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¦³½ìªº¬O,¤ñDIMM¼Ò²Õ·sªºRIMM¼Ò²Õ¨Ï¥Î¸û¤pªº16¦ì¤¸¸ê®Æ³q¸ô,¦ý¬O¥¦­Ì¥H«D±`§Öªº³t«×¶Ç°e¸ê°T,¤@¦¸¶Ç°e¼Æ­Ó¸ê®Æ¸s¡C RIMM¼Ò²ÕÀ³¥Îpipelining§Þ³N¤@¦¸¶Ç¿é¥|­Ó16¦ì¤¸¸s¨ì¤¤¥¡³B²z¾¹,©ó¬O¸ê®Æ¤´¥H64¦ì¤¸ªº¼Æ¶q³Q³B²z

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°O¾ÐÅéÀx¦s¤¤¥¡³B²z¾¹»Ý­n³B²zªº¸ê®Æ¡C°O¾ÐÅé´¹¤ù»P¼Ò²Õªº®e¶q¬O¥H¦Ê¸U¦ì¤¸(Megabits)¥H¤Î¦Ê¸U¦ì¤¸²Õ(Megabytes)¨Óªí¥Üªº¡C­pºâ¼Ò²Õ¤W°O¾ÐÅé®e¶q®É¥²¶·°O±o¨â¥ó­«­n¨Æ¶µ:

¤@­Ó°O¾ÐÅé¼Ò²Õ¥Ñ¤@²Õ´¹¤ù²Õ¦¨¡C±N©Ò¦³´¹¤ùªº®e¶q¬Û¥[¡A«K¯à±o¨ì¾ã­Ó¼Ò²Õªº°O¾ÐÅé®e¶q¡C¥H¤U¬O¨Ò¥~ªºª¬ªp:
  • ·í¤@³¡¤Àªº®e¶q³Q¨Ï¥Î¦b¨ä¥L¥\¯à,¨Ò¦p°»¿ù¤W¡C
  • ·í¤@³¡¤Àªº®e¶q¨Ã¨S¦³³Q¨Ï¥Î,Á|¨Ò¨Ó»¡,¬Y¨Ç´¹¤ù¥i¯à¦³¥Î°µ³Æ¥÷ªºÃB¥~®e¶q(¤£±`¹J¨ì)¡C
´¹¤ù®e¶q±`¥H¦Ê¸U¦ì¤¸(Megabits)¨Óªí¥Ü,¦Ó¼Ò²Õ®e¶q±`¥H¦Ê¸U¦ì¤¸²Õ(Megabytes)ªí¥Ü¡C³o¼Ë«Ü®e©ö²V²c,¤×¨ä¬O³\¦h¤H¤£¦Ûı¦a¦b´£¨ì¦ì¤¸²Õ®É¨Ï¥Î¦ì¤¸¦Ó¤Ï¤§¥çµM¡C¬°¤F©ú¥Õªí¥Ü,¥»®Ñ¨Ï¥Î¥H¤Uªº¼Ð·Ç: ·í´£¨ì¤@­Ó¼Ò²Õ¤Wªº°O¾ÐÅé¼Ò²Õªº®e¶q,³o¸Ì¨Ï¥Î ¡§¼Ò²Õ®e¶q(Module Capacity)¡¨¨Óªí¥Ü,¦Ó·í´£¨ì°O¾ÐÅé´¹¤ùªº®e¶q,³o¸Ì¨Ï¥Î ¡§´¹¤ù±K«×(Chip Density)¡¨¨Óªí¥Ü¡C¼Ò²Õ®e¶q±N¥H¦Ê¸U¦ì¤¸²Õ(MB¨â­Ó¤j¼g¦r¥À)ªí¥Ü¦Ó´¹¤ù±K«×¥H¦Ê¸U¦ì¤¸(Mbit¡A¨ä¤¤bit¬°¤p¼g)ªí¥Ü¡C

