AMD Radeon RX 6900 XT vs AMD Radeon RX Vega 64 Limited Edition

VS

AMD Radeon RX 6900 XT

AMD Radeon RX Vega 64 Limited Edition

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 8GB VRAM Radeon RX Vega 64 Limited Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XT 's Advantages

Released 3 years and 2 months late

Boost Clock has increased by 46% (2250MHz vs 1546MHz)

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (512.0GB/s vs 483.8GB/s)

1024 additional rendering cores

AMD Radeon RX Vega 64 Limited Edition 's Advantages

Lower TDP (295W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XT +81%

23.04 TFLOPS

Radeon RX Vega 64 Limited Edition

12.66 TFLOPS

Radeon RX 6900 XT

VS

Radeon RX Vega 64 Limited Edition

Graphics Card

Oct 2020

Release Date

Aug 2017

Navi II

Generation

Vega

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

1247 MHz

2250 MHz

Boost Clock

1546 MHz

2000 MHz

Memory Clock

945 MHz

Memory

16GB

Memory Size

8GB

GDDR6

Memory Type

HBM2

256bit

Memory Bus

2048bit

512.0GB/s

Bandwidth

483.8GB/s

Render Config

80

Compute Units

64

-

5120

Shading Units

4096

320

TMUs

256

128

ROPs

64

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

4 MB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

98.94 GPixel/s

720.0 GTexel/s

Texture Rate

395.8 GTexel/s

46.08 TFLOPS

FP16 (half)

25.33 TFLOPS

23.04 TFLOPS

FP32 (float)

12.66 TFLOPS

1440 GFLOPS

FP64 (double)

791.6 GFLOPS

Board Design

300W

TDP

295W

700 W

Suggested PSU

600 W

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

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Navi 21

GPU Name

Vega 10

Navi 21 XTX (215-121000167)

GPU Variant

Vega 10 XT (215-0894200)

RDNA 2.0

Architecture

GCN 5.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

26.8 billion

Transistors

12.5 billion

520 mm²

Die Size

495 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.2

-

6.5

Shader Model

6.4

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