PI7C8140A
2-PORT PCI-to-PCI BRIDGE
PLX PCI6140 COMPARISON
PERICOM SEMICONDUCTOR
JUNE 2004
Page 1 of 3
FEATURE COMPARISON: PI7C8140A vs. PLX PCI6140
Features:
Feature
Pericom PI7C8140A
PLX PCI6140
Interfaces
!
Complies with the following specifications:
PCI Local Bus Specification
PCI-to-PCI Bridge Architecture Specification
!
3.3V and 5V signaling environments
!
66MHz capable
!
Concurrent primary and secondary bus operations
Revision 2.2
Revision 1.1
yes
yes
yes
Revision 2.1
Revision 1.1
no (3.3V w/5V
tolerance)
no
yes
Memory Buffer Architecture
!
Dynamic Prefetching Control
yes
no
Bus Arbitration
!
Programmable internal arbiter for the secondary bus
with support for up to 4 external masters
yes
yes
IEEE 1149.1 JTAG port
!
Available boundary scan testing
no
no
Compact PCI Hot Swap
!
Hot Swap Friendly Support
yes
yes
Packaging
!
128-pin QFP
!
Extended commercial temp range: 0C to 85C
yes
yes
yes
no (0C to 70C)
Pin differences (128-pin QFP):
pin number
Pericom PI7C8140A
PLX PCI6140
65 SCAN_TM# No
Connect
106 SCAN_EN S_IDEN
(reserved)
Register differences:
Pericom PI7C8140A
PLX PCI6140
Vendor ID
12D8h
3388h
Device ID
8140h
0021h
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
PI7C8140A
2-PORT PCI-to-PCI BRIDGE
PLX PCI6140 COMPARISON
PERICOM SEMICONDUCTOR
JUNE 2004
Page 3 of 3
TEST CASE 3
Motherboard:
MSI
GNB
Max
Chipset:
Intel
E7205
Processor: Intel
P4
2.4GHz
Memory: 256MB
DDR266
Video:
nVidia GeForce 2 MX-400 w 64MB, AGP4X
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
28.76 30.05 Mb/s
3.93 6.18 Mb/s
LAN Card 2
31.87 33.56 Mb/s
3.78 5.83 Mb/s
LAN Card 3
29.99 32.86 Mb/s
3.05 6.01 Mb/s
LAN Card 4
28.36 31.46 Mb/s
2.58 5.29 Mb/s
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