According to reports, AMD’s six-core Istanbul server processor is set to be unveiled this upcoming Tuesday.
The chip is slated for its official unveiling at the Computex conference on June 2nd. It is meant to rival Intel’s Dunnington processor, and will sport 6MB of L3 cache to share amongst the cores. Each core will also have 512 KB of L2 cache per, and will presumably feature DDR3 support (depending on the socket).
According to the chip’s lead architect, Hans de Vries, AMD will be pitting two of these against one of Intel’s offering, thanks to the size of the chip. The Istanbul chip is reported to only take up 300 square millimeters, while the Dunnington is expected to take up 700 square millimeters.
In case you missed it, Intel earlier this week officially released its Dunnington-based 7400 server CPUs. Dunnington has garnered attention in the press for being a six-core processor, and also for being the first Intel chip to sport a monolithic design, meaning all six cores come on a single die. Dunnington's predecessor, the 7300 series Tigerton, was a quad-core processor two dual-core chips wedged onto a single slice of silicon.
But Dunnington is no big deal, according to AMD. Jon Fruehe, worldwide market development manager for the rival chip maker, dubbed Dunnington as nothing more than a "benchmark chip" and a "placeholder" until Intel can move away from an external memory controller.
Fruehe also huffed at Intel having the first six-core CPU, saying it's just a glued together triple-dual core processor with 50 percent more cores than the quad-core and costing 50 percent more, but only offering 30 percent more performance. He also pooh-poohed the 130W TDP rating (early reports indicate first run Core i7 processors will also be rated at 130W), and downplayed Tigerton's success, saying market share gains can be attributed to AMD being late with Barcelona.
Is Fruehe's criticism of Intel's Dunnington architecture valid, or did someone just take a whiz in his Wheaties?
Intel today announced the official release of their Dunnington-based Xeon 7400 server CPU. The six-core chip is monolithic, meaning that all six cores are on one die, and is the first Xeon CPU to sport that design. The previous 7300 series CPU, dubbed Tigerton, was a quad-core processor with two dual-core chips on a single module (like existing quad-core consumer chips). As expected, Dunnington is still of the Penryn architecture (45nm High-K manufacturing process), and will be compatible with current Tigerton Socket 604 motherboards.
Speed-wise, Intel claims a 50% performance increase in the 7400 over the 7300 series CPU based on TPC-E database benchmark testing (TPC-E simulates the online transaction workload of a large brokerage firm). More impressive is Intel’s claim that even with the improved performance, Dunnington’s energy efficiency actually means it uses 10% lower power than the previous generation. The gains are largely attributed to the presence of a new 16MB level-3 cache, in addition to the extra compute power of two more cores. Xeon 7400 CPUs will launch at 2.66Ghz with either four or six core, and will be priced from $856 to $2729.
What does this mean for consumers? Unfortunately, not much. Intel has no current plans to release a six-core CPU to the mainstream market, and few applications would be able to scale well enough to take full advantage of the additional two cores. Intel seems to be pushing Nehalem for the consumer market, which will launch as a quad-core. Dunnington customers – large Web 2.0 companies like Myspace – will be the ones who benefit most from the extra performance and power efficiency, which may enable them to develop compute-intensive features like high-definition video sharing.
More pics of the sizable chip and Intel's press conference after the jump.
There's no official word yet, but there's speculation that Intel might release it's six-core Dunnington chips next week at VMWare's VMWorld conference in Las Vegas. Dunnington isn't being aimed at the desktop crowd and will instead target the server market, so if Intel was looking to make a splash with its new CPUs before Nehalem debuts, VMWorld would be the place to do it.
For those that missed our coverage earlier this month, Intel's Xeon 7400 series Dunnington processor will not only be the first six-core CPU, but also the first Intel chip to sport a monolithic design, meaning all six cores will come on one slice of silicon. Current generation chips feature multiple cores in one package. Despite being monolithic in nature, Dunnington will still use an external memory controller, which Intel hopes to offset with a generous amount of cache. The six cores will share a beefy 16MB of L3 cache, and 3MB of L2 cache (9MB total).
On September 15th, Intel is expected to unveil its Xeon 7400 series Dunnington processor. What makes the server chip so special is it will be the first six-core processor, and likely the last Penryn to make a debut before the Nehalem microarchitecture takes over starting with the Core i7.
In another first, Dunnington will be the first Intel chip to sport a monolithic design, meaning all six cores will come on one slice of silicon. By contrast, the Core 2 Quad and four-core Xeon processors to date integrate two dual-core chips in a single package.
In addition to having six cores, the server market hopes to get big performance gains from the large 16MB of shared L3 cache. According to Intel senior vice president Pat Gelsinger, Sun Microsystems, Hewlett-Packard, and Dell will have product announcements related to the Xeon 7400 series in September.