Is the RTX 5080 worth the extra over the Arc B580?

Only if you need 4K, ray tracing or GPU compute. At $1,999.99 versus $269.00, the 5080 costs about seven times as much. For 1080p gaming the Arc B580 covers most of the need.

Which is better for 1080p gaming?

The Arc B580. Reviewers call it solid at 1080p and a good value, and it will not be limited by its 190 W power draw or 12 GB of memory at that resolution.

Which is better for 4K or ray tracing?

The RTX 5080. Its 16 GB GDDR7, PCIe 5.0 link and DLSS 4 put it in a different tier, while reviewers flag ray tracing as the Arc B580's weak point.

Will the Arc B580 fit my case and power supply?

Likely yes. It is 272 mm long, draws 190 W and needs one 8-pin connector and a 600 W recommended PSU. Check the 272 mm length against your case.

Does the RTX 5080 need a bigger power supply?

Yes. It is a high-power flagship with a three-fan cooler, so plan on a strong PSU and good airflow. The Arc B580's 600 W recommendation is far easier to meet.

Which lasts longer before I need an upgrade?

The RTX 5080, by a wide margin. Its 16 GB GDDR7 and higher tier GPU will stay useful at 1440p and 4K far longer than a 12 GB entry card.

PNY GeForce RTX 5080 OC 16GB vs Intel Arc B580

These two cards are not in the same class. The Intel Arc B580 is a 12 GB, 190 W, 1440p-entry card at $269.00 as of November 3, 2026, and it is the sensible buy for a 1080p or light 1440p build on a budget. The PNY GeForce RTX 5080 OC is a 16 GB GDDR7 flagship at $1,999.99 at Best Buy as of November 6, 2026, roughly seven times the price, and only worth it if you need high-refresh 4K, heavy ray tracing or GPU compute.

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