AMD Radeon RX 6600 XT vs AMD Radeon HD 7970

VS

AMD Radeon RX 6600 XT AMD Radeon HD 7970

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 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 6600 XT 's Advantages

Released 9 years and 7 months late

Boost Clock2589MHz

More VRAM (8GB vs 3GB)

Lower TDP (160W vs 250W)

AMD Radeon HD 7970 's Advantages

Larger VRAM bandwidth (264.0GB/s vs 256.0GB/s)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +179%

10.6 TFLOPS

Radeon HD 7970

3.789 TFLOPS

3DMark Time Spy

Radeon RX 6600 XT +320%

9577

Radeon HD 7970

2279

Radeon RX 6600 XT

VS

Radeon HD 7970

Graphics Card

Jul 2021

Release Date

Dec 2011

Navi II

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

1375 MHz

Memory

8GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

384bit

256.0GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

32

Compute Units

32

2048

Shading Units

2048

128

TMUs

128

64

ROPs

32

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

768 KB

Theoretical Performance

165.7 GPixel/s

Pixel Rate

29.60 GPixel/s

331.4 GTexel/s

Texture Rate

118.4 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

3.789 TFLOPS

662.8 GFLOPS

FP64 (double)

947.2 GFLOPS

Graphics Processor

Navi 23

GPU Name

Tahiti

Navi 23 XT (215-130000006)

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

Board Design

160W

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 Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

5.1

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