AMD Radeon RX 6650 XT vs AMD Radeon HD 7970

VS

AMD Radeon RX 6650 XT

AMD Radeon HD 7970

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6650 XT and 3GB VRAM Radeon HD 7970 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6650 XT 's Advantages

Released 10 years and 5 months late

Boost Clock2635MHz

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (280.3GB/s vs 264.0GB/s)

Lower TDP (176W vs 250W)

Score

Benchmark

FP32 (float)

Radeon RX 6650 XT +184%

10.79 TFLOPS

Radeon HD 7970

3.789 TFLOPS

3DMark Time Spy

Radeon RX 6650 XT +334%

9891

Radeon HD 7970

2279

Radeon RX 6650 XT

VS

Radeon HD 7970

Graphics Card

May 2022

Release Date

Dec 2011

Navi II

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

2055 MHz

Base Clock

-

2635 MHz

Boost Clock

-

2190 MHz

Memory Clock

1375 MHz

Memory

8GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

384bit

280.3GB/s

Bandwidth

264.0GB/s

Render Config

32

Compute Units

32

-

2048

Shading Units

2048

128

TMUs

128

64

ROPs

32

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

768 KB

32 MB

L3 Cache

-

Theoretical Performance

168.6 GPixel/s

Pixel Rate

29.60 GPixel/s

337.3 GTexel/s

Texture Rate

118.4 GTexel/s

21.59 TFLOPS

FP16 (half)

-

10.79 TFLOPS

FP32 (float)

3.789 TFLOPS

674.6 GFLOPS

FP64 (double)

947.2 GFLOPS

Board Design

176W

TDP

250W

450 W

Suggested PSU

600 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Navi 23

GPU Name

Tahiti

Navi 23 KXT (215-130000136)

GPU Variant

Tahiti XT (215-0821060)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

4.313 billion

237 mm²

Die Size

352 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

6.5

Shader Model

5.1

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