Arc B580 vs Radeon RX 7900 GRE
The Radeon RX 7900 GRE pulls ahead here — in a different league, about 95% ahead of the Arc B580.
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Radeon RX 7900 GRE vs Arc B580: In-Depth Breakdown
Performance: Radeon RX 7900 GRE vs Arc B580
The Radeon RX 7900 GRE is dramatically faster, around 95% ahead of the Arc B580. That gap is enough to move it up a tier: the Radeon RX 7900 GRE is comfortable at 4K with upscaling and native 1440p, while the Arc B580 is better matched to 1080p.
Power & Efficiency
At 190W vs 260W, the Arc B580 is the gentler load on your system. The Radeon RX 7900 GRE's extra power draw buys more performance per watt, not just more heat — worth it if your PSU has the headroom.
VRAM & Future-Proofing
The Radeon RX 7900 GRE carries 16GB versus 12GB on the Arc B580. The extra 4GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers.
Features & Ecosystem
Beyond raw numbers, the Arc B580 brings Intel XeSS upscaling and AV1 encoding, while the Radeon RX 7900 GRE offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: Arc B580 or Radeon RX 7900 GRE?
The Radeon RX 7900 GRE is the faster card by about 95%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.
Frequently Asked Questions
Is the Radeon RX 7900 GRE better than the Arc B580?
Which is better for 4K gaming, the Arc B580 or the Radeon RX 7900 GRE?
Does the Radeon RX 7900 GRE have enough VRAM advantage to matter?
Which should you buy: Arc B580 or Radeon RX 7900 GRE?
Technical Specifications Comparison
Architecture & Cores
| Specification | Arc B580 | Radeon RX 7900 GRE |
|---|---|---|
| Architecture | Battlemage | RDNA 3 |
| Process Node | TSMC N5 | TSMC N5 |
| CUDA Cores (Shading Units / Stream Processors) | 2,560 | 5,120✓ |
| Ray Tracing Cores | 20 | 80✓ |
| Tensor / AI Cores | 160 | 160 |
Clock Speeds
| Specification | Arc B580 | Radeon RX 7900 GRE |
|---|---|---|
| Base Clock | 2,670 MHz✓ | 1,287 MHz |
| Boost Clock | 2,850 MHz✓ | 2,245 MHz |
Memory
| Specification | Arc B580 | Radeon RX 7900 GRE |
|---|---|---|
| VRAM Capacity | 12 GB | 16 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 192-bit | 256-bit✓ |
| Memory Speed | 19 Gbps✓ | 18 Gbps |
| Bandwidth | 456 GB/s | 576 GB/s✓ |
Connectivity & Power
| Specification | Arc B580 | Radeon RX 7900 GRE |
|---|---|---|
| Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| TDP | 190 W✓ | 260 W |
| Power Connectors | 1x 8-pin | 2x 8-pin |
| Released | Dec 2024 | Feb 2024 |
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