AMD Tri-core Processor Details for 2008 and 2009
December 4, 2007 2:56 AM
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AMD has something for everyone with its new tri-core processors, but quite a lot is still marked "tentative"
AMD picked up big headlines
the day before Intel's Fall Developer Forum
with the announcement of its upcoming tri-core processors.
AMD's original release did not specify if this tri-core processor, code named
, would be a totally new processor or merely a stripped-down version of
. The answer, it appears, is both.
In an embargoed corporate roadmap forwarded to
, details of these new triple-core oddities came to light.
The first triple-core processor,
, is essentially a core-disabled version of the
quad-core processor. It includes a full
package, including the 2MB of shared L3 cache, with one core disabled.
, which will eventually herald the AMD Phenom 8000-product name, is scheduled to launch in February 2008 with mass availability in March. AMD representatives, speaking on conditions of anonymity, confirmed the initial 2.4 GHz Phenom 8700 and 2.3 GHz Phenom 8600 tri-core processors will launch with a 95W thermal envelope.
In late 2008, AMD will shift almost all of its 65nm quad-core offerings to 45nm. AMD will then follow up these initial quad-core offerings with 45nm dual-core and triple-core processors in 2009.
The first of these 45nm tri-core processors, codenamed
, will launch with DDR2 and DDR3 support. However, AMD guidance also details that
will ship with two different varieties: one with a shared L3 cache, another without. All 45nm quad-core AMD processors incorporate shared L3 cache, with
the exception of the
AMD guidance goes on to state that all mainstream Phenom quad-core processors, both with shared L3 cache (
) and without (
), shipped in 2009 will feature DDR3 exclusively.
, on the other hand, will feature a mix of DDR2 and DDR3 support.
Unfortunately the answers for tri-core only raise further questions. While
has a unique codename, it seems to be a combination of cut-down
quad-core processors. The logical conclusion would be that
is merely excess or defective
processors from the 2008 launch.
Yet AMD's roadmap goes on to detail one more chip:
which has always been described by AMD as a dual-core version of
, will make its debut with variable shared L3 cache and a mix of DDR2 and DDR3 support. Could it be that
is a core-disabled version of
, which is already likely a core-disabled version of
One AMD representative declined to comment on these 45nm processors, stating that 2009 processor launches and specifications are still "tentitive."
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RE: Oh boy...
12/4/2007 10:59:13 AM
Yeah, thats why I think AMD should sell the Tricores at dual core prices, not try to find and "in between" price and make that price competitive with Intels dual core offerings.
This way while the chip might be ~10% slower than an equivalent priced Intel dual core the extra core will give them the advatage in multitasking and programs that scale well with multiple proccessors. Then AMD can say "Intel gives you two cores, we're giving you 3 for the price of two!" It would make good marketing sense.
Since they are pushing these Tricores they should just abandon dual cores all together. Then they can devote those fabs making dual cores to quadcore manufacturing and use the quads with only 3 functioning cores for their tricore series.
Intel manufactures only dual cores and puts two together to make its quad core. This adds to their huge manufacturing advantage.
AMD has to manufacture two lines, dual and quad. Coupled with their comparitively small manufacturing capability, poor yields, and the fact that they are behind on the move to 45nm proccess it woulld make sense to just move to one line.
If the L3 cache is hurting clock speed I say first how much of a performance difference is there between an L3 equipped and a no L3 equiped proccessor. If the difference is negligible I say good riddance. Get rid of it shrink the die and ramp up the clock speed to make it competitive. Plus shrinking the die means more procs per platter, and that means cheaper procs.
"Spreading the rumors, it's very easy because the people who write about Apple want that story, and you can claim its credible because you spoke to someone at Apple." -- Investment guru Jim Cramer
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