Simpler Navigation for Servers and Operating Systems - Please Update Your Bookmarks
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
If you have bookmarked forums or discussion boards in Servers and Operating Systems, we suggest you check and update them as needed.
BladeSystem Server Blades
Showing results for 
Search instead for 
Did you mean: 

BL460G6 / Disabling Cores & Turbo Boost

Trusted Contributor

BL460G6 / Disabling Cores & Turbo Boost

Scott was looking to disable some cores in a BL460 G6 blade that had a 6-core processor:



Customer looking to purchase BL460G6 blades with 2 X5670 6-core at 2.93 GHz per core.  Can they use RBSU to disable 2 cores and run the remaining cores at 3.0+ GHz per core?  The RBSU users guide I am looking at gives options for enabling all, one, or half???   …6/2 = 3 cores…  Is there an updated RBSU that offers enabling 4 of 6 cores per proc?  Will setting up BIOS in this fashion give the desired result of 4 cores per proc at > 3.0 GHz per core?


Dan provided the answer:


They can’t use RBSU to disable 2 cores on a 6-core X5670 processor.    RBSU gives the same three options, whether it’s on a 4-core or 6-core processor: All cores enabled, half of the cores enabled, 1 core enabled. 


Disabling cores does change the maximum potential frequency that the remaining cores can achieve, but it doesn’t guarantee they’ll run at those max speeds; it just increases the odds that they could.



Do you run processors with less than all the cores active? Can you tell us the application and results you have seen?