Proper server sizing for SPARC/Solaris to Intel/R migrations

Is there any collateral available concerning proper server sizing for customers migrating from SPARC/Solaris to Intel/RHEL? I was just asked by our account team that is working with a very large custormer in the pharma space.
My initial knee jerk was to refer them to the OEM but thought I'd look around in these forums first.
My searches have not returned any good results yet.

Hi Mike
the public SAP SD-Benchmark homepage ([http://www.sap.com/benchmark/|http://www.sap.com/benchmark/] -> SD two-tier results) gives interesting but very indirect sizing hints. There are several SAP SD-Benchmarks on SPARC/Solaris. I picked some of them:
[2008075|http://download.sap.com/download.epd?context=B1FEF26EB0CC3466320983FEDBEB2A47615DC8F24866B0B6870E95AA3589B515566F7A57D98961BB]: 24650 SD-User w SAP ERP 6.0 (2005 Non-Unicode) on SPARC Enterprise Server M9000 (32CPUs)
[2008062|http://download.sap.com/download.epd?context=40E2D9D5E00EEF7C974D9FC4D21DA80E794CB437BC196262799B27A2BB01B9D6]: 825 SD-User w SAP ERP 6.0 (2005 Non-Unicode) on SPARC Enterprise Server M3000 (1CPU)
[2008058|http://download.sap.com/download.epd?context=40E2D9D5E00EEF7CB82813BD3F95797BAEB80527B36EC026E03386D659E4DE48]: 7520 SD-User w SAP ERP 6.0 (2005 Non-Unicode) on SPARC Enterprise T5440 (4CPUs)
You'll probably have the hardware setup of your customer together with the system utilization. Check it with the Solaris/SPARC benchmarks on the public page and check for Intel Benchmarks as well. Make sure, that the SAP release is the same (with 2009 a new SAP release is mandatory for benchmarks -> numbers are not comparable to 100%).
Thanks,
Hannes

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EdStevens wrote:
Justin Mungal wrote:
EdStevens wrote:
user1970505 wrote:
Hi All,
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