G.Skill Ripjaws S5 Series 128GB DDR5-6400
Delivering a massive 128GB capacity at 6400 MT/s with CL36 timings, this dual-channel kit provides high bandwidth for memory-intensive tasks using Intel XMP 3.0 profiles. The unbuffered design and low-profile matte black heat spreaders ensure broad compatibility and fit in tightly packed desktop builds. This kit is best for workstation users running complex simulations, heavy 3D rendering, or large dataset analysis who need maximum capacity without moving to a server platform.
No current retailer price
Snapshot
Pros & Cons
Pros
- Strong capacity (97th percentile) 97th
- Strong speed (95th percentile) 95th
- Strong latency (78th percentile) 78th
- Strong feature (75th percentile) 75th
Cons
- Below average affordability (2nd percentile)
- Below average social proof (3rd percentile)
- Below average user sentiment (14th percentile)
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 1 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Memory
| Type | DDR5 |
| Form Factor | UDIMM |
| Total Capacity | 131072 |
| Modules | 2 |
| Per Module | 65536 |
| Pins | 288 |
Performance
| Speed | 6400 |
| CAS Latency | 36 |
| Timings | 36-44-44-102 |
| Voltage | 1.35 |
Class
| ECC | No |
| Registered | No |
| OC Profile | Intel XMP 3.0 |
Features
| RGB | No |
| Heat Spreader | Yes |
vs Competition
| Spec | G.Skill Ripjaws S5 Series | Kingston FURY Beast KF564C32BWEAK2-64 | Corsair Vengeance CMK64GX5M2B6000Z30 | KLEVV CRAS V RGB KD5KGUD80-60A300G-BLACK | Crucial Pro Overclocking CP2K32G60C40U5W | ADATA Lancer Blade RGB AX5U6000C3016G-DTLABRBK |
|---|---|---|---|---|---|---|
| Capacity | 128GB | 64GB | 64GB | 64GB | 64GB | 32GB |
| Kit | 2 x 64GB | 2 x 32GB | 2 x 32GB | 2 x 32GB | 2 x 32GB | 2 x 16GB |
| Memory Type | DDR5 | DDR5 | DDR5 | DDR5 | DDR5 | DDR5 |
| Speed Mts | 6400 | 6400 | 6000 | 6000 | 6000 | 6000 |
| Cas Latency | CL36 | CL32 | CL30 | CL30 | CL40 | CL30 |
| Form Factor | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Ecc | false | false | false | false | false | false |
| Compare | Compare | Compare | Compare | Compare |
| Product | Speed | Feature | Latency | Capacity | User Sentiment | Social Proof | Affordability |
|---|---|---|---|---|---|---|---|
| G.Skill Ripjaws S5 Series | 94.7 | 74.8 | 78.2 | 97 | 14.1 | 2.7 | 2.4 |
| Kingston FURY Beast KF564C32BWEAK2-64 Compare | 94.7 | 89.5 | 87.7 | 89.9 | 89.6 | 92.3 | 7.6 |
| Corsair Vengeance CMK64GX5M2B6000Z30 Compare | 87.4 | 74.8 | 87.7 | 89.9 | 77.6 | 92.3 | 7 |
| KLEVV CRAS V RGB KD5KGUD80-60A300G-BLACK Compare | 87.4 | 89.5 | 87.7 | 89.9 | 97.2 | 85.6 | 8.3 |
| Crucial Pro Overclocking CP2K32G60C40U5W Compare | 87.4 | 74.8 | 68.9 | 89.9 | 60.6 | 80.5 | 10.5 |
| ADATA Lancer Blade RGB AX5U6000C3016G-DTLABRBK Compare | 87.4 | 89.5 | 87.7 | 70.9 | 0 | 97.8 | 15.8 |
Price
Value & Pricing
We started tracking prices for this product on Jun 14, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
