Faster Hypertansport bus

SiS debutted their 755FX chipset designed for the new 939-pin A64FX next
year. Among the things revealed is SiS is planning to incorporate a 1000Mhz
Hypertransport bus in it, up from the current 800Mhz.

http://www.xbitlabs.com/news/chipsets/display/20031113152821.html

Now since the memory controller is outside the Hypertransport bus, it
doesn't make a lot of sense to increase the speed of Hypertransport just for
peripheral i/o throughput; Hypertransport as it now stands is more than
adequate. However, it might make some sense to increase the Hypertransport
bus speed if there is some sense that a new memory standard (DDR2?) is
coming down the line, and they want to access this memory through an
external memory controller attached to the Hypertransport. During the
transition period between old memory standard the new one, you'd need a
controller mechanism for the new memory type, since it's likely that the
Athlon itself would only have support for the older one initially. Just an
idea.

Yousuf Khan

On Fri, 14 Nov 2003 00:02:42 GMT, "Yousuf Khan"
<removethisspam.bjsk90.removethispam RemoveThis @hotmail.com> wrote:

 >SiS debutted their 755FX chipset designed for the new 939-pin A64FX next
 >year. Among the things revealed is SiS is planning to incorporate a 1000Mhz
 >Hypertransport bus in it, up from the current 800Mhz.
 >
 >http://www.xbitlabs.com/news/chipsets/display/20031113152821.html
 >
 >Now since the memory controller is outside the Hypertransport bus, it
 >doesn't make a lot of sense to increase the speed of Hypertransport just for
 >peripheral i/o throughput; Hypertransport as it now stands is more than
 >adequate. However, it might make some sense to increase the Hypertransport
 >bus speed if there is some sense that a new memory standard (DDR2?) is
 >coming down the line, and they want to access this memory through an
 >external memory controller attached to the Hypertransport. During the
 >transition period between old memory standard the new one, you'd need a
 >controller mechanism for the new memory type, since it's likely that the
 >Athlon itself would only have support for the older one initially. Just an
 >idea.
 >
 > Yousuf Khan
 >

I might be missing a turn of words, but...

"Sense"? We're *way* beyond "sense".

DDR2-400 is a reality, already in demo boards, and coming to a computer near
you soon, with DDR2-500 and beyond in the pipeline.
DDR1 is dead, say your goodbyes soon.

Multi-gigahertz chip and adapter interconnects are already extant in customer
demonstration boards. It's called PCI Express, it is now being operated at
2.5ghz, and you can bundle a bunch of links to dial up prodigious bandwidth.

Gigahertz front side buses should appear within the next 6 months as well...

/daytripper (moving too fast to stop <!-- ~MESSAGE_AFTER~ -->