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4answers
14k views

Difference between DDR3 SDRAM and DDR3 SODIMM for laptop

I have an ASUS A55VD-NS51 laptop with 6GB of RAM and I've been wanting to upgrade the memory for a while. I've finally decided to go through with it, but I am unsure as to whether to buy DDR3 SDRAM or ...
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1answer
32 views

My RAMs shrunk with no apparent damage. 8gb to 4gb on both rams.

My computer recently started rebooting randomly, or whenever there's a bit of shock on the table. I thought probably one of the slots are loose. And I found on my OS that my 8 x 2 = 16GB RAM was ...
4
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2answers
163 views

why are RAM chips independent of whether my system is a 32bit system or 64 bit system?

I was recently out to buy a 4 GB RAM chip for my laptop, and all they asked me was whether I wanted DDR-3? When I specified that I had a 64 bit system, they said that it's not important, my question ...
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0answers
30 views

Sdram Cas Latency

Between the cpu and sdram communication, how does cpu know how many cycles to wait for response from memory(sdram)? I mean they both use fsb clock for communication so the communication is ...
2
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0answers
207 views

Asus P4B SDRAM Upgrade

I have to fix a PC for a friend - and - bought RAM because 256 MB SDRAM PC133 is not enough for WinXP. I bought 2x 512 MB SDRAM PC133. If I insert one stick, it doesn't matter which one, the PC won't ...
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1answer
600 views

Combining multiple DIMMs in one memory channel

Every electronics engeneer knows that connecting more chips on the same line increases its capasistence and, thus, degrades the frequency. So, memory speed must be dependent on the number of chips in ...
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2answers
761 views

Is Asus G51J compatible with 4GB DDR3 1066MHz SDRAM memories?

Is it possible to install one or more 4GB DDR3 1066MHz SDRAM in an Asus G51J? My Asus G51J has 8GB (4x2GB) and I'd like to upgrade to 4x4GB (16GB).
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2answers
428 views

Upgrading RAM in HP Compaq d530

I want to upgrade my hp compaq d530 from 1.2GB to 4GB of RAM. I look at the specs: http://h18000.www1.hp.com/products/quickspecs/11632_ca/11632_ca.html and saw that I could get up to 4GB of RAM that ...
2
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2answers
145 views

Can I buy an ECC SDRAM, or do I have to buy non-ECC SDRAM?

I'm helping a relative of mine with computer maintenance. She has a Compaq Presario 5000 (10yrs old) and it's slow. My first thing was to look at the memory -- it has only 512MB, but its maximum ...
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1answer
2k views

Is PC4200 DDR2 compatible with PC3200 DDR?

I picked up some DDR2 5300 that was on sale, and found that it would not physically fit on my motherboard. Now I've found some PC2 4200 RAM on the internet for the price I want. My motherboard takes ...
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2answers
930 views

Synchronous vs. Asynchronous DRAM

I have simple question, why do we use in computers today synchronous memory? Is there some advantage over asynchronous?
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2answers
172 views

Which PC100 SDRAM is compatible with iMac?

I've recently acquired an aging iMac (G3/500 DV SE, Summer 2000) with its original 128Mb RAM out of a possible 1Gb. I'd like to replace the single 128Mb DIMM with 2 x 512Mb DIMMs. I know these need to ...