Compaq 6000 Supplementary Manual page 7

ECG066/1198
T B
ECHNOLOGY RIEF
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memory size and evenly splitting those DIMMs between the two memory channels. Table 1 is a
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DIMM configuration guide for optimizing performance of dual memory buses. The table shows
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matched memory sizes on both banks. Other memory configurations are valid.
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T 1 : G
A B L E
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Memory Size
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32 MB
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64 MB
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64 MB
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64 MB
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. . 128 MB
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128 MB
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128 MB
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128 MB
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256 MB
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. . 256 MB
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256 MB
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256 MB
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512 MB
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512 MB
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512 MB
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512 MB
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1 GB
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1 GB
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1 GB
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1 GB
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. . 2 GB
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2 GB
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. . * The degree of performance optimization is indicated by a numerical range. Level 1 represents the best performance. Levels 2,
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3, and 4 indicate progressively lower performance.
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The exact performance increase to be gained by optimizing the memory subsystem is highly
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dependent upon the application. Some applications will see less than 1 percent benefit, while
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others may see as much as 33 percent. In general, workstation applications with large data sets
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(for example, MacNeil Schwendler Corporation's NASTRAN Finite Element Analysis software)
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make better use of the dual memory controllers than most PC productivity applications with small
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data sets.
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7
(cont.)
C
U I D E F O R O N F I G U R I N G
O P
T O P T I M I Z E
Memory Bus 1
DIMMs
—
2 x 16 MB
—
—
4 x 16 MB
2 x 32 MB
—
—
4 x 32 MB
2 x 64 MB
—
—
4 x 64 MB
6 x 64 MB
8 x 64 MB
—
8 x 64 MB
4 x 128 MB
8 x 128 MB
—
4 x 256 MB
8 x 256 MB
D M
U A L E M O R Y
E R F O R M A N C E
Memory Bus 2 Optimization
DIMMs Level *
2 x 16 MB 1
2 x 16 MB 1
4 x 16 MB 2
2 x 32 MB 3
4 x 16 MB 1
2 x 32 MB 2
4 x 32 MB 3
2 x 64 MB 4
4 x 32 MB 1
2 x 64 MB 2
4 x 64 MB 3
2 x 128 MB 4
4 x 64 MB 1
2 x 64 MB 2
— 3
4 x 128 MB 4
4 x 128 MB 1
4 x 128 MB 2
— 3
4 x 256 MB 4
4 x 256 MB 1
— 2
B
U S E S