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XFX Speedster Merc 308 Radeon RX 6650 XT graphics card with triple fans and silver shroud

XFX

XFX RX-665X8TBDY Radeon RX 6650 XT graphics card

SKU CH-ZR7D-06YKX MPN RX-665X8TBDY

Refurbished RDNA 2 GPU with 8GB GDDR6, 2048 stream processors and boost clock of 2694 MHz for 1440p gaming

  • InterfacePCI Express 4.0
  • Chipset ManufacturerAMD
  • GPU SeriesAMD Radeon RX 6000 Series
  • GPURadeon RX 6650 XT
  • ArchitectureRDNA 2
  • Core Clock2192 MHz
  • 8 GB GDDR6 memory at 17.5 Gbps feeds high-resolution textures
  • Boost clock reaches 2694 MHz for strong 1440p frame rates
  • PCI Express 4.0 interface doubles bandwidth over 3.0
  • Triple-fan cooler keeps thermals in check under load
  • HDMI 2.1 plus three DisplayPort 1.4 outputs drive 8K displays

XFX Speedster Merc 308 Radeon RX 6650 XT 8GB

The XFX Speedster Merc 308 Radeon RX 6650 XT is a refurbished graphics card built on the RDNA 2 architecture for 1080p and 1440p gaming. It uses a PCI Express 4.0 interface and requires a motherboard with an x16 slot plus a 500 W power supply. The card targets players who want high frame rates in modern titles without moving to a larger GPU tier.

Sustained load behaviour with triple-fan cooler

Under extended load the Boost Clock of 2694 MHz and Game Clock of 2523 MHz are maintained by the triple-fan cooler design. The 8 GB GDDR6 frame buffer runs at 17.5 Gbps across a 128-Bit bus to feed the 2048 stream processors. DirectX 12 Ultimate support keeps the pipeline full during long sessions at up to 7680 x 4320 resolution.

Installation notes and common issues

Installation follows the standard PCI Express 4.0 x16 process with one 8-pin power connector typical for this board. The 1 x HDMI 2.1 and 3 x DisplayPort 1.4 outputs cover most monitor configurations. Builders must verify case length clearance for the triple-fan shroud and confirm the power supply delivers 500 W with the required cable. Supported operating systems include Linux and Windows 10/11 64-bit.

Points forts

  • 8 GB GDDR6 memory at 17.5 Gbps feeds high-resolution textures
  • Boost clock reaches 2694 MHz for strong 1440p frame rates
  • PCI Express 4.0 interface doubles bandwidth over 3.0
  • Triple-fan cooler keeps thermals in check under load
  • HDMI 2.1 plus three DisplayPort 1.4 outputs drive 8K displays

Caractéristiques

BrandXFX
SeriesSPEEDSTER MERC308
ModelRX-665X8TBDY
InterfacePCI Express 4.0
Chipset ManufacturerAMD
GPU SeriesAMD Radeon RX 6000 Series
GPURadeon RX 6650 XT
ArchitectureRDNA 2
Core Clock2192 MHz
Game Clock2523 MHz
Boost Clock2694 MHz
Stream Processors2048
Effective Memory Clock17.5 Gbps
Memory Size8GB
Memory Interface128-Bit
Memory TypeGDDR6
DirectXDirectX 12 Ultimate
HDMI1 x HDMI 2.1
DisplayPort3 x DisplayPort 1.4
Max Resolution7680 x 4320
Virtual Reality ReadyYes
CoolerTriple Fans
System RequirementsPCI Express compatible motherboard with one x16 PCIe slot
Minimum 500W or greater power supply
NOTE: Minimum recommended system power supply wattage is based on the specific graphics card and the typical power requirements of other system components. Your system may require more or less power. OEM and other pre-assembled PCs may have different power
Minimum 8GB of system memory. Recommended 16GB
Supported operating systems include Linux, Windows 7/10/11.2 64-bit operating system required
* Windows 7 does not support all features including by not limited to Hardware Raytracing
DirectX
Recommended PSU Wattage500W
Max GPU Length274 mm
Card Dimensions (L x H)10.79" x 4.49"
Slot Width2.5 slot
Poids d’expédition1.29 kg
Dimensions du colis360 × 193 × 93 mm

Questions sur cet article

How loud and hot does the triple-fan SPEEDSTER MERC308 cooler run during all-day gaming sessions?

The triple-fan design on the SPEEDSTER MERC308 is built to move more air at lower RPMs, keeping the Radeon RX 6650 XT cooler and quieter than dual-fan models under sustained load.

What power supply and motherboard slot do I need before installing this card?

You need a minimum 500 W power supply with the required PCIe power connectors and a motherboard with a free PCI Express 4.0 x16 slot.

Will the 128-bit memory bus and PCI Express 4.0 interface bottleneck an older PCIe 3.0 system?

The card works in PCIe 3.0 slots at slightly reduced bandwidth; the 128-bit GDDR6 memory at 17.5 Gbps is unchanged, so real-world gaming impact is small at 1080p and 1440p.

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