[ GUNNIR // INDIVIDUAL BOARD RECORD ]
GUNNIR Intel Arc B580 Index 12G
A model-specific desktop add-in board using Intel Arc B580. This record separates the named board’s power, dimensions, cooling and ports from specifications shared by the underlying Intel GPU.
Recorded board specifications
| Exact board SKU | B580 Index 12G — GUNNIR Intel Arc B580 Index 12G |
|---|---|
| GPU / architecture | Arc B580 (BMG-G21); Xe2-HPG (Battlemage), 20 Xe2 cores / 2,560 vector engines |
| Board clock | 2,670 MHz GPU clock |
| Dedicated VRAM | 12 GB GDDR6, 192-bit |
| Host bus | PCI Express 4.0 x8 |
| Board power / connectors | 190 W total board power; 1 × 8-pin PCIe auxiliary input |
| Display outputs | 3 × DisplayPort 2.1; 1 × HDMI 2.1a; up to four displays subject to system and display configuration |
| Card dimensions | 244 × 111 × 40 mm (L × H × thickness); dual-slot |
| Cooling / physical design | Dual-fan GUNNIR Icicle cooling system |
| Driver / platform compatibility | Windows 10/11 64-bit with a supported Intel Arc driver. Enable UEFI Resizable BAR where available and verify board clearance and PSU wiring; check Intel’s release notes for the current OS/driver combination. Linux support depends on kernel, Mesa and distribution versions. |
Power, connectors, outputs and dimensions identify this maker’s board and are not interchangeable with other cards using the same GPU. Confirm the exact retail revision, case clearance, PSU capacity and auxiliary cabling against the cited board documentation.
Architecture and compatibility notes
Intel Arc B-series desktop graphics uses the Xe2-HPG (Battlemage) architecture. 12 GB GDDR6, 192-bit and the board’s PCI Express link are dedicated card resources; the host platform determines the negotiated bus speed and width. Resizable BAR support is a platform feature, not a GPU power connector.
Windows 10/11 64-bit with a supported Intel Arc driver. Enable UEFI Resizable BAR where available and verify board clearance and PSU wiring; check Intel’s release notes for the current OS/driver combination. Linux support depends on kernel, Mesa and distribution versions.
Sources & further reading
- GUNNIR — Intel Arc B580 Index 12GGUNNIR’s model-specific product page.
- Intel ARK — Arc B-Series GraphicsIntel’s official Arc B-series GPU-family specifications.
- TechPowerUp — GUNNIR Arc B580 Index specificationsSupplemental board-dimension, power and connector cross-check.
- Intel — Arc graphics Windows driverOfficial driver download and release notes; confirm the supported operating-system version and GPU list before installing.
- Intel Support — Resizable BAR on Arc discrete graphicsPlatform setup guidance. CPU, motherboard firmware and UEFI configuration determine whether Resizable BAR is available.
- Tech Unsealed — I Finally Got the GUNNIR Intel Arc B580! | Full Unboxing & First LookIndependent video review; treat as supplementary context, not primary manufacturer documentation.