| Author |
Needing urgent help with RAMBUS
|
|
| pmb2k 2003-12-25, 10:34 am |
| Hi guys
Hope someone out here can help me with Rambus memory.
I had originally 2 strips of 64mb rambus pc800 memory inside pc, also it had 2 continuinity modules (blank modules). I recently bought 2 strips of 256mb pc800 rambuss non ecc and are obviously exactly the same as each other.
After trying to upgrade the memory, ive tried various swap methods on the motherboard, even updating the BIOS as it stated some problems occurred with Intel 850 motherboards whilst upgrading rd ram. But still no joy on getting the memory to work whether it be all together, with the blank modules in or memory on its own?
When i put the original strips back in with the blank modules , guess what IT WORKS!!!!
Great eh, NOT! im confused and rather upset after spending what was a xmas pressie as well, dont know whether anyone can help or not but its driving me INSANE | |
| azimuth40 2003-12-26, 4:20 pm |
| I was going to answer this but I see that you already hit the newsgroups and found out that your problem is most likely the form factor of the indivdual chips and nor really problems with the RIMM's It is the old single sided versus double sided issue from SDRAM all over again. Since rambus is byte serial it is even more finicky. That is why when rambus first gained popularity most techies advised people to buy all that you thought you would need as soon as possible.
Hope you are up now or soon and your present is not wasted. | |
|
| I aint further forward just to let u know, i have asked many forums and most people have given me advice which i have already done, someone reckons by clearing the CMOS after updating the BIOS might help too which i havent done yet, any thoughts on this? | |
| azimuth40 2003-12-27, 1:11 pm |
| The last time that I updated BIOS was on a pair of Soyo Dragons and the instructions specifically said that CMOS must be cleared after the update via jumper. Then they came out with a new flash program the does it automatically after the update by giving it a CRC error. So I guess it can't hurt but it probably depends on the motherboard. | |
|
| Hi again
I did remove the CMOS battery earlier today and guess what it still hasnt mad a difference, so im well n truly guttered. One guy from another forum reckons by making sure i have the rambus in the right places on the motherboard, but ive tried all various positions that u can possibly try n still nothing. Updated my BIOS from Intels website, still nothing
Some websites refer to using only the memory that are listed on their websites reffering to my motherboard which this memory isnt listed for, so very well could be a compatability problem but still not convinced
Im thinkin of sending memory back to website i got it from to get it tested just incase it is faulty....
Ive got a P4 1.7ghz Intel 850gb motherboard, 4slots for RDRam only. Im pretty sure i have the right memory though, its SyncMAX 256mb RDRAM PC800 non ECC and has got 256mb/8 on the chip | |
| azimuth40 2003-12-27, 5:51 pm |
| Well syncmax does not specifically say anything about the 850 on their website but they do hit the 845 with this
quote:
Tech. Support :
1 .Why doesn't my computer boot up after I install your 256MB DDR module (with 16M X 16 chips) on the Intel 845G or 845GL chipset motherboard?
answer: intel 845g and 845gl are not compatible with a 256mb ddr memory module that made with 8 pieces of 16m x 16 ddr chips.
click below for more detail.
http://developer.intel.com/design/m...d/ad/ad_mem.htm
However http://www.syncmax.com/page22.asp says that all the 256MB-800 that they make 16 or 8 chip will work in the intel D850GB motherboard. Apparently all the newsgroup info that you received about chip count and from me too is wrong. I wasn't that familiar with the 850 spec's until today. So it looks like you have bad memory or a bad motherboard chipset. When you removed the battery you did get a CRC error right?
I was looking at intels manual for your board and it has diagnostic leds on the back to tell you where it hung if it does not beep. It looks like double amber is the memory section if you get no beep codes.
If you are missing your manual it is here.
ftp://download.intel.com/support/mo.../GB_English.pdf
I hate cr@p like this. What should be a pleasurable holiday playing with your new upgrade is spent in limbo. Keep us posted OK. | |
|
| Wow some useful info there mate thanks very much! When i did the CMOS thing i didnt get a CRC error though, does that mean ive done something wrong? | |
| azimuth40 2003-12-27, 6:45 pm |
| quote:
Originally posted by pmb2k
Wow some useful info there mate thanks very much! When i did the CMOS thing i didnt get a CRC error though, does that mean ive done something wrong?
No exactly opposite. That is the indication that you left the battery out long enough. There is a slight charge in the circuits to give you enough time to quickly change the battery without losing the settings. If you leave the battery out long enough then you will get a CRC error.
Glad the info was useful, at least we are now moving away slightly from pure speculation.  | |
|
| Is there any chance u could email me that pdf file for my motherboard as its just coming up with the message sayin that the page cannot be found | |
|
| Hang on mate its ok ive got it now, so thanks anyway | |
| azimuth40 2003-12-27, 7:09 pm |
| "ftp://download.intel.com/support/motherboards/desktop/D850GB/GB_English.pdf"
I just tried it again and it came through. otherwise send me a PM with your email address | |
| azimuth40 2003-12-27, 7:11 pm |
| Ok good luck | |
| DaDnDe 2003-12-28, 2:11 am |
| quote:
Originally posted by pmb2k
Hi again
I did remove the CMOS battery earlier today and guess what it still hasnt mad a difference
you removed the battery, for how long?
did you short the pos. contact to ground also?? if not, then that may be your problem.
removing the battery will not reset the cmos because there are several capacitors that will maintain power for sometimes several days (most will discharge in a couple hours) most newer boards (at least mine has it)dont require you to disconnect the battery, only to move a jumper near the battery to the other position for about 5-15 secs(there is usually a jumper in the 1-2 position for normal operation and the 2-3 position is for resets)
also they recommend that you disable all the caches first. this includes the L-2 cache, bios, and video, etc... | |
| azimuth40 2003-12-28, 9:30 am |
| Ahh but this is intel that we are talking about, nothing about their motherboards follow the norm, never have. Unless I missed it I saw no jumper for that but a three position jumper that has to do with configuration and passwords. I am suprised that they are using jumpers now, normally they use dip switches. That is why I clued him into the 4 POST code LED's | |
| DaDnDe 2003-12-28, 4:06 pm |
| that is why i am a fan of intel chipsets but not intel mb's.
they are more expensive
they cannot be overclocked easily
my new board is an Asus P4P-800 pro. it has dual bios chips, so resetting the bios for anything is not necessary.
but it is obvious that this isnt an intel board. it has a memory clock and processor bus that can be incremented in one mhz chunks.
talking bios for people who dont want to learn beep codes.
integrated wi-fi, gb lan, dual lan, 2-1394, 8 usb 2, ide-RAID, sata with 150mb transfer speed(supposedly) 6.1 audio,agp 8x, oh did i mention built-in over clocking???
i mean this board rocks...
but anyway... with the board thing. on my P-3 board, it says to short the pins for 5-15 sec to insure that all the caps are completely drained. also to disable all the caching also. (i dont know why they ask this, i assume the system is powered off thus eliminating any caching situation) |
|
|
|