How to verify RAM is Registered ECC RAM?

[dcmbrown]

Is there a way to tell whether an OEM RAM module (in my case an SDRAM module) is actually a registered ECC RAM module?

I received a RAM module which is supposed to be a 512MB PC133 Registered ECC SDRAM module.
It does not look like the lower module on this page:

http://www.crucial.com/crucial...asp?memtype=REGISTERED

Nor have I ever seen a registered DIMM which does not have (for lack of a better term) the extra register chips. The part number for the memory chips themselves I can find on google for both registered and plain unbuffered OEM SDRAM so I am fairly certain that the module is unbuffered.

Are there registered RAM modules made these days without the register chips? If so, how do you tell them (unmarked modules) apart?

Will a PC which normally takes plain SDRAM (ECC or non-ECC) choke on a registered ECC SDRAM module?

Is there a way (in Linux or Windows) to tell whether the memory module

 

[gwai lo]

download www.cpuid.com ...that will be the easiest way I suppose...or the easiest way I can think of for now

 

[MiniDoom]

I think the ecc ram will have an odd number of chips on it, since its 72 bit. The last eight bits being for parity.
The pic here also shows how to tell if it?s registered. There are extra chips at the bottom.
Sorry it?s in French or something but has a picture.

 

[dcmbrown]

I know that it is ECC RAM. Being registered memory or plain unbuffered memory however is the difference between my server running happily or not booting at all.

 

[MiniDoom]

it looks like you got Unbuffered ram.

 

[PumpActionWalrus]

IT will have an extra chip, an odd number on each side

 

[GoSharks]

Originally posted by: dcmbrown

Will a PC which normally takes plain SDRAM (ECC or non-ECC) choke on a registered ECC SDRAM module?

yes.