https://community.hpe.com/t5/alpha-servers/es45-server/m-p/418086#M46 Hi Jaser,<BR /><BR />As far as I can find out right now the 21264C variant of the EV68 is only a 1000MHz CPU with 8MB cache. While the 21264D is the speed up for the EV68 to 1250MHz with 16MB cache. <BR /><BR />I have better documentation at work and i can give you a better explanation when I go back to work on Tuesday.<BR /><BR /> Sat, 28 Aug 2004 15:38:36 GMT CA1130938 2004-08-28T15:38:36Z https://community.hpe.com/t5/alpha-servers/es45-server/m-p/418085#M45 we have already bought ES45 Server which must be 21264D 68/1250 MHz but when we check the cpu through the operating system tru64 unix we found that the CPU is 21264C 68/1250 MHz and when we tried to check the diffirence between the two processors through HP site the internet we didn't find 21264C 68/1250 MHz processor and instead we found 21264C 68/1000 MHz so that is there is any ES45 servers whith 21264C 68/1250 MHz processor and if there is a such processor which is better 21264C 68/1250 MHz or 21264D 68/1250MHz Mon, 23 Aug 2004 00:38:24 GMT https://community.hpe.com/t5/alpha-servers/es45-server/m-p/418085#M45 CA1171575 2004-08-23T00:38:24Z https://community.hpe.com/t5/alpha-servers/es45-server/m-p/418086#M46 Hi Jaser,<BR /><BR />As far as I can find out right now the 21264C variant of the EV68 is only a 1000MHz CPU with 8MB cache. While the 21264D is the speed up for the EV68 to 1250MHz with 16MB cache. <BR /><BR />I have better documentation at work and i can give you a better explanation when I go back to work on Tuesday.<BR /><BR /> Sat, 28 Aug 2004 15:38:36 GMT https://community.hpe.com/t5/alpha-servers/es45-server/m-p/418086#M46 CA1130938 2004-08-28T15:38:36Z