Which is faster for gaming, Arc B580 (12GB) or Arc A770 (16GB)?

In 1440p Ultra gaming benchmarks, the Arc B580 (12GB) is approximately 7.7% faster (84 FPS vs 78 FPS).

How much power and what PSU is needed for Arc B580 (12GB) vs Arc A770 (16GB)?

The Arc B580 (12GB) has a rated TDP of 190W and requires a recommended 550W power supply. In contrast, the Arc A770 (16GB) has a TDP of 225W and recommends a 600W PSU.

Does Arc B580 (12GB) or Arc A770 (16GB) offer better price-to-performance value?

Based on current live market pricing, the Arc B580 (12GB) offers superior value at $2.98 per 1440p frame compared to $3.59 on the Arc A770 (16GB).

Real Gaming Speeds · Side-by-Side Comparison

Arc B580 (12GB) vs Arc A770 (16GB)

Real gaming speeds (average FPS), memory size, power needs, and price-to-performance across 1080p, 1440p, and 4K.

Intel ✓ Tested Speeds

Arc B580 (12GB)

💾 12GB GDDR6 ⚡ 190W $250

Intel ✓ Tested Speeds

Arc A770 (16GB)

💾 16GB GDDR6 ⚡ 225W $280

🎯 The Quick Answer: Which Should You Buy?

The Arc B580 (12GB) is the clear winner here. It runs about 7.7% faster in 1440p gaming (84 FPS vs 78 FPS) and costs about $30 less right now. You get noticeably smoother gameplay and better value for your money.

📊 Real-World Gaming Speeds (Average FPS)

Tested across demanding modern games. 60+ FPS represents smooth, enjoyable gameplay.

1080p Ultra Preset (Full HD) Delta: +10.7%

Arc B580 (12GB) 124 FPS

Arc A770 (16GB) 112 FPS

1440p Ultra Preset (QHD Resolution) Delta: +7.7%

Arc B580 (12GB) 84 FPS

Arc A770 (16GB) 78 FPS

4K Ultra Preset (3840 x 2160) Delta: +7.1%

Arc B580 (12GB) 45 FPS

Arc A770 (16GB) 42 FPS

🎮 How We Test Real Gaming Speeds

All gaming framerates (FPS) are measured across popular modern games (including Cyberpunk 2077, Black Myth: Wukong, Red Dead Redemption 2, and Forza Horizon 5) on a standardized gaming PC. Speeds are shown in native resolution without upscaling tricks, giving you honest, real-world numbers.

Tested speeds are calibrated with trusted testing lab records from Hardware Unboxed, Gamers Nexus, and TechPowerUp.

⚙️ Specs Side-by-Side

Specification	Arc B580 (12GB)	Arc A770 (16GB)
Testing Status	✓ Tested in Real Games	✓ Tested in Real Games
Architecture / Generation	Xe2 Battlemage (4nm)	Alchemist (6nm)
Memory (VRAM)	12GB GDDR6	16GB GDDR6
Memory Bus Width	192-bit	256-bit
Power Consumption (TDP)	190 Watts	225 Watts
Recommended Power Supply	550W PSU	600W PSU
Original Retail Price (MSRP)	$249 USD	$349 USD
Current Store Price	$249.99	$279.99
Cost-per-Frame (Bang for Buck)	$2.98 / FPS	$3.59 / FPS

Why Choose Arc B580 (12GB)?

✓ Runs games about 7.7% faster on 1440p monitors (84 vs 78 FPS).
✓ Uses 35W less power (190W vs 225W), running cooler and quieter.
✓ Costs about $30 less based on current store prices.

Why Choose Arc A770 (16GB)?

✓ Has 16GB of memory (+4GB more than Arc B580 (12GB)), giving you more headroom for high-res textures.
✓ Wider 256-bit memory bus handles high-resolution graphics more easily.

Current Prices & Availability