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HyperTransport 3.0 Arrives!

post #1 of 19
Thread Starter 
http://www.hypertransport.org/news/p...ss_Release.pdf


Quote:
Sunnyvale, Calif., April 24, 2006 -- HyperTransportTM Technology Consortium, a standards
organization dedicated to developing the industry's lowest latency, highest bandwidth
interconnect technology, today released version 3.0 of the HyperTransport specification. The new
standard nearly doubles the bandwidth and speed of the previous HyperTransport 2.0
specification. In addition, HyperTransport 3.0 supports a variety of new features including AC
coupling mode, hot plugging, un-ganging mode and dynamic power management for the support
of extended signal transmission distance, typical of backplane and chassis-to-chassis
implementations. HyperTransport 3.0 builds on the existing HyperTransport 1.0 and 2.0
standards which continue to be designed into end systems at an accelerating rate, and have
helped HyperTransport reach considerable market presence and success. HyperTransport 3.0 is
fully backwards-compatible with earlier versions of the HyperTransport specification standard.
"The added performance and new features of HyperTransport 3.0 extend the applicability of
HyperTransport technology from chip-to-chip and board-to-board, all the way to chassis-tochassis applications," said Mario Cavalli, general manager of the HyperTransport Technology Consortium. "HyperTransport has proven to be the industry's most flexible, powerful and futureready standard interconnect solution for compute-intensive system designs, delivering a winning combination of high-performance, standardization and optimized total cost of ownership (TCO) for data center and supercomputing applications."
Technical Features and Benefits of HyperTransport 3.0

Quote:
AC mode (Optional) - An innovative AC interconnect mode complements HyperTransport's
traditional DC mode, featuring capacitor coupling, AC/DC auto-sensing and auto-configuring
capabilities. The feature extends HyperTransport's maximum signal transmission distance to
1 meter at maximum specified clock speed with no signal transmission or performance
degradation. As a result, the HyperTransport standard can now support long-haul signal
transmission typical of backplane and chassis-to-chassis applications. During power-up and
in total transparency to system software, HyperTransport 3.0 auto-senses the presence of
coupling capacitors (AC) and/or direct connections (DC) within the HyperTransport
interconnect fabric and automatically configures each portion of it accordingly.
Quote:
Hot plugging - HyperTransport technology-enabled devices can be added to or removed
from the HyperTransport fabric without disrupting system operations. HyperTransport cards,
systems and subsystems can therefore be deployed in backplane and any mission-critical
platforms requiring high system availability
Quote:
Un-ganging mode (Optional) - During system power-up and transparently to system
software, 1x16 HyperTransport links can optionally be configured as 2x8 virtual links. This
gives system architects extended interconnect flexibility and the ability to fully leverage
existing HyperTransport components and cores. Un-ganging mode is particularly valuable in
multiprocessor and symmetric multiprocessing environments
.

Quote:
Power Management Mode - HyperTransport 3.0 carries dynamic, auto-sensing, hardwarebased, self-configuring power management capabilities that give end products the
intelligence to best optimize the power consumption of each of their HyperTransport
components and modules in real-time and transparently to operating system (OS) and
application software.
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post #2 of 19
Nice find
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post #3 of 19
...Why are they working on a new spec if the HT bus on ALL AMDs has not been saturated yet? This seems a bit weird, why not release it when the bus has reached its ceiling?
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post #4 of 19
AMD isn't the only one that uses HyperTransport.
:|
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post #5 of 19
Is there anything out there that fully saturates the bus? I don't know, so I'm asking if there is anything out there.
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post #6 of 19
Thats really cool, the whole HTT is pretty cool, but doubling the bandwidth!
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post #7 of 19
They're doing it...so they don't have to do it later! lol...obvs they're gonna want tonnes of bandwidth for quad cores and such...
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post #8 of 19
Quote:
Originally Posted by Burn
Is there anything out there that fully saturates the bus? I don't know, so I'm asking if there is anything out there.
Nothing at the moment afaik.
:|
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post #9 of 19
Quote:
Originally Posted by Burn
...Why are they working on a new spec if the HT bus on ALL AMDs has not been saturated yet? This seems a bit weird, why not release it when the bus has reached its ceiling?
It's like the move to PCI-E from AGP I guess, a good way to get us to upgrade.
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post #10 of 19
gotta love progress. quad cpus are not farm from here, 2007, you guys will see, it will go by very fast... okay, time to order my second stick of 1gb pc3200
peace!
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