GPU Comparison

A

AMD

RADEON

AMD Radeon HD 7970

CORE STATE Tahiti

VRAM 3 GB

CLOCK SPEED —

TDP 250 W

BUS WIDTH 384 bit

ARCHITECTURE GCN 1.0

nm

PROCESS 28 nm

LAUNCH DATE 2012

VS

A

AMD

RADEON

Radeon RX 6400

CORE STATE Navi 24

VRAM 4 GB

CLOCK SPEED 2321 MHz

TDP 53 W

BUS WIDTH 64 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 6 nm

LAUNCH DATE 2022

PERFORMANCE BENCHMARKS

geekbench_opencl

34,541

32,977

3dmark_3dmark_steel_nomad_dx12

N/A

176

geekbench_vulkan

N/A

38,040

passmark_directx_10

N/A

54

passmark_directx_11

N/A

70

passmark_directx_12

N/A

30

passmark_directx_9

N/A

93

passmark_g2d

N/A

722

passmark_g3d

N/A

7,673

passmark_gpu_compute

N/A

2,812

DETAILED SPECIFICATIONS

SPECIFICATION

HD 7970

RX 6400

Core Specs

Shading Units

2,048

768 -62.5%

Shaders

2,048

768 -62.5%

TMUs

128

48 -62.5%

ROPs

32

32 0.0%

Compute Units

32

12 -62.5%

Clocks

Base Clock

—

1923 MHz

Boost Clock

—

2321 MHz

GPU Clock

925 MHz

—

Game Clock

—

2039 MHz

Memory Clock

1375 MHz 5.5 Gbps effective

2000 MHz 16 Gbps effective

Memory

Memory Size

3 GB

4 GB

VRAM (MB)

3,072

4,096 +33.3%

Memory Type

GDDR5

GDDR6

Memory Bus

384 bit

64 bit

Bandwidth

264.0 GB/s

128.0 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB per Array

L2 Cache

768 KB

1024 KB

L3 Cache

—

16 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

29.60 GPixel/s

74.27 GPixel/s

Texture Rate

118.4 GTexel/s

111.4 GTexel/s

FP32 (TFLOPS)

3.789 TFLOPS

3.565 TFLOPS

FP64 (TFLOPS)

947.2 GFLOPS (1:4)

222.8 GFLOPS (1:16)

FP16 (TFLOPS)

—

7.130 TFLOPS (2:1)

AI/RT

RT Cores

—

12

Power

TDP

250 W

53 W

TDP (W)

250

53 -78.8%

Suggested PSU

600 W

250 W

Power Connectors

1x 6-pin