[ DDR DIMM GENERATIONS // IDENTIFIED COMPONENT ]
DDR2-800 UDIMM (PC2-6400)
DDR2 desktop memory standard. This file identifies a specific part or clearly bounded model family, rather than an overview of the category.
IDENTIFY THE REVISION: Check the complete product code, suffix, board revision, region, firmware, and date code. Similar names do not guarantee the same hardware.
Part specifications
| Catalog subcategory | DDR DIMM generations |
|---|---|
| Catalog identity | DDR2-800 UDIMM (PC2-6400) |
| Generation / family | DDR2 desktop memory standard |
| Architecture / ratings | 240-pin DIMM; 1.8 V nominal JEDEC; 800 MT/s data rate; 6.4 GB/s theoretical bandwidth per 64-bit channel. |
| Interface / fit | DDR2 is mechanically keyed differently from DDR/DDR3; board max capacity and density support vary. |
| Variants / field identification | PC2-6400 is bandwidth class; rated modules may use overclocked voltage/timings beyond JEDEC. |
| Evidence to collect | Photograph the nameplate and PCB labels; record test system, firmware, installed accessories, condition, and manual/datasheet revision used to verify specifications. |
Compatibility, care & service
- Check electrical signaling, pinout, voltage, current, connector, mounting and supported firmware before installation; do not rely on matching shapes alone.
- Inspect physical condition and manufacturer warnings; mains PSUs, CRTs, batteries and spinning media may retain hazardous energy or require specialist service.
- For vintage equipment, use the correct bus generation, BIOS, driver, media type, cable orientation and resource configuration documented for the machine.
- Record measured results separately from the manufacturer's published limits and state the setup and measurement conditions.
Model-specific notes
DDR2 is mechanically keyed differently from DDR/DDR3; board max capacity and density support vary.
PC2-6400 is bandwidth class; rated modules may use overclocked voltage/timings beyond JEDEC.
Sources & further reading
- Manufacturer / standards reference — DDR2-800 UDIMM (PC2-6400)Source for product-family specifications; compare exact suffix, revision, and region with the unit label.
- Manufacturer / standards reference — DDR2-800 UDIMM (PC2-6400)Source for product-family specifications; compare exact suffix, revision, and region with the unit label.
Links lead to manufacturer or standards references where available. If a source covers a family, use the exact model's manual as the final authority.