AMD Radeon RX 6900 XTX vs AMD Radeon RX 6650 XT

VS

AMD Radeon RX 6900 XTX AMD Radeon RX 6650 XT

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 8GB VRAM Radeon RX 6650 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XTX 's Advantages

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (576.0GB/s vs 280.3GB/s)

3072 additional rendering cores

AMD Radeon RX 6650 XT 's Advantages

Boost Clock has increased by 8% (2635MHz vs 2435MHz)

Lower TDP (176W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX +131%

24.93 TFLOPS

Radeon RX 6650 XT

10.79 TFLOPS

Radeon RX 6900 XTX

VS

Radeon RX 6650 XT

Graphics Card

Unknown

Release Date

May 2022

Navi II

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

2075 MHz

Base Clock

2055 MHz

2435 MHz

Boost Clock

2635 MHz

2250 MHz

Memory Clock

2190 MHz

Memory

16GB

Memory Size

8GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

128bit

576.0GB/s

Bandwidth

280.3GB/s

Render Config

-

SM Count

-

80

Compute Units

32

5120

Shading Units

2048

320

TMUs

128

ROPs

64

-

Tensor Cores

-

80

RT Cores

32

128 KB per Array

L1 Cache

128 KB per Array

4 MB

L2 Cache

2 MB

Theoretical Performance

311.7 GPixel/s

Pixel Rate

168.6 GPixel/s

779.2 GTexel/s

Texture Rate

337.3 GTexel/s

49.87 TFLOPS

FP16 (half)

21.59 TFLOPS

24.93 TFLOPS

FP32 (float)

10.79 TFLOPS

1.558 TFLOPS

FP64 (double)

674.6 GFLOPS

Graphics Processor

Navi 21

GPU Name

Navi 23

Navi 21 XTXH (215-121000247)

GPU Variant

Navi 23 KXT (215-130000136)

RDNA 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

7 nm

26.8 billion

Transistors

11.06 billion

520 mm²

Die Size

237 mm²

Board Design

330W

TDP

176W

700 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.3

-

CUDA

-

6.5

Shader Model

6.5

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