Intel en chipset partner ServerWorks hebben het Intel Developer Forum aangrepen als gelegenheid om twee concurrerende server chipsets aan te kondigen. In het ServerWorks kamp werden de specs onthuld van de indrukwekkende 2-way en 4-way Grand Champion Xeon Foster chipset, die in het derde kwartaal van dit jaar in productie gaat. Grand Champion is de eerste ServerWorks chipset met DDR support. Dankzij het gebruik van van een 256-bit brede geheugenbus heeft deze chipset een geheugen bandbreedte van 6,4GB/s bij gebruik van PC1600 DDR SDRAM. Het ontwerp ondersteunt maximaal 16 registered PC1600 DIMMs met een capaciteit van 128MB tot 2GB. Om de grootst mogelijk stabiliteit te bieden, heeft de chipset een 128-bit ECC algoritme en wordt erg gebruik gemaakt van ServerWorks' Enterprise Chipkill technologie. De moederplank kan dankzij deze feature zelfs bij een dode DRAM chip probleemloos en zonder verlies van gegevens in werking blijven. Verder is er support voor memory mirroring en hot plugging zodat een machine zonder onderbreking van extra geheugen reepjes voorzien kan worden.
Ook op het gebied van I/O bandbreedte levert ServerWorks indrukwekkende stijve-plasser specificaties. Terwijl veel simpele desktop chipsets slechts één 32-bit, 33MHz PCI bus kennen, heeft de Grand Champion maar liefst drie dual 64-bit, 100MHz dual PCI-X controllers die elk zijn voorzien in een eigen full duplex link van 1,6GB/s met de northbridge. De totale I/O bandbreedte komt hiermee op 4,8GB/s. De PCI-X controllers hebben evenals de memory controller ondersteuning voor hot plugging. Al met al kun je concluderen dat ServerWorks stevig zijn best heeft gedaan :
Santa Clara, Calif. - February 27, 2001 - Broadcom's (Nasdaq: BRCM) ServerWorks subsidiary, the leading independent supplier of high-performance SystemI/O™ integrated circuits for servers, today unveiled details of its Grand Champion™ HE architecture for Intelâ-based multiprocessor platforms. ServerWorks' Grand Champion HE architecture delivers an unprecedented 6.4 Gigabytes per second of memory bandwidth and up to 5 GBytes/second of I/O throughput, supporting a maximum of six independent PCI-X bus segments and one traditional 32-bit PCI bus.
This is ServerWorks' highest performing SystemI/O architecture to date, and it will support 2-way and 4-way implementations of future Intel Xeon™ processors for servers, storage and networking appliance platforms. Further, the Grand Champion HE is the industry's first platform to provide host PCI-X support.
New Architecture Enables 6.4 GBytes/second Memory Bandwidth
The Grand Champion HE's 6.4 GBytes/second memory bandwidth represents a factor of four improvement over the 1.6 GBytes/second bandwidth delivered by ServerWorks' previous high-end ServerSet™ III HE. To achieve this dramatic gain, ServerWorks deploys banks of next-generation DDR memory operating in a four-way interleaved configuration. The design accommodates up to sixteen registered PC1600 DIMMs with capacities of 128 Megabytes through two Gigabytes each, for a system maximum of 32 Gigabytes, four times more than the earlier ServerSet III HE design. The design includes a sophisticated 128-bit ECC algorithm that enhances system reliability by correcting quad-bit errors and detecting eight-bit errors. The ECC algorithm also supports ServerWorks' Enterprise ChipkillTM Technology that maintains system data integrity, even in the event of the failure of an entire DRAM chip within the memory array. The design also supports a memory-scrubbing feature that detects errors before they can impact system operation; memory mirroring for extra robust operation; and hot plug memory that allows memory upgrades while the system continues in operation. The Grand Champion HE platform's combination of high memory bandwidth and high Reliability/Availability/Serviceability (RAS) allows Intel based servers to be used in applications previously served only by more expensive systems based on proprietary architectures.
Grand Champion HE Supports PCI-X, for 5 GBytes/second I/O Throughput
The Grand Champion HE's 5 GBytes/second I/O bandwidth delivers a factor of five improvement over the one GByte/second capacity of the earlier ServerSet III HE, and a factor of thirty-seven improvement over the bandwidth offered by desktop solutions that support only one 32-bit PCI bus. Because not all systems require as much I/O capacity as the Grand Champion HE delivers in its maximum configuration, ServerWorks chose a modular scheme that allows system designers to add 64-bit/100 MHz PCI-X channels in groups of two. Each dual channel PCI-X controller has its own dedicated 1.6 GBytes/second full duplex connection to the North Bridge to accommodate the peak traffic generated by the PCI-X buses it controls. These PCI-X controllers support hot plug PCI operation for maximum operational flexibility. The Grand Champion's North Bridge handles all cache coherency issues, and allows devices attached to any PCI-X or PCI bus to initiate peer-to-peer transactions with any other device on any other bus in the system.
[...] The Grand Champion HE chipset, supporting 2-way or 4-way server implementations, includes a North Bridge (Part # NB7410), a South Bridge (Part # SB7440), five memory controller interface chips (Part # NB7430) and one to three Dual-Channel PCI?X controllers (Part # IB7420). The Grand Champion HE chipset is currently scheduled for production in the third quarter of 2001.