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ASRock Radeon RX 6600 Challenger D dual-fan graphics card, black shroud, backplate, one HDMI, three DisplayPorts

ASRock

ASRock Radeon RX 6600 Challenger D 8GB graphics card

SKU CH-MRCW-NCNF5

Radeon RX 6600 GPU with 8GB GDDR6 memory on a 128-bit bus, 1792 stream processors, boost clock of 2491 MHz, PCI Express 4.0 interface, one HDMI 2.1 and three DisplayPort 1.4 outputs, dual-fan

  • InterfacePCI Express 4.0
  • Chipset ManufacturerAMD
  • GPU SeriesAMD Radeon RX 6000 Series
  • GPURadeon RX 6600
  • Core Clock1626 MHz
  • Game Clock2044 MHz
  • 8 GB GDDR6 memory delivers high-resolution texture headroom
  • Boost clock up to 2491 MHz for responsive 1080p gaming
  • 1792 stream processors handle modern DirectX 12 Ultimate titles
  • PCI Express 4.0 interface provides full bandwidth on current platforms
  • HDMI 2.1 plus three DisplayPort 1.4 outputs drive up to four displays

8GB GDDR6 for 1080p gaming

The ASRock Radeon RX 6600 Challenger D 8GB is a PCI Express 4.0 graphics card built on the AMD Radeon RX 6000 Series architecture. It targets players who want solid 1080p performance in modern titles without stepping up to higher-tier pricing. The Navi 23 GPU delivers 1792 stream processors with a game clock of 2044 MHz and a boost clock of 2491 MHz. DirectX 12 Ultimate and OpenGL 4.6 support ensure compatibility with current APIs.

8GB 128-bit memory and clock headroom

The card pairs 8GB of GDDR6 memory with a 128-bit bus running at an effective 14000 MHz. This configuration handles high-texture 1080p gaming comfortably and can manage entry-level 1440p in less demanding titles. The 128-bit interface becomes the limiting factor when games push memory bandwidth heavily at higher resolutions or with maximum texture packs. The 500 W recommended power supply and single 8-pin connector keep system requirements modest.

Four-display output via HDMI 2.1 and DisplayPort 1.4

One HDMI 2.1 port and three DisplayPort 1.4 connectors drive up to four monitors simultaneously at a maximum resolution of 7680×4320. This layout suits multi-monitor productivity setups or surround gaming without adapters. HDCP support protects premium video playback across all outputs. The dual-fan cooler maintains thermal performance within the 269×132×41 mm form factor.

Highlights

  • 8 GB GDDR6 memory delivers high-resolution texture headroom
  • Boost clock up to 2491 MHz for responsive 1080p gaming
  • 1792 stream processors handle modern DirectX 12 Ultimate titles
  • PCI Express 4.0 interface provides full bandwidth on current platforms
  • HDMI 2.1 plus three DisplayPort 1.4 outputs drive up to four displays

Specifications

BrandASRock
SeriesChallenger
ModelRX6600 CLD 8G
InterfacePCI Express 4.0
Chipset ManufacturerAMD
GPU SeriesAMD Radeon RX 6000 Series
GPURadeon RX 6600
Core Clock1626 MHz
Game Clock2044 MHz
Boost Clock2491 MHz
Stream Processors1792
Effective Memory Clock14000 MHz
Memory Size8GB
Memory Interface128-Bit
Memory TypeGDDR6
DirectXDirectX 12 Ultimate
OpenGLOpenGL 4.6
Multi-Monitor Support4
HDMI1 x HDMI 2.1
DisplayPort3 x DisplayPort 1.4
Max Resolution7680 x 4320
CoolerDouble Fans
Recommended PSU Wattage500W
Power Connector8-Pin
HDCP ReadyYes
Max GPU Length269 mm
Card Dimensions (L x H)269×132 mm
Slot Width2 Slots

Questions about this item

Will the RX 6600 Challenger D run in my older motherboard that only has PCIe 3.0 slots?

The card uses a PCI Express 4.0 x16 interface and will operate at PCIe 3.0 speeds when installed in a 3.0 slot, so it remains compatible with older motherboards.

How can I verify the card is hitting its 2491 MHz boost clock and 14000 MHz memory speed after installation?

Use monitoring software such as AMD Radeon Software or GPU-Z to observe real-time core and memory frequencies while running a 3D workload.

Does the box include the 8-pin power cable or do I need to buy one separately?

The card requires an 8-pin power connector; the cable itself comes from your power supply, so ensure your PSU has an available 8-pin PCIe lead.

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