http://www.serverwatch.com/hreviews/article.php/3463361
TCP test
That server was equipped with Red Hat Enterprise Linux AS 3 and Oracle's 10g Standard Edition. This machine delivered a price/performance of $3.94 per TPM. That performance is slightly better than for eight-way Xeon MP servers running Windows Server 2003 and delivering about the same bang for the buck at the network-level pricing that the TPC-C test uses.