I saw a thread about this topic over in Motherboards and thought I might bring it over here because I am equally, if not more, confused than the originator that brought it up.
The question is that of memory on certain consumer boards. Very rarely do I see or hear about anyone running more than 2 sticks of memory (DIMMS, not SIMMs, because, well, that's obvious). I have tried it on my board (Iwill DVD266-R, but it has problems of its own) and it doesn't seem to work. Neither does it on a lot of boards. Perhaps this has to do with the type of memory.
It's been mentioned that certain chipsets and specifications only allow certain numbers of cycles, and unbuffered memory takes two cycles, while registered memory only takes one. Therefore, with registered memory, the amount of DIMM slots you can fill increases, as you just simply have more....cycles to take up.
Continuing...registered sticks basically add a register to the chips, so this process delays the processing by a clock cycle, but it prevents all sorts of memory problems. So, without problems, is the speed decreased (extra clock cycle)?
About CAS2 and CAS2.5 memory (I'm directing this towards DDR). Some motherboards allow the user to force CAS2 latency on 2.5 memory, but what does this do to stability, and more importantly is, can one run mixed modules of CAS2 and CAS2.5 (forced to CAS2) on a motherboard at all?
All the memory boggles the mind.
So the questions:
- Do the use of unbuffered memory decrease the number of availible mem slots you can actually use (depending on the chipset, of course)?
- Can one force CAS2.5 running at CAS2 to run in a stable fashion?
- Can one mix memory modules of CAS2 and CAS2.5 when CAS2 latency is forced?
- How does the performance of Registered memory compare to that of Unbuffered?
Happy pondering.
The question is that of memory on certain consumer boards. Very rarely do I see or hear about anyone running more than 2 sticks of memory (DIMMS, not SIMMs, because, well, that's obvious). I have tried it on my board (Iwill DVD266-R, but it has problems of its own) and it doesn't seem to work. Neither does it on a lot of boards. Perhaps this has to do with the type of memory.
It's been mentioned that certain chipsets and specifications only allow certain numbers of cycles, and unbuffered memory takes two cycles, while registered memory only takes one. Therefore, with registered memory, the amount of DIMM slots you can fill increases, as you just simply have more....cycles to take up.
Continuing...registered sticks basically add a register to the chips, so this process delays the processing by a clock cycle, but it prevents all sorts of memory problems. So, without problems, is the speed decreased (extra clock cycle)?
About CAS2 and CAS2.5 memory (I'm directing this towards DDR). Some motherboards allow the user to force CAS2 latency on 2.5 memory, but what does this do to stability, and more importantly is, can one run mixed modules of CAS2 and CAS2.5 (forced to CAS2) on a motherboard at all?
All the memory boggles the mind.
So the questions:
- Do the use of unbuffered memory decrease the number of availible mem slots you can actually use (depending on the chipset, of course)?
- Can one force CAS2.5 running at CAS2 to run in a stable fashion?
- Can one mix memory modules of CAS2 and CAS2.5 when CAS2 latency is forced?
- How does the performance of Registered memory compare to that of Unbuffered?
Happy pondering.
