PC eye

Besides the difference in capacity seen between various types of memory someone we both know would recommend mixing different sizes together when adding memory to a system.

"two sticks of RAM in each channel must be a matched pair (same size and speed)." You wouldn't want to run two 512s with a single 1gb dimm added now would we? Yet "someone" would argue that point. hhmmmm...

SirKenin

What the bloody hell does that have to do with anything???? Holy shit. The guy didn't even specify that he had dual channel, number one. Number two, it doesn't matter a damn what size the modules are if you're not running in dual channel. I guess it does to you, but you've already proven your lack of tech abilities quite amply. I don't seem to have a problem. It isn't exactly rocket science and judging by the sigs here there are a lot of people that would agree.

Show me any memory expert that would agree with you. ANY.

Arm_Pit

This really is all irrelevent to the thread...

SirKenin

As usual.

If we could get back to the merits of SS vs DS memory that would be great.

PC eye

As usual someone fails to fully read the article. hhmmm.... One thing that is even more relevent is the article that explains some points a little more clearly for the late comers since this also explains about density and capacity.


The reason is memory density migration relation to compatibility with different computers. When computer manufacturers design and build new computers, they attempt to build in support for all DRAM chip densities that are available at the time. When PC100's were released, only 16MB chips and 64MB chips DRAM densities were available, but at that time, 128MB chips were already in the design phase, so the computer manufacturers built in support for this higher memory density. Today, manufacturers are capable of producing chips with densities of 256MB, 512MB, 1Gb and 2GB chips. As manufacturers get more density, or storage, per chip and migrate to newer processes, the production cost per megabit decreases.
The memory market is dictated by supply and demand. As demand increases for a higher density chip, the demand for older, lower density chips usually declines. Manufacturers typically shift their production accordingly. If the supply of the lower density chips decreases faster than demand, the market price per bit on these chips will remain high in comparison to the newer, higher density chips. That is why for example we can see higher pricing for 128MB SDRAM chips relative to 256MB SDRAM chips. The fact is that the older systems cannot support the newer, higher density, lower cost chips. The computer's chipset can only support the memory technology it was designed with, and the majority of systems out there only support lower density modules. Most users, especially when they are unaware about the importance of chip density and compatibility, will choose the lowest priced memory with specifications that LOOKS to be identical. But there's nothing more frustrating than trying to install your new memory only to find that it doesn't work with your system. http://www.oempcworld.com/support.htm

Anyone still stuck on finding out what memory can be used on their system?
http://configurator.oempcworld.com/index.asp

ADE

HAY, Why is it that High density RAM is only compatible with about 10% of computers?? Or that's what I herd anyway....

Cromewell

This is false. Certain memory controllers (all new ones from Intel) only need the same amount of RAM in each channel. ie. 2 512s and 1GB stick in the other to get dual channel.

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SirKenin

As usual he can't stay on topic (but I see he loves his cut and paste though)

To stay on topic so hopefully people will just ignore him, new 1GB modules use either 64Mx8 devices for low density, 128Mx8 devices for high density. Both are 16 chip.

Low density is always compatible, high density is 10% compatible. High density chips are rejects that could not be made into low density modules.

It has been brought to my attention that high density modules, while cheaper, can also be slower, but they are not eligible for a return or refund.

So, be careful what you buy.

rob123

PC eye, according to your profile you are 51 years old. Isn't it about time you grew up and acted those 51 years instead of pasting some random blurb that has absolutely nothing to do with the question?

I wish I were a copyright lawyer, I could sue your ass into next week with all the copy-and-paste infringement you do.

SirKenin

It's a favorite trick of his when he's been backed into a corner and it's been exposed that he has no idea what he's talking about. He comes out with some of the most ludicrous shit. You watch.