Abit AT7 Computer Hardware User Manual


 
Introducing the BIOS
User’s Manual
3-17
Active to CMD (Trcd):
Two options are available: 2T or 3T. The default setting is 3T.
Trcd timing value = RAS to CAS latency + rd/wr command delay
DDR DQS Input Delay:
Two options are available: Auto or Manual. The default setting is Auto. If you set to Manual, then the
next item will be available.
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Input Delay Value:
This item allows you to adjust the data input strobe delay time of memory. You can key in the HEX
number into this section. The minimum number is 0000, and maximum number is 00FF.
DDR DQS Output Delay:
Two options are available: Auto or Manual. The default setting is Auto. If you set to Manual, then the
next item will be available.
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Output Delay Value:
This item allows you to adjust the data output strobe delay time of memory. You can key in the HEX
number into this section. The minimum number is 0000, and maximum number is 00FF.
MD Drive Strength:
Four options are available: Auto ( Low ( Medium ( High. The default setting is Auto. This item can
adjust the drive strength for data sent to DDR SDRAM. This will depend on your DDR SDRAM
specification and numbers to set. More DDR SDRAM DIMM installed, you may set it to High.
DIMM1&2 CMD Drive Strength:
Four options are available: Auto ( Low ( Medium ( High. The default setting is Auto. This item can
adjust the drive strength for command sent to DDR SDRAM (This adjustment for DIMM 1 and DIMM 2
only). This will depend on your DDR SDRAM specification and numbers to set. More DDR SDRAM
DIMM installed, you may set it to High.
DIMM3&4 CMD Drive Strength:
Four options are available: Auto ( Low ( Medium ( High. The default setting is Auto. This item can
adjust the drive strength for command sent to DDR SDRAM (This adjustment for DIMM 3 and DIMM 4
only). This will depend on your DDR SDRAM specification and numbers to set. More DDR SDRAM
DIMM installed, you may set it to High.
Enhance DRAM Performance:
Two options are available: Disabled or Enabled. The default setting is Disabled. This item can improve
your system DRAM performance.
DRAM Access:
Two options are available: 2T ( 3T. The default setting is 3T. This item allow you to choose the DRAM
access time cycle, 2T can let you get quick DRAM acess time than 3T, and 3Tis a general DRAM setting.