We have produced the following currently publicly available reports for Red Hat, Inc.

SPEC CPU2006 SPECfp_rate_base performance on Red Hat Enterprise Linux 5.1 and 3 AS Intel-based servers We tested three servers: a Red Hat Enterprise Linux AS 3 server on a Dual-Core Intel Xeon processor 7140M-based (3.4 GHz) server, a Red Hat Enterprise Linux AS 3 guest on Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server, and a Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server.

SPECjbb2005 performance on Red Hat Enterprise Linux 5.1 and 3 AS Intel-based servers We tested three servers: a Red Hat Enterprise Linux AS 3 server on a Dual-Core Intel Xeon processor 7140M-based (3.4 GHz) server, a Red Hat Enterprise Linux AS 3 guest on Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server, and a Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server.

SPEC CPU2006 SPECint_rate_base performance on Red Hat Enterprise Linux 5.1 and 3 AS Intel-based servers We tested three servers: a Red Hat Enterprise Linux AS 3 server on a Dual-Core Intel Xeon processor 7140M-based (3.4 GHz) server, a Red Hat Enterprise Linux AS 3 guest on Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server, and a Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server.

Linpack performance on Red Hat Enterprise Linux 5.1 and 3 AS Intel-based servers  We tested three servers: a Red Hat Enterprise Linux AS 3 server on a Dual-Core Intel Xeon processor 7140M-based (3.4 GHz) server, a Red Hat Enterprise Linux AS 3 guest on Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server, and a Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server.

We gave the following presentation at Fall IDF in San Francisco on September 19, 2007:

Comparative performance test Red Hat Enterprise Linux 5.1 and Red Hat Enterprise Linux 3 AS on Intel-based servers Red Hat, Inc. and Intel Corp. commissioned us to compare the performance of three servers, a Red Hat Enterprise Linux AS 3 server on a Dual-Core Intel Xeon processor 7140M-based (3.4 GHz) server, a Red Hat Enterprise Linux AS 3 guest on Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server, and a Red Hat Enterprise Linux 5.1 server on a Quad-Core Intel Xeon processor X7350-based (2.93 GHz) server on three different workloads. This presentation, which we gave at Fall IDF in San Francisco on September 19, 2007, summarizes our findings.

We had previously published four reports comparing the performance of a Red Hat Enterprise Linux 5 Intel processor-based system and a Sun Solaris 10 AMD processor-based system. Sun required us to remove those reports.