This is a list of computer systems based on the Micro Channel architecture that were not manufactured by IBM, mainly by Micro Channel Developers Association members. Such third-party computers were also referred to as PS/2 clones or MCA clones.[1][2] The first third-party Micro Channel–based computer was Tandy Corporation's 5000 MC in July 1988.[3][4][5] Despite expensive research and development costs on the part of third-party manufacturers of Micro Channel computers—in part due to the expensive licensing fees incurred by IBM in order to allow legal use of their technology—by 1990 most MCA clones were not fully compatible with the Micro Channel architecture or expansion cards and peripherals based on Micro Channel.[6] By the time IBM was winding down the PS/2 line of personal computers (which in 1987 acted as the means of introducing Micro Channel to the general public) in 1992, NCR Corporation remained one of the few committed vendors of MCA clones.[7]

Systems

Mfg.ModelProcessorClock speed
(MHz)		L2 cache
(KB)		HDDStock/min.
memory		Max. memory
(MB)		Form factorDate introducedRef(s).
ALRPowerPro/MCIntel 804863364–512 (CachePak boards)549TowerJanuary 1991[8][9]
ALRPowerPro/MC SMP/DMPIntel 80486 or Intel 80486DX2 (optionally dual)33 (i486)
50 (i486DX)		64–512 (CachePak boards)549TowerJanuary 1992[10][11]
ALRPowerCache 4Intel 8048625128150 MB or 340 MB (SCSI)232Tower or desktopJuly 1990 (c.)[12]
ALRModular Processor System
(a.k.a. MPS)		Intel 80386 or Intel 8048625 (i486) or 33 (i386 and i486)64–512(non-SCSI)149DesktopNovember 1990[13][14][15]
ALRModular Processor System 486ASX
(a.k.a. MPS II)		Intel 80486SX2064–512None (Model 80) or 80 MB (Model 101)149DesktopApril 1991[16]
ALRMicroFlex 3300Intel 803863332–6470 MB or 120 MB or 642 MB264TowerOctober 1990[17][18]
ALRMicroFlex 7000Intel 8038625128120 MB or 300 MB (ESDI)216TowerJanuary 1989[19][20]
ApricotQi 300Intel 80386SX16None30 MB (RLL) or 50 MB (SCSI) or 120 MB28DesktopFebruary 1989[21][22]: 122[23]
ApricotQi 600
(a.k.a. Qi PCi)		Intel 80386256450 MB (RLL) – 510 MB (SCSI)116DesktopFebruary 1989[21][22][24]
ApricotQi 900Intel 80486256450 MB or 80 MB or 100 MB or 380 MB116DesktopApril 1990[25]
ApricotQi 486SX-16Intel 80486SX2512850 MB (RLL) – 510 MB (SCSI)116DesktopMay 1992[26][27]
ApricotQi 486DX-25Intel 804862512850 MB (RLL) – 510 MB (SCSI)116DesktopApril 1991 (c.)[28][27]
ApricotQi 486DX-33Intel 804863312850 MB (RLL) – 510 MB (SCSI)116DesktopMay 1992[26][27]
ApricotQi 486DX2-50Intel 80486DX25012850 MB (RLL) – 510 MB (SCSI)116DesktopMay 1992[26][27]
ApricotQi 486DX2-66Intel 80486DX26612850 MB (RLL) – 510 MB (SCSI)116DesktopMay 1992[26][27]
ApricotVX FT[a]Intel 80386 or Intel 804862564 or 128157 MB or 347 MB or 647 MB or 1.05 GB416TowerSeptember 1989[29][30]
ApricotFTs
(a.k.a. FT Mk II)		Intel 80486SX or Intel 80486 or Intel 80486DX2 (optionally dual)25 (i486SX) or 33 (i486) or 50 or 66 (i486DX2)50 MB or 100 MB or 200 MB or 380 MB or 510 MB or 1.2 GB116TowerJune 1991[31][32]
ApricotFTeIntel 80486SX or Intel 80486 or Intel 80486DX225 (i486SX or i486) or 33 (i486) or 50 or 66 (i486DX2)None50 MB or 100 MB or 200 MB or 380 MB or 510 MB or 1.2 GB116Full-towerJuly 1991[33][34]
