AMD Radeon RX 6800 XT

AMD · Radeon

Radeon RX 6800 XT

Released November 2020

A 2020 RDNA 2 graphics card with 16 GB of GDDR6 memory, hardware ray tracing and 128 MB of Infinity Cache.

Memory
16 GB
Shaders
4,608
Boost clock
2,250 MHz
Bandwidth
512 GB/s
Power
300 W

What reviewers say

Reviewers find strong 1440p and 4K performance competitive with the RTX 3080, with results varying by game. They praise the improved reference cooler but find NVIDIA stronger in ray tracing. PCWorld values the larger memory capacity and lower launch price, though its sample has some coil whine. AMD's upscaling alternative was unavailable in these launch reviews.

From pcgamer.com, techradar.com and pcworld.com

Performance

Chip maker
AMD
Architecture
RDNA 2
Shader cores
4,608
Boost clock
2,250 MHz
Architecture
AMD reference specification; 72 compute units and 26.8 billion transistors
Manufacturing process
7 nm
Ray tracing
72 Ray Accelerators; DirectX Raytracing support
Upscaling and frame generation
AMD FidelityFX Super Resolution (FSR); AMD Radeon Super Resolution
Base clock
2015 MHz game frequency; up to 2250 MHz boost, which AMD defines for bursty workloads rather than sustained gaming
Cache
128 MB AMD Infinity Cache

Memory

Video memory
16 GB GDDR6
Memory bus
256-bit
Memory bandwidth
512 GB/s
Memory detail
Up to 16 Gbps GDDR6; 512 GB/s physical memory bandwidth

Connections and power

Board power
300 W
Interface
PCIe 4.0
Display outputs
DisplayPort 1.4a, HDMI 2.1 with VRR and FRL, and USB-C (AMD reference)
Power connector
2 × PCIe 8-pin
Recommended power supply
750 W
Slot width
2.5-slot (AMD reference)
Size (reference card)
267 mm long (AMD reference); no reference width or height verified
Video encode and decode
Hardware AV1 decoding; H.264 and H.265/HEVC encode and decode

Pros and cons

Pros

  • 16 GB of video memory
  • Hardware ray tracing with 72 Ray Accelerators
  • HDMI 2.1 and USB-C display output

Cons

  • 300 W typical board power
  • Reference cooler occupies 2.5 slots
  • DisplayPort 1.4a rather than DisplayPort 2.1

Closest rivals

Model
MemoryShadersBoost clockBandwidthPowerReleased
8 GB4,8641,670 MHz448 GB/s or 608 GB/s200 W or –Dec 2020
16 GB or 8 GB4,096–560 GB/s or 512 GB/s225 WOct 2022
11 GB4,3521,545 MHz or 1,635 MHz616 GB/s250 W or 260 WSept 2018

Sources

  1. amd.com/en/products/graphics/desktops/radeon/6000-series/amd-radeon-rx-6800-xt.…
  2. ir.amd.com/news-events/press-releases/detail/978/amd-unveils-next-generation-pc…
  3. pcworld.com/article/393729/amd-radeon-rx-6800-rx-6800-xt-review.html

Photo: amd.com

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