NVIDIA RTX A4000
Expert rating7.2 / 10
- GPU Brand:
- NVIDIA
- VRAM:
- 16GB GDDR6
- Memory Type:
- GDDR6
- TDP:
- 140W
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Manufacturer: NVIDIA Last updated: 2026-09-12
NVIDIA RTX A4000 Review
The NVIDIA RTX A4000 is a single-slot Ampere workstation card with 16GB of ECC-capable VRAM, popular in CAD workstations and even repurposed for AI inference thanks to its VRAM-per-slot efficiency, and it remains a genuinely useful card years after launch.
Being single-slot at 140W means it fits in workstations where a dual-slot RTX 3070 simply won't, and the 16GB frame buffer lets it punch above its shader count for large scenes and model inference where capacity matters more than raw speed. It's slower than a GeForce RTX 3070 in pure rasterization but wins on VRAM headroom and certified drivers.
Performance & Real-World Use
6144 CUDA cores on GA104 puts the A4000 close to RTX 3070-class shader throughput, but the single-slot cooler and 140W limit mean it runs cooler and quieter than any similarly-specced GeForce card, which matters in dense multi-GPU workstation chassis.
Comparison to Alternatives
Against the catalog's RTX 3070, the GeForce card is faster in games but tops out at 8GB VRAM versus the A4000's 16GB, so for CAD, ML inference, or multi-app professional workloads the A4000 wins despite slower peak clocks. The RTX A5000 Laptop GPU already in the catalog is the mobile version of the tier above this; the A4000 is the desktop single-slot equivalent one rung down.
Specifications
Platform
| GPU Brand | NVIDIA |
|---|---|
| Board Partner | PNY / NVIDIA Reference |
Identity and type
| Series | RTX Ampere Generation |
|---|---|
| Tier | Mainstream |
Performance
| VRAM | 16 GB |
|---|---|
| Memory Type | GDDR6 |
| Boost Clock | 1560 MHz |
| Ray Tracing Support | Yes |
Physical & Power
| TDP | 140 W |
|---|---|
| Card Length | 242 mm |
| Slot Width | 1 |
Silicon
| Architecture | Ampere |
|---|---|
| Shader Units | 6144 |
Memory
| Memory Bus Width | 256 bit |
|---|
Power
| Power Connector | 1x 6-pin |
|---|
Host interface
| PCIe Generation | PCIe 4.0 x16 |
|---|
Market and workstation
| ECC Memory | Yes |
|---|
| Display Outputs | 4x Mini-DisplayPort 1.4 |
|---|
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating7.2 / 10
Still one of the best VRAM-per-slot workstation cards for CAD and inference work; not the pick for gaming, but excellent at what it's built for.
Best for
- CAD and BIM workstations needing single-slot cards
- Local AI/LLM inference where 16GB matters more than raw speed
- Multi-GPU rendering rigs where slot density counts
Not for
- Gaming builds (a GeForce card of similar price is faster)
- Anyone needing NVLink pooling
- Budget-conscious buyers who don't need ECC or certified drivers
FAQs
What are the key specifications of the NVIDIA RTX A4000?
The NVIDIA RTX A4000 is a graphics card from NVIDIA. Key specs: GPU Brand NVIDIA, Tier Mainstream, Board Partner PNY / NVIDIA Reference, VRAM 16GB GDDR6, Memory Type GDDR6.
Who is the NVIDIA RTX A4000 best suited to?
It suits cad and bim workstations needing single-slot cards, local ai/llm inference where 16gb matters more than raw speed, multi-gpu rendering rigs where slot density counts.
What are the drawbacks of the NVIDIA RTX A4000?
It is a poor fit for gaming builds (a geforce card of similar price is faster), anyone needing nvlink pooling, budget-conscious buyers who don't need ecc or certified drivers.