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ROCKY-6614 CPU Card
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2.3 Onboard Chipsets
2.3.1 Northbridge and Southbridge Chipsets
The following chipsets are preinstalled on the board:

Northbridge: SiS661CX
 Southbridge: SiS964
The following two sections (Section 2.3.2 and Section 2.3.3) list some of the features of
the SiS661CX and the SiS964 chipsets. For more information on these two chipsets please
refer to the SiS website.
2.3.2 SiS661CX Northbridge Chipset
The SiS661CX northbridge chipset comes with the following features:

Host Interface
o Intel
®
Pentium
®
4 Hyper-Threading processor support
o FSB 800MHz w/ 2X Address and 4X Data Rate
o 12 Outstanding Transactions support
o Quasi-Synchronous/Asynchronous Host/DRAM Timing support
o Supports 2M/4M/8M/16M TSEG SMRAM
o Supports Dynamic Bus Inversion.

DRAM Controller
o DDR400/DDR333/DDR266 supported
o Up to two un-buffered DIMMs DDR400 supported
o Up to 1GB per DIMM with 512Mb tech.
o Dynamic Clock Enable (CKE) control placing the Memory into
Suspend to DRAM state.
 SiS MuTIOL® 1G Delivering 1GB/s Bandwidth
o Proprietary Interconnect between Northbridge and Southbridge
o Bi-Directional 16 bit Data Bus at 800MHz Operating Frequency
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