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ASUS ROG STRIX Radeon RX 6600 XT graphics card with two axial-tech fans and vented backplate

ASUS

ASUS STRIX-RX6600XT-O8G-G graphics card

SKU CH-DH8Q-E1X6Q MPN STRIX-RX6600XT-O8G-G

Refurbished Radeon RX 6600 XT with 8 GB GDDR6, 2048 stream processors, 2607 MHz boost, PCIe 4.0, HDMI 2.1 and three DisplayPort 1.4a outputs

  • InterfacePCI Express 4.0
  • Chipset ManufacturerAMD
  • GPU SeriesAMD Radeon RX 6000 Series
  • GPURadeon RX 6600 XT
  • ArchitectureRDNA 2
  • Boost Clock2607 MHz
  • Boost clock of 2607 MHz drives high frame rates
  • 8 GB GDDR6 at 16 Gbps feeds the 128-bit bus
  • Axial-tech fans with dual ball bearings increase airflow and longevity
  • Dual BIOS switch selects Quiet or Performance profile instantly
  • HDMI 2.1 and three DisplayPort 1.4a outputs support 7680 x 4320 resolution

ROG STRIX RX 6600 XT 8GB GDDR6

The ASUS ROG STRIX Radeon RX 6600 XT is a PCI Express 4.0 graphics card built on AMD RDNA 2 architecture. It delivers a 2607 MHz boost clock, 2048 stream processors and 8GB of GDDR6 memory on a 128-bit interface running at 16 Gbps. The card targets 1080p gaming and multi-monitor productivity with four display outputs.

Upgrade from older 6GB or 4GB cards

Moving from a 6GB or 4GB board to this 8GB model removes a common VRAM bottleneck in modern titles at high texture settings. The RDNA 2 architecture adds DirectX 12 Ultimate support and hardware-accelerated ray tracing that earlier GCN-based cards lack. A 500W PSU and a single 8-pin connector make the swap straightforward for most mid-tower builds.

Sustained load behaviour with Axial-tech cooling

Axial-tech fans with dual ball bearings and a vented backplate exhaust heat away from the heatsink instead of recirculating it. Super Alloy Power II components and a 160W TDP keep power delivery stable during extended sessions. A hardware Dual BIOS switch lets you choose a quieter fan curve without software overhead.

Highlights

  • Boost clock of 2607 MHz drives high frame rates
  • 8 GB GDDR6 at 16 Gbps feeds the 128-bit bus
  • Axial-tech fans with dual ball bearings increase airflow and longevity
  • Dual BIOS switch selects Quiet or Performance profile instantly
  • HDMI 2.1 and three DisplayPort 1.4a outputs support 7680 x 4320 resolution

Specifications

BrandASUS
SeriesROG STRIX
ModelROG-STRIX-RX6600XT-O8G-GAMING
InterfacePCI Express 4.0
Chipset ManufacturerAMD
GPU SeriesAMD Radeon RX 6000 Series
GPURadeon RX 6600 XT
ArchitectureRDNA 2
Boost Clock2607 MHz
Stream Processors2048
Effective Memory Clock16 Gbps
Memory Size8GB
Memory Interface128-Bit
Memory TypeGDDR6
DirectXDirectX 12 Ultimate
OpenGLOpenGL 4.6
Multi-Monitor Support4
HDMI1 x HDMI 2.1
DisplayPort3 x DisplayPort 1.4a
Max Resolution7680 x 4320
CrossFireX SupportCrossfire Support for DirecX 12 and Vulkan
CoolerDouble Fans
Thermal Design Power160W
Recommended PSU Wattage500W
Power Connector1 x 8-pin
HDCP Ready2.3
FeaturesAxial-tech Fan Design features a smaller fan hub that facilitates longer blades and a barrier ring that increases downward air pressure.
Dual ball fan bearings can last up to twice as long as sleeve bearing designs.
Super Alloy Power II includes premium alloy chokes, solid polymer capacitors, and an array of high-current power stages.
Dual BIOS switch lets you toggle between Quiet and Performance BIOS profiles sans software.
Auto-Extreme Technology uses automation to enhance reliability.
A vented backplate prevents hot air from recirculating through the cooling array.
Form FactorATX
Max GPU Length243 mm
Card Dimensions (L x H)9.60" x 5.30"
Slot Width2.6 Slot
Shipping weight1.36 kg
Package size356 × 254 × 76 mm

Questions about this item

Will the 128-bit memory interface and dual-slot cooler fit in a standard mid-tower case?

The card uses a PCI Express 4.0 x16 slot and a dual-slot axial-tech cooler with two fans; measure your case clearance against the length of a typical ROG Strix dual-fan design.

Which 8-pin power connector and BIOS switch position should I use first?

Connect one 8-pin PCIe cable from a 500 W or larger PSU, then leave the Dual BIOS switch in the default Performance position; flip to Quiet only if you prefer lower fan speeds.

When should I expect to replace the dual ball-bearing fans or refresh thermal paste?

Dual ball bearings are rated to last up to twice as long as sleeve designs, so fan replacement is rarely needed; repaste only if GPU temperatures rise noticeably after several years.

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