Athlon Thunderbird 850

Table 7-41: Athlon Thunderbird 850 Specifications
Processor Family	Model Name	AMD Athlon Thunderbird

	Performance Rating	850 MHz
	Front-side Bus Speed	100 MHz (200 DDR)
	Multiplier Ratio	8.5x
Physical Design	Interface Packing	462-Pin Socket A
		242-Pin Slot A Cartridge
	Core Die Size	.18 micron, 120 mm
	Transistor Count	37 Million
	Voltage Interface	Split Core and I/O
	Core Voltage	Socket A = 1.75 volts
		Slot A = 1.6 volts
	Power Consumption	40.2 watts
	Maximum Power	44.8 watts

Table 7-42: Athlon Thunderbird 850 Overclocking
Athlon Thunderbird	Model Rating	850 MHz

Overclocking Potential	Multiplier Lock Support	Unlocked Multiplier
	Typical Multiplier O/C	9.0x – 10.0x
	Typical Front-side Bus O/C	103 – 115+ MHz
	Typical O/C Potential	900 – 1000 MHz
	Maximum O/C Potential	1000+ MHz
Overclocking Tolerances	Recommended Cooling Type	Forced-Air Heatsink
	Recommended Heatsink Coolers	Thermalright SK-6
		Alpha PAL-8045
		TaiSol CGK742092
		GlobalWin VOS-32
		Alpha P7125
	Recommended Peltier Active Cooler	Swifttech MCX370
		Swifttech MC1501
	Maximum Core Voltage	1.85 volts with Heatsink Cooler
	Maximum Core Temperature	Socket A = 90° Celsius
		Slot A = 70° Celsius

Strategy

The Athlon Thunderbird 850-MHz processor provides a good chance of reaching one gigahertz with little more than the use of a good heatsink cooler. As expected, the Socket-A version offers the best overclocking potential. For comparison, the Slot-A version should be capable of reaching 950 MHz, often cooled with the factory-installed heatsink.