¹s¥óCOMPONENT ®e¶qªí¥ÜCAPACITY EXPRESSION ®e¶q³æ¦ìCAPACITY UNITS ¨Ò¤lEXAMPLE
´¹¤ùChips ´¹¤ù±K«×Chip Density Mbit(¦Ê¸U¦ì¤¸) 64Mbit
°O¾ÐÅé¼Ò²ÕMemory Modules ¼Ò²Õ®e¶qModule Capacity MB(¦Ê¸U¦ì¤¸²Õ) 64MB


´¹¤ù±K«×(Chip Density)

¨C­Ó°O¾ÐÅé´¹¤ù¬O¤@­Ó¥Ñ·L¤pcell©Ò²Õ¦¨ªº¯x°}¡C¨C¤@­ÓcellÀx¦s¤@¦ì¤¸ªº¸ê®Æ¡A°O¾ÐÅé´¹¤ù±`¥H¯à°÷Àx¦sªº¸ê®Æ¼Æ¶q¨Óªí¥Ü¡AºÙ¬°´¹¤ù±K«×¡C§A¥i¯à¤w¸g¬Ý¹L´¹¤ù±K«×ªº¨Ò¤l,¨Ò¦p ¡§64Mbit SDRAM¡¨ ©Î¬O ¡§8M by 8¡¨¡C¤@­Ó64Mbit´¹¤ù§t¦³¤»¤d¥|¦Ê¸U­Ócell¨Ã¯à°÷Àx¦s¤»¤d¥|¦Ê¸U¦ì¤¸ªº¸ê®Æ¡C¡§8M by 8¡¨ªº»¡ªk§ó¥J²Óªº§Î®e64Mbit´¹¤ù¤¤ªº¨ä¤¤¤@ºØ¡C

¦b°O¾ÐÅé·~¬É,DRAM´¹¤ù±`¥H¨äcell²Õ´¨Ó§Î®e¡A²Ä¤@­Ó¼Æ¦rªí¥Ü´¹¤ùªºªø«×(¥H¦ì¸mªí¥Ü),²Ä¤G­Ó¼Æ¦r¥Nªí´¹¤ùªº¼e«×(Width,¥H¦ì¤¸²Õªí¥Ü)¡A±Nªø«×»P¼e«×¬Û­¼´N¯à°÷±o¨ì´¹¤ùªº±K«× ¥H¤U¬O¤@¨Ç¨Ò¤l:

¥Ø«e¥i±oªº´¹¤ù§Þ³N

´¹¤ùªø«×,¥H¦Ê¸U­Ó¦ì¸m¨Óºâ ´¹¤ù¼e«×,¥H¦ì¤¸­p ´¹¤ù±K«× = ªøx¼e
16Mbit Chips
4Mx4 4 4 16
1Mx16 1 16 16
2Mx8 2 8 16
16Mx1 16 1 16
64Mbit Chips
4Mx16 4 16 64
8Mx8 8 8 64
16Mx4 16 4 64
128Mbit Chips
8Mx16 8 16 128
16Mx8 16 8 128
32Mx4 32 4 128
256Mbit Chips
32Mx8 32 8 256


¼Ò²Õ®e¶q(Module Capacity)

ª¾¹D¼Ò²Õ¤Wªº´¹¤ù®e¶q«á,­pºâ°O¾ÐÅé¼Ò²Õªº®e¶q´N«Ü®e©ö¤F¡C¦pªG¦³¤K­Ó64Mbit´¹¤ù,¨º´N¬O¤@­Ó512Mbit¼Ò²Õ¡A¦ý¬O¥Ñ©ó°O¾ÐÅé¼Ò²Õªº®e¶q¬O¥H¦Ê¸U¦ì¤¸²Õ(Megabytes)¦Ó«D¦Ê¸U¦ì¤¸(Megabits)­pºâ,©ó¬O¥²¶·±N¦ì¤¸¼ÆÂà´«¦¨¦ì¤¸²Õ¼Æ¥Ø ¥H512Mbit¼Ò²Õ¬°¨Ò:



