LenovoThinkSystem SR665 V3
A 2U server with one or two AMD EPYC processors of up to 160 cores, up to 6 TB of memory and room for seven single-slot GPUs or three double-width ones. Lenovo uses it as the base of Hybrid AI 241, its low-cost configuration for image and video AI.
Rack 2UWhat it supports
The SR665 V3 is built to order: these are its limits according to Lenovo's guide. Lenovo Press product guide Not sure what to order? Try our server configurator.
- Power
- Two 750 to 2,600 W power supplies, Platinum or Titanium, or 1,100 W at -48 V DC
- Cooling
- Air, with optional Neptune Core for the processors
- Management
- XClarity Controller 2
- Operating systems
- RHEL, SLES, Ubuntu, Windows Server and VMware ESXi
- Warranty
- 1 or 3 years depending on the model, with an on-site engineer next business day
Image, video and more in 2U
It suits video analytics, computer vision or rendering, with several workloads at once spread across its GPUs, or a server that runs a few GPUs alongside virtual machines and a database. With up to 40 × 2.5" drives, it also works as a storage node.
For a language model with RAG on a single server, Lenovo proposes Hybrid AI 221: two 96 GB RTX PRO 6000 cards in an SR650a V4 or an SR675 V3. If you'd rather use this server, it takes three 96 GB RTX PRO 6000 Blackwell Max-Q Workstation Edition cards.
What we do
We deliver it with RHEL, Ubuntu, SLES, Windows Server or VMware ESXi, with the NVIDIA drivers and whatever runs on top: your vision or video models, Kubernetes with the GPU Operator, or vLLM if you also serve a language model. More on this in our AI services.
Supported GPUs
| GPU | Memory | How many |
|---|---|---|
| NVIDIA RTX PRO 4500 Blackwell | 32 GB | Up to 4 |
| NVIDIA L4 | 24 GB | Up to 7, single-slot |
| NVIDIA L40S | 48 GB | Up to 3, double-width |
| NVIDIA RTX PRO 6000 Max-Q Workstation | 96 GB | Up to 3, double-width, at 300 W |
All are air-cooled. For four server-edition RTX PRO 6000 GPUs you need the SR650a V4, which carries the GPUs at the front.
What your data centre needs
It takes 2U and is air-cooled with up to six fans, with Neptune Core as an option for the processors. It runs on two power supplies from 750 to 2,600 W, or -48 V DC; Hybrid AI 241 ships with two 1,800 W units.
Hybrid AI 241: image and video on a single server
This is the configuration Lenovo offers, with lower power draw and a lower price, for running several image or video workloads at once, each on its own GPU. The name comes from what's inside: two processors, four GPUs and one network adapter.
- Processor
- 2 AMD EPYC 933532 cores each
- Memory
- 256 GB8 × 32 GB DDR5 modules at 6400 MHz
- GPU
- 4 NVIDIA RTX PRO 4500 Blackwell32 GB each
- Storage
- 2 × 3.84 TB NVMePlus 2 × 960 GB M.2 for the operating system
- Network
- 2 × 25 GbE portsNVIDIA ConnectX-6 Lx
- Power
- 2 × 1,800 W power suppliesPlatinum
Compared with the rest of the family
| Model | What it has | When to choose it |
|---|---|---|
| ThinkSystem SR650a V4 | Up to 4 RTX PRO 6000 · Intel Xeon 6 | The entry point: one to four GPUs in 2U, with Intel. |
| ThinkSystem SR675 V3 | Up to 8 PCIe GPUs · AMD EPYC | Up to eight GPUs with AMD, for several models or teams at once. |
| ThinkSystem SR680a V4 | NVIDIA HGX B300 · 8 GPUs | Eight B300s linked by NVLink, for training and serving large models. |
| ThinkSystem SR680a V3 with B200 | NVIDIA HGX B200 · 8 GPUs | The previous HGX, also air-cooled, if your model fits comfortably in 180 GB per GPU. |
| ThinkSystem SR780a V3 | NVIDIA HGX B200 · liquid-cooled | The same eight B200s in 5U, if your data centre has a water loop. |
What the delivery includes
From the factory
- Server built to your configuration by Lenovo
- 1- or 3-year warranty depending on the model (3 on the HGX servers), with an on-site engineer next business day
From us
- GPU, memory and network sizing based on your model
- Rack mounting, XClarity and up-to-date firmware
- Operating system, NVIDIA drivers and the AI stack
- Testing with your workload before it goes into production
If you need it
- 24×7 on-call support with SLA
- Lenovo warranty upgrades: 4- or 2-hour response, or one or two extra years
How we build it
What runs on top of these servers, explained in detail:
Support and training for your team
Questions about the ThinkSystem SR665 V3
SR665 V3 or SR650a V4?
The SR665 V3 is a general-purpose 2U AMD server that takes GPUs of up to 350 W, and in return offers far more drive bays and slots. The SR650a V4 is built for GPUs: it carries up to four RTX PRO 6000 cards at the front. For a large model with many users, the SR650a V4; for several image or video workloads, or modest AI alongside other workloads, the SR665 V3.
What is Hybrid AI 241 for?
Lenovo positions it for image and video AI with low power draw and a low price: four independent GPUs let you run several workloads at once without splitting any of them. For a language model with RAG on a single server it recommends Hybrid AI 221, with two 96 GB RTX PRO 6000 cards.
What warranty does it come with?
One or three years depending on the model, with an on-site engineer next business day. Hybrid AI 241 is ordered on the three-year-warranty model. Beyond that, we can provide our own 24×7 on-call support with an SLA.
Is the SR665 V3 right for what you're building?
Tell us what you want to run, how many cameras or users you have and what else will run on the server, and we'll come back with the configuration, the price and a confirmed lead time.
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