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The Model 50 received mixed reviews from users and the press at the time of its release, with critics citing its relative affordability and hardware innovations as points for it; and hardware bugs, slow number-crunching performance, and an even slower stock hard drive as points against it. However,
332:
Novel to the Model 50's industrial design among its contemporaries in the PC arena is its largely tool-less method of disassembly. Two thumbscrews at the back of the unit allow the user to pull the lid off the Model 50. Inside, the hard disk and floppy disk drives are affixed to a platform resting
300:
The Model 50 was the most inexpensive entry in the PS/2 line to feature Micro
Channel architecture (MCA) expansion slots, featuring four MCA slots (compared to the Model 60's eight). As with any MCA-equipped PS/2 computer, it lacked the ability to take ISA expansion cards of any kind. The Model 50
288:. By June 1987, the factory was producing 1,000 Model 50s daily, compared to 800 Model 60s. The Model 50 proved so popular that the factory experienced parts shortages by the end of the year. Within the first year of its availability, IBM sold over 440,000 units of the Model 50, according to
349:
for every memory access operation, leading to sluggish performance. In June 1988, IBM introduced the Model 50 Z, which replaced the on-board 125-ns DRAM of its predecessor with 85-ns DRAM, leading to a memory and number-crunching performance boost of roughly 20 percent, according to
360:
slots was replaced by a single SIMM slot on the Model 50 Z, able to take a 1-MB or 2-MB SIMM (compared to only 512-KB SIMMs on the Model 50). The Model 50 Z also replaced the stock 20-MB hard disk drive of the Model 50 with optional 30-MB or 60-MB hard drives, with
380:
retrospectively called it one of the most influential personal computers from the 1980s to the 2020s, owing to bringing VGA and 3.5-inch floppy drives to the masses, as well as influencing the design of future personal computers with its tool-less constitution.
337:
push-pin tabs; IBM shipped the machine with a small plastic wedge (so-called the "crowbar") to assist in the removal of these tabs. Expansion cards are likewise able to be removed from the motherboard with plastic thumbscrews.
232:
endemic to the original Model 50 and increasing system performance. The Model 50 was the best-selling line of PS/2 for several years, IBM selling over 440,000 units in the first year of its availability.
292:, with an additional 650,000 units projected for 1988. By April 1988, it was the top-selling personal computer globally; it occupied the top spot in this segment into at least late 1989.
269:
3,595—compared to $ 2,295 for the entry-level Model 30, which featured an ISA bus. The Model 50 was built into a standard desktop-form-factor case, whereas the Model 60 was built into a
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309:(EGA) of the IBM PC line. The Model 50 occupies a chassis roughly half the volume of its direct predecessor, the
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249:. The PS/2 Model 50, as well as the Model 60, served as the public market introduction of the
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212:(PS/2) family of personal computers. First released in April 1987, the Model 50 features an
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of 10 MHz. In June 1988, the PS/2 Model 50 received an update in the form of the
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of 10 MHz. As with all models in the PS/2 range, the Model 50 features a single
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above the motherboard, able to be removed through the prying of plastic,
209:
241:
The PS/2 Model 50 was introduced in April 1987 alongside the lower-end
1199:
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191:
357:
1082:
345:, rated for 125-ns access times, the original Model 50 inserts
301:
was also the most inexpensive entry in the PS/2 line feature a
1109:
205:
49:
1034:
Micro
Channel Architecture: Revolution in Personal Computing
947:(18). IDG Publications: SR21–SR23 – via Google Books.
924:(23). IDG Publications: 1, 6, 8 – via Google Books.
738:. USA Today Information Network: 1B – via ProQuest.
993:(49). IDG Publications: 1, 113 – via Google Books.
1062:"IBM PS/2 (Model 50 Z) – Technical Specifications"
970:(19). IDG Publications: 1, 89 – via Google Books.
265:. Being a midrange offering, the Model 50 retailed for
826:(32). IDG Publications: 1, 8 – via Google Books.
1005:"IBM PS/2 (Model 50) – Technical Specifications"
757:. Tribune Publishing Company: 4 – via ProQuest.
878:(8). McGraw-Hill: 217–224 – via Vintage Apple.
2222:
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1064:. International Business Machines Corporation. 2000
1007:. International Business Machines Corporation. 2000
803:(14). IDG Publications: 5 – via Google Books.
780:(12). IDG Publications: 1 – via Google Books.
284:The Model 50 was manufactured at IBM's facility in
180:
170:
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136:
123:
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82:
74:
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45:
937:"Model 50's performance gets only passings grades"
842:"The 20 Most Influential PCs of the Past 40 Years"
365:rated twice as fast as the Model 50's 20-MB disk.
1026:
1024:
1022:
914:"PS/2s Fill Gaps in Line, But Users Wanted More"
814:LaPlante, Alice; Ed Scannell (August 7, 1989).
793:"Success or Failure of PS/2 Still Undetermined"
1056:
1054:
901:(14). Ziff-Davis: 38 – via Google Books.
257:standard designed by IBM to replace the aging
1094:
835:
833:
8:
454:
447:
19:
1037:. Van Nostrand Reinhold. pp. 338–339.
