Timeline for I bought "ECC" ram for my MacPro1,1 but system reports only shows FB-DIMM
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| May 15, 2018 at 15:50 | comment | added | user71659 | No, I understand completely. Only FB-DIMMs always have the "functionality" of ECC, because of their unique architecture. FB-DIMMs are completely different from any other memory bus. Any other non-ECC platform is missing the bus wires (DIMM pin count) and controller hardware for ECC, regardless of registration or buffering. Kingston is nitpicking one specific obsolete memory architecture by mentioning an ill-defined "functionality". The Wikipedia quote is 100% correct. | |
| May 15, 2018 at 12:07 | comment | added | Allan | @user71659 - I don't think you read/understood the FAQ I linked clearly. You just repeated what it said. | |
| May 15, 2018 at 5:13 | comment | added | user71659 | No, the OP is correct. Buffered/registered means there's a chip(s) in the data or command path that regenerates the signal between the DRAM and the motherboard. ECC means the memory returns 72 bits per address instead of 64 bits. Those are independent functions. (The confusing wording that Kingston uses is a quirk specific to FB-DIMMs; the AMB serializes all data, so the bus always has the capability to handle ECC bits. Registered RAM doesn't care about ECC, Buffered RAM just requires one extra buffer chip for the added width) | |
| May 14, 2018 at 22:17 | history | edited | Allan | CC BY-SA 4.0 |
deleted 1 character in body
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| May 10, 2018 at 15:26 | history | edited | Allan | CC BY-SA 4.0 |
Added more details.
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| May 10, 2018 at 15:15 | history | answered | Allan | CC BY-SA 4.0 |