Comparing ASRock Radeon RX 7900 XT 20GB vs Sapphire Nitro+ Radeon RX 6800 XT SE

gpu ASRock Radeon RX 7900 XT 20GB 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 1.925 GHz+ 5 %
• Boost Clock
  2.400 GHz 2.360 GHz+ 5 %
• Avg (Game) Clock
  2.000 GHz 2.110 GHz+ 5 %
• 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 90 mm 2 x 95 mm
• Fan 2
  -- 1 x 85 mm
• Cooler-Type
  Air cooling Air cooling
• Noise (Idle)
  0 dB / Silent 0 dB / Silent
• Noise (Load)
  -- 36 dB

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

• Max. resolution
  7680x4320 7680x4320
• DirectX
  12_2 (Ultimate) 12_2
• Raytracing
  Yes Yes
• DLSS / FSR
  Yes No
• LED
  No LED lighting 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
  276 mm 310 mm
• Height
  113 mm 135 mm
• Width
  51 mm 55 mm
• Width (Slots)
  3 PCIe-Slots 3 PCIe-Slots
• Weight
  -- 1240 g

• GPU Interface
  PCIe 4 x 16 PCIe 4.0 x 16
• Release date
  Q4/2022 Q1/2021
• Structure size
  5 nm 7 nm
• Part-no
  Radeon RX 7900 XT 20GB 11304-01-20G
• Documents
  data sheet data sheet