This document describes Kingston’s 256M x 64-bit 2GB (2048MB) DDR2-800 CL5 SDRAM (Synchronous DRAM) memory module, based on sixteen 128M x 8-bit DDR2 FBGA components. This module has been tested to run at DDR2 800MHz at latency timing of 5-5-5-15 at 1.85V. The SPD is programmed to JEDEC standard latency 667Mhz timing of 5-5-5-15 at 1.8V. This 240-pin DIMM uses gold contact fingers and requires +1.8V. The electrical and mechanical specifications are as follows:
The Kingston KHX6400D2/2G is a 2 GB DDR2‑800 CL5 SDRAM DIMM built from sixteen 128M × 8‑bit FBGA components. The module operates at 1.8 V (±0.1 V) and is rated for a 5‑5‑5‑15 timing at 1.8 V or 1.85 V.
The datasheet lists electrical and mechanical specifications, including clock cycle times, power consumption, temperature ranges, and key features such as double‑data‑rate architecture, programmable latency, and a high‑performance heat spreader.
| Clock Cycle Time (tCK) CL=5 | 3 ns (min.) / 8 ns (max.) |
|---|---|
| Row Cycle Time (tRC) | 60 ns (min.) |
| Refresh to Active/Refresh | 127.5 ns |
| Command Time (tRFC) | not specified (listed as Command Time) |
| Row Active Time (tRAS) | 45 ns (min.) / 70,000 ns (max.) |
| Single Power Supply | +1.8 V (±0.1 V) |
| Operating Power | 2.016 W |
| UL Rating | 94 V - 0 |
| Operating Temperature | 0 °C to 55 °C |
| Storage Temperature | -55 °C to +125 °C |
The module requires a single power supply of +1.8 V (±0.1 V).
It is programmed to JEDEC standard latency 5‑5‑5‑15 at +1.8 V (or +1.85 V).
Operating temperature is 0 °C to 55 °C, and storage temperature is –55 °C to +125 °C.
The module consumes 2.016 W while operating.