How does HTT technology works

[ImageRoc]

I would like read some info on HTT and compare it to traditional FSB, So if anybody has any links or info it would be greatly appreciated

 

[imported_Kensai]

You can't compare HTT to FSB since A64s don't have an FSB.

 

[hippotautamus]

HTT serves the exact same function, it just goes about it a different way...and I don't know any good guides, I fear.

 

[CheesePoofs]

Correct me if I'm wrong, but I believe FSB is traditionally the connection between the processor and the memory controller, which is normally located on the north bridge. Athlon 64's have their memory controller on the chip, so there is no need for a FSB. Instead, they have the HTT, which on an A64 system links the CPU to the north bridge. On an Opteron system, however, the HTT links also serve to connect the CPU's directly to each other.

 

[ImageRoc]

Originally posted by: CheesePoofs
Correct me if I'm wrong, but I believe FSB is traditionally the connection between the processor and the memory controller, which is normally located on the north bridge. Athlon 64's have their memory controller on the chip, so there is no need for a FSB. Instead, they have the HTT, which on an A64 system links the CPU to the north bridge. On an Opteron system, however, the HTT links also serve to connect the CPU's directly to each other.

Yeah that seems right, See I was just reading how FSb works with the cpu using the Address bus to ask the Ram for bytes of data then the RAM using the FSB to send the Data to the cpu which then the FSB gets multiplied within the cpu to get your current CPU speed.
After reading this over I started to wonder just how Amd64 Htt works? since the memory controller was on the CPU and why Amd64 still Needs a north bridge if the memory controller is located on the CPU?Also how the speed of the htt is rated at 2000? I started thinking of all kinds of quesitons, So being knowledge hungry Thats Why I posted the question

 

[CheesePoofs]

You still need a northbridge because the northbridge is not only the memory controller, it also is the link to the graphics card, hard drives, cd drives, and any other fast device on the system. The speed of 2000 comes from the 200mhz HTT speed * 5x LTD = 1000 * 2 (its a dual data rate link) = 2000mhz for your hypertransport, effectively.

 

[imported_Kensai]

The chip(set) controls your I/O, (mouse, HD, optical, keyboard, USB, firewire, etc.) or addresses the components which control them, (promise / silicon image controlers, etc.) and of course your graphics and add-on cards.

 

[Duvie]

The world?s first 32-bit and 64-bit processor compatible with the x86 architecture, the AMD Opteron processor is based on AMD64 technology with Direct Connect Architecture. Direct Connect Architecture helps eliminate the bottlenecks inherent in a front-side bus by directly connecting the processors, the memory controller and the I/O to the central processor unit to enable improved overall system performance and efficiency. AMD was the first to announce the completion of an x86-based dual-core processor design and the first to demonstrate an x86-based dual-core processor for 32? and 64-bit computing. As more solution providers join the AMD64 ecosystem, the industry is approaching the day when 32-bit-only systems will become obsolete.

http://www.hypertransport.org/tech/index.cfm
http://www.ukgamer.com/article.php4?id=143&page=1

* HyperTransport technology is a high-speed, low latency, point-to-point link designed to increase the communication speed between integrated circuits in computers, servers, embedded systems, and networking and telecommunications equipment up to 48 times faster than some existing technologies.
* HyperTransport technology helps reduce the number of buses in a system, which can reduce system bottlenecks and enable today's faster microprocessors to use system memory more efficiently in high-end multiprocessor systems.
* HyperTransport technology is designed to:
o Provide significantly more bandwidth than current technologies
o Use low-latency responses and low pin counts
o Maintain compatibility with legacy PC buses while being extensible to new SNA (Systems Network Architecture) buses.
o Appear transparent to operating systems and offer little impact on peripheral drivers.
* HyperTransport technology was invented at AMD with contributions from industry partners and is managed and licensed by the HyperTransport Technology Consortium, a Texas non-profit corporation. The full specification and more information about HyperTransport technology can be found at HyperTransport.org.

HyperTransport is a licensed trademark of the HyperTransport Technology Consortium.


Bonus http://the-inquirer.net/?article=1685http://the-inquirer.net/?article=1685

read How Intel wants to copy this as well...

Intel chips will soon be known as AMD clones....

 

[Icopoli]

AMD's version of the FSB.

Make it higher and your computer goes faster and hotter.

 

[dmens]

Originally posted by: Duvie
Intel chips will soon be known as AMD clones....

Similarly, all AMD chips are P6 clones.