Tom's Hardware > Forum > Motherboards & Memory > Memory > MEMORY FAQ (please read before posting)
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tcsenter   12-08-2008 at 09:42:09 PM
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Last message on previous page:
Correction needed:

BrentUnitedMem wrote :

Memory module bank: Logical division of chips on a PCB board. A single memory bank can be composed of any number of chips. Some banks are composed of only 2 chips, whereas some other modules have 18 chips or more per bank. Not to be confused with memory Rank, see next term.
Memory rank: The physical side of a memory module. The side of the module is referred to by Rank0 or Rank1.


Actually, DIMM rank is a logical 64-bit memory side (chip-select), synonymous with one 64-bit memory row. JEDEC adopted the term "rank" specifically to address on-going confusion between physical and logical memory "sides".

Case in point, unbuffered DIMMs using 4-bit wide DRAM IC (32Mx4, 64Mx4, 128Mx4, et. al.) will have 16 chips total, eight on each "physical" side, but are in fact only single-rank modules. These are commonly referred to as 'high density' modules, though the term 'high density' is entirely relative and can have different meanings depending on the technology or context being discussed. Another example are registered server DIMMs, which can have up to four (quad) ranks per module, two ranks on each "physical" side.

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ericjohnson1981   01-25-2009 at 07:58:02 AM
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Once again you are a huge time saver! http://www.imagehunt.info/andre09/smile1.gif http://www.imagehunt.info/andre09/smile.gif

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chrisvsplumber_81   03-20-2009 at 03:11:58 AM
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Hey I was wondering what you all thought about my system and if you could help me identify my bottleneck. I got disgusted with Dell and fell in love with Crysis the game at the same time and gave my ispiron 531 a makeover. saved my money and got a amd phenom quad core 9950, motherboard: MSI k9a2 platinum 790 fx am2+, still have the HDD that came with the dell, the 19" monitor (max resolution 1440X900) and had 4 X 1 gig 667 ddr2 240 pin memory (5300u?) recently gave all my old stuff to my parents computer as it took them like 5 minutes just to load a web browser, and gave them two sticks of the memory. I'm going to get new memory but I have no idea if it would be worth just getting all new memory at 800 or 1022. Also as far as graphics go, is a bottleneck at my monitor's resolution? would it look more realistic with a better monitor? My brother told me it could have to do with the HDD speed? Also I don't know if this helps, but I was watching the frames per second and when I put the graphics options to the max my fps dropped to like 18 from 40....

one other side note, have any of you ever had your harddrive say that you're using WAY more gigabytes than you actually are? is this another blessing Dell has bestowed upon me,
if I've learned on solid piece of information of all this it's.... friends don't let friends buy Dell, wish someone woulda told me.
Thanks a bunch

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112inky   03-23-2009 at 08:11:22 AM
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Hi that was a wonderful list.. i am new to the forum and would like to have a happy time here... could anyone brief me about the modern developments in a systems memory?

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Proximon   04-04-2009 at 03:15:12 AM
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This is still great stuff, but we need an update for DDR3 with I7 and AM3.

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gamemaniac   06-11-2009 at 01:00:25 PM
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Hello,
Iam a newbie. I have gone through first few definitions. It would be of great help for me as well like others.

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uberguber   09-20-2009 at 10:51:28 PM
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I have been building computers for quite some time now and long enough to know that things change quickly and constantly and my last build was about 6 mo. ago. In the past, I have had a soft spot for corsair's dual channel memory. I am getting ready for a build with water cooling and I am going to oc to the hilt. I mean extreme and I know most of the parts that I am going to use. As far as a higher and more stable oc, which mobo and ram combo do you recommend?
As for the water cooling, I will stick with Innovatek for the most part. Their the best in my eyes, but some of their stuff is out of stock, so I'll use some Koolance parts and so on. Eheim pumps are hard to beat.

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admin123   10-21-2009 at 06:23:00 PM
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Great help to me just gone from the basic to more of advanced understanding from this threa. Much apppreciated http://tsutton.site90.net/imgs/signature_smiley1.jpg

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