OWC 1024GB (8x128GB) DDR5-4800 CL40 RDIMM (OWC4R8D54R41TBK-B894-SF)
The 1TB kit of eight 128GB DDR5 RDIMM modules runs at 4800 MT/s with CL40 latency and ECC registered support, built for HP ProLiant Gen11 and Dell PowerEdge servers. It meets JEDEC and RoHS standards, backed by a lifetime warranty and free technical support from OWC. Best for server administrators upgrading HP ProLiant DL385 Gen11 or Dell PowerEdge R960 systems to maximize memory capacity.
Resumen
The 30-Second Version
1TB of ECC Registered DDR5 for servers that need to swallow massive datasets. If your motherboard doesn't say ProLiant or PowerEdge, walk away.
Pros & Cons
Ventajas
- 1TB capacity is the absolute best right now 100th
- ECC Registered for real server reliability 99th
- Compatible with HP ProLiant Gen11 and Dell PowerEdge R760xa/R860/R960 68th
- Limited lifetime warranty with advanced replacement
Desventajas
- CL40 latency is a weak spot compared to enthusiast kits
- Price is dead last for affordability, this is a serious investment
- Zero compatibility with standard desktops
- 4800 MT/s speed is just middle of the pack
Las pruebas
Performance
The capacity here is the absolute best right now, top of the charts across our entire database. 1TB of ECC Registered DDR5 is serious enterprise territory. The 4800 MT/s speed is solid but not a standout, and the CL40 latency falls behind most enthusiast kits. But for server workloads, stability and error correction matter way more than chasing low latency. The 4Rx4 configuration means you're getting maximum density per stick, which is exactly what you want when you're populating a server with 8 DIMMs.
Specifications
Full Specifications
Memory
| Type | DDR5 |
| Form Factor | RDIMM |
| Total Capacity | 1048576 |
| Modules | 8 |
| Per Module | 131072 |
| Pins | 288 |
| Rank | 4Rx4 |
Performance
| Speed | 4800 |
| CAS Latency | 40 |
| Timings | 40-38400 |
| Voltage | 1.1 |
Class
| ECC | Yes |
| Registered | Yes |
Features
| RGB | No |
| Heat Spreader | Yes |
vs Competition
The Kingston FURY Beast and G.Skill Trident Z5 Royal are faster and cheaper, but they're desktop kits. They won't even fit in the same conversation. The Crucial Pro Overclocking kit is also desktop-focused. The Team Group T-CREATE EXPERT is the closest in spirit, aimed at creators and workstations, but it's still not ECC Registered server memory. If you need server RAM, none of these competitors matter. If you don't need server RAM, this OWC kit is completely irrelevant to you.
| Spec | OWC 1024GB DDR5 RDIMM | NEMIX RAM 512GB | OWC OWC4R8D54R41TBK-B891-SF |
|---|---|---|---|
| Capacity | 1024GB | 512GB | - |
| Kit | 8 x 128GB | 4 x 128GB | - |
| Memory Type | DDR5 | DDR5 | - |
| Speed Mts | 4800 | 5600 | - |
| Cas Latency | CL40 | CL46 | - |
| Form Factor | RDIMM | RDIMM | - |
| Ecc | true | true | - |
| Compare | Compare |
| Producto | Speed | Feature | Latency | Capacity | Valoración social | Affordability |
|---|---|---|---|---|---|---|
| OWC 1024GB DDR5 RDIMM | 68 | 99.3 | 17.6 | 99.6 | 47.8 | 0.4 |
| NEMIX RAM 512GB Compare | 77.8 | 98.2 | 22.8 | 99.2 | 61.6 | 0.5 |
| OWC OWC4R8D54R41TBK-B891-SF Compare | 1.9 | 18.3 | 1.9 | 1 | 0 | 0.5 |
Precio
Value & Pricing
At $41,475 USD, this is not a casual purchase. But if you're speccing out a server that needs 1TB of RAM, you're already spending serious money on the rest of the hardware. OWC's lifetime warranty and advanced replacement program take some of the sting out. For the right workload, this is worth every penny. For anything else, it's a very expensive paperweight.
Amazon 1 oferta Desde 8.928.284 JPY
Seguimos los precios de este producto desde el 20 jul 2026. El gráfico aparecerá cuando tengamos más datos.
Leer más
Overview
This is a 1TB RAM kit for servers, and it's not messing around. Eight 128GB DDR5 ECC Registered DIMMs running at 4800 MT/s. If you're running an HP ProLiant Gen11 or a Dell PowerEdge R760xa, this is the kind of upgrade that makes your infrastructure problems disappear. The one thing to know? This is not for your gaming rig. Not even close.
Common Questions
Q: Will this work in my gaming PC?
No. This is ECC Registered memory for servers and workstations. Your desktop motherboard won't even recognize it. You want unbuffered DDR5 instead.
Q: Can I mix this with my existing server RAM?
Don't. OWC explicitly says you can't mix this with unbuffered or ECC Load Reduced memory. Match the type exactly or you're asking for stability problems.
Q: Is 4800 MT/s fast enough for a server?
For most server workloads, yes. Servers care more about capacity and reliability than raw speed. The ECC error correction is doing more for you than an extra 800 MT/s would.
Who Should Skip This
If you're building a gaming PC or a standard desktop workstation, this isn't it. Go get a Kingston FURY Beast or G.Skill Trident Z5 kit instead. You'll save thousands and actually be able to use the RAM you bought.
Verdict
If you're running an HP ProLiant Gen11 or Dell PowerEdge R760xa and need maximum memory density, this OWC kit is the obvious choice. The capacity is unmatched, the compatibility is specific and well-documented, and the warranty is solid. Just make sure you actually need ECC Registered server memory before you click buy.
Usage Scores
- General65.1
- Budget61.1
- Gaming49.6
- Laptop48.4
- Server91.5
- Workstation69.9
