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850 Common Jumpers - Cyrix

• 6x86
• 6x86L
• 6x86MX
• MII

Note: Some versions of the 6x86 have a Core and I/O voltage of 3.3V instead of the 3.5V listed above. Ensure which voltage is needed (it should be listed on the CPU itself), and change the voltage if necessary. (refer to the previous "jumpers" page)

6x86L

CPU Speed (MHz)	Bus Speed (MHz) & Multiplier	Multiplier		I/O Voltage*		Core Voltage		Bus Speed		Linear Mode		PCI/ CPU Bus Synchronization
PR-120+ 100 MHz	50 x 2	JP1 JP2 JP3	On Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Open Open Open Closed	JP14 JP15 JP16	On On On	JP17	Closed	JP18	2-3
PR-150+ 120 MHz	60 x 2	JP1 JP2 JP3	On Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Open Open Open Closed	JP14 JP15 JP16	Off On On	JP17	Closed	JP18	2-3
PR-166+ 133 MHz	66 x 2	JP1 JP2 JP3	On Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Open Open Open Closed	JP14 JP15 JP16	On Off On	JP17	Closed	JP18	2-3
PR-200+ 150 MHz	75 x 2	JP1 JP2 JP3	On Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Open Open Open Closed	JP14 JP15 JP16	Off On Off	JP17	Closed	JP18	1-2

* The "I/O Voltage" jumpers (JP5 & JP6) are only on revision B motherboard. Not on revision D.

6x86MX

CPU Speed (MHz)	Bus Speed (MHz) & Multiplier	Multiplier		I/O Voltage*		Core Voltage		Bus Speed		Linear Mode		PCI/ CPU Bus Synchronization
PR-166 133 MHz	66 x 2	JP1 JP2 JP3	On Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Closed Open Open Closed	JP14 JP15 JP16	On Off On	JP17	Closed	JP18	2-3
PR-166 150 MHz	60 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	Off On On	JP17	Closed	JP18	2-3
PR-200 150 MHz	75 x 2	JP1 JP2 JP3	On Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Closed Open Open Closed	JP14 JP15 JP16	Off On Off	JP17	Closed	JP18	1-2
PR-200 166 MHz	66 x 2.5	JP1 JP2 JP3	On Off On	JP5 JP6	2-32-3	JP8 JP9 JP10 JP11	Closed Open Open Closed	JP14 JP15 JP16	On Off On	JP17	Closed	JP18	2-3
PR-233 188 MHz	75 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	Off On Off	JP17	Closed	JP18	1-2

* The "I/O Voltage" jumpers (JP5 & JP6) are only on revision B motherboard. Not on revision D.

MII

CPU Speed (MHz)	Bus Speed (MHz) & Multiplier	Multiplier		I/O Voltage*		Core Voltage		Bus Speed		Linear Mode		PCI/ CPU Bus Synchronization
266 200 MHz	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	Closed	JP18	2-3
300 225 MHz	75 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	Off On Off	JP17	Closed	JP18	1-2
300 233 MHz	66 x 3.5	JP1 JP2 JP3	Off Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Closed Open Open Closed	JP14 JP15 JP16	On Off On	JP17	Closed	JP18	2-3
333 263 MHz	75 x 3.5	JP1 JP2 JP3	Off Off Off	JP5 JP6	2-3 2-3	JP8 JP9 JP10 JP11	Closed Open Open Closed	JP14 JP15 JP16	Off On Off	JP17	Closed	JP18	1-2

* The "I/O Voltage" jumpers (JP5 & JP6) are only on revision B motherboard. Not on revision D.