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White dual-fan graphics card, 260 by 130 by 52 millimetres, two-slot width

ONIX

ONIX LUMI Arc B580 8346-00278 graphics card

SKU CH-A9NM-9N73E MPN 8346-00278

A refurbished Intel Arc B580 graphics card with 12 GB GDDR6, 20 Xe-cores and a 2740 MHz core clock, cooled by dual fans in a white 2.2-slot ATX design

  • InterfacePCI Express 4.0 x8
  • Chipset ManufacturerIntel
  • GPU SeriesIntel Arc B-Series
  • GPUArc B580
  • Core Clock2740 MHz
  • Xe-cores20
  • 12 GB GDDR6 memory enables high-resolution textures
  • 20 Xe-cores at 2740 MHz core clock deliver strong compute throughput
  • 192-bit bus with 19000 MHz effective memory clock provides ample bandwidth
  • HDMI 2.1 and three DisplayPort 2.1 outputs drive up to four 8K displays
  • Dual-fan cooler fits 260 mm length and 2.2-slot width in ATX cases

Refurbished Intel Arc B580 graphics card

This ONIX LUMI card is a refurbished GPU built on the Intel Arc B580 chipset with 20 Xe-cores and a 2740 MHz core clock. It targets 1440p gamers and content creators who want modern media engines and 12 GB of GDDR6 memory on a PCI Express 4.0 x8 interface. The white dual-fan cooler fits a standard ATX slot.

Upgrade from 8 GB or older mid-range GPUs

Moving from an 8 GB card removes the texture-memory ceiling that forces quality cuts in current titles. The 192-bit bus and 19000 MHz effective clock deliver enough bandwidth for high-refresh 1440p play, while DirectX 12 Ultimate and OpenGL 4.6 support current API features. The jump is worth it when your present card stutters on 12 GB texture packs.

12 GB GDDR6 handles 1440p ultra and light 4K

The 12 GB frame buffer comfortably runs modern games at 1440p ultra settings and supports entry-level 4K workloads such as video editing timelines or compute tasks. At 203 W TDP with a single 8-pin connector and a 600 W PSU recommendation, power headroom is modest. Four display outputs (HDMI 2.1 plus three DisplayPort 2.1) drive multi-monitor setups up to 7680 x 4320.

Highlights

  • 12 GB GDDR6 memory enables high-resolution textures
  • 20 Xe-cores at 2740 MHz core clock deliver strong compute throughput
  • 192-bit bus with 19000 MHz effective memory clock provides ample bandwidth
  • HDMI 2.1 and three DisplayPort 2.1 outputs drive up to four 8K displays
  • Dual-fan cooler fits 260 mm length and 2.2-slot width in ATX cases

Specifications

BrandONIX
SeriesLUMI
Model8346-00278
Part Number8346-00278
InterfacePCI Express 4.0 x8
Chipset ManufacturerIntel
GPU SeriesIntel Arc B-Series
GPUArc B580
Core Clock2740 MHz
Xe-cores20
Effective Memory Clock19000 MHz
Memory Size12GB
Memory Interface192-Bit
Memory TypeGDDR6
DirectXDirectX 12 Ultimate
OpenGLOpenGL 4.6
Multi-Monitor Support4
HDMI1 x HDMI 2.1
DisplayPort3 x DisplayPort 2.1
ColorWhite
Max Resolution7680 x 4320
CoolerDouble Fans
Thermal Design Power203W
Recommended PSU Wattage600W
Power Connector8-Pin
Form FactorATX
Max GPU Length260 mm
Card Dimensions (L x H)260 x 130 x 52 mm
Slot Width2.2 Slots
Shipping weight1.16 kg
Package size371 × 196 × 80 mm

Questions about this item

Will the 260 mm length and 2.2 slot width fit my ATX case and motherboard spacing?

The card measures 260 mm long, 130 mm tall and 52 mm thick, occupying 2.2 slots; verify your case clearance and that adjacent PCIe slots stay free.

Which power connector does the 203 W TDP require and what PSU headroom is advised?

It needs a single 8‑pin PCIe power connector and a 600 W or larger PSU; connect the cable directly from the PSU, not via a daisy‑chain adapter.

How often should I clean the dual fans to keep the 203 W thermal load under control?

Use compressed air on the two fans every three to six months, depending on dust levels, to maintain airflow across the heatsink.

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