Solved: Pavilion a1120n memory upgrade, DDR Vs DDR2.

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Eastwood

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Jan 5, 2006
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I really used to be up on the latest and greatest thing in personal computers. It’s easy to get behind. So I learned the hard way that DDR 184 pin memory won’t work in a DDR2 240 pin slot. Oh it will fit into the slot with much persuasion but it won’t work.

I have an HP Pavilion a1120n Media Center PC. It has 4 (2 banks of 2) memory slots. 2 blue slots and 2 black slots. My PC came with 2 256 MB PC-2 3200 DDR SDRAM memory (it says that on the label on the front of the machine). Apparently the PC-2 is what I ignored from the start. I think that was the clue that I missed, telling me that I should have ordered DDR2 memory, which has 240 pins. 120 pins on each side.

I ordered the suggested memory upgrade kit from hpshopping.com. The 184 pin DDR memory that they sent to me looked like the memory I had in my Pavilion. After some very sore thumbs the memory did go into the slot, but when I turned the computer on, it would not start up. After 4 calls to HP, I still did not understand what was going on. After searching the Web, I was thinking that maybe I did have DDR2 memory in my machine. At a loss, I turned my Pavilion off, grounded myself, pulled one of my DIMMs out and counted the pins on the front of my memory. Sure enough I counted 120 pins. Even on the phone with HP they kept suggesting the 184 pin memory. I did call them back and told them that I counted 120 pins on my memory and the technician did not know what that meant.

At any rate, I’m glad my Media Center PC has DDR2 memory in it. I did find a great site for finding answers to my memory questions. http://www.crucial.com/index.asp. When I went to this site, they knew much more than HP seemed to know about my Pavilion. I was very impressed that on a Saturday they had someone that I was able to instant message on their site and they answered my questions.

Old dogs like me can learn new tricks.:cool:

Dave
 
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