Athlon 64 FX

The Athlon 64 FX is an AMD K8 series processor targeted at enthusiasts. For this reason, the processor is left fully multiplier unlocked (both upwards and downwards), enabling the user to change the operating frequency from the default value more easily. It is intended for users of single-processor personal computer systems. The processor implements the x86 and AMD64 instruction sets. It features 1024 KB (1MB) of Level 2 cache, and a dual channel 128-bit memory controller. It is supplied at frequencies from 2.2 GHz to 2.8 GHz. Like the other processors of the K8 series, it features a HyperTransport bus (800 MHz, later 1000 MHz). The FX also comes in two flavors: the 940 pin (a server platform) form, and later in the 939 pin (desktop enthusiast board) form. The Athlon 64 FX comes in three models so far: the FX-51 (2.2GHz), FX-53 (2.4GHz) and FX-55 (2.6GHz). A new model known as FX-57, operating at 2.8 GHz, is supposed to be released after the second quarter of 2005, although this needs to be taken with a grain of salt as AMD is reportedly having issues scaling the processors that fast.

Models

Sledgehammer (130 nm SOI)

• CPU-Stepping: C0, CG
• L1-Cache: 64 + 64 KB (Data + Instructions)
• L2-Cache: 1024 KB, fullspeed
• MMX, Extended 3DNow!, SSE, SSE2, AMD64
• Socket 940, HyperTransport (800 MHz, HT800)
• Registered DDR-SDRAM required
• VCore: 1.50 V
• Power Consumption (TDP): 89 Watt max
• First Release: September 23, 2003
• Clockrate: 2200 MHz (FX-51), 2400 MHz (FX-53)

Clawhammer (130 nm SOI)

• CPU-Stepping: C0, CG
• L1-Cache: 64 + 64 KB (Data + Instructions)
• L2-Cache: 1024 KB, fullspeed
• MMX, Extended 3DNow!, SSE, SSE2, AMD64, Cool'n'Quiet
• Socket 939, HyperTransport (1000 MHz, HT1000)
• VCore: 1.50 V
• Power Consumption (TDP): 89W (FX-53), 104W (FX-55)
• First Release: June 1, 2004
• Clockrate: 2400 MHz (FX-53), 2600 MHz (FX-55)

San Diego (90 nm SOI)

• CPU-Stepping: E4
• L1-Cache: 64 + 64 KB (Data + Instructions)
• L2-Cache: 1024 KB, fullspeed
• MMX, Extended 3DNow!, SSE, SSE2, SSE3, AMD64, Cool'n'Quiet, NX Bit
• Socket 939, HyperTransport (1000 MHz, HT1000)
• VCore: 1.35V/1.40V
• Power Consumption (TDP): ?? Watt max
• First Release: TBA
• Clockrate: 2800 MHz (FX-57) (?)

See also

• List of AMD Athlon 64 microprocessors