706:
704:
313:. Like the PC/AT, the Model 50 features an
50:International Business Machines Corporation
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34:
25:
18:
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983:"IBM Denies Problems with PS/2 Model 50"
770:"IBM PS/2 Units Shipments and Forecast"
732:"IBM reports new PC is red-hot sellout"
700:
440:
2318:Computer-related introductions in 1987
751:"IBM Regaining Spot as No. 1 PC Maker"
399:
7:
981:LaPlante, Alice (December 7, 1987).
960:"Users Debate Value of IBM Model 50"
935:Zachmann, William F. (May 4, 1987).
840:Grevstad, Eric (December 16, 2022).
474:
635:
564:
493:
405:
356:. In addition, the Model 50's dual
2158:ThinkPad 240 with Transmeta Crusoe
719:. p. F1 – via ProQuest.
261:(ISA) first used in their earlier
204:is a midrange desktop computer in
14:
1130:PC business acquisition by Lenovo
816:"IBM to Kill Model 60, Revamp 80"
791:LaPlante, Alice (April 4, 1988).
2194:Professional Graphics Controller
958:LaPlante, Alice (May 11, 1987).
912:LaPlante, Alice (June 6, 1988).
730:Hillkirk, John (June 24, 1987).
119:1.44 MB 3.5-in floppy disks
891:"Faster, Leaner PS/2 Model 50Z"
768:Staff writer (March 21, 1988).
228:, eliminating the insertion of
2245:Industry Standard Architecture
259:Industry Standard Architecture
1:
863:Grehan, Richard (July 1987).
711:Potts, Mark (April 3, 1987).
341:Owing to its relatively slow
889:Vendito, Gus (August 1988).
848:. Ziff-Davis. Archived from
713:"New IBM Computers Unveiled"
396:IBM PS/2 Model 50 submodels
222:Personal System/2 Model 50 Z
196:Badge of the PS/2 Model 50 Z
749:McNair, Jim (May 9, 1988).
2339:
2199:Multi-Color Graphics Array
2179:Monochrome Display Adapter
1123:Influence on the PC market
388:
251:Micro Channel architecture
202:Personal System/2 Model 50
140:1 MB – 7 MB
20:Personal System/2 Model 50
2189:Enhanced Graphics Adapter
1538:
1117:
1047:– via Google Books.
307:Enhanced Graphics Adapter
166:120/240 VAC ～
40:An original PS/2 Model 50
33:
24:
16:1987 IBM desktop computer
1072:– via Ardent Tool.
1015:– via Ardent Tool.
317:processor, running at a
148:20–60 MB hard drive
2214:Extended Graphics Array
1031:Bowlds, Pat A. (1991).
865:"The IBM PS/2 Model 50"
391:List of IBM PS/2 models
237:Development and release
224:, which offered faster
216:processor running at a
185:List of IBM PS/2 models
2184:Color Graphics Adapter
197:
100:June 1988 (Model 50 Z)
1484:PS/2 Note and PS/note
329:drive of the IBM PC.
327:5.25-inch floppy disk
325:drive, replacing the
253:(MCA), a proprietary
195:
2204:Video Graphics Array
852:on February 3, 2024.
369:Reception and legacy
323:3.5-inch floppy disk
303:Video Graphics Array
175:Personal Computer AT
157:Video Graphics Array
111:About 1 million
1243:Industrial Computer
717:The Washington Post
397:
286:Boca Raton, Florida
245:and the higher-end
21:
2277:Music Feature Card
1112:personal computers
395:
273:and featured more
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2305:
2304:
2240:IBM PC compatible
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210:Personal System/2
190:
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69:Personal System/2
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2153:Power Series 600
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78:Desktop computer
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2120:Palm Top PC 110
2100:
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1939:
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1709:701 "Butterfly"
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468:Date introduced
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89:April 1987
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2250:IntelliStation
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2172:Video hardware
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1509:Model 425/425C
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1427:PS/2 portables
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1305:
1300:
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1255:
1253:list of models
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1217:
1207:
1202:
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1190:
1185:
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1173:
1171:list of models
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1150:
1143:
1142:and all-in-one
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296:Specifications
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132:at 10 MHz
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65:Product family
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1744:Power Series
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1634:
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1549:
1468:PS/2 Laptop
1457:pre-ThinkPad
1287:
1282:
1066:. Retrieved
1033:
1009:. Retrieved
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755:Sun Sentinel
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653:one 1.44 MB
582:one 1.44 MB
511:one 1.44 MB
375:
372:
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331:
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240:
221:
201:
199:
83:Release date
57:Manufacturer
1464:Convertible
1422:Portable PC
1380:ThinkCentre
895:PC Magazine
846:PC Magazine
630:Intel 80286
559:Intel 80286
488:Intel 80286
465:Form factor
430:No. of
423:No. of
413:Clock speed
377:PC Magazine
353:PC Magazine
347:wait states
319:clock speed
315:Intel 80286
230:wait states
218:clock speed
214:Intel 80286
171:Predecessor
130:Intel 80286
2312:Categories
2297:ThinkLight
2141:Prototypes
1516:PS/55 Note
1355:ValuePoint
1161:DataMaster
696:References
542:April 1987
432:drive bays
389:See also:
363:seek times
275:drive bays
271:tower case
108:Units sold
97:(Model 50)
2255:Keyboards
2235:IBM BASIC
2087:TransNote
1365:PC Series
987:InfoWorld
964:InfoWorld
918:InfoWorld
820:InfoWorld
797:InfoWorld
774:InfoWorld
736:USA Today
684:June 1988
677:optional
644:, 16-bit
626:8550-061
613:June 1988
606:optional
573:, 16-bit
555:8550-031
535:optional
502:, 16-bit
484:8550-021
410:Processor
385:Submodels
290:Dataquest
46:Developer
2323:IBM PS/2
2292:UltraBay
2230:IBM 5151
2209:IBM 8514
2163:WatchPad
2148:Leapfrog
2113:Handheld
2023:R series
1945:X series
1899:A series
1831:T series
1803:G series
1531:ThinkPad
1405:Portable
1390:M series
1385:A series
1375:NetVista
1350:EduQuest
680:Desktop
609:Desktop
538:Desktop
247:Model 60
243:Model 30
153:Graphics
2287:SurePOS
2265:Model M
2260:Model F
2223:Related
2125:WorkPad
1521:PCradio
1477:CL57 SX
1220:3270 AT
1188:3270 PC
1140:Desktop
475:Ref(s).
