Arc Pro B70 vs Radeon PRO W7800 48GB
With 48GB on board versus 32GB for the Arc Pro B70, the Radeon PRO W7800 48GB carries more headroom for large models and memory-hungry workloads. Its memory bandwidth is 42% higher (864 GB/s vs 608 GB/s), translating directly to faster inference throughput. Price-wise, the Arc Pro B70 undercuts the Radeon PRO W7800 48GB by $1,350 EUR.
Maximum Capacity Reached. Remove a model to add another. (2/2)
Comparable or lower specs
Arc Pro B70 vs Radeon PRO W7800 48GB: In-Depth Breakdown
VRAM: Arc Pro B70 vs Radeon PRO W7800 48GB
With 48GB of VRAM against the Arc Pro B70's 32GB, the Radeon PRO W7800 48GB has a 16GB edge. VRAM is what determines whether a model fits without quantization at all — a 70B-parameter model in FP16 needs around 140GB, and smaller models still benefit from spare capacity. That extra headroom lets the Radeon PRO W7800 48GB load bigger models and run larger production batch sizes.
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 Radeon PRO W7800 48GB delivers 864 GB/s versus 608 GB/s on the Arc Pro B70, a 42% edge. For models already loaded into VRAM, token generation speed scales closely with this number: the Radeon PRO W7800 48GB will produce tokens proportionally faster in bandwidth-bound workloads.
AI Training & Compute
FP32 throughput is the metric that matters most for training, scientific simulation, and rendering work. The Radeon PRO W7800 48GB posts 46.2 TFLOPS versus 22.9 TFLOPS on the Arc Pro B70, a 102% compute lead. Expect training jobs and heavy matrix math to finish proportionally sooner on the Radeon PRO W7800 48GB.
Price & Value
The Arc Pro B70 lists from $1,581 EUR, $1,350 EUR less than the Radeon PRO W7800 48GB at $2,931 EUR. For budget-constrained teams, the savings may outweigh the spec gap — especially if the smaller card covers your typical workload.
Which should you buy: Arc Pro B70 or Radeon PRO W7800 48GB?
Go with the Radeon PRO W7800 48GB if you need maximum capacity: it's ahead on VRAM, bandwidth, and compute, so it's the stronger fit for large models and training jobs. The Arc Pro B70 is the cheaper pick ($1,350 EUR less) — worth it if your models already fit within its 32GB and you're not running heavy inference volume.
Frequently Asked Questions
Can the Arc Pro B70 or Radeon PRO W7800 48GB run large language models?
Which is faster for LLM inference, the Arc Pro B70 or the Radeon PRO W7800 48GB?
Which is better for AI training?
Which should you buy: Arc Pro B70 or Radeon PRO W7800 48GB?
Technical Specifications Comparison
Architecture & Cores
| Specification | Arc Pro B70 | Radeon PRO W7800 48GB |
|---|---|---|
| Architecture | Xe2-HPG | RDNA 3 |
| CUDA Cores (Shading Units / Stream Processors) | 4,096 | 4,480✓ |
| Ray Tracing Cores | — | 70 |
Clock Speeds
| Specification | Arc Pro B70 | Radeon PRO W7800 48GB |
|---|---|---|
| Base Clock | — | 1,895 MHz |
| Boost Clock | — | 2,525 MHz |
Memory
| Specification | Arc Pro B70 | Radeon PRO W7800 48GB |
|---|---|---|
| VRAM Capacity | 32 GB | 48 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 256-bit | 384-bit✓ |
| Memory Speed | — | 18 Gbps |
| Bandwidth | 608 GB/s | 864 GB/s✓ |
Connectivity & Power
| Specification | Arc Pro B70 | Radeon PRO W7800 48GB |
|---|---|---|
| Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |
| TDP | 230 W✓ | 281 W |
| Power Connectors | — | 2x 8-pin |
| Released | Mar 2026 | Nov 2024 |
Workstation
| Specification | Arc Pro B70 | Radeon PRO W7800 48GB |
|---|---|---|
| FP32 (TFLOPS) | 22.9 TFLOPS | 46.2 TFLOPS✓ |
| ECC | Yes | Yes |
| NVLink | No | No |
| Form factor | dual-slot | dual-slot |