RTX 4070
Arc B580
RTX 4070 vs Arc B580
Which graphics card should you buy in 2026? Full spec comparison and analysis.
Our Pick: RTX 4070
The RTX 4070 wins this matchup with better gaming performance, stronger overall benchmarks. While it costs $300 more, the performance premium is worth it for most users.
Performance Overview
Overall Performance
Gaming
Value for Money
Specifications Comparison
| Specification | RTX 4070 | Arc B580 |
|---|---|---|
| MSRP | $549 | $249Win |
| VRAM | 12GB | 12GB |
| Memory Type | GDDR6X | GDDR6 |
| Boost Clock | 2475MHz | 2800MHzWin |
| Base Clock | 1920MHzWin | 1700MHz |
| Shader/Stream Processors | 5888Win | 320 |
| Performance | 29.1TFLOPSWin | 13.7TFLOPS |
| TDP | 200W | 190WWin |
| Memory Bus | 192-bit | 192-bit |
| Bandwidth | 504GB/sWin | 456GB/s |
| Architecture | Ada Lovelace | Xe2 (Battlemage) |
| Process Node | 4nmWin | 5nm |
| RT Cores | 46Win | 20 |
| AI Upscaling | DLSS 3.5 | XeSS 2 |
| Interface | PCIe 4.0 x16 | PCIe 4.0 x8 |
| Power Connector | 1x 8-pin | 1x 8-pin |
| Card Length | 240mmWin | 272mm |
| Benchmark Score | 44/100Win | 30/100 |
| Gaming Score | 47/100Win | 32/100 |
| Value Score | 65/100 | 88/100Win |
RTX 4070
MSRP: $549
Frequently Asked Questions
Is the RTX 4070 better than the Arc B580?
The RTX 4070 is the stronger card overall. It scores 44/100 in synthetic benchmarks and 47/100 in gaming versus 30/100 and 32/100 for the Arc B580. In practical terms, the RTX 4070 is a 1440p medium / 1080p ultra card while the Arc B580 targets 1080p high. The RTX 4070 also has 12GB of GDDR6X on a 192-bit bus, giving it more headroom for high-res textures and future titles.
Which is the better value, RTX 4070 or Arc B580?
The RTX 4070 costs 120% more for about 47% more performance. The Arc B580 at $249 offers noticeably better performance per dollar. Our value scores reflect this: RTX 4070 gets 65/100 and Arc B580 gets 88/100. If you are building on a tighter budget, the Arc B580 at $249 is the smarter buy. If you can stretch to $549 and want the extra performance, the RTX 4070 justifies its price for demanding workloads.
Can the RTX 4070 or Arc B580 run games at 4K?
Neither card is an ideal 4K GPU. The RTX 4070 can manage 4K at medium settings in less demanding titles, but both are really designed for 1440p or 1080p gaming. If 4K is a priority, consider stepping up to a higher-tier card.
RTX 4070 vs Arc B580 for 1440p gaming -- which is better?
At 1440p, the RTX 4070 is more comfortable but you may need to dial settings down in newer AAA games. The Arc B580 will struggle at 1440p ultra in demanding titles. For a consistent 1440p experience, the RTX 4070 is the safer choice.
What CPU should I pair with the RTX 4070 or Arc B580?
To avoid bottlenecking the RTX 4070 (gaming score 47/100), pair it with at least a Ryzen 5 7600 or Ryzen 5 9600X. For the Arc B580 (gaming score 32/100), 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 RTX 4070 worth it in 2026?
The RTX 4070 remains a solid buy in 2026. With 12GB of GDDR6X and Ada Lovelace architecture, it handles current games at 1440p medium / 1080p ultra settings without issues. Support for DLSS 3.5 extends its lifespan further by boosting frame rates in supported titles. At $549 MSRP, it is on the pricier side, but you are paying for top-tier performance that will age gracefully.
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 RTX 4070 vs Arc B580 use?
The RTX 4070 draws 200W TDP versus 190W for the Arc B580, a difference of 10W. 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 RTX 4070 needs 1x 8-pin.
How many FPS can I expect from the RTX 4070 vs Arc B580?
Exact FPS varies by game and settings, but based on our gaming benchmark scores (RTX 4070: 47/100, Arc B580: 32/100), the RTX 4070 typically delivers 47% more frames than the Arc B580 at the same resolution and settings. In popular titles at 1440p or 1080p, the RTX 4070 with its 29.1 TFLOPS of compute power and 504 GB/s memory bandwidth pushes well above 60 FPS. Enabling DLSS 3.5 upscaling can boost that by another 30-50% with minimal visual quality loss.