ddr333 and pc2700

[TechBoyJK]

Are these not the same?

http://www.crucial.com/kb/answer.aspx?qid=4003

I have some machines that use ddr333..

I only had two ddr333 512mb chips and about 20 machines, so I ordered some more ram

got on ebay and looked up ddr333 and ordered some.

get it and it says pc2700

It works fine in some machines, but they are only showing 512MB usage where as they are supposed to be 1GB sticks

and some machines that accept my 512MB ddr333 chips aren't booting up with the pc2700

what gives?

 

[VirtualLarry]

PC2700 is indeed another way of saying DDR-333, just as PC3200 is the same thing as DDR-400.

Sounds like some of the RAM that you bought was incompatible.

 

[TechBoyJK]

Originally posted by: VirtualLarry
PC2700 is indeed another way of saying DDR-333, just as PC3200 is the same thing as DDR-400.

Sounds like some of the RAM that you bought was incompatible.

But, the ddr333 512MB chips work fine. I put in some 1GB sticks that say pc2700 and I'm getting issues. Shouldn't they be the same? neither are ECC or registered

 

[tcsenter]

Being from Ebay, the modules are most likely some 'high density' type that are not compatible with your machines, particularly if they were much cheaper than other 1GB PC2700 modules.

Detecting half the module capacity is classic symptom of incompatible high density modules. If you could link to the Ebay auction or another listing for the same item, and provide the specs of your machine, it would help.

 

[Yellowbeard]

tcsenter nailed it. Some older chipsets can't handle newer higher density ICs. Make sure those boards showing the issue have the most recent BIOS as in some cases, a BIOS update can resolve this.

FYI, when you see a "PC" spec, such as PC2700, divide by 8 and it will give you the DDR spec.

2700/8 = 337.5. But, it rounds to 2700.