I have two modules of Kingston KVR40064C25/512 installed in my machine at home. These modules have chips on both sides. I found this same memory online but the chips are only on one side. Will the two new memory modules run in dual channel mode with the old. The timings and quantity and speed are the same on all four modules.
CPU-Z only says that this is an IBM board in the Model form field. No model number for the board. The .pdf documentation that came with the computer says only 2700 or 3200 memory is compatible. No real specs on the memory
“Product: Ibm / 8187e1u”
your full model is IBM ThinkCentre M50 8187elu
P4, 2.8ghz.
You’ve got 4 ram slots, max 1gb per slot.
Brand name computers often have oddball brand name specific ram module ID strings. Ram with a generic (general pupose) ID string may be compatible and work fine, but it’s often hard to determine that, because whether it is compatible isn’t listed anywhere.
Kingston lists only brand name specific ram module ID strings for your IBM model.
http://www.ec.kingston.com/ecom/con…
E.g. KTM-M50/512
Kingston doesn’t have the info, but vendors selling the same module model show chips on one side, only:
http://www.frontierpc.com/ProductDe…
http://www.buy.com/prod/10408445.html
http://www.ncix.com/products/index….
If the KVR40064C25/512 16 chip modules work fine in dual channel mode, the KVR40064C25/512 8 chip modules SHOULD work fine too, since your model supports the KTM-M50/512 8 chip modules.
However, KTM-M50/512 modules will work FOR SURE.
I have noted that some Kingston model modules originally specified to have 16 chips (8 chips on each side) now have 8 chips (on one side).
KVR40064C25/512 is specified to have 16 chips
http://www.valueram.com/datasheets/…
I don’t know whether the 8 chip ones have been wired up so the computer sees them the same as if they had 16 chips or not – if so, the modules will work installed in older computers that require 16 chips that can’r recognize the module if they have 8; if not, the 8 chip ones can’t work in older computers.
……..
However, if you search for ram using the mboard model number that’s in a brand name system, usually the modules listed have a generic (general purpose) ID string, for any particular brand
(KVR400X64C25/512 is a Kingston generic ID string).
I have determined by searching using: IBM ThinkCentre M50 motherboard
that you probably have an Intel brand name mboard. Chipset: Intel 865G
Open up the computer case and find the mboard model number on the mboard itself.
It’s either printed on the mboard surface, or it’s on a label that’s stuck on top of it – it may be on the printer port if you have one.
It’s probably got an Intel brand mboard, model D865G or D865Gxxxx where xxxx is one or more additional letters.
…….
KVR400X64C25/512 modules are NOT listed for ANY Intel mboard:
http://www.ec.kingston.com/ecom/con…
KVR400X64C3A/512 modules ARE listed for Intel D865Gxxxx mboards:
http://www.ec.kingston.com/ecom/con…
Therefore, your KVR400X64C25/512 modules are probably running at a CAS of 3, NOT 2.5, on your computer.
KVR400X64C3A/512 modules are also specified as having 16 chips
http://www.valueram.com/datasheets/…
……
In order for dual channel support to work, the ram must be installed in specific slots and the two modules in each pair must be identical; however the two sets of pairs do not have to be identical to each other.
Are you sure you didn’t post the module number of the newer RAM? That number should only have chips on one side.
Below is a link to the same RAM as you posted if in fact that is what you currently have.
Kingston part numbers tell the story. KVR (Kingston Value Ram) 400 (speed) 64 (chip size in MB.) 25 (CAS rating) 512 (module capacity.
So 8 64MB chips = 512MB.
http://www.newegg.com/Product/Produ…