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RAMBUS MEMORY NOT REGISTERING -REPLY PLEASE! 1
- Thread starter kingkev
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Rambus is a relatively new memory technology. Most techs don't know much about it yet. Here are a few things I do know and some suggestions:
[ul][li]As you know, with the Intel 850 chipset used on Pentium 4 boards you must install the modules in pairs.[/li]
[li]Module pairs must be the same size and speed. ie. Both 128MB and both 800MHz.[/li]
[li]If you are installing only 2 modules you must also install 2 continuity RIMMs (sometimes called terminators). All memory slots must be filled.[/li]
[li]With Intel 820 chipset used on Pentium III boards the modules can be installed one at a time.[/li]
[li]You cannot mix ECC modules with non-ECC modules[/li][/ul]
Some things I have heard but cannot confirm:
[ul][li]You can mix 600MHz with 800MHz modules and the memory bus will run at the slower speed. I recommend that you only use 800MHz modules.[/li]
[li]Some motherboards have a problem when you mix single sided modules with double sided modules.[/li]
[li]Some motherboards have a problem using High Density chips. I recommend that you only use Regular Density chips (64Megabit or less) and don't mix single and double sided modules , unless your motherboard manufacturer specifically says otherwise.[/li]
[li]Rambus licences this technology to memory manufacturers so all modules must meet the same specs and therefore are compatible. Sounds logical, but who knows. I recommend that you use modules from the same manufacturer.[/li]
[li]Rambus modules have a lot of problems. I don't know about that but it is starting to look that way.[/li][/ul]
Are all the modules the same size? ie. 128MB
If you install each pair separately with continuity RIMMs does it work?
Try mixing and matching pairs. Do they all work together in pairs?
Contact Abit's tech support. They may be able to offer some insight.
You are on the bleeding edge of this technology so anything you can report will help others diagnose problems in the future.
Hope this helps. Keep us informed. Good luck.
John
[ul][li]As you know, with the Intel 850 chipset used on Pentium 4 boards you must install the modules in pairs.[/li]
[li]Module pairs must be the same size and speed. ie. Both 128MB and both 800MHz.[/li]
[li]If you are installing only 2 modules you must also install 2 continuity RIMMs (sometimes called terminators). All memory slots must be filled.[/li]
[li]With Intel 820 chipset used on Pentium III boards the modules can be installed one at a time.[/li]
[li]You cannot mix ECC modules with non-ECC modules[/li][/ul]
Some things I have heard but cannot confirm:
[ul][li]You can mix 600MHz with 800MHz modules and the memory bus will run at the slower speed. I recommend that you only use 800MHz modules.[/li]
[li]Some motherboards have a problem when you mix single sided modules with double sided modules.[/li]
[li]Some motherboards have a problem using High Density chips. I recommend that you only use Regular Density chips (64Megabit or less) and don't mix single and double sided modules , unless your motherboard manufacturer specifically says otherwise.[/li]
[li]Rambus licences this technology to memory manufacturers so all modules must meet the same specs and therefore are compatible. Sounds logical, but who knows. I recommend that you use modules from the same manufacturer.[/li]
[li]Rambus modules have a lot of problems. I don't know about that but it is starting to look that way.[/li][/ul]
Are all the modules the same size? ie. 128MB
If you install each pair separately with continuity RIMMs does it work?
Try mixing and matching pairs. Do they all work together in pairs?
Contact Abit's tech support. They may be able to offer some insight.
You are on the bleeding edge of this technology so anything you can report will help others diagnose problems in the future.
Hope this helps. Keep us informed. Good luck.
John
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- #5
I have tried mixin and matching already and i also tryed without any at all and theres non onboard!
2 sticks actually came with the motherboard (c-rimms) and they are no where near as thick as the rimms I got with the p4 proccessor maybe they arnt compatible but yet the ones i got with the mobo do not work alone (without the rimms purchased with the p4 proccessor)
im thinking mobo settings jumpers maybe?
2 sticks actually came with the motherboard (c-rimms) and they are no where near as thick as the rimms I got with the p4 proccessor maybe they arnt compatible but yet the ones i got with the mobo do not work alone (without the rimms purchased with the p4 proccessor)
im thinking mobo settings jumpers maybe?
Everything is perfectly clear now.
Do the RIMMs that came with the motherboard have any chips on them?
If not, these are the Continuity RIMMs. They are blank and are used to complete the curcuit for the memory bus.
If you have two 64MB RIMMs and two C-RIMMs then 128MB would be correct.
You can add more memory by replacing the C-RIMMS with two additional RIMMs up to 128MB each if you have Win98/ME.
Win98/ME are limited to 512MB total memory.
If you have Win2000 you can use two more modules up to 512MB each or 2GB total memory. Check you motherboard manual to be sure. That's why the manufacturer went to so much trouble printing it.
If you decide to use what you have the RIMM modules and C-RIMMs may need to be in specific slots. Read your motherboard manual.
If I didn't make all of this clear, read the motherboard manual.
Finally, if all else fails, read the motherboard manual.
Hope this helps. Good luck.
John
Do the RIMMs that came with the motherboard have any chips on them?
If not, these are the Continuity RIMMs. They are blank and are used to complete the curcuit for the memory bus.
If you have two 64MB RIMMs and two C-RIMMs then 128MB would be correct.
You can add more memory by replacing the C-RIMMS with two additional RIMMs up to 128MB each if you have Win98/ME.
Win98/ME are limited to 512MB total memory.
If you have Win2000 you can use two more modules up to 512MB each or 2GB total memory. Check you motherboard manual to be sure. That's why the manufacturer went to so much trouble printing it.
If you decide to use what you have the RIMM modules and C-RIMMs may need to be in specific slots. Read your motherboard manual.
If I didn't make all of this clear, read the motherboard manual.
Finally, if all else fails, read the motherboard manual.
Hope this helps. Good luck.
John
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