PI7C8140A

2-PORT PCI-to-PCI BRIDGE

PLX PCI6140 COMPARISON

PERICOM SEMICONDUCTOR

JUNE 2004

Page 2 of 3

PERFORMANCE COMPARISON: PI7C8140A vs. PLX PCI6140

The performance data was measured using an in-house evaluation board slotted into an off-the-shelf

motherboard. Fast Ethernet (100Mbit LAN) Cards reside in each of the 4 PCI slots on the secondary bus of

the evaluation board. In each comparison, the hardware and software remain constant. The only item

changed is the bridge on the evaluation board. Two different sets of hardware were used, and the

description of each fixture is listed. In each test setup, a PCI exerciser program is used to generate traffic

or write packets from the PCI Fast Ethernet card to memory and then read back from memory to the PCI

Fast Ethernet card.

TEST CASE 1

Motherboard:

Tyan S2721-533 v1.02

Chipset:

Intel E7501 server

Processor:

Intel Xeon 2.4GHz

Memory:

512MB DDR2100

Video:

Onboard video

Other PCI Devices:

No other PCI devices active

A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board.

Results: Transfer rate measured in Megabits per second

Card Number

Pericom PI7C8140A

PLX PCI6140

LAN Card 1

35.81 – 38.45 Mb/s

10.96 – 12.16 Mb/s

LAN Card 2

33.30 – 38.30 Mb/s

10.05 – 13.95 Mb/s

LAN Card 3

18.10 – 20.70 Mb/s

3.50 – 5.40 Mb/s

LAN Card 4

33.83 – 36.60 Mb/s

9.81 – 15.74 Mb/s

TEST CASE 2

Motherboard:

SuperMicro P3TDLE

Chipset:

ServerWorks ServerSet III LE

Processor:

Intel P III 800

Memory:

512MB

Video:

S3 TrioV64/DX

Other PCI Devices:

No other PCI devices active

A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board.

Results: Transfer rate measured in Megabits per second

Card Number

Pericom PI7C8140A

PLX PCI6140

LAN Card 1

47.09 – 50.01 Mb/s

15.66 – 19.63 Mb/s

LAN Card 2

83.73 – 85.99 Mb/s

64.02 – 69.17 Mb/s

LAN Card 3

46.85 – 49.45 Mb/s

13.82 – 16.73 Mb/s

LAN Card 4

82.69 – 87.00 Mb/s

59.90 – 63.57 Mb/s