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992 Motherboard Jumpers - Cyrix 6x86MX/MII CPU

Cyrix rates the speed of their processors as a megahertz-equivalent performance level based upon industry-standard benchmark comparisons to the PentiumŪ II processor when tested in equivalently configured computer systems. In the table below, the Cyrix CPU designation is followed by the internal CPU clock speed. For example, the PR-150+ has an internal CPU clock speed of 120 MHz.

CPU Speed Bus Clock & Multiplier SW1
(1)		 SW1
(2)		 SW1
(3)		 SW1
(4)		 SW1
(5)		 SW1
(6)
PR-150+
120MHz		 60MHz x 2 Closed Open Open Closed Open Open
PR-166+
133MHz		 66MHz x 2 Open Open Open Closed Open Open
PR-166+
150MHz		 60MHz x 2.5 Closed Open Open Closed Closed Open
PR-200+
150MHz		 75MHz x 2 Open Closed Closed Closed Open Open
PR-200+
166MHz		 66MHz x 2.5 Open Open Open Closed Closed Open
PR-200+
180MHz		 60MHz x 3 Closed Open Open Open Closed Open
PR-233+
188MHz		 75MHz x 2.5 Open Closed Closed Closed Closed Open
PR-233+
200MHz		 66MHz x 3 Open Open Open Open Closed Open
PR-300+
233MHz		 66MHz x 3.5 Open Open Open Open Open Open
PR-300+
225MHz		 75MHz x 3 Open Closed Closed Open Closed Open
PR-333+
263MHz		 75MHz x 3.5 Open Closed Closed Open Open Open

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