Socket 939 was introduced by AMD as an answer to Intel's new platform for desktop products, Socket LGA775. Socket 939 has been succeeded by Socket AM2.

Socket 939 CPUs: Key Features

• 32-bit performance, full IA-32 (x86) compatibility and support for future 64-bit applications using the AMD64 instruction set extensions
• 40-bit physical addresses, 48-bit virtual addresses
• Eight new 64-bit integer registers, for a total of sixteen
• Eight new 128-bit SSE/SSE2 registers, also for a total of sixteen
• Includes support for 3DNow technology and SSE2, and SSE3 when using more recent (revision E) processors
• Integrated dual channel DDR SDRAM controller supporting up to 200MHz PC3200 ("DDR400")
• Up to 6.4 GB/s memory bandwidth
• HyperTransport technology for high speed I/O communication, one 16 bit link up to 2000MHz
• 64KB Level 1 instruction cache, 64KB Level 1 data cache
• Up to 1MB Level 2 cache
• Certain models (Athlon 64 X2) are dual-core processors and have two physical CPU cores on one processor die.

Various Socket 939 Cores

• Clawhammer Core: L2 1MB Cache/ SSE1, SSE2 Instruction Support
• Newcastle Core: L2 512KB Cache/ SSE1, SSE2 Instruction Support
• Winchester Core: L2 512KB Cache/ SSE1, SSE2 Instruction Support
• Venice Core: L2 512KB Cache/ SSE1, SSE2, SSE3 Instruction Support
• San Diego Core: L2 1MB Cache/ SSE1, SSE2, SSE3 Instruction Support
• Manchester Core: (Single & Dual Core) L2 512KB cache per CPU/ SSE1, SSE2, SSE3 Instruction Support
• Toledo Core: (Dual Core) L2 1MB cache per CPU/ SSE1, SSE2, SSE3 Instruction Support
• Venice Core CPUs include: 3000+, 3200+, 3500+, 3800+ (Retail)
• San Diego Core CPUs include: 3700+, 4000+, FX55, FX57 (Retail)
• Manchester Core CPUs include: X2 3800+, X2 4200+, X2 4600+ (Retail)
• Toledo Core CPUs include: X2 3800+ (with half of the 1MB L2 disabled), X2 4400+, X2 4800+, FX-60 (retail)

Additional information

• AMD Product Information
• AMD Technical Details for Athlon64 and Athlon FX
• Introduction to DDR RAM
• Socket 939 Motherboard Roundup #1
• Socket 939 Motherboard Roundup #2
• Socket 939 Preview & Analysis
• List of all available Socket 939 motherboards and of extensive list of shootouts

CPU sockets

Sockel 939 | Socket 939 | Socket 939 | Socket 939 | Socket 939 | Socket 939