Dram Clock - AOpen AX59PRO User Manual

Hardware Installation
AMD K6 CPU Core
Frequency
K6-166 166MHz =
K6-200 200MHz =
K6-233 233MHz =
K6-266 266MHz=
K6-300 300MHz=
K6-2 333 333MHz
K6-2 350 350MHz
K6-2 366 366MHz
K6-2 380 380MHz
K6-2 400 400MHz
K6-2 450 450MHz
K6-III 400 400MHz
K6-III 450 450MHz
Note: Cyrix 6x86, 6x86MX (M2) and AMD K5 CPU use P-
rating for the reference of CPU benchmark compared with
INTEL P54C, their internal core frequency is not exactly equal
to P-rating marked on the CPU. For example, Cyrix P166+ is
133MHz but performance is almost equal to P54C 166MHz
and AMD PR133 is 100MHz but performance is almost equal
to INTEL P54C 133MHz.

2.2.3 DRAM Clock

JP23 JP24 DRAM CLK
1-2 1-2 CPU CLK
2-3 2-3 AGP CLK
2-12
Ratio External
Bus Clock
2.5x 66MHz
3x 66MHz
3.5x 66MHz
4x 66MHz
4.5x 66MHz
3.5x 95MHz
3.5x 100MHz
5.5x 66MHz
4x 95MHz
4x 100MHz
4.5x 100MHz
4x 100MHz ON
4.5 100MHz
JP23, JP24 are used to decide if DRAM
clock is synchronous with CPU or AGP
clock.
JP4
JP5
JP6
JP23
S1 S2 S3 JP4,JP5,JP6,JP25
ON ON OFF 1-2 & 1-2 & 1-2 & 1-2
OFF ON OFF 1-2 & 1-2 & 1-2 & 1-2
OFF OFF OFF 1-2 & 1-2 & 1-2 & 1-2
ON OFF ON 1-2 & 1-2 & 1-2 & 1-2
ON ON ON 1-2 & 1-2 & 1-2 & 1-2
OFF OFF OFF 2-3 & 1-2 & 2-3 & 2-3
OFF OFF OFF 1-2 & 1-2 & 2-3 & 2-3
OFF OFF ON 1-2 & 1-2 & 1-2 & 1-2
ON OFF ON 2-3 & 1-2 & 2-3 & 2-3
ON OFF ON 1-2 & 1-2 & 2-3 & 2-3
ON ON ON 1-2 & 1-2 & 2-3 & 2-3
OFF ON 1-2 & 1-2 & 2-3 & 2-3
ON ON ON 1-2 & 1-2 & 2-3 & 2-3
1 2 3
JP24
JP25
1 2 3
CPU CLK