Comparing XFX Speedster MERC 310 Radeon RX 7900 XT Black Edition vs XFX Radeon RX 6800 XT

gpu XFX Speedster MERC 310 Radeon RX 7900 XT Black Edition item

• Based on
  AMD Radeon RX 7900 XT AMD Radeon RX 6800 XT
• GPU Chip
  Navi 31 (RDNA 3) Navi 21 XT
• Execution units
  84 72
• Shader
  5376 4608
• Render Output Units
  192 128
• Texture Units
  336 288

• Memory Size
  20 GB 16 GB
• Memory Type
  GDDR6 GDDR6
• Memory Speed
  20 Gbps 2 GHz
• Memory Bandwith
  800 GB/s 512 GB/s
• Memory Interface
  320 bit 256 bit

• Base Clock
  1.500 GHz 1.825 GHz
• Boost Clock
  2.560 GHz+ 7 % 2.250 GHz
• Avg (Game) Clock
  2.220 GHz 2.015 GHz
• Overclocking
  Yes Yes

• TDP
  300 W 300 W
• TDP (up)
  -- 345 W
• Tjunction max
  -- 96 °C
• PCIe-Power
  2 x 8-Pin 2 x 8-Pin

• Fan-Type
  Axial Axial
• Fan 1
  3 x 100 mm 3 x 80 mm
• Cooler-Type
  Air cooling Air cooling
• Noise (Idle)
  0 dB / Silent 0 dB / Silent
• Noise (Load)
  -- 37 dB

• Max. Displays
  4 4
• HDCP-Version
  2.3 2.3
• HDMI Ports
  1x HDMI v2.1 1x HDMI v2.1
• DP Ports
  3x DP v2.1 2x DP v1.4a
• USB-C Ports
  -- 1

• Max. resolution
  7680x4320 7680x4320
• DirectX
  12_2 (Ultimate) 12_2
• Raytracing
  Yes Yes
• DLSS / FSR
  Yes No
• LED
  No LED lighting Non addressable LED

• h264
  Decode / Encode Decode / Encode
• h265 / HEVC
  Decode / Encode Decode / Encode
• VP8
  Decode / Encode Decode / Encode
• VP9
  Decode / Encode Decode / Encode
• AV1
  Decode / Encode Decode

• Length
  344 mm 267 mm
• Height
  128 mm 120 mm
• Width
  55 mm 50 mm
• Width (Slots)
  -- 3 PCIe-Slots
• Weight
  -- 1500 g

• GPU Interface
  PCIe 4 x 16 PCIe 4.0 x 16
• Release date
  Q4/2022 Q2/2021
• Structure size
  5 nm 7 nm
• Part-no
  RX-79TMERCB9 RX-68TMATFD8
• Documents
  data sheet data sheet