Intel On the Offensive: Roadmap Details and Analysis

The Server Side of Things

With the exception of Yonah showing up where Xeon should be, there is very little new for servers.

Dual core is inevitably moving toward servers, and the chip that will spearhead that launch is Dempsey. Dempsey is similar to Smithfield, but at the same time, it offers HyperThreading support, 1066FSB, Demand Based Switching and Vanderpool Technology. Expect Dempsey to show up around Q1'06. The enterprise version of Dempsey, dubbed Paxville, will act as the enterprise large cache version of Dempsey, but at a slower 800MHz front side bus. Expect Paxville at about the same time as Dempsey. Intel makes specific note on the roadmap that the processor brand name for Paxville and Dempsey is TBD - maybe Xeon has had its end?

Intel Single Core Volume Server Lineup LGA775
Chipset	FSB Clock	Cache Size	Launch
Xeon 3.6GHz	667MHz	2MB L2	Q4'05
Xeon 3.4GHz	667MHz	2MB L2	Soon
Xeon 3.2GHz	667MHz	2MB L2	Soon
Xeon 3.0GHz	667MHz	2MB L2	Soon
Xeon 2.8GHz	667MHz	2MB L2	Q3'05

Until dual core shows up on servers, we have to settle for Iriwindale (Prescott 2M) server chipsets. Since Nocona 3.8GHz and 4.0GHz were canceled, there hasn't been much news on the server lineup. All new 3.4GHz and faster Irwindale chipsets will receive support for DBS (Demand Based Switching), but otherwise remain identical in core to their slower alternatives. Potomac and Cranford have all of their SKUs announced until Paxville comes along next year.

Dempsey and Paxville will need a new platform to run on. As in chipsets past, there are two next generation chipisets for server motherboards: Greencreek (the successor to E7535), and Blackford (the successor to E7520 and E7320). Blackford and Blackford VS are the base chipsets supporting dual core server processors. Blackford will support 4 FBD channels, 3 PCIe x8 segments and a total of 64GB of memory. Vanderpool Technology is supported on the motherboard as well as iAMT. Greencreek differs slightly by using two of its PCIe x8 segments for an x16 PCIe graphics slot and a snoop filter. Both chips also support 64bit PCI-X and PCI.

Closing Thoughts

There are clearly some interesting things moving forward inside Intel. The Sossaman project is probably one of our more favorite tidbits - four core Yonah blades would certainly pique our attention. The slightly lower clockspeed has us concerned about whether or not Yonah will really be able to compete with similar offerings from AMD and even Pentium D processors at the same time, but the incredibly low power requirements are enough to impress anyone.

The unified Broadwater family scheduled to replace 945P and 955X a year from now also has our attention. There was some speculation several months ago about Intel unifying their Xeon and Itanium socket design within the next year or so. While the roadmaps certainly don't indicate anything like that, unifying the desktop chipset families first might be a step toward that sort of unification.