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This table lists an overview of all the machines from SGI up to the O2. Please get in touch if there are any ommisions, errors, etc.
PM1 - based on a design licensed from Andy Bechtolsheim, Stanford (before SUN).
IP = “Inhouse Processor”
| Proc | Model Name | CPU | Speed | Comment |
| PM1 | IRIS 1000 | 68000/68010 | 8 Mhz | Terminal, 10 slot chassis |
| PM1 | IRIS 1200 | 68000/68010 | 8 Mhz | Terminal, 10 slot chassis |
| PM1 | IRIS 1400 | 68000/68010 | 8 Mhz | Workstation, (disk & O/S) |
| IP1 | IRIS 2000 | 68010 | 10 Mhz | Terminal, 10 slot chassis |
| IP1 | IRIS 2200 | 68010 | 10 Mhz | Terminal, 20 slot chassis |
| IP1 | IRIS 2400 | 68010 | 10 Mhz | Workstation, (disk & O/S) |
| IP1 | IRIS 2500 | 68010 | 10 Mhz | Rack Workstation, (disk & O/S) |
| IP2 | IRIS 3020 | 68020 | 16 Mhz | 10 GEs, 8 bits, 4/16 MB RAM |
| IP2 | IRIS 3030 | 68020 | 16 Mhz | 10 GEs, 32 bits, 8/16 MB RAM |
| IP2 | IRIS 3115 | 68020 | 16 Mhz | 12 GEs, 8 bits, 4/8 MB RAM |
| IP2 | IRIS 3120 | 68020 | 16 Mhz | 12 GEs, 8 bits, 4/16 MB RAM, 72 MB disk |
| IP2 | IRIS 3120B | 68020 | 16 Mhz | 12 GEs, 8 bits, 4/16 MB RAM, 170 MB disk |
| IP2 | IRIS 3130 | 68020 | 16 Mhz | 12 GEs, 32 bits, 8/16 MB RAM, FPU |
| R2300 | 4D/60 | R2300 | 8 Mhz | |
| IP4 | 4D/70 | R2000 | 12.5 Mhz | VME bus |
| IP4 | 4D/50 | R2000 | 8 Mhz | Marketing variant of 4D/70, VME bus |
| IP4.5 | 4D/80,85 (IP4) | R2000 | 16.67 Mhz | VME bus |
| IP5 | 4D/1×0 | 2x R2000 | 16.67 Mhz | MP bus, 1-2 cpu boards |
| IP6 | 4D/20 | R2000 | 12.5 Mhz | Personal Iris |
| IP7 | 4D/2×0 | 2x R3000 | 25 Mhz | MP bus, 1-4 cpu boards |
| IP9 | 4D/210 (IP7) | R3000 | 25 Mhz | put memory onto cpu board to reduce cost |
| IP10 | 4D/25 (IP6) | R2000 | 20 Mhz | |
| IP12 | Indigo | R3000 | 33 Mhz | |
| IP14 | 4D/30 (IP12) | R3000 | 30 Mhz | redesign to fit the PI chassis |
| IP14 | 4D/35 (IP12) | R3000 | 36 Mhz | redesign to fit the PI chassis |
| IP13 | 4D/3×0 (IP7) | 1,2x R3000 | 33 Mhz | MP bus, 1-4 cpu boards |
| IP15 | 4D/4×0 (IP7) | 2x R3000 | 40 Mhz | MP bus, 1-4 cpu boards |
| IP17 | Crimson | R4000 | 100 Mhz | |
| IP17 | Crimson | R4400 | 150 Mhz | |
| IP19 | Onyx L/XL | 1,2,4x R4400 | 100,150,200,250 Mhz | 1-6 cpu boards |
| IP19 | Challenge L/XL | 1,2,4x R4400 | 100,150,200,250 Mhz | 1-9 cpu boards |
| IP20 | Indigo | R4000 | 100 Mhz | |
| IP20 | Indigo | R4400 | 150 Mhz | |
| IP21 | Power Onyx | 1,2x R8000 | 75,90 Mhz | 1-6 cpu boards |
| IP21 | Power Challenge | 1,2x R8000 | 75,90 Mhz | 1-9 cpu boards |
| IP22 | Indigo2 | R4600SC | 133,175 Mhz | |
| IP22 | Indigo2 | R4400 | 100,150,200,250 Mhz | |
| IP24 | Indy (IP22) | R4000PC | 100 Mhz | |
| IP24 | Indy (IP22) | R4000SC | 100 Mhz | |
| IP24 | Indy (IP22) | R4600PC | 100,133 Mhz | |
| IP24 | Indy (IP22) | R4600SC | 133 Mhz | 512K Secondary Cache |
| IP24 | Indy (IP22) | R4400SC | 150,175 Mhz | 1MB Secondary Cache |
| IP25 | Onyx, Challenge | R10000 | 190 Mhz | |
| IP26 | Power Indigo2 | R8000 | 75 Mhz | |
| IP27 | Origin 200/2000 | R10000 | 180/195 Mhz | |
| IP28 | Indigo2 | R10000 | 190 Mhz | |
| IP30 | Indy (IP22) | R5000PC | 150 Mhz | |
| IP30 | Indy (IP22) | R5000SC | 150,180 Mhz | |
| IP32 | O2 | R5000 | 180 Mhz | |
| IP32 | O2 | R10000 | 180 Mhz |