Crucial CT4K16G4DFD8266
This 64GB DDR4 kit stands out with ECC unbuffered memory operating at 2666 MT/s, delivering up to 32% more bandwidth and 40% lower power consumption than standard DDR3. Its dual-ranked, x8-based design ensures faster burst access speeds for improved sequential data throughput in compatible workstations. This kit is best for server administrators and workstation users running memory-intensive, error-sensitive applications like virtualization or financial modeling.
Snapshot
Pros & Cons
Pros
- Strong capacity (90th percentile) 90th
- Strong social proof (77th percentile) 77th
- Strong feature (73rd percentile) 73rd
Cons
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 9 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Memory
| Type | DDR4 |
| Form Factor | UDIMM |
| Total Capacity | 65536 |
| Modules | 4 |
| Per Module | 16384 |
| Pins | 288 |
| Rank | 2Rx8 |
Performance
| Speed | 2666 |
| CAS Latency | 19 |
Class
| ECC | Yes |
| Registered | No |
vs Competition
| Spec | Crucial CT4K16G4DFD8266 | Kingston FURY Beast KF564C32BWEAK2-64 | Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 | G.Skill Flare X5 F5-6000J2836G32GX2-FX5 | KLEVV CRAS V RGB KD5BGUA80-60A300J | Patriot Viper Xtreme 5 S9145489 |
|---|---|---|---|---|---|---|
| Capacity | 64GB | 64GB | 64GB | 64GB | 64GB | 32GB |
| Kit | 4 x 16GB | 2 x 32GB | 2 x 32GB | 2 x 32GB | 2 x 32GB | 2 x 16GB |
| Memory Type | DDR4 | DDR5 | DDR5 | DDR5 | DDR5 | DDR5 |
| Speed Mts | 2666 | 6400 | 6400 | 6000 | 6000 | 8200 |
| Cas Latency | CL19 | CL32 | CL32 | CL28 | CL30 | CL38 |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Ecc | true | false | false | false | false | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Feature | Latency | Capacity | User Sentiment | Social Proof |
|---|---|---|---|---|---|---|
| Crucial CT4K16G4DFD8266 | 37.5 | 72.9 | 35.9 | 89.9 | 61.7 | 76.8 |
| Kingston FURY Beast KF564C32BWEAK2-64 Compare | 94.7 | 87 | 87.5 | 89.9 | 90.1 | 93.4 |
| Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 Compare | 94.7 | 87 | 87.5 | 89.9 | 97.3 | 98.2 |
| G.Skill Flare X5 F5-6000J2836G32GX2-FX5 Compare | 87.4 | 72.9 | 97.2 | 89.9 | 97.3 | 74.6 |
| KLEVV CRAS V RGB KD5BGUA80-60A300J Compare | 87.4 | 87 | 87.5 | 89.9 | 97.3 | 87.7 |
| Patriot Viper Xtreme 5 S9145489 Compare | 99.6 | 98.6 | 97.7 | 70.9 | 0 | 78 |
Price
Value & Pricing
Amazon 1 offer From $498
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
