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#1
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Such a thing as 2nd generation PC133 SDRAM Memory?
Reason I ask is because I just bought a 256MB PC133 chip off Ebay and it
is only registering as 128 on my system. Just to test I took out my existing chips and just put the new one in and it still just registers at 128MB. Emailed the person that sold it to me and he said chip is only 4 months old and is 2nd generation memory. Only newer motherboards will see it as 256, older ones see it as 128MB. I have an Athlon 700 with the possible maximum memory at 784MB. I had 384MB with one 128MB and one 256MB on the system. I just want to know if what he says can be true and if it is how can I tell the difference on memory chips to get the correct one for my system. Thanks, Oscar |
#2
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Yes, he is correct. Your board seems unable
to handle the newer higher density memory. Go to crucial.com and get the proper memory for your motherboard. They guarantee it will work correctly. "Oscar G. Carranza" wrote in message ... Reason I ask is because I just bought a 256MB PC133 chip off Ebay and it is only registering as 128 on my system. Just to test I took out my existing chips and just put the new one in and it still just registers at 128MB. Emailed the person that sold it to me and he said chip is only 4 months old and is 2nd generation memory. Only newer motherboards will see it as 256, older ones see it as 128MB. I have an Athlon 700 with the possible maximum memory at 784MB. I had 384MB with one 128MB and one 256MB on the system. I just want to know if what he says can be true and if it is how can I tell the difference on memory chips to get the correct one for my system. Thanks, Oscar |
#3
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"Oscar G. Carranza" wrote in message
... Reason I ask is because I just bought a 256MB PC133 chip off Ebay and it is only registering as 128 on my system. Just to test I took out my existing chips and just put the new one in and it still just registers at 128MB. Emailed the person that sold it to me and he said chip is only 4 months old and is 2nd generation memory. Only newer motherboards will see it as 256, older ones see it as 128MB. I have an Athlon 700 with the possible maximum memory at 784MB. I had 384MB with one 128MB and one 256MB on the system. I just want to know if what he says can be true and if it is how can I tell the difference on memory chips to get the correct one for my system. Yes, the older technology used 16MB chips and the newer 32MB chips. So if your 256MB DIMM contains 8 chips (9 for ECC) then its of the newer type (sales people call them high density). If it contains 16 chips (18 for ECC) then its of the older type that works on most mobos. |
#4
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I'm sorry to say that you've been had. See if he'll refund your money.
-- DaveW "Oscar G. Carranza" wrote in message ... Reason I ask is because I just bought a 256MB PC133 chip off Ebay and it is only registering as 128 on my system. Just to test I took out my existing chips and just put the new one in and it still just registers at 128MB. Emailed the person that sold it to me and he said chip is only 4 months old and is 2nd generation memory. Only newer motherboards will see it as 256, older ones see it as 128MB. I have an Athlon 700 with the possible maximum memory at 784MB. I had 384MB with one 128MB and one 256MB on the system. I just want to know if what he says can be true and if it is how can I tell the difference on memory chips to get the correct one for my system. Thanks, Oscar |
#5
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Actually it is quite possibly true, older boards won't recognise all the
memory on some newer dimms, they are configured differently ( higher density chips I believe?) and this is exactly what happens, the 256 meg dimms appear as 128. -- Mikey http://www.mike721.com "DaveW" wrote in message news:SB9zb.398765$HS4.3215055@attbi_s01... I'm sorry to say that you've been had. See if he'll refund your money. -- DaveW "Oscar G. Carranza" wrote in message ... Reason I ask is because I just bought a 256MB PC133 chip off Ebay and it is only registering as 128 on my system. Just to test I took out my existing chips and just put the new one in and it still just registers at 128MB. Emailed the person that sold it to me and he said chip is only 4 months old and is 2nd generation memory. Only newer motherboards will see it as 256, older ones see it as 128MB. I have an Athlon 700 with the possible maximum memory at 784MB. I had 384MB with one 128MB and one 256MB on the system. I just want to know if what he says can be true and if it is how can I tell the difference on memory chips to get the correct one for my system. Thanks, Oscar |
#6
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Oscar G. Carranza wrote in message ...
I just bought a 256MB PC133 chip off Ebay and it is only registering as 128 on my system. Emailed the person that sold it to me and he said chip is only 4 months old and is 2nd generation memory. Only newer motherboards will see it as 256, older ones see it as 128MB. I have an Athlon 700 with the possible maximum memory at 784MB. I had 384MB with one 128MB and one 256MB on the system. I don't know about your mobo, but if the mobo was made for PC100 memory, you need PC133 that's also rated for PC100, and few of it is any more. Some companies, like Crucial, Centon (Circuit City), and Kingston make distinctions between PC133-only and PC133/PC100 modules, but others, like PNY/CompUSA and K-byte, do not, and you don't know what you'll get with them. It's not enough for a 256MB module to have at least 16 chips on it because some will still register as only 128MB with older PC100 mobos, like those based on the Intel 440BX or Socket 7 chipsets. With them it's also necessary for the chips to "span" no more than 16M x N, i.e., be 16M x 8, because when I tried a 16-chip 256MB module containing 32M x 4 chips, only 128MB of it was recognized, except with my Intel 810-based mobo, which also sees only the first 128MB of 8-chip 256MB modules (and can't use 512MB modules to their full capacity). |
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