GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
The RTX 4000 SFF Ada Generation has more VRAM (20GB vs 6GB), making it better suited for large models and memory-intensive workloads. Its memory bandwidth is 46% higher (280 GB/s vs 192 GB/s), translating directly to faster inference throughput.
Maximum Capacity Reached. Remove a model to add another. (2/2)
Arc Pro A40 vs RTX 4000 SFF Ada Generation: In-Depth Breakdown
VRAM: Arc Pro A40 vs RTX 4000 SFF Ada Generation
The RTX 4000 SFF Ada Generation carries 20GB of VRAM versus 6GB on the Arc Pro A40. VRAM capacity is the primary constraint for running AI models without quantization — a 70B-parameter model in FP16 requires roughly 140GB, and even smaller models benefit from extra headroom. The 14GB advantage here means the RTX 4000 SFF Ada Generation can run larger models natively and handle bigger batch sizes in production.
Inference Speed: Memory Bandwidth
Memory bandwidth determines how quickly data is fed to the compute units — it's the main bottleneck for autoregressive inference (token generation in LLMs). The RTX 4000 SFF Ada Generation delivers 280 GB/s versus 192 GB/s on the Arc Pro A40, a 46% edge. For models already loaded into VRAM, token generation speed scales closely with this number: the RTX 4000 SFF Ada Generation will produce tokens proportionally faster in bandwidth-bound workloads.
AI Training & Compute
For model training, scientific simulation, and rendering, FP32 throughput is the key metric. The RTX 4000 SFF Ada Generation delivers 19.2 TFLOPS against 3.7 TFLOPS for the Arc Pro A40 — a 419% compute advantage. Training runs and heavy matrix operations will complete proportionally faster on the RTX 4000 SFF Ada Generation.
Which should you buy: Arc Pro A40 or RTX 4000 SFF Ada Generation?
The RTX 4000 SFF Ada Generation is the stronger choice for large-model workloads where VRAM is the bottleneck. The Arc Pro A40 is more economical, and sufficient if your models fit within its 6GB.