Kingston PC3-12800 4GB DIMM 1600 MHz DDR3 SDRAM Memory (KHX1600C9D3/4G)

Case of the two-faced DIMM

I bought a Kingston KHX1600C9D3/4G 4GB 1600MHz DDR3 memory module to match the existing memory module installed in an older computer with a Core 2 Duo CPU. It worked very well, even though the older system could not take advantage of the module's highest FSB speed support.

I found that I had to be careful, though. As I searched for someone or someplace selling this exact model of memory module, I learned that Kingston had actually produced two significantly different module designs under the same model number, one of which was incompatible with older systems like mine. I encountered online forum posts from people looking for help to figure out why the memory modules they purchased didn't work with their systems, even though the model number was in their motherboard's memory compatibility list!

The first release of this KHX1600C9D3/4G memory module was assembled with sixteen 256MB memory chips. And then later, Kingston released, with the same model number, a memory module with eight 512MB chips. Some older systems don't support memory modules with 512MB chips. In the case of my older system, modules with the higher-capacity chips are ignored.

Memory modules with fewer chips yet the same total capacity are cheaper to produce and have no performance difference from modules with more chips. The trouble is that by recycling model numbers, users looking to add memory to their older computers may find that the memory they purchased is not compatible, even when the model number is present on the official memory compatibility list for their motherboard!

So when I went on eBay looking for someone selling this model, I had to ask the seller to check how many chips his modules had. You be sure to do the same, otherwise you may find yourself with incompatible memory! Or worse, you may misdiagnose the memory or your motherboard as bad!Read full review

Verified purchase:  Yes • Condition: pre-owned • Sold by: whatyoubuyiswha...

Quality components

Top quality performance. Just what I needed to up the processing speed on my computer

Verified purchase:  Yes • Condition: pre-owned • Sold by: mystoreb55

Good product

Works at rated speeds is clean and overall good shape

Verified purchase:  Yes • Condition: pre-owned • Sold by: tyler.br.1300

Good value

Fast memory. Works well as expected!

Happy Customer

Product works well, I have it in a computer with three 2G sticks also. I am happy.

Verified purchase:  Yes • Condition: pre-owned • Sold by: southwestmem

Cool

Great work

Verified purchase:  Yes • Condition: pre-owned • Sold by: fganter

Great

Perfect

Verified purchase:  Yes • Condition: pre-owned • Sold by: cn10017224864

great buy

work great

All ok

All ok

Verified purchase:  Yes • Condition: pre-owned • Sold by: goodwillretech

Kingston 4 GB

Yes ok.

Verified purchase:  Yes • Condition: pre-owned • Sold by: reviveit.io