Athlon K75 550

Table 7-12: Athlon K75 550 Specifications
Processor Family	Model Name	AMD Athlon K75

	Performance Rating	550 MHz
	Front-side Bus Speed	100 MHz (200 DDR)
	Multiplier Ratio	5.5x
Physical Design	Interface Packing	242-Pin Slot A Cartridge
	Core Die Size	.18 micron, 102 mm
	Transistor Count	22 Million
	Voltage Interface	Split Core and I/O
	Core Voltage	1.6 volts
	Power Consumption	28 watts
	Maximum Power	31 watts

Table 7-13: Athlon K75 550 Overclocking
Athlon K75	Model Rating	550 MHz

Overclocking Potential	Multiplier Lock Support	Unlocked Multiplier via
		External GFD
	Typical Multiplier O/C	6.5x – 7.5+x
	Typical Front-side Bus O/C	103 – 108+ MHz
	Typical O/C Potential	650 – 750 MHz
	Maximum O/C Potential	750 – 800 MHz
Overclocking Tolerances	Recommended Cooling Type	Forced-Air Heatsink
	Recommended Heatsink Coolers	GlobalWin VOS-32
		Alpha P7125
	Recommended Peltier Active Cooler	Swifttech MC1501
	Maximum Core Voltage	1.85 volts with Heatsink Cooler
	Maximum Core Temperature	70° Celsius

Strategy

The Athlon K75 550 fairs better than its original K7 counterpart. The newly redesigned .18-micron core requires less than 60% of the wattage demanded by the .25-micron design. Overclocking potential is similarly affected, with potential returns up to 800 MHz for the best chips. Note that the K75 retains a relatively low 70°Celsius maximum core temperature; thus cooling remains an important concern. The factory heatsink should prove adequate for an additional 50 to 100 MHz, but will fail to provide the cooling needed for stability at higher overclocking ranges.