462:Monitor
452:Maximum
335:captive
263:IBM PCs
181:Related
145:Storage
93:1987-04
91: (
2080:Others
1697:series
1677:series
1637:series
1587:series
1552:series
1504:N51SLC
1472:L40 SX
1448:Laptop
1370:Aptiva
1318:70 486
1313:70 386
1278:30 286
1263:25 286
1231:Series
1215:AT/370
1193:XT 286
1183:XT/370
1041:
656:60 MB
634:10 (0
589:ST-506
585:30 MB
563:10 (0
518:ST-506
514:20 MB
492:10 (1
137:Memory
2282:Mwave
1654:555BJ
1649:550BJ
1499:N51SX
1494:N45SL
1489:N33SX
1360:Ambra
1335:PS/55
1308:65 SX
1298:55 LS
1293:55 SX
1268:25 SX
1210:PC AT
1178:PC XT
868:(PDF)
669:2 MB
666:1 MB
623:50 Z
598:2 MB
595:1 MB
552:50 Z
527:1 MB
524:1 MB
471:Notes
445:Stock
426:slots
416:(MHz)
401:Model
311:PC/AT
163:Power
116:Media
52:(IBM)
2013:X61t
2008:X60t
1936:A31p
1933:A30p
1924:A22p
1921:A21p
1918:A20p
1915:A22e
1912:A22m
1909:A21m
1906:A20m
1417:5110
1412:5100
1345:PS/1
1340:PS/V
1288:50 Z
1248:PS/2
1238:5550
1205:PCjr
1156:5120
1070:2021
1039:ISBN
1013:2021
872:Byte
660:ESDI
404:IBM
358:SIMM
343:DRAM
277:and
267:US$
200:The
75:Type
2130:Z50
2071:R61
2066:R60
2061:R52
2056:R51
2051:R50
2046:R40
2041:R32
2036:R31
2031:R30
2003:X60
1998:X41
1993:X40
1988:X32
1983:X31
1978:X30
1973:X24
1968:X23
1963:X22
1958:X21
1953:X20
1930:A31
1927:A30
1889:T61
1884:T60
1879:T43
1874:T42
1869:T41
1864:T40
1859:T30
1854:T23
1849:T22
1844:T21
1839:T20
1821:G50
1816:G41
1811:G40
1787:860
1782:851
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1772:823
1767:822
1762:821
1757:820
1752:800
1734:770
1729:765
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1719:755
1714:750
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1664:570
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1644:500
1624:390
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1614:365
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1604:350
1599:310
1594:300
1574:240
1569:235
1564:230
1559:220
1437:P75
1432:P70
1110:IBM
945:XXI
673:VGA
642:MCA
602:VGA
571:MCA
531:VGA
500:MCA
481:50
455:RAM
448:RAM
441:HDD
436:FDD
420:Bus
406:P/N
255:bus
226:RAM
208:'s
206:IBM
125:CPU
60:IBM
2314::
1695:xx
1675:xx
1635:xx
1585:xx
1550:xx
1323:80
1303:60
1283:50
1273:30
1258:25
1200:JX
1166:PC
1053:^
1021:^
989:.
985:.
966:.
962:.
943:.
939:.
922:10
920:.
916:.
897:.
893:.
876:12
874:.
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844:.
832:^
824:11
822:.
818:.
801:10
799:.
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778:10
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772:.
753:.
734:.
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703:^
650:3
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579:3
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567:)
508:3
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496:)
281:.
1693:7
1673:6
1633:5
1583:3
1548:2
1328:E
1102:e
1095:t
1088:v
991:9
968:9
899:7
662:)
658:(
636:w
591:)
587:(
565:w
520:)
516:(
494:w
95:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