ApricotFT//sIntel 80486DX2 or Intel Pentium66 (i486DX2) or 60 (Pentium)192 (i486DX2) or 256 (Pentium)192 (i486DX2) or 256 (Pentium)TowerJune 1993[35][36]
ApricotFT//eIntel 80486DX2 or Intel Pentium66 (i486DX2) or 60 (Pentium)192 (i486DX2) or 256 (Pentium)192 (i486DX2) or 256 (Pentium)Full-towerJune 1993[35][37]
BullMicral 500Intel 8038620200 MBDesktopOctober 1989 (c.)[38][39]
CumulusGL Computer/MC 386SXIntel 80386SX2580 MB2DesktopJuly 1992[40]
CumulusGL Computer/MC 486Intel 8048633200 MB4DesktopJuly 1992[40]
First Class
Systems		325iIntel 803862540 MB216DesktopApril 1990[41]
First Class
Systems		F16/SXIntel 80386SX1640 MB18DesktopNovember 1989[41][42]
First Class
Systems		F20/DXIntel 803862040 MB216DesktopNovember 1989[41][42]
GridDesk 386mcIntel 8038620216DesktopApril 1989 (c.)[43][41]
Leading
Edge		Model D3/MCIntel 80386SX1614DesktopApril 1990[41]
Memorex[b]Telex Model 7255Intel 803861648DesktopFebruary 1990[41][44]
Memorex[b]Telex Model 7270[c]Intel 80386253248DesktopJune 1990[41][45][46]
MemorexTelex Model 8257Intel 80386SX20February 1992[47]
MemorexTelex Model 8290Intel 80486SX33February 1992[47]
MemorexTelex Model 9290[d]Intel 80486DX25064DesktopNovember 1992 (c.)[48]
MiTACMPS-3000FIntel 803862532124DesktopJanuary 1990[49][41]
MiTACMPS-2386Intel 80386SX1640 MB or 100 MB124DesktopMarch 1989 (c.)[50][6]: 99–101[41]
NCRSystem 3320Intel 80386SX2044 MB or 100 MB28Desktop1990[51]
NCRSystem 3325Intel 80486SX (-2XXX-...)
Intel 80486DX (-3XXX-...)
Intel 80486DX2 (-4XXX-...)
Intel 80486DX4 (-7XXX-...)		33 (i486SX/DX)
66 (i486DX2)
100 (i486DX4)		016 (i486SX) or 128Small form factor desktop1990[52]
NCRSystem 3335Intel 80486SX251160128Small form factor desktopNovember 1991[53][54]
NCRSystem 3340Intel 8048625100 MB or 200 MB216Desktop1990[55]
NCRSystem 3345Intel 8048633100 MB or 200 MB or 340 MB464Desktop1990[56]
NCRSystem 3350Intel 80486SX or Intel 80486DX225 or 33 (i486SX)
66 (i486DX2)		120 MB or 213 MB or 340 MB or 535 MB or 1.05 GB4192Desktop1990[57]
NCRSystem 3360Intel Pentium (optionally dual)600512 (parity-based)
256 (EDAC-based)		Tower1990[58]
NCRSystem 3410Intel 80486SX or Intel 80486DX233 (i486SX)
66 (i486DX2)		213 MB or 340 MB or 535 MB or 1.05 GB4192Tower1990[59]
NCRSystem 3416Intel Pentium (optionally dual)600256 (EDAC-based, -1000 and -1002 models)
512 (parity-based, -1010 model)		Tower1990[60]
NCRSystem 3430Intel Pentium (optionally dual)602560256 (EDAC-based, -1000 and -1002 models)
512 (parity-based, -1010 model)		Tower1990[61]
NCRSystem 3445Intel 8048633None or 200 MB or 327 MB or 670 MB416Tower1990[62]
NCRSystem 3550Intel 80486DX2 (up to 8 identical processors)50256 (external; 8 KB internally per processor)320 MB – 13 GB16256Tower1990[63]
Research
Machines		Nimbus PC-286Intel 802861040 MB or 60 MB or 120 MB116DesktopApril 1989[64]
Research
Machines		Nimbus PC-386Intel 803861640 MB or 60 MB or 120 MB116DesktopApril 1989[64]
OlivettiP500Intel 803861640 MB or 80 MB or 135 MB (ESDI)116DesktopJuly 1989[65][66]
OlivettiP700[e]Intel 803862532124DesktopJuly 1991[46][67]
