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Hp Integity chip sets (sx1000 & zx1)

 
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Hp Integity chip sets (sx1000 & zx1)

What is the difference between sx1000 & zx1?
2 REPLIES 2
rick jones
Honored Contributor
Solution

Re: Hp Integity chip sets (sx1000 & zx1)

The sx1000 chipset is designed for systems up to 64 sockets (ie up to 128 CPU with today's offerings) - aka "big iron" where the zx1 chipset was designed for systems up to four sockets.
there is no rest for the wicked yet the virtuous have no pillows
Ted Buis
Honored Contributor

Re: Hp Integity chip sets (sx1000 & zx1)

To elaborate on Rick's accurate comments, the zx1 has one Itanium 2 bus for the 4 processor sockets, while the sx1000 has two Itanium 2 busess for the 4 processor sockets. The sx1000 also supports greater bandwidth to memory than does the zx1, as well as a bus that can go to a crossbar and interconnect with other sx1000 chipsets. Both support I/O but differently, as the sx1000 is designed to have the I/O stretch to longer distances from the chip, which is needed for Superdome to support 192 I/O card slots. The big advantage of the zx1 chipset is that it has lower latency to memory, so the smaller configurations can run as fast as is possible. Think of the zx1 as a sports car, and the sx1000 as an SUV. The SUV hauls more of a load, but the sports car can win the quarter mile acceleration race.
Mom 6