What is the difference between single sided and double sided DDR???

[x86]

What is the difference between single and double sided DDR SDRAM? How does one tell?

Thanks

-DocSmarts

 

[LostHiWay]

Here's a way to tell. While the computer is running pour some water on the the DDR memory. If it's only a light shock then its single. If it knocks you on your ass it's double sided.

j/k

Single sided only has the memory chips on one side. Double has them on both.

 

[Athlon4all]

LostHiWay. Please cut the snotty remarks. DocSmarts doesn't deserve this, he learned his lesson. Yes, Double-sided has Chips on both sides of the PCB while single sided has chips on only one side.

 

[HardwareAddicted]

Well I'm not so sure about the overclocking....all the crucial ram I buy is dbl sided, and clocks great.

But if you read the specs closely on motherboards, you will see that many w/3 dimms slots will say "supports 6 banks of memory"

What this means to you is that this MB will accept DBL sided ram....

My understanding on single sided ram of the same size, is that it is "high-desity"....

This about all I can tell you without going to a higher source....if I have anything wrong here, LMK

~ Me

 

[x86]

<< LostHiWay. Please cut the snotty remarks. DocSmarts doesn't deserve this, he learned his lesson. Yes, Double-sided has Chips on both sides of the PCB while single sided has chips on only one side. >>



Does this affect performance at all? Is there a difference between the number of pins? How do I tell from a retailer/wholesaler?

 

[Ionizer86]

Both types have 184 pins. You can tell by checking if there are chips on one side or both sides of the PCB. The only case in which it would matter would proably be with the nForce 415 or nForce 420.

 

[Ionizer86]

Both types have 184 pins. You can tell by checking if there are chips on one side or both sides of the PCB. The only case in which it would matter would proably be with the nForce 415 or nForce 420.

 

[x86]

<< Both types have 184 pins. You can tell by checking if there are chips on one side or both sides of the PCB. The only case in which it would matter would proably be with the nForce 415 or nForce 420. >>



How does one tell when buying from a retailer/wholesaler?

-DocSmarts

 

[Kingofcomputer]

Today's standard non-ecc sdram or ddr sdram dimm uses either 8 chips single side or 16 chips double side.
Single side dimm uses half amount of the chips than double side, so the size/density of each chip on single side dimm is double of those on double side dimm.

Some manufacturers use different part number to specify the sides of the dimm,
for example, Kingston valueram's part number with additional -SS ending means single side, without means either single side or double side.

 

[FishTankX]

You don't tell. Unless you ask. But I can guarntee you a system fillled with 4 single sided DIMMs will be more stable under overclocked conditions than a system filled with 4 double sided DIMMs. Basicly it's like this. A single sided DIMM takes up 1 bank. A double sided DIMM takes up two banks. To a chipset, it sees DIMMs as banks. The less banks, the less it has to deal with and the less hectic everything is. BTW, if you buy from crucial you can tell if it's double sided or single sided. You count the number of chips. If it's 8X32 then it's 256MB single sided. If it's 16X16 than it's a 256MB double sided. Basicly the first number is the number of chips, second number is the capacity of each one. The i845D chipset *ONLY* supports 4 banks so if you buy a motherboard with 3 DIMM slots or more one of your DIMM banks has to be using single sided memory singe 3 slots X 2 banks each is 6 banks which is way more than the i845D can handle! If I were you, i'd just get PC800 and an Asus P4T-E...