should any ddr2 memory module fit any mobo that supports ddr2?

[kc56]

I recently purchased a 4gb ddr2 667mhz pc2 5300f memory module for my ECS g41t-m mobo only the keyhole in the mod doesn't line up with the keyhole on the mobo. I have ddr2 memory on the board now. Are they not standard, at least in size? I do know that some don't work with certain CPUs but I assumed that was a different issue.

 

[nostall]

Make sure the module you purchased is actually DDR2, not DDR nor DDR3. If it is DDR2, then you may be trying to install it 180 degrees wrong - turn it around.
Is there a label on the module?

 

[kc56]

Make sure the module you purchased is actually DDR2, not DDR nor DDR3. If it is DDR2, then you may be trying to install it 180 degrees wrong - turn it around.
Is there a label on the module?

It is labeled as DDR2 and I have tried it both ways and also compared it to the one that fits and it is different, but only slightly. I asked the question to determine if the vendor sent me the wrong part or the part is defective.

 

[ffg7]

they sent you the wrong mislabled part as your motherboard only uses ddr2 ram. http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?DetailID=925&MenuID=16&LanID=0

 

[brispuss]

The PC2 5300F module is buffered memory type which is not compatible with the G41T-M motherboard.

This motherboard can only use standard unbuffered memory type with designation something like: PC2-5300U, or PC2-5300 (without a suffix letter).

 

[Calvin7]

The F stands for Fully Buffered Server Memory. 240 pin FB-DIMM DDR2 are notched differently from conventional 240-pin DDR2. Those types are neither mechanically nor electrically compatible. They were used in Intel Xeon processor 5000 sequence (Dempsey)/Blackford chipset server motherboards around 2007.