Questions tagged [sdram]

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2answers
53 views

Can I add 6GB RAM of these modules to my existing RAM config? [closed]

After a crash of my PC I decided to reinstall the machine with Windows 10. Everything is running fine, but I notice that the 6GB is a bit too tight for all the software I'm running. Since this is an ...
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0answers
238 views

Is tRC memory timing really equal to tRAS + tRP?

Wikipedia, among other sources states that TRC = TRAS + TRP Running CPU-Z on my desktop machine would confirm that for 1200MHz mode (50 = 35 + 15): However, that doesn't fit with the Kingston ...
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1answer
83 views

Upgrading a desktop with 32G server RAM fails

I have a PC based on Gigabyte GA7-87X-D3H motherboard. At present it is runn8ing with 2 x 4GB KVR16LN11/4, and everything works fine. (These run at 1600MHz). I bought (used) a 32GB DRAM upgrade. 1 x ...
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1answer
79 views

How to find the appropriate RAM to upgrade? [closed]

I want to understand how to upgrade RAM on a computer, and everywhere I see something else to consider to upgrade. What is the full formula or algorithm? What decisions are derived from the mother ...
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2answers
289 views

Can I replace SODIMM SDRAM with SODIMM DRAM in my laptop?

I have an Asus Vivobook X540UP laptop with 4gb SDRAM and I want to replace or expand it but I don't know if it is compatible or if I can change it into DDR3 or DDR4 RAM. So, is it capable to be ...
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1answer
111 views

Installing a non even number of RAM sticks?

I am kind of a newbie in computer hardware and I have an old computer that has actually 3GB of RAM installed, splitted on 4 slot: slot1 has a 1GB RAM stick, slot2 has 512MB RAM stick, slot 3 has 1GB ...
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2answers
1k views

DDR3 DRAM geometry notation

When I'm reading the document 2Gb: x4, x8, x16 DDR3 SDRAM, it states three different types of DDR3 DRAM: MT41J512M4 – 64 Meg x 4 x 8 Banks MT41J256M8 – 32 Meg x 8 x 8 Banks MT41J128M16 – 16 Meg x ...
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1answer
12k views

PC3L 12800S vs 12800U

What is the difference between DIMM modules labelled as PC3L 12800S and PC3L 12800U, respectively? I guess they are both low-voltage PC3 modules but AFAIK PC3L modules run at 1.35V (instead of 1.5V) ...
2
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1answer
2k views

Are all DDR3L (1.35V) DIMMS safe to use in a computer system that uses DDR3 (1.5V) DIMMs?

The sales support of (the consumer/prosumer sales subsidiary of) a DRAM manufacturer answered a pre-sales question I made with (translated from an email in French): 1.35V Memory DIMMs are dual ...
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1answer
68 views

DDR3 SDRAM specification understanding

What's difference between two memory modules 4GB 2Rx8 PC-10600S-09-10-D1 and 4GB 2Rx8 PC-10600S-09-10-F2. What the ending is stand for? I wonder if those modules could work together.
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1answer
190 views

SDRAM addressing

How memory controller maps linear address given by CPU to SDRAM addressing scheme? I guess it is something like: 0x0 - rank 1, bank0, row 0, column 0 0x8 - rank 1, bank0, row 0, column 1 . . . (...
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1answer
601 views

DDR3 SDRAM compatibility: clock speed and timings

I want to upgrade my computer’s DDR3 SDRAM, replacing the single module that it currently has with newer ones. I am wondering if I must (or ought to) stick fairly strictly to the DDR3-1333 version ...
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1answer
50 views

Samsung DDR3 RAM modules

Trying figure out the compatibility of the following RAM modules from Samsung: 4GB 2Rx8-10600S-09-10-F2 M471B5273CH0-CH9 AND 4GB 2Rx8 10600S-09-10-F3 M471B5273CH0-CH9 the 1st module is the ...
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1answer
124 views

Does Sdram have internal clock?

I mean, does the sdram always runs at FSB(Front System Bus) speed? What happens if the sdram has slower or faster clock than the FSB clock?Does it have clock multiplier or divider internal circuit for ...
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1answer
83 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 ...
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2answers
272 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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4answers
143k 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
2k 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
3k 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
1k 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 ...
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2answers
198 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
3k 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
4k 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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0answers
235 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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3answers
270 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 ...