Arc B580
Arc A770
Arc B580 vs Arc A770
Which graphics card should you buy in 2026? Full spec comparison and analysis.
Our Pick: Arc B580
The Arc B580 wins this matchup with better gaming performance, stronger overall benchmarks, better value for money, lower price ($249 vs $349). At $249, it's also the more affordable option.
Performance Overview
Overall Performance
Gaming
Value for Money
Specifications Comparison
| Specification | Arc B580 | Arc A770 |
|---|---|---|
| MSRP | $249Win | $349 |
| VRAM | 12GB | 16GBWin |
| Memory Type | GDDR6 | GDDR6 |
| Boost Clock | 2800MHzWin | 2400MHz |
| Base Clock | 1700MHz | 2100MHzWin |
| Shader/Stream Processors | 320 | 512Win |
| Performance | 13.7TFLOPS | 17.2TFLOPSWin |
| TDP | 190WWin | 225W |
| Memory Bus | 192-bit | 256-bitWin |
| Bandwidth | 456GB/s | 560GB/sWin |
| Architecture | Xe2 (Battlemage) | Xe HPG |
| Process Node | 5nmWin | 6nm |
| RT Cores | 20 | 32Win |
| AI Upscaling | XeSS 2 | XeSS |
| Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| Power Connector | 1x 8-pin | 2x 8-pin |
| Card Length | 272mm | 267mmWin |
| Benchmark Score | 30/100Win | 28/100 |
| Gaming Score | 32/100Win | 30/100 |
| Value Score | 88/100Win | 60/100 |
Arc B580
MSRP: $249
Frequently Asked Questions
Is the Arc B580 better than the Arc A770?
The Arc B580 is the stronger card overall. It scores 30/100 in synthetic benchmarks and 32/100 in gaming versus 28/100 and 30/100 for the Arc A770. In practical terms, the Arc B580 is a 1080p high card while the Arc A770 targets 1080p high. The Arc B580 also has 12GB of GDDR6 on a 192-bit bus, giving it more headroom for high-res textures and future titles.
Which is the better value, Arc B580 or Arc A770?
At $249 vs $349, the Arc B580 is the better value pick here. Our value scores reflect this: Arc B580 gets 88/100 and Arc A770 gets 60/100. If you are building on a tighter budget, the Arc B580 at $249 is the smarter buy. If you can stretch to $349 and want the extra performance, the Arc A770 justifies its price for demanding workloads.
Can the Arc B580 or Arc A770 run games at 4K?
Neither card is an ideal 4K GPU. The Arc B580 can manage 4K at medium settings in less demanding titles, but both are really designed for 1080p gaming. If 4K is a priority, consider stepping up to a higher-tier card.
Arc B580 vs Arc A770 for 1440p gaming -- which is better?
At 1440p, the Arc B580 is more comfortable but you may need to dial settings down in newer AAA games. The Arc A770 will struggle at 1440p ultra in demanding titles. For a consistent 1440p experience, the Arc B580 is the safer choice.
What CPU should I pair with the Arc B580 or Arc A770?
To avoid bottlenecking the Arc B580 (gaming score 32/100), pair it with at least a Ryzen 5 7600 or Ryzen 5 9600X. For the Arc A770 (gaming score 30/100), a Ryzen 5 7600 or Ryzen 5 9600X will keep things balanced. Overspending on the CPU relative to the GPU -- or vice versa -- leaves performance on the table. As a rule of thumb, your CPU should cost roughly 40-60% of your GPU budget for a gaming-focused build.
Is the Arc B580 worth it in 2026?
The Arc B580 remains a solid buy in 2026. With 12GB of GDDR6 and Xe2 (Battlemage) architecture, it handles current games at 1080p high settings without issues. Support for XeSS 2 extends its lifespan further by boosting frame rates in supported titles. At $249 MSRP, it offers strong value and should stay relevant for at least another 2-3 years of AAA gaming.
Should I wait for next-gen or buy the Arc B580 now?
If you need a GPU now, the Arc B580 at $249 is a perfectly capable 1080p card. The latest GPUs (NVIDIA RTX 50-series Blackwell, AMD RDNA 4) are now available, so consider comparing against the newest options in your budget. The Arc B580's Xe2 (Battlemage) architecture and 12GB VRAM still have plenty of life left.
How much power does the Arc B580 vs Arc A770 use?
The Arc A770 draws 225W TDP versus 190W for the Arc B580, a difference of 35W. A 650W PSU should handle either card comfortably. The power difference is modest enough that PSU choice should not be a deciding factor between these two. The Arc B580 uses a 1x 8-pin connector while the Arc A770 needs 2x 8-pin.
How many FPS can I expect from the Arc B580 vs Arc A770?
Exact FPS varies by game and settings, but based on our gaming benchmark scores (Arc B580: 32/100, Arc A770: 30/100), the Arc B580 typically delivers 7% more frames than the Arc A770 at the same resolution and settings. In popular titles at 1080p, the Arc B580 with its 13.7 TFLOPS of compute power and 456 GB/s memory bandwidth pushes well above 60 FPS. Enabling XeSS 2 upscaling can boost that by another 30-50% with minimal visual quality loss.