OlivettiP750Intel 8048625100 MB or 200 MB232DesktopAugust 1990[68][69]
OlivettiP800Intel 803862564135 MB416TowerJuly 1989[65][66]
OlivettiM300-25
(a.k.a. P500/E)		Intel 80386SX2060 MB216Desktop[70]
OlivettiM480-30Intel 8048625210 MB or 270 MB or 340 MB or 510 MB or 525 MB432Desktop[71]
OlivettiM480-40Intel 8048633210 MB or 340 MB or 525 MB432Desktop[72]
OlivettiM480-50[d]Intel 80486DX25064DesktopJuly 1993 (c.)[73][74]
OlivettiM480-60Intel 8048650210 MB or 340 MB or 525 MB816Tower[75]
OlivettiM6-520Intel 80486SX or Pentium OverDrive25120 MB or 210 MB or 525 MB or 1.05 GB864Desktop[76]
OlivettiM6-540Intel 80486 or Pentium OverDrive33120 MB or 210 MB or 525 MB or 1.05 GB864Desktop[76]
OlivettiM6-560Intel 80486DX2 or Pentium OverDrive66120 MB or 210 MB or 525 MB or 1.05 GB864Desktop[76]
Reply286/16Intel 8028616030 MB or 60 MB or 120 MB (EDSI)28DesktopNovember 1989[77]
Reply286/20Intel 8028620030 MB or 60 MB or 120 MB (EDSI)28DesktopNovember 1989[77]
Reply386SX/16Intel 80386SX16030 MB or 60 MB or 120 MB (EDSI)28DesktopMarch 1990[77]
Reply386SX/20Intel 80386SX20030 MB or 60 MB or 120 MB (EDSI)216DesktopMarch 1990[77]
ReplyModel 16Intel 80286 or Intel 80386SX16 or 20030 MB or 60 MB or 120 MB or 325 MB (EDSI)88Small form factor desktopMarch 1990[78]
ReplyModel 16 386SLCIBM 386SLC200120 MB48Small form factor desktopAugust 1992[79]
ReplyModel 16 486SLC2IBM 486SLC2400120 MB416Small form factor desktopDecember 1992[80]
ReplyModel 32Intel 80386 or Intel 80486SX or Intel 8048625–33 (386) or 20 (486SX) or 25–50 (486DX)64 (386DX at 25 MHz) or 128 (386DX at 33 MHz)40 MB – 1.2 GB (EDSI)4–1632 (64 with adapter)Small form factor desktopNovember 1990[81]
SNIPCM-3DsxIntel 8038616 (386)040 MB – 160 MB (EDSI)416Small form factor desktopNovember 1990[82]
SNIPCM-4T/33Intel 8048633 (486)0330 MB – 660 MB  – 1000 MB (SCSI)816TowerDecember 1991[83]
Tandy5000 MC[f]Intel 803862040 MB (ST-506) or 84 MB216DesktopJuly 1988[3][4][5]
WangMC 350/16SIntel 803861620 MB or 40 MB or 100 MB28DesktopSeptember 1989[84][85]
Wells AmericanCompuStar[g]Intel 8086 or Intel 80286 or Intel 803865–10 (8088) or 20 (80286) or 16–25 (80386)2.5 (8086) or 16 (80286 and 80386)TowerSeptember 1988[86][87][88]
WLT
Systems[h]		PC Express MC-316S-5Intel 80386SX1628DesktopMarch 1990[89][41]

See also

Notes

  1. ^ According to a Byte magazine cover story, the Apricot VX FT was the first i486-based computer system ever released.[30]
  2. ^ OEMed by Normerel SA, a division of SMT Goupil
  3. ^ Rebadged MiTAC MPS-3000F
  4. ^ Clone of the IBM PS/2 Model 90 XP 486
  5. ^ Rebadged MiTAC MPS-3000F
  6. ^ The first Micro Channel–based personal computer not manufactured by IBM
  7. ^ The CompuStar was a hybrid ISA–Micro Channel system. Its motherboard featured a modular bus design featuring two riser card slots, allowing for five ISA cards on a riser card in one slot and five MCA cards on a riser card in the other slot. Alternatively, users could install two riser cards of identical busses to give the computer 10 ISA slots or 10 Micro Channel slots.[88]
  8. ^ Mail-order subsidiary of Wang Laboratories

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