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The Memory Chip
Choosing the right memory chip is extremely important, especially for overclockers. Unlike other equivalent modules which are all based on the popular Samsung TCCD memory chips, Mushkin is building the PC3200 HP-series modules on the higher-density Infineon HYB25D512800BE-5 memory chips.
This memory chip is rated at DDR400, with a modest timing of 3-3-3. It is a 512Mbit chip with an access time of 5ns.
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Chip
Infineon does not make a lot of DDR400 chips, or anything faster than that. After browsing their website, there appears to be a newer revision of the same memory, - the HYB25D512800CE-5, which seems to have the same specifications as the BE-5.
As you can see from the specification below, it is a DDR400 chip with a slow stock timing of 3-3-3, a slightly increased default voltage of 2.6 V. It shows that Infineon is pushing the chip to the limit, without leaving much room for overclocking.
But because Mushkin pre-tests these memory chips to select the top chips, they have managed to get these high-density chips to run at much tighter timings of 2-3-2, which isn't bad at all.
Memory Chip Specifications
| Chip Capacity | 512 Mbit |
| Chip Density | 64M x 8 |
| SDRAM Speed | 5.0 ns |
| Rated Memory Clock | 200 MHz |
| Data Transfers Per Clock | 2 |
| Rated Timings | 3-3-3 |
| Refresh Rate | 7.8
µs |
| I/O Voltage | 2.6
- 2.7 V |
| Operating Temperature | 0
to 70 °C |
| Power Dissipation | NA |
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