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850 Common Jumpers - AMD

K5
CPU Speed (MHz) Bus Speed (MHz)
& Multiplier		 Multiplier I/O Voltage* Core Voltage Bus Speed Linear Mode PCI/ CPU Bus Synchronization
PR-75 50 x 1.5 JP1
JP2
JP3		 Off
Off
Off		 JP5
JP6		 1-2
1-2		 JP8
JP9
JP10
JP11		 Closed
Closed
Closed
Closed		 JP14
JP15
JP16		 On
On
On		 JP17 Open JP18 2-3
PR-90 60 x 1.5 JP1
JP2
JP3		 Off
Off
Off		 JP5
JP6		 1-2
1-2		 JP8
JP9
JP10
JP11		 Closed
Closed
Closed
Closed		 JP14
JP15
JP16		 Off
On
On		 JP17 Open JP18 2-3
PR-100 66 x 1.5 JP1
JP2
JP3		 Off
Off
Off		 JP5
JP6		 1-2
1-2		 JP8
JP9
JP10
JP11		 Closed
Closed
Closed
Closed		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
PR-120 60 x 2 JP1
JP2
JP3		 On
Off
Off		 JP5
JP6		 1-2
1-2		 JP8
JP9
JP10
JP11		 Closed
Closed
Closed
Closed		 JP14
JP15
JP16		 Off
On
On		 JP17 Open JP18 2-3
PR-133 66 x 2 JP1
JP2
JP3		 On
Off
Off		 JP5
JP6		 1-2
1-2		 JP8
JP9
JP10
JP11		 Closed
Closed
Closed
Closed		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
PR-166 66 x 2.5 JP1
JP2
JP3		 On
Off
On		 JP5
JP6		 1-2
1-2		 JP8
JP9
JP10
JP11		 Closed
Closed
Closed
Closed		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
* The "I/O Voltage" jumpers (JP5 & JP6) are only on revision B motherboard. Not on revision D.

Note
The "bus speed" and "multiplier" settings listed for the K5 are based solely on AMD’s information of "…the bus speed and clock multiplier jumpers should be set to match the equivalent Pentium." If the information provided with the CPU indicates to use different settings, then those should be used in lieu of this table.

K6
CPU Speed(MHz) Bus Speed (MHz)
& Multiplier		 Multiplier I/O Voltage* Core Voltage Bus Speed Linear Mode PCI/ CPU Bus Synchronization
166(Model 6) 66 x 2.5 JP1
JP2
JP3		 On
Off
On		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Closed
Open
Open
Closed		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
200(Model 6) 66 x 3 JP1
JP2
JP3		 Off
Off
On		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Closed
Open
Open
Closed		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
200(Model 7) 66 x 3 JP1
JP2
JP3		 Off
Off
On		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Open		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
233(Model 6) 66 x 3.5 JP1
JP2
JP3		 Off
Off
Off		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Closed		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
233(Model 7) 66 x 3.5 JP1
JP2
JP3		 Off
Off
Off		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Open		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
266(Model 7) 66 x 4 JP1
JP2
JP3		 On
On
Off		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Open		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3

* The "I/O Voltage" jumpers (JP5 & JP6) are only on revision B motherboard. Not on revision D.
Model 6 is .35m
Model 7 is .25m

K6-2
CPU Speed (MHz) Bus Speed (MHz)
& Multiplier		 Multiplier I/O Voltage* Core Voltage Bus Speed Linear Mode PCI/ CPU Bus Synchronization
266 66 x 4 JP1
JP2
JP3		 On
On
Off		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Open		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
300** 66 x 4.5 JP1
JP2
JP3		 On
On
On		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Open		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
333*** 66 x 5 JP1
JP2
JP3		 Off
On
On		 JP5
JP6		 2-3
2-3		 JP8
JP9
JP10
JP11		 Open
Open
Closed
Open		 JP14
JP15
JP16		 On
Off
On		 JP17 Open JP18 2-3
* The "I/O Voltage" jumpers (JP5 & JP6) are only on revision B motherboard. Not on revision D.
** 66 MHz bus only. AMD shipped the K6-2/300 in both 100 MHz bus and 66. This motherboard doesn’t support 100 MHz.
*** 66 MHz bus only. AMD shipped the K6-2/333 in both 95 MHz bus and 66. This motherboard doesn’t support 95 MHz.