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The Memory Chip
For these 1066MHz modules, Corsair used the Micron Rev. D memory chips. These are UTT or untested memory chips, based on the Micron MT47H64M8B6 memory chip.
Corsair buys these memory chips from Micron at a discount because they are sold in bulk, totally untested. Corsair then tests and speed-grades them. The chips that make the grade are then used in these PC2-8500 modules.
We do not have the actual picture of the memory chip, but it should look just like any other 60-ball FCBGA memory chip.
The Micron Rev. D memory chip is a 512Mbit DDR2 chip, designed to run at up to 800MHz DDR at CL5 or 533MHz DDR at CL4. However, Corsair has specially selected memory chips that can actually hit 1066MHz DDR at CL5.
Let's have a look at the official specifications of the Micron MT47H64M8B6 DDR2 memory chip.
Memory Chip Specifications
These are the official specification of the Micron MT47H64M8B6 memory chip.
| Memory Chip | • Micron Rev. D die (MT47H64M8B6) |
| Chip Capacity | • 512 Mbits |
| Chip Configuration | • 64M x 8 |
| Chip Speed Grade | • DDR2-800 (CL5) • DDR2-533 (CL4) |
| Chip Rated Timings | • CL4 @ 533MHz DDR |
| Chip Rated Voltage | • 1.7 - 1.9 V |
| Chip Power Dissipation | • 1 Watt |
| Chip Refresh Rate | • 7.8 µs |
| Chip Package | • 60-ball FBGA |
| Chip Operating Temperature | • 0 °C to +85 °C |
