlagos
Market High-end consumers Low-end servers High-end servers
Core count 8, 6 or 4 8 or 6 16, 12 or 8
Socket AM3+ C32 G34
Supported CPU configurations Single CPU Up to dual CPU Up to quad CPU

Lets start with a brief on Bulldozer. It’s AMD’s first new micro-architecture since K10 (if we ignore Bobcat), which was released in late 2007, and frankly it’s long overdue. It will be manufactured using GlobalFoundries’ 32nm SOI, just like Llano. Some of the architectural changes are covered here, so lets not get into that.

The regular desktop CPUs are codenamed Zambezi and will feature up to eight cores. They will use the AM3+ socket and some AM3 boards will also support the new Zambezi CPUs after a BIOS update. These CPUs will not feature an integrated GPU (unlike Llano and Ontario/Zacate) and will support up to 1866MHz DDR3 in dual-channel configuration. 

Bulldozer actually gets more interesting when talking about the server parts, Opterons. For low-end and power efficient servers, AMD will offer CPUs codenamed Valencia. Specification wise these CPUs are pretty similar to Zambezi, with 8-core and 6-core variants. The memory support is also dual-channel just like in Zambezi but will be limited to 1600MHz. Valencia will be released under the Opteron 4200 Series brand and will support single- and dual-CPU configurations. It will aslo be compatible with AMD's current San Marino and Adelaide platforms (Opteron 4000 Series) for socket C32.

For high-end servers, AMD’s answer is Interlagos. It will feature up to 16 cores which is achieved by combining two 8-core dies into one package, similar to AMD’s current 12-core Magny Cours. There will also be 12-core and 8-core variants. Interlagos has up to four Hyper-Transport 3.0 links, meaning that quad-CPU configurations are supported. Apparently, there will also be CPUs with only two links, aimed at dual-CPU configurations. Memory support will be quad-channel 1600MHz DDR3, just like Intel’s Sandy Bridge-E (although we don’t know the speed of DDR3 that SB-E supports). Interlagos will be branded as the Opteron 6200 Series and will retain support for Maranello platform (Opteron 6000 Series) which utilizes socket G34.

TDP Power Cap
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  • stmok - Friday, July 15, 2011 - link

    No it doesn't. It expressly says CPU for Komodo. Not APU. Look carefully!

    Even the latest leaked slide (Bit-tech.com source in my thread) refers Komodo as a CPU with "Next-Gen Discrete Graphics" as part of the Corona enthusiast/performance desktop platform for 2012.
  • Kristian Vättö - Friday, July 15, 2011 - link

    I have added a (?) to suggest that it's not certain whether Komodo features an IGP or not.
  • jjj - Friday, July 15, 2011 - link

    I don't see any GPU on the slide TimCh provided (and do read the fine print).Anyway there is only 1 botched slide with GPU and 8 cores and if you think about it, it makes no sense.
    Why have Sepang with 10 and Komodo with 8,it would be a waste of time and money and there would be no reason to have a different name for it,instead of Trinity.Also how big would the chip be with 8 cores and GPU,even if they drop the L2 cache and why add a GPU to a chip adressing the high end where most don't need it (and make the same mistake as Intel using the HD 3000 for K chips).
  • jjj - Friday, July 15, 2011 - link

    edit to prev post: obviously i ment L3
  • rnssr71 - Saturday, July 16, 2011 - link

    'Also how big would the chip be with 8 cores and GPU,even if they drop the L2 cache and why add a GPU to a chip adressing the high end where most don't need it (and make the same mistake as Intel using the HD 3000 for K chips).'

    well, 8 core bulldozer(4 module) is going to be over 300sq. mm. larger than llano(on 32nm) but smaller than thuban(45nm).
    i would guess that 8 meg of L3 cache that the 8 core bulldozer will have would take up 2/3 as much room as the current gpu in llano. so, quite a lot of space.
    so you're right, it would be a mistake to have a full sized gpu......maybe ANY gpu until gpu computing really takes off.
  • Casper42 - Friday, July 15, 2011 - link

    Just an FYI, while it is true that Insight Control is required for power capping a cluster of Rackmount (DL) servers, you get Dynamic Power Capping withing a single c7000 chassis today for free.

    So for Clusters of 16 servers in the same chassis, you don't need IC licenses to see a pretty big benefit. When one server needs more power, the other servers can all be throttled back slightly to let the one burst and still get the workload done, like you mentioned.

    DPC in blade chassis also has 3 different settings.
    One is Average Load for Thermals
    Two is Average Power Draw (80% rule on individual circuits)
    Three is Maximum Power Draw (Do Not Exceed - Circuit protection)
    So you can not only unlock excess capacity with the Max Draw setting being lower than faceplate value, but you can also tune the other values to hit the appropriate thermal values for the DC.

    I've heard there will be an Insight Control powered Multi-chassis DPC coming next year as well. And for those familiar with HP gear, Insight Control licenses, when purchased in 8/16 packs along side a new chassis are only like $50 more per server than iLO Advanced which alot of people already purchase. With normal Enterprise discounts the gap can be even smaller.

    Johan/Kristian - where are you guys located? (roughly)
  • Kristian Vättö - Friday, July 15, 2011 - link

    I'm from Finland (GMT +3 now) but I don't know were Johan lives. FYI, Johan covered the power capping section so you have to wait for him if you think there are any changes necessary.

    I would suggest shooting him an email (click his name on the top) if you want to contact him. Not all of us read the comments, even though we are supposed to :)
  • JohanAnandtech - Friday, July 15, 2011 - link

    I am located in Belgium. You know the land without a government but with the best beer in the world. Paradise thus ;-).

    Thanks for the valuable feedback. Are those 3 settings the only choices you have to tune your power draw?
  • StevoLincolnite - Friday, July 15, 2011 - link

    Spelling error, Johan!
    "It will aslo be compatible with AMD's current San Marino and Adeleide platforms (Opteron 4000 Series) for socket C32."

    It should be Adelaide, not Adeleide. :)

    Other than that, good job.
    Hanging out badly for Zambezi's release, my rig is ready to drop a new 8-core chip into it. :)
  • Kristian Vättö - Friday, July 15, 2011 - link

    Actually, I wrote that part. I have fixed it now along with a few other minor edits. I added that the latest word appears to be October release (just saw it in my RSS today) and I also added a (?) to the Komodo's IGP as it seems to be uncertain.

    Thanks for the feedback :)

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