ladd & comer are essentially the same machine (1.6ghz atom vs 1.8ghz atom). the difference between the 8169 and the 82574 is 2x.
mikro 0.57u 0.20s 1.20r wc -l history rb450g ar71xx kw 0.26u 0.12s 0.77r wc -l history kirkwood marvell yukon-style ladd 0.05u 0.03s 1.01r wc -l history pc/atom 8169 comer 0.02u 0.01s 0.53r wc -l history pc/atom 82574 minooka 0.00u 0.00s 0.52r wc -l history pc 82598→82563 (gbe)* minooka 0.04u 0.00s 0.15r wc -l history pc 82598→myricom (10gbe) - erik * some measurement error due to the slow fs used for this test.