AMD Radeon RX 6800 vs AMD Radeon RX 7990 XTX

VS

AMD Radeon RX 6800

AMD Radeon RX 7990 XTX

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 and 24GB VRAM Radeon RX 7990 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 's Advantages

Lower TDP (250W vs 405W)

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock has increased by 71% (3599MHz vs 2105MHz)

More VRAM (24GB vs 16GB)

Larger VRAM bandwidth (1152GB/s vs 512.0GB/s)

2304 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6800

16.17 TFLOPS

Radeon RX 7990 XTX +447%

88.45 TFLOPS

Radeon RX 6800

VS

Radeon RX 7990 XTX

Graphics Card

Oct 2020

Release Date

Unknown

Navi II

Generation

Navi III

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1700 MHz

Base Clock

2500 MHz

2105 MHz

Boost Clock

3599 MHz

2000 MHz

Memory Clock

3000 MHz

Memory

16GB

Memory Size

24GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

384bit

512.0GB/s

Bandwidth

1152GB/s

Render Config

60

Compute Units

96

-

3840

Shading Units

6144

240

TMUs

384

96

ROPs

192

-

60

RT Cores

96

128 KB per Array

L1 Cache

256 KB per Array

4 MB

L2 Cache

6 MB

128 MB

L3 Cache

192 MB

Theoretical Performance

202.1 GPixel/s

Pixel Rate

691.0 GPixel/s

505.2 GTexel/s

Texture Rate

1382 GTexel/s

32.33 TFLOPS

FP16 (half)

176.9 TFLOPS

16.17 TFLOPS

FP32 (float)

88.45 TFLOPS

1010 GFLOPS

FP64 (double)

2.764 TFLOPS

Board Design

250W

TDP

405W

600 W

Suggested PSU

800 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

2x 8-pin

Power Connectors

3x 8-pin

Graphics Processor

Navi 21

GPU Name

Navi 31

Navi 21 XL (215-121000187)

GPU Variant

Navi 31 XTX+

RDNA 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

7 nm

Process Size

5 nm

26.8 billion

Transistors

57.7 billion

520 mm²

Die Size

529 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.3

Vulkan

1.3

-

6.5

Shader Model

6.7

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