Third-Generation AMD Opteron™ Processor Server Competitive Comparison

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System Comparison Quad-Core (45nm) AMD Opteron™ Processors Quad-Core Intel Xeon processor 5400 Series1 Six-Core Intel Xeon MP 7400 Series2, 3

Modular, glueless scalability Yes Requires Northbridge Requires Northbridge SMP Capabilities Up to 8 Sockets/32 Cores Up to 2 Sockets/8 Cores Up to 4 Sockets/24 Cores Direct Connect Architecture Yes No, uses Front-Side Bus No, uses Front-Side Bus Native Mulit-Core Technololgy Yes No Yes High-Performance 32-bit and 64-bit computing AMD64 EM64T EM64T HyperTransport™ technology Yes No No Integrated DDR2 memory controller Yes No No Hardware-Assisted Virtualization AMD-V™ with Rapid Virtualization Indexing Intel VT intel VT

Memory support RDDR2 400/533/667/800 FBDIMM 533/667/800 FBDIMM 533/667 Maximum Memory Bandwidth 2P System 25.6GB/s† 25.6GB/s N/A Maximum I/O bandwidth with 2P System 16.0GB/s † 14GB/s N/A Maximum Total bandwidth with 2P System 41.6GB/s† 25.6GB/s N/A Maximum Memory Bandwidth 4P System 51.2GB/s †† N/A 32GB/s Maximum I/O bandwidth with 4P System 32.0GB/s †† N/A 6GB/s Maximum Total Bandwidth 4P System 83.2GB/s †† N/A 34GB/s Maximum Graphics Support Dual PCIe® x16 PCIe® x16 PCIe® x16

L1 cache size (max) 64KB (Data) + 64KB (Instruction) per core 32KB (Data) + 32KB (Instruction) per core 32KB (Data) + 32KB (Instruction) per core L2 cache size (max) 512KB per core 6MB (shared) x 2 6-9MB (3MB per 2 cores) L3 cache size (max) 6MB (shared) N/A 6-9MB (shared, inclusive) SIMD Instruction Set Support SSE, SSE2, SSE3, SSE4A SSE, SSE2, SSE3, SSE4.1 SSE2, SSE3, SSE4.1

†	AMD 2P System – AMD Opteron™ 2300 Series processor with 1 HyperTransport™ technology bus and 2 HyperTransport™ technology I/O Buses with DDR2-800 memory
††	AMD 4P System – AMD Opteron 8300 Series processor with 4 HyperTransport™ technology Inter-processor Buses and 4 HyperTransport™ technology I/O Buses with DDR2-800 memory
1	With Intel 5400 chipset
2	With Intel 7300 and 7200 Chipset
3	Other OEM chipsets support additional capabilities