A Look Inside

As mentioned, this kit is based in two 1 GB DDR2-1066/PC2-8500 memory modules (2x CM2X1024-8500C5) programmed with 5-5-5-15-T2 timings. We decided to remove the heatspreader of one of the modules to take a look. Please don’t do this at home, as you may break your module or one of the chips, as happened to us once, and you will also void the memories’ lifetime warranty.

Corsair TWIN2X2048-8500C5Figure 2: One of the modules without its heatspreader.

The memory chips used are from Micron, D9GMH to be more exact – Micron’s full part number for these chips is MT47H64M8B6:D, where “D” is the revision code. The funny thing is that officially these chips are rated DDR2-667, so Corsair handpicks the chips they buy from Micron to see which ones can run at 1,066 MHz or above.

As each chip has a 512-Mbit density, 16 chips are necessary on an 1 GB module (512 Mbits x 16 = 1 GB). On 512 MB modules, eight chips are used.

Corsair TWIN2X2048-8500C5Figure 3: Micron D9GMH (MT47H64M8B6:D) chips.

The printed circuit boards (PCBs) of the modules are manufactured by Brain Power and are labeled as “BP ML E186014 94V-0”, as you can see in Figure 4.

Corsair TWIN2X2048-8500C5Figure 4: The printed circuit boards are manufactured by Brain Power.

We also found a small identifier on the PCB labeled “CORSAIR 50-00149B-G”, which can mean that even though the printed circuit boards are manufactured by Brain Power they are only used by Corsair.

Corsair TWIN2X2048-8500C5Figure 5: PCB identifier.


Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.