5 Replies Latest reply on Sep 16, 2009 3:39 PM by JohnS

    CPU Codes?


      Reposted for Brickstin by Admin

      Created on: Aug 9, 2009 8:12 AM by Brickstin - Last Modified:  Aug 9, 2009 8:17 AM by Brickstin
      Ive noticed on some Processor Names it says Letters at the end of the GHhz.. Speeds.. like example

        • 1. Re: CPU Codes?

          Do you have an example? I am not sure what your question is.


          John S.

          • 2. Re: CPU Codes?

            Ok now I am upset.. Mark.. I am upset because you practically cut off the rest of my entire question .. I had examples and URLS that lead to what needed to be explained and I needed this done by Friday and now Its today and I checked the boards after a horrible virus infection I had to battle in my IBM Server...



            I finaly get it up and running and check here to see if my question is answered.. Ok >Granted I appretiate that you relocated it ..but you cut off the entire Question so of course.. THey are going to be like "Can you give me an example?"


            I don't even remember were I got the examples from..


            I have to find the stupid COde sheet again on Intel.com... WHich is going to be a pain in the major ****..



            For the Love of God.. I have to .. Here.. These are some examples.. I really wanted answers to the processor Partaining to the one I want to buy and I have to find it all over again.. But here is a few examples of what they look like.. it has the Letters like 3EGHrz



            http://processorfinder.intel.com/details.aspx?sSpec=SL79L  CPU Speed 3E GHz












            http://processorfinder.intel.com/details.aspx?sSpec=SL7KC <--- states 3.20E Ghz  and only one listed supported feature. HTing


            What does this "E"s stand for!?


            http://processorfinder.intel.com/details.aspx?sSpec=SL7D8 <--- has the Code Letter "A" in it.. 2.80A GHz What does that mean.. were can I find a listing of those Codes?


            http://processorfinder.intel.com/details.aspx?sSpec=SL6DV Code Letter "B"


            I need to know what "A", "B", "E",


            Each one needs to be defined... But I am more concerned about the E Code.


            because one of the processors I am looking at has that Code Letter E and it is way Cheaper then the one with out it.. I am looking at a 3.0 GHz Speed processor and the one with the E is 19 dollars cheaper then the one WITH out the E.


            I Think its this one that is more expensive: http://processorfinder.intel.com/details.aspx?sSpec=SL7L4 <-- That has no E in it

            http://processorfinder.intel.com/details.aspx?sSpec=SL7KB <--- That one has the letter E in it.. and its the same speed. Thats the one that is way cheaper.


            I hope this was enough information to help anyone.. Please I desperately need the answers. I needed this by Friday and I was able to work with my client who hired me to fix her PC.


            And upgrade it... Again I know allot about computers.. But im kinda old fashioned a little; I am like a guy who knows allot about Cars : I can fix them and everything but I am more vintage when it comes to that stuff, I can work on a 1967 Stingray and fix it all up but I can't do to well in fixing a 2000 Chevy Truck with a crap load of electronics and codes and computers having to read CODES from the Dianostic Computer. I need to learn these codes.. so please someone help..


            In Hope... ,



            Message was edited by: Brickstin

            • 3. Re: CPU Codes?

              Hi Erick,

              Not sure what happened to the rest of the post. I am sorry for cutting it off.

              • 4. Re: CPU Codes?

                I'm supprised no one answered anything ._.   



                I comepletely forgot about this post >_>;

                • 5. Re: CPU Codes?

                  We used to have a knowledgebase article on this topic, but it's been archived. The reason there are letter codes after a given processor speed is that there may be an identicle speed for that same processor brand name - but from a different process technology (90nm, 65nm ...etc). The CPU (MHz) speed may be the same, but the cache size or bus speed may be different. It's what marketing does when you have 3-4 Pentium 4 processors at the same speed. I would imagine this adding of letters (A, B, E ...etc) was supposed to minimize confusion.


                  What do the letters after the processor speed mean?

                  Intel® Pentium® 4 processors that share the same core speed in GHz may have different product features. In cases where different processors exist at a single speed, letter designators are added to the processor core speed. Distinguishing features include the size of the L2 Advanced Transfer Cache, the speed of the front side bus, and the type of manufacturing process used.


                  'A' designator:
                  This letter designator identifies Pentium 4 processors with 512KB full speed L2 Advanced Transfer Cache. For example, the Pentium 4 processor at 2 GHz has 256KB L2 cache while the Pentium 4 processor at 2A GHz has 512KB L2 cache.


                  'B' designator:
                  This letter designator identifies Pentium 4 processors that support a 533 MHz front side bus speed. For example, the Pentium 4 processor at 2.40 GHz supports a 400 MHz bus speed and the Pentium 4 processor at 2.40B GHz supports a 533 MHz bus speed.


                  'C' designator:
                  This letter designator identifies Pentium® 4 processors that support Hyper-Threading Technology and an 800 MHz front side bus. For example, the Pentium® 4 processor at 2.40C GHz supports an 800 MHz front side bus and Hyper-Threading Technology1.


                  Note The letter 'D' is not used at this time.


                  'E' designator:
                  This letter designator identifies Pentium® 4 processors that are manufactured using the 90 nanometer process with 1MB L2 Advanced Transfer Cache.



                  One exception is the Pentium® 4 processor at 2.80A GHz. In this case the 'A' designator indicates a Pentium® 4 processor at 2.80 GHz with 1 MB L2 cache, 533Mhz front side bus built using 90 nanometer process. This processor does not support Hyper-Threading Technology1.


                  No designator:
                  If no letter designator is present, then there is no overlap in process technology or front side bus speed at that processor core speed. For example, all Pentium 4 processors at 3.06 GHz are built using the 0.13 micron process technology and support a 533 MHz bus speed; therefore, no letter designator is indicated.


                  Check out the folowing informatin from a different forum: http://www.computing.net/answers/cpus/320e-does-the-e-do/13175.html. It has another explanation on the processor "E" code.


                  John S.
                  Intel Customer Support
                  *Other names and brands may be claimed as the property of others


                  Message was edited by: JohnS