AMD K6 (K6, K6-2, and K6-III)
| General Details | Name |
K6 K6-2 K6-III K6-2+ K6-III+ |
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| Codename |
HA (Nx686), K6 (0.30 µm), Little Foot (0.25 µm) K6-3D, Chomper K6-3D+, Sharptooth |
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| Family/Generation | 80586, 6th Generation, MMX | ||
| Vendor | AMD | ||
| Manufacturer | AMD | ||
| First Introduction |
Apr 2, 1997 (K6 166, 200 and 233 MHz) Jan 6, 1998 (K6 233 and 266 MHz) Apr 7, 1998 (K6 300 MHz) May 28, 1998 (K6-2 266, 300 and 333 MHz) Aug 27, 1998 (K6-2 350 MHz) Sep 22, 1998 (mobile K6 300 MHz) Nov 3, 1998 (embedded K6 233 and 266 MHz) Nov 16, 1998 (K6-2 366, 380, and 400 MHz) Jan 13, 1999 (mobile K6-2 266, 300, and 333 MHz) Feb 22, 1999 (K6-III 400 and 450 MHz) Feb 26, 1999 (K6-2 450 MHz) Mar 8, 1999 (mobile K6-2 350, 366, and 380 MHz) Apr 5, 1999 (K6-2 475 MHz) May 24, 1999 (mobile K6-III 350, 366, and 380 MHz) Jun 15, 1999 (mobile K6-2 400 MHz) Jun 28, 1999 (embedded K6-2 233, 266, and 300 MHz) Aug 30, 1999 (K6-2 500 Mhz) Sep 20, 1999 (mobile K6-2 433, 450, and 475 MHz) Sep 20, 1999 (mobile K6-III 400, 433, and 450 MHz) Nov 29, 1999 (K6-2 533 MHz) Dec 6, 1999 (embedded K6-2 333 and 350 MHz) Jan 19, 2000 (embedded K6-2 350 and 400 MHz) Feb 22, 2000 (K6-2 550 MHz) Apr 18, 2000 (K6-2+ and K6-III+ 450, 475, and 500 MHz) Jun 26, 2000 (K6-2+ 533 and 550 MHz) Sep 26, 2000 (embedded K6-2+ 400..500 MHz) Sep 26, 2000 (embedded K6-2+ 350..450 MHz low voltage) Sep 26, 2000 (embedded K6-III+ 400..550 MHz) Sep 26, 2000 (embedded K6-III+ 400..500 MHz low voltage) |
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| Physical Details | Package Type |
321 Pin PGA 360 Pin BGA 349 Pin OBGA (embedded K6-2+ and K6-III+) |
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| Package Size |
4.95 cm x 4.95 cm (PGA) 2.50 cm x 2.50 cm (BGA or OBGA) |
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| Socket or Slot |
Socket 7 (PGA) Proprietary (BGA or OBGA) |
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| Transistors |
8,800,000 (K6, includes 84 KB L1 Cache) 9,300,000 (K6-2, includes 84 KB L1 Cache) 21,300,000 (K6-III, includes 84 KB L1 and 256 KB L2 Cache) ??? (K6-2+, includes 84 KB L1 and 128 KB L2 Cache) ??? (K6-III+, includes 84 KB L1 and 256 KB L2 Cache) |
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| Process Technology |
5Mi, 0.30 µm, CMOS 5Mi, 0.25 µm, CMOS ???, 0.18 µm, CMOS |
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| Die Size |
