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ASUS Radeon HD 5850 graphics card with dual-slot cooler and rear I/O bracket

ASUS

ASUS 5850 graphics card 1 GB DDR5 725 MHz PCIe 2.1 x16

SKU CH-ZAS5-RKHXV MPN 5850

Radeon HD 5850 GPU with 1 GB DDR5 memory at 725 MHz core clock, PCI Express 2.1 x16, HDMI, DisplayPort and dual-link DVI for up to three monitors

  • InterfacePCI Express 2.1 x16
  • Chipset ManufacturerAMD
  • GPU SeriesAMD Radeon HD 5000 series
  • GPURadeon HD 5850
  • Core Clock725 MHz
  • Memory Size1GB
  • DirectX 11.0 support enables modern graphics features
  • 1 GB DDR5 memory on a 256-bit bus handles large textures
  • Three-monitor output via HDMI, DisplayPort and dual-link DVI
  • PCI Express 2.1 x16 interface provides full bandwidth to the system
  • 725 MHz core clock drives the Radeon HD 5850 GPU

Core specification

The ASUS Radeon HD 5850 is a DirectX 11 graphics card built on a 256 bit memory bus with a 725 MHz core clock. It uses 1 GB of DDR5 SDRAM connected through a PCI Express 2.1 x16 interface. The card delivers a maximum resolution of 2560 x 1600 across three monitors.

Target audience and alternatives

This card suits owners of older systems that need a PCI Express 2.1 upgrade for multi-monitor desktop work or legacy DirectX 11 titles. It is not suitable for modern gaming, compute workloads or builds that require newer display standards or higher memory capacity.

Deciding specification

The single figure that determines fit is the 725 MHz core clock paired with 1 GB DDR5 on a 256 bit bus, which fixes performance at a level adequate for basic multi-display productivity but insufficient for current 3D applications.

Highlights

  • DirectX 11.0 support enables modern graphics features
  • 1 GB DDR5 memory on a 256-bit bus handles large textures
  • Three-monitor output via HDMI, DisplayPort and dual-link DVI
  • PCI Express 2.1 x16 interface provides full bandwidth to the system
  • 725 MHz core clock drives the Radeon HD 5850 GPU

Specifications

BrandASUS
SeriesHD 5000
InterfacePCI Express 2.1 x16
Chipset ManufacturerAMD
GPU SeriesAMD Radeon HD 5000 series
GPURadeon HD 5850
Core Clock725 MHz
Memory Size1GB
Memory TypeSDRAM
OpenGLDirectX 11.0
HDMIYes
DisplayPortYes
DVIYes
Dual-Link DVI SupportedYes

Questions about this item

What motherboard slot is required for the PCI Express 2.1 x16 interface on this card?

A PCI Express x16 slot, version 2.1 or later, provides the mechanical and electrical connection the card needs.

Will the 256 bit memory bus and 1 GB DDR5 frame buffer limit performance when paired with a newer CPU?

The 256 bit bus and 1 GB DDR5 memory are fixed hardware traits; they do not change with the CPU, so the card delivers its specified bandwidth regardless of the processor generation.

How can I verify the core is running at 725 MHz after installation?

Open a GPU monitoring utility such as GPU-Z or the AMD driver overlay and confirm the core clock reads 725 MHz under load.

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