This is an entry for Phoronix LCH. Feel free to comment on the Linux compatibility for the Realtek RTL-8139 10/100baseT PCI NIC in this thread.

Realtek Semiconductor Co. Ltd. RTL-8139 10/100baseT PCI NIC

Description: 10/100baseT network interface chip, often found integrated into desktop PC motherboards and no-name el cheapo NICs. Tested PCI expansion card version.
Hardware Notes: Tested successfully under Linux 2.4 and 2.6.

lspci -v
00:0f.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
Flags: bus master, medium devsel, latency 64, IRQ 11
I/O ports at 1000 [size=256]
Memory at f4000000 (32-bit, non-prefetchable) [size=256]

Module Size Used by
8139too 27329 0
mii 5313 1 8139too