Samsung 64GB DDR4-3200 RDIMM (M393A8G40BB4-CWE)
A single 64GB DDR4 RDIMM running at 3200 MT/s with ECC Registered support, this module is built for server-grade stability and error correction. Its 2Rx4 dual-rank layout and 1.2V JEDEC standard voltage make it a reliable drop-in upgrade for compatible server systems, though it is strictly not for desktops or laptops. Best for IT administrators or homelab users managing memory-intensive workloads on supported server platforms who need high-capacity, error-correcting RAM without mixing ECC types.
Resumen
The 30-Second Version
A 64GB ECC RDIMM that's boring in the best way. Server builders, buy with confidence. Desktop users, back away slowly.
Pros & Cons
Ventajas
- Massive 64GB capacity on a single stick 90th
- ECC Registered for serious server stability 90th
- Dual rank x4 design for solid bandwidth
- Samsung quality, you know it'll just work
Desventajas
- Latency is rough, near the bottom of the barrel
- Pricey, especially in Europe where it varies wildly
- Server only, don't even think about a desktop
- Can't mix with other ECC types, so plan your build
Las pruebas
Performance
The 3200 MT/s speed is about average for DDR4 these days, but the real story here is capacity and reliability. A single 64GB dual rank module means you can pack a ton of memory into a server without filling every slot. The ECC Registered design is what keeps things stable when you're running workloads that can't afford a random bit flip. Latency sits near the bottom of the charts, but that's typical for high capacity RDIMMs and won't matter for most server tasks.
Specifications
Full Specifications
Memory
| Type | DDR4 |
| Form Factor | RDIMM |
| Total Capacity | 65536 |
| Modules | 1 |
| Per Module | 65536 |
| Pins | 288 |
| Rank | 2Rx4 |
Performance
| Speed | 3200 |
| Voltage | 1.2 |
Class
| ECC | Yes |
| Registered | Yes |
Features
| RGB | No |
vs Competition
The competitors listed here are mostly desktop gaming RAM like the Kingston FURY Beast and G.Skill Trident Z5, which is a bit of an apples to oranges situation. Those kits are faster and cheaper per gigabyte, but they lack ECC and won't work in a server board that requires registered memory. The real comparison is against other 64GB ECC RDIMMs, and Samsung's own modules are generally the gold standard. If you need this exact spec, you're not cross shopping with RGB desktop kits.
| Spec | Samsung 64GB DDR4 RDIMM | Kingston FURY Beast KF564C32BWEAK2-64 | G.Skill Trident Z5 Royal Series F5-6000J2636H32GX2-TR5NG | Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 | Crucial Pro Overclocking CP2K16G64C32U5B | KLEVV CRAS V RGB KD5KGUD80-60A300G-BLACK |
|---|---|---|---|---|---|---|
| Capacity | 64GB | 64GB | 64GB | 64GB | 32GB | 64GB |
| Kit | 1 x 64GB | 2 x 32GB | 2 x 32GB | 2 x 32GB | 2 x 16GB | 2 x 32GB |
| Memory Type | DDR4 | DDR5 | DDR5 | DDR5 | DDR5 | DDR5 |
| Speed Mts | 3200 | 6400 | 6000 | 6400 | 6400 | 6000 |
| Cas Latency | - | CL32 | CL26 | CL32 | CL32 | CL30 |
| Form Factor | RDIMM | UDIMM | UDIMM | UDIMM | UDIMM | UDIMM |
| Ecc | true | false | false | false | false | false |
| Compare | Compare | Compare | Compare | Compare |
| Producto | Speed | Feature | Latency | Capacity | Valoración social | Affordability |
|---|---|---|---|---|---|---|
| Samsung 64GB DDR4 RDIMM | 53.6 | 89.6 | 11.8 | 89.8 | 55.5 | 9 |
| Kingston FURY Beast KF564C32BWEAK2-64 Compare | 94.8 | 89.6 | 87.6 | 89.8 | 92.3 | 7.4 |
| G.Skill Trident Z5 Royal Series F5-6000J2636H32GX2-TR5NG Compare | 87.6 | 89.6 | 99 | 89.8 | 74.3 | 2.9 |
| Corsair VENGEANCE RGB CMH64GX5M2Y6400C32 Compare | 94.8 | 89.6 | 87.6 | 89.8 | 97.8 | 6.7 |
| Crucial Pro Overclocking CP2K16G64C32U5B Compare | 94.8 | 74.9 | 87.6 | 70.8 | 85.7 | 27.2 |
| KLEVV CRAS V RGB KD5KGUD80-60A300G-BLACK Compare | 87.6 | 89.6 | 87.6 | 89.8 | 85.7 | 9.2 |
Precio
Value & Pricing
This is not a budget part, and the affordability score of 9th percentile confirms it. In the US you're looking at around $999, but in Europe the price swings from €1,070 to €1,299 depending on the vendor. If you're in the EU, shop around because that's a €229 spread for the exact same stick. For a production server that needs maximum memory density, it's worth it. For a homelab on a budget, maybe not.
Amazon 1 oferta Desde 999 US$
Price History
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Overview
This is a 64GB stick of server memory, and it's exactly what it says on the tin. Samsung's M393A8G40BB4-CWE is a DDR4 ECC Registered RDIMM running at 3200 MT/s, and if you're building or upgrading a server, this is the kind of part you want. It's not flashy, it's not for gaming, and it will absolutely not fit in your desktop. But for the right machine, it's a rock solid workhorse.
Common Questions
Q: Will this work in my desktop PC?
No. This is ECC Registered memory for servers only. Your desktop board almost certainly doesn't support RDIMMs, and even if it did, you'd be wasting money on features you can't use.
Q: Can I mix this with my existing ECC unbuffered RAM?
Don't do it. This is ECC Registered, and it won't play nice with ECC Unbuffered, Load Reduced, or Non-ECC sticks. Match the exact type and ideally the exact part number for best results.
Q: Is 3200 MT/s fast enough for a server?
For most server workloads, absolutely. The ECC and capacity matter way more than raw speed. Unless you're running latency sensitive HPC jobs, you won't notice the difference.
Who Should Skip This
If you're looking for cheap RAM for a gaming rig or a budget workstation, this isn't it. Go grab a standard DDR4 or DDR5 kit from Kingston or Corsair instead. You'll save a ton of money and actually be able to use it in your machine.
Verdict
If you're building a server that needs serious memory capacity with ECC, this Samsung module is a no brainer. It's not the fastest, and it's not cheap, but it's reliable and dense. For anyone running virtualization, databases, or anything that needs to stay up for months at a time, this is the kind of part you buy and forget about. Just make sure your board actually supports RDIMMs before you click buy.
Usage Scores
- General60.1
- Budget65.6
- Gaming46.7
- Laptop45.1
- Server88.5
- Workstation63.9