§A¥i¯àÅ¥¹L·~¬É§Î®e¼Ð·Ç°O¾ÐÅé¼Ò²Õ¬° ¡§4M x 32¡¨,©Î ¡§16M x 64¡¨ ¦b³o¨Ç¨Ò¤l¤¤,°O¾ÐÅé¼Ò²Õªº®e¶q¥i¥H¥H­pºâ´¹¤ù®e¶qªº¤è¦¡­pºâ



Here are some additional examples:

STANDARD MODULE TYPES

STANDARD MODULE DEPTH IN LOCATIONS MODULE WIDTH IN DATA BITS CAPACITY
IN MBITS =
DEPTH X WIDTH
CAPACITY IN MB = MBITS/8
72-Pin 1Mx32
2Mx32
4Mx32
8Mx32
16Mx32
32Mx32
1
2
4
8
16
32
32
32
32
32
32
32
32
64
128
256
512
1024
4
8
16
32
64
128
168-Pin 2Mx64
4Mx64
8Mx64
16Mx64
32Mx64
2
4
8
16
32
64
64
64
64
64
128
256
512
1024
2048
16
32
64
128
256


¦p¦Pµy¦­´£¨ìªº,¦L¨ê¹q¸ôªO¤W¥u¯à°÷®e¯Ç¤@©w¼Æ¥Øªº´¹¤ù ¥H·~¬É¼Ð·Çªº168pin DIMM¼Ò²Õ¬°°ò¦,¨Ï¥Î64Mbit´¹¤ù©Ò¯à»s³yªº¼Ò²Õ³Ì¤j®e¶q¬°128MB,¨Ï¥Î128Mbit´¹¤ù©Ò¯à»s³yªº¼Ò²Õ³Ì¤j®e¶q¬°256MB¦Ó¨Ï¥Î256Mbit´¹¤ù©Ò»s³yªº¼Ò²Õ³Ì¤j®e¶q¬°512MB

¬ÛÅ|§Þ³N

³\¦h¤j³W¼Ò¦øªA¾¹©Î¤u§@¯¸»Ý­n§ó°ª®e¶qªº¼Ò²Õ¥H¹F¨ì¼Æ¤Q»õ¦ì¤¸²Õ©Î§ó°ªªº¨t²Î°O¾ÐÅé®e¶q ´£°ª°O¾ÐÅé¼Ò²Õ®e¶qªº¤è¦¡¦³¨âºØ¡A»s³y°Ó¥i¥H§Q¥Î´¹¤ù¬ÛÅ|©Î¬O¹q¸ôªO¬ÛÅ|ªº§Þ³N¡C

´¹¤ù¬ÛÅ|

¦b´¹¤ù¬ÛÅ|ªº¹Lµ{¤¤,¨â­Ó´¹¤ù³Q­«Å|¦b¤@°_¨Ã¥u¦û¥Î¤@­Ó´¹¤ù©Ò»ÝªºªÅ¶¡¡C¦³¨Ç®É­Ô,´¹¤ù¤º³¡¬ÛÅ|¦b´¹¤ù¼t´N§¹¦¨¦Ó¥i¥H¬Ý°_¨Ó¹³¤@­Ó´¹¤ù¦Ó¤w¡A¨ä¥Lªº®É­Ô´¹¤ù¬O¥Ñ¥~³¡¬ÛÅ|¡C¤U­±ªº¹Ï¨ÒÅã¥Ü¨â­Ó¥Ñ¥~³¡Å|¦Xªº´¹¤ù:


Example of externally stacked chips.


¹q¸ôªO¬ÛÅ| (Board Stacking)

¥i¥H·Q¨£,¹q¸ôªO¬ÛÅ|¥]¬A±N¨â­Ó¼Ò²Õ¦L¨ê¹q¸ôªO¬ÛÅ|¨Ï¥Î ¦b¹q¸ôªO¦X¨Öªº¹Lµ{¤¤,²Ä¤G­Ó¹q¸ôªO³Q±µ¦X¨ì¥D­nªº¹q¸ôªO¡AµM«á®t¦b¥D¾÷ªOªº°O¾ÐÅé´¡¼Ñ¤W


Example of a stacked module.


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