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Questions tagged [dram]

44 questions
6
votes
1 answer

Matched DRAM -- Why? Is it important?

Crucial's website tells me: Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules. What exactly does that imply (what exactly needs to be "matched"? the brand, size, speed, etc.?)…
user541686
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6
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2 answers

Is DRAM on a SSD managed by the OS or by the firmware?

I am using a SSD connected to a Mac over a sata to usb bridge to archive relatively big files. After I transfer it to the SSD, I unmount it and and unplug it. This SSD has a DRAM cache. From my understanding, this cache is both used to cache writes…
agz
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5
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2 answers

Synchronous vs. Asynchronous DRAM

I have simple question, why do we use in computers today synchronous memory? Is there some advantage over asynchronous?
user32569
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3
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2 answers

How frequent are DRAM errors?

How frequent are DRAM errors? How significant a factor is heat? Is it worth investing in ECC RAM?
ChrisInEdmonton
  • 8,796
2
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2 answers

64-bit Windows 7 can only use 3.25GB of RAM instead of 4GB?

Possible Duplicate: How to enable 4GB in my Windows 7 64 bit? My Windows 7 is 64-bit, and I thought that means it can use the full 4GB of RAM installed on the computer. But I just saw this on my computer's properties: (So only 3.25GB is…
nonopolarity
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2
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1 answer

Why does DRAM not burn-out when SSD's do?

Normal SSD will expire after some number of reads and writes. Why is this? And how did they fix it for DRAM?
Cris Stringfellow
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2
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0 answers

Does a Page Mode SRAM similar to Page Mode DRAM exist?

Page Mode DRAM is essentially doing multiple column accesses per a single row access. This seems pretty logical to me, but I couldn't find anything similar written about SRAM. Does standard SRAM already do this and is there a name for it? If SRAM…
Joe K
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1 answer

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 stick and slot 4 a 512MB stick. I would like to…
Martin B.
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2
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2 answers

What's the difference between DRAM stick width and DRAM chip width?

I read the following paragraph in Mike Myers CompTIA A+ book: Modern DRAM sticks come in 32-bit and 64-bit-wide data form factors with a varying number of chips. Many techs describe these memory modules by their width, so we call them x32 and x64.…
Jon
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2
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2 answers

How to interpret the parameters in a DIMM datasheet?

I am trying to understand the internal layout of my DDR4 DIMM. Such as: rank number bank number row/column of the memory array within a bank According to intel customer script, the reported DIMM parameters are like this: From this post I know…
smwikipedia
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What is the difference between DIMM modules labelled as 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) while PC3U modules run at 1.25V. Are these both…
Joul Dalk
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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 voltage, and can work at both 1.35V et 1.5V; your…
fgrieu
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EVGA X58 SLI motherboard doesn't boot with new memory

EVGA X58 SLI (EVGA E758-A1 3-Way SLI (x16/x16/x8) LGA 1366 Intel X58 ATX Intel Motherboard) was normally working with three CORSAIR DOMINATOR 6GB (3 x 2GB) 240-Pin DDR3 Triple Channel Kit Desktop Memory Model TR3X6G1600C8D . I recently purchased 6…
Dims
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2 answers

Can I mix DDR1 from different manufacturers?

Possible Duplicate: Can I mix different RAM modules in PC? I've got an old computer with four DDR1 slots. Can I insert two sticks from Corsair and two sticks from another manufacturer (with a viking logo) without worrying? Or do I risk breaking…
Andreas
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1
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Calculating DRAM Timing Parameters from Latency

Let's say that we're looking at a DRAM with typical timing parameters (those of interest are listed below) with read and write latencies of ~20-50 nanoseconds. How would one go about changing the timing parameters to cause the read and write…
Patrick87
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