Legacy PC/XT/AT Bus Designs

8-bit ISA (PC/XT)

8

4.77

1/2

2.39

8-bit ISA (AT)

8

8.33

1/2

4.17

16-bit ISA (AT-Bus)

16

8.33

1/2

8.33

EISA bus

32

8.33

1

33

VL-bus

32

33

1

133

Micro Channel Architecture Buses

MCA-16

16

5

1

10

MCA-32

32

5

1

20

MCA-16 streaming

16

10

1

20

MCA-32 streaming

32

10

1

40

MCA-64 streaming

64

10

1

80

MCA-64 streaming

64

20

1

160

Floppy Drive Interfaces

DD floppy interface

1

0.25

1

0.03125

HD floppy interface

1

0.5

1

0.0625

ED floppy interface

1

1

1

0.125

Laptop/Notebook Buses

PC-Card (PCMCIA)

16

10

1

20

CardBus

32

33

1

133

PCI-Based Buses

LPC bus

4

33

1

16.67

PCI

32

33

1

133

PCI 66MHz

32

66

1

266

PCI 64-bit

64

33

1

266

PCI 66MHz/64-bit

64

66

1

533

PCI-X 66

64

66

1

533

PCI-X 133

64

133

1

1,066

PCI-X 266

64

266

1

2,133

PCI-X 533

64

533

1

4,266

PCI-Express 1.0, 1 lane

1

2,500

0.8

250

PCI-Express 1.0, 4 lanes

4

2,500

0.8

1,000

PCI-Express 1.0, 16 lanes

16

2,500

0.8

4,000

PCI-Express 1.0, 32 lanes

32

2,500

0.8

8,000

Chipset Interconnects

Intel hub interface (HI 1.5)

8

66

4

266

Intel Direct Media Interface (HI 2.0)

8

266

4

2000

AMD HyperTransport 2x2

2

200

2

100

AMD HyperTransport 4x2

4

200

2

200

AMD HyperTransport 8x2

8

200

2

400

AMD HyperTransport 16x2

16

200

2

800

AMD HyperTransport 32x2

32

200

2

1,600

AMD HyperTransport 2x4

2

400

2

200

AMD HyperTransport 4x4

4

400

2

400

AMD HyperTransport 8x4

8

400

2

800

AMD HyperTransport 16x4

16

400

2

1,600

AMD HyperTransport 32x4

32

400

2

3,200

AMD HyperTransport 2x8

2

800

2

400

AMD HyperTransport 4x8

4

800

2

800

AMD HyperTransport 8x8

8

800

2

1,600

AMD HyperTransport 16x8

16

800

2

3,200

AMD HyperTransport 10x8 2.0

16

1000

2

4,000

AMD HyperTransport 32x8

32

800

2

6,400

ATI A-Link

16

66

2

266

SiS MuTIOL

16

133

2

533

SiS MuTIOL 1G

16

266

2

1,066

VIA V-Link 4x

8

66

4

266

VIA V-Link 8x

8

66

8

533

VIA Ultra V-Link

8

66

16

1,066

Accelerated Graphics Port Versions

AGP-1X

32

66

1

266

AGP-2X

32

66

2

533

AGP-4X

32

66

4

1,066

AGP-8X

32

66

8

2,133

Legacy Ports

RS-232 Serial

1

0.1152

1/10

0.01152

RS-232 Serial HS

1

0.2304

1/10

0.02304

IEEE 1284 Parallel

8

8.33

1/6

1.38

IEEE 1284 EPP/ECP

8

8.33

1/3

2.77

USB Ports

USB 1.1/2.0 low-speed

1

1.5

1

0.1875

USB 1.1/2.0 full-speed

1

12

1

1.5

USB 2.0 high-speed

1

480

1

60

IEEE-1394 (FireWire) Ports

IEEE 1394a S100

1

100

1

12.5

IEEE 1394a S200

1

200

1

25

IEEE 1394a S400

1

400

1

50

IEEE 1394b S800

1

800

1

100

IEEE 1394b S1600

1

1600

1

200

ATA/IDE Ports

ATA PIO-4

16

8.33

1

16.67

ATA-UDMA/33

16

8.33

2

33

ATA-UDMA/66

16

16.67

2

66

ATA-UDMA/100

16

25

2

100

ATA-UDMA/133

16

33

2

133

Serial ATA (SATA) ports

SATA-150

1

750

2

150

SATA-300

1

1500

2

300

SATA-600

1

3000

2

600

SCSI Ports

SCSI

8

5

1

5

SCSI Wide

16

5

1

10

SCSI Fast

8

10

1

10

SCSI Fast/Wide

16

10

1

20

SCSI Ultra

8

20

1

20

SCSI Ultra/Wide

16

20

1

40

SCSI Ultra 2

8

40

1

40

SCSI Ultra 2/Wide

16

40

1

80

SCSI Ultra 3 (Ultra160)

16

40

2

160

SCSI Ultra 4 (Ultra320)

16

80

2

320

DRAM speeds

FPM DRAM

64

22

1

177

EDO DRAM

64

33

1

266

Synchronous DRAM (SDRAM) Speeds

PC66 SDRAM DIMM

64

66

1

533

PC100 SDRAM DIMM

64

100

1

800

PC133 SDRAM DIMM

64

133

1

1,066

DDR SDRAM Speeds

PC1600 DDR DIMM (DDR200)

64

100

2

1,600

PC2100 DDR DIMM (DDR266)

64

133

2

2,133

PC2700 DDR DIMM (DDR333)

64

167

2

2,666

PC3200 DDR DIMM (DDR400)

64

200

2

3,200

PC3500 DDR (DDR433)

64

216

2

3,466

PC3700 DDR (DDR466)

64

233

2

3,733

DDR2 SDRAM speeds

PC2-3200 DDR2 (DDR2-400)

64

200

2

3,200

PC2-4300 DDR2 (DDR2-533)

64

267

2

4,266

PC2-5400 DDR2 (DDR2-667)

64

333

2

5,333

PC2-6400 DDR2 (DDR2-800)

64

400

2

6,400

Rambus DirectRAM (RDRAM) Speeds

RIMM1200 RDRAM (PC600)

16

300

2

1,200

RIMM1400 RDRAM (PC700)

16

350

2

1,400

RIMM1600 RDRAM (PC800)

16

400

2

1,600

RIMM2100 RDRAM (PC1066)

16

533

2

2,133

RIMM2400 RDRAM (PC1200)

16

600

2

2,400

RIMM3200 RDRAM (PC800)

32

400

2

3,200

RIMM4200 RDRAM (PC1066)

32

533

2

4,266

RIMM4800 RDRAM (PC1200)

32

600

2

4,800

Processor FSB Speeds

66MHz Pentium Pro/II/III/Xeon FSB

64

66

1

533

100MHz Pentium Pro/II/III/Xeon FSB

64

100

1

800

133MHz Pentium III/Xeon FSB

64

133

1

1,066

200MHz Athlon FSB

64

100

2

1,600

266MHz Athlon FSB

64

133

2

2,133

333MHz Athlon FSB

64

167

2

2,666

400MHz Athlon FSB

64

200

2

3,200

533MHz Athlon FSB

64

267

2

4,266

400MHz Pentium 4/Xeon FSB

64

100

4

3,200

533MHz Pentium 4/Xeon FSB

64

133

4

4,266

800MHz Pentium 4/Xeon FSB

64

200

4

6,400

1066MHz Pentium 4 FSB

64

267

4

8,533

266MHz Itanium FSB

64

133

2

2,133

400MHz Itanium 2 FSB

128

100

4

6,400