162, then 157 mm² (K6 0.30 µm) 68 mm² (K6 0.25 µm) 81 mm² (K6-2 0.25 µm) 118 mm² (K6-III 0.25 µm) ??? mm² (K6-2+ 0.18 µm) ??? mm² (K6-III+ 0.18 µm) |
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| Electrical Details | Split Voltage | Yes (determined via Motherboard) | |
| Core Voltage |
3.3 V (xPx Marking) 3.2 V (xNx Marking) 2.9 V (xLx Marking) 2.4 V (xHx Marking) 2.3 V (xGx Marking) 2.2 V (xFx Marking) 2.1 V (xDx Marking) 2.0 V (xCx Marking) 1.9 V (xMx Marking) 1.8 V (xNx Marking) 1.7 V (xPx Marking) 1.6 V (xTx Marking) 1.5 V (xUx Marking) |
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| I/O Voltage | 3.3 V | ||
| Typical Power |
166 MHz: 10.3 W (K6 0.30 µm) 200 MHz: 12.0 W (K6 0.30 µm) 233 MHz: 17.0 W (K6 0.30 µm) 200 MHz: 7.50 W (K6 0.25 µm) 233 MHz: 8.10 W (K6 0.25 µm) 266 MHz: 8.75 W (K6 0.25 µm) 300 MHz: 9.25 W (K6 0.25 µm) 233 MHz: 5.40 W (mobile K6) 266 MHz: 5.90 W (mobile K6) 300 MHz: 6.60 W (mobile K6) 233 MHz: 8.10 W (K6-2) 266 MHz: 8.85 W (K6-2) 300 MHz: 10.35 W (K6-2) 333 MHz: 11.40 W (K6-2) 350 MHz: 11.98 W (K6-2) 366 MHz: 12.48 W (K6-2) 380 MHz: 12.95 W (K6-2) 400 MHz: 13.65 W (K6-2 @ 2.4 V) 450 MHz: 17.05 W (K6-2 @ 2.4 V) 475 MHz: 17.75 W (K6-2 @ 2.4 V) 400 MHz: 10.15 W (K6-2 @ 2.2 V) 450 MHz: 11.30 W (K6-2 @ 2.2 V) 475 MHz: 11.90 W (K6-2 @ 2.2 V) 500 MHz: 12.45 W (K6-2 @ 2.2 V) 533 MHz: 12.45 W (K6-2 @ 2.2 V) 550 MHz: 15.00 W (K6-2 @ 2.3 V) 233 MHz: 6.30 W (K6-2 @ 1.9 V) 266 MHz: 7.00 W (K6-2 @ 1.9 V) 300 MHz: 7.00 W (K6-2 @ 1.9 V) 333 MHz: 7.00 W (K6-2 @ 1.9 V) 350 MHz: 7.70 W (K6-2 @ 1.9 V) 266 MHz: 6.30 W (mobile K6-2) 300 MHz: 7.00 W (mobile K6-2) 333 MHz: 7.70 W (mobile K6-2) 350 MHz: 12.60 W (mobile K6-2) 366 MHz: 12.60 W (mobile K6-2) 380 MHz: 12.60 W (mobile K6-2) 400 MHz: 12.60 W (mobile K6-2) 433 MHz: 12.60 W (mobile K6-2) 450 MHz: 12.60 W (mobile K6-2) 475 MHz: 12.60 W (mobile K6-2) 450 MHz: 12.60 W (K6-2+) 475 MHz: 12.60 W (K6-2+) 500 MHz: 12.60 W (K6-2+) 533 MHz: 14.20 W (K6-2+) 550 MHz: 14.20 W (K6-2+) 350 MHz: 5.60 W (embedded K6-2+ @ 1.5 V) 400 MHz: 6.90 W (embedded K6-2+ @ 1.6 V) 450 MHz: 8.70 W (embedded K6-2+ @ 1.7 V) 400 MHz: 11.40 W (embedded K6-2+ @ 2.0 V) 450 MHz: 12.65 W (embedded K6-2+ @ 2.0 V) 500 MHz: 13.90 W (embedded K6-2+ @ 2.0 V) 400 MHz: 16.10 W (K6-III @ 2.4 V) 450 MHz: 17.10 W (K6-III @ 2.4 V) 400 MHz: 10.85 W (K6-III @ 2.2 V) 450 MHz: 12.15 W (K6-III @ 2.2 V) 350 MHz: 12.60 W (mobile K6-III) 366 MHz: 12.60 W (mobile K6-III) 380 MHz: 12.60 W (mobile K6-III) 400 MHz: 12.60 W (mobile K6-III) 433 MHz: 12.60 W (mobile K6-III) 450 MHz: 12.60 W (mobile K6-III) 450 MHz: 12.60 W (K6-III+) 475 MHz: 12.60 W (K6-III+) 500 MHz: 12.60 W (K6-III+) 400 MHz: 7.10 W (embedded K6-III+ @ 1.6 V) 450 MHz: 8.95 W (embedded K6-III+ @ 1.7 V) 500 MHz: 11.40 W (embedded K6-III+ @ 1.8 V) 400 MHz: 11.75 W (embedded K6-III+ @ 2.0 V) 450 MHz: 13.00 W (embedded K6-III+ @ 2.0 V) 500 MHz: 14.35 W (embedded K6-III+ @ 2.0 V) 550 MHz: 15.70 W (embedded K6-III+ @ 2.0 V) |
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| Maximum Power |
166 MHz: 17.2 W (K6 0.30 µm) 200 MHz: 20.0 W (K6 0.30 µm) 233 MHz: 28.3 W (K6 0.30 µm) 200 MHz: 12.45 W (K6 0.25 µm) 233 MHz: 13.50 W (K6 0.25 µm) 266 MHz: 14.55 W (K6 0.25 µm) 300 MHz: 15.40 W (K6 0.25 µm) 233 MHz: 9.00 W (mobile K6) 266 MHz: 9.80 W (mobile K6) 300 MHz: 11.00 W (mobile K6) 233 MHz: 13.50 W (K6-2) 266 MHz: 14.70 W (K6-2) 300 MHz: 17.20 W (K6-2) 333 MHz: 19.00 W (K6-2) 350 MHz: 19.95 W (K6-2) 366 MHz: 20.80 W (K6-2) 380 MHz: 21.60 W (K6-2) 400 MHz: 22.70 W (K6-2 @ 2.4 V) 450 MHz: 28.40 W (K6-2 @ 2.4 V) 475 MHz: 29.60 W (K6-2 @ 2.4 V) 400 MHz: 16.90 W (K6-2 @ 2.2 V) 450 MHz: 18.80 W (K6-2 @ 2.2 V) 475 MHz: 19.80 W (K6-2 @ 2.2 V) 500 MHz: 20.75 W (K6-2 @ 2.2 V) 533 MHz: 20.75 W (K6-2 @ 2.2 V) 550 MHz: 25.00 W (K6-2 @ 2.3 V) 233 MHz: 9.00 W (K6-2 @ 1.9 V) 266 MHz: 10.00 W (K6-2 @ 1.9 V) 300 MHz: 10.00 W (K6-2 @ 1.9 V) 333 MHz: 10.00 W (K6-2 @ 1.9 V) 350 MHz: 11.00 W (K6-2 @ 1.9 V) 266 MHz: 9.00 W (mobile K6-2) 300 MHz: 10.00 W (mobile K6-2) 333 MHz: 11.00 W (mobile K6-2) 350 MHz: 16.00 W (mobile K6-2) 366 MHz: 16.00 W (mobile K6-2) 380 MHz: 16.00 W (mobile K6-2) 400 MHz: 16.00 W (mobile K6-2) 433 MHz: 16.00 W (mobile K6-2) 450 MHz: 16.00 W (mobile K6-2) 475 MHz: 16.00 W (mobile K6-2) 450 MHz: 16.00 W (K6-2+) 475 MHz: 16.00 W (K6-2+) 500 MHz: 16.00 W (K6-2+) 533 MHz: 18.00 W (K6-2+) 550 MHz: 18.00 W (K6-2+) 350 MHz: 7.50 W (embedded K6-2+ @ 1.5 V) 400 MHz: 9.50 W (embedded K6-2+ @ 1.6 V) 450 MHz: 12.00 W (embedded K6-2+ @ 1.7 V) 400 MHz: 16.50 W (embedded K6-2+ @ 2.0 V) 450 MHz: 17.50 W (embedded K6-2+ @ 2.0 V) 500 MHz: 18.50 W (embedded K6-2+ @ 2.0 V) 400 MHz: 26.80 W (K6-III @ 2.4 V) 450 MHz: 29.50 W (K6-III @ 2.4 V) 400 MHz: 18.10 W (K6-III @ 2.2 V) 450 MHz: 20.20 W (K6-III @ 2.2 V) 350 MHz: 16.00 W (mobile K6-III) 366 MHz: 16.00 W (mobile K6-III) 380 MHz: 16.00 W (mobile K6-III) 400 MHz: 16.00 W (mobile K6-III) 433 MHz: 16.00 W (mobile K6-III) 450 MHz: 16.00 W (mobile K6-III) 450 MHz: 16.00 W (K6-III+) 475 MHz: 16.00 W (K6-III+) 500 MHz: 16.00 W (K6-III+) 400 MHz: 9.50 W (embedded K6-III+ @ 1.6 V) 450 MHz: 12.00 W (embedded K6-III+ @ 1.7 V) 500 MHz: 14.50 W (embedded K6-III+ @ 1.8 V) 400 MHz: 16.50 W (embedded K6-III+ @ 2.0 V) 450 MHz: 17.50 W (embedded K6-III+ @ 2.0 V) 500 MHz: 18.50 W (embedded K6-III+ @ 2.0 V) 550 MHz: 19.50 W (embedded K6-III+ @ 2.0 V) |
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| Cooling | Required | ||
| Clock Frequencies | CPU Core Speed |
166, 200, 233, 266, 300 MHz (K6) 233, 266, 300, 333, 350, 366, 380, 400, 450, 475 (K6-2) 500, 533, 550 MHz (K6-2) 400, 450 MHz (K6-III) 350, 366, 380, 400, 433, 450 MHz (mobile K6-III) 450, 475, 500, 533, 550 MHz (K6-2+) 450, 475, 500, 550 MHz (K6-III+) |
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| L1 Cache Speed | 1.0x Core Speed | ||
| L2 Cache Speed |
1.0x External Bus Speed (K6 and K6-2) 1.0x Core Speed (K6-III, K6-2+, K6-III+) |
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| External Bus Speed |
66 or 100 MHz 95 MHz (333, 380, and 475 MHz Core Speed) 97 MHz (533 MHz Core Speed) |
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| Core/Bus Ratio |
2.5x, 3.0x, 3.5x, 4.0x, 4.5x, 5.0x, 5.5x, 6.0x (K6, K6-2, K6-III) 2.0x, 3.0x, 3.5x, 4.0x, 4.5x, 5.0x, 5.5x, 6.0x (K6-2+, K6-III+) |
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| Miscellaneous | usual Motherboard | Single Processor Socket 7 | |
| usual Chipset | Intel 82430FX, 82430HX, 82430VX, 82430TX, or non-Intel | ||
| Pictures |
0.30 µm K6 Die (36 KB JPG) 0.25 µm K6-2 Die (106 KB JPG) 0.25 µm K6-III Die (150 KB JPG) CPUID=0561h Top (87 KB JPG) and Bottom (102 KB JPG) CPUID=0561h Top (87 KB JPG) and Bottom (96 KB JPG) CPUID=0562h Top (80 KB JPG) and Bottom (95 KB JPG) CPUID=0570h Top (80 KB JPG) and Bottom (98 KB JPG) CPUID=0580h Top (102 KB JPG) and Bottom (101 KB JPG) CPUID=058Ch Top (77 KB JPG) and Bottom (77 KB JPG) CPUID=0591h Top (61 KB JPG) and Bottom (71 KB JPG) CPUID=05Dxh Top (65 KB JPG) |
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| Processor Core | Generic Details | RISC, Out-of-order and Speculative Execution | |
| Specific Details | 24 Entry ICU | ||
| Registers |
32 Bit Integer, 80 Bit FP, 64 Bit MM, 48 Entry RAT (K6) 32 Bit Integer, 80 Bit FP, 64 Bit MM, 69 Entry RAT (K6-2 etc.) |
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| Pipeline Depth | 6 | ||
| Instruction Decoder |
1-2x IA-32/Cycle, 4x ROPs/Cycle (2x Short or 1x Long or 1x Vector) |
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| Execution Units | Simple ALU, Complex ALU, MMX, Load, Store, Branch, Non-pipelined FPU,3DNow! (K6-2 etc.) | ||
| Execution Speed | up to 6x ROPs/Cycle | ||
| Processor Buses | Address Bus Width | 32 Bit | |
| Data Bus Width | 64 Bit | ||
| Physical Memory | 2^32 Bit = 4 GB | ||
| Virtual Memory | 2^32 Bit = 4 GB | ||
| Logical Memory | (8,190 + 8,192) x 4 GB = 65,528 GB (~64 TB) | ||
| Multiprocessing | N/A | ||
| Power Management |
HLT, STPCLK, SMI/SMM PowerNow! Technology (K6-2+ and K6-III+) |
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| Processor Caches | Level 0 | N/A | |
| Level 1 | Code |
32 KB, 2-Way, 32 Byte/Line, SI, 2x Fetch Port (supports Split-line Acess), 5 Pre-decode Bits/Byte (adds 20 KB), LRU |
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| Data |
32 KB, 2-Way, 32 Byte/Line, MESI, Dual-ported, Write Allocate, LRA |
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| Level 2 | K6 and K6-2 | External, depends on Motherboard | |
| K6-III |
On-Die, Unified, 256 KB, 4-Way, 32 Byte/Line 2x 64 Bit Uni-directional Bus, Non-Blocking, 4 GB cacheable |
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| K6-2+ |
On-Die, Unified, 128 KB, 4-Way, 32 Byte/Line 2x 64 Bit Uni-directional Bus, Non-Blocking, 4 GB cacheable, Write Allocate, LRU |
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| K6-III+ |
On-Die, Unified, 256 KB, 4-Way, 32 Byte/Line 2x 64 Bit Uni-directional Bus, Non-Blocking, 4 GB cacheable, Write Allocate, LRU |
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| Level 3 | K6-III | External, depends on Motherboard | |
| K6-2+ | External, depends on Motherboard | ||
| K6-III+ | External, depends on Motherboard | ||
| Processor Buffers | Read Buffer |
32 Byte for Code Cache 32 Byte for Data Cache 32 Byte for BIU |
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| Write Buffer |
32 Byte, 8 Byte WC (model=8 with stepping=8..Fh, or newer) ??? (7?) Entry L1 Data-to-L2 Cache Store Queue (K6-III etc.) |
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| Prefetch Queue | 16 Byte | ||
| Branch Prediction | Static | Yes | |
| Dynamic | 8,192 Entries, 2-Level | ||
| BTC | 16 Entries, 16 Byte/Entry | ||
| RSB | 16 Entries, 16 Byte/Entry | ||
| TLB | 4 KB Code | 64 Entries, 1-Way, LRU | |
| 4 MB Code | 1 Entry, Full, LRU | ||
| 4 KB Data | 128 Entries, 2-Way, LRU | ||
| 4 MB Data | 2 Entries, Full, LRU | ||
| PDE | 8 Entries, ???, ??? | ||
| L2 Code (K6-III etc.) | ??? | ||
| Instruction Set | Regular | IA-32 | |
| Floating Point | Integrated | ||
| Multi Media | MMX, 3DNow! (K6-2 and K6-III), Extended 3DNow! (K6-2+ and K6-III+) | ||
| Processor Modes | Real, Protected, Virtual, Paging, SMM | ||
