tag:blogger.com,1999:blog-5976686513564131325.post2793944314403810355..comments2024-03-17T15:34:05.492-06:00Comments on MPECS Inc. Blog: Answer the Intel Xeon Questions & Win an Intel Boxed E6750Philip Elder Cluster MVPhttp://www.blogger.com/profile/06082028960643490292noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5976686513564131325.post-64049925792679147852008-03-11T10:05:00.000-06:002008-03-11T10:05:00.000-06:00Chris,One of the Intel Call Jockeys that I spoke t...Chris,<BR/><BR/>One of the Intel Call Jockeys that I spoke to indicated that the "X" means an unlocked multiplier.<BR/><BR/>The subsequent call jockeys denied that.<BR/><BR/>Unfortunately, we are not in the position where we can experiment with that at the moment. ;)<BR/><BR/>However, it would make sense for those putting together a performance oriented box for 3D crunching, video editing and rendering, and the like to have the ability to clock up.<BR/><BR/>More power for them means less time per job.<BR/><BR/>Thanks for the comment.<BR/><BR/>PhilipPhilip Elder Cluster MVPhttps://www.blogger.com/profile/06082028960643490292noreply@blogger.comtag:blogger.com,1999:blog-5976686513564131325.post-29444194333846464842008-03-08T20:58:00.000-07:002008-03-08T20:58:00.000-07:00The X, E and L designators are used for performanc...The X, E and L designators are used for performance, standard and low-power models.<BR/><BR/>On the face of it, there's not much difference between an X-series Xeon and an E-series Xeon, apart from TDP.<BR/><BR/>Intel use TDP to tell system builders how much heat they need to shift away from the CPU to have it functioning correctly. A higher TDP means that the processor is potentially going to output more heat. What does this mean for the difference between an X-series Xeon and an E-series Xeon? Well, it means that an X-series Xeon most likely has an unlocked clock multiplier and can hence be overclocked to a higher rate, so long as the system builder is able to dissipate heat based on the TDP rating.<BR/><BR/>In summary, higher TDP == higher overclocking speeds (while retaining stability).<BR/><BR/>References:<BR/><A HREF="http://en.wikipedia.org/wiki/Xeon#5400-series_Harpertown_and_5200-series_Wolfdale" REL="nofollow">Wikipedia - Xeon 5200-series</A><BR/><A HREF="http://en.wikipedia.org/wiki/Thermal_design_power" REL="nofollow">Wikipedia - TDP</A>": Thermal Design Power<BR/><A HREF="http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3184&p=2" REL="nofollow">AnandTech - QX9650 Overclocking</A>: An example of TDP and how it relates to overclockingstryqxhttps://www.blogger.com/profile/11725668205462749500noreply@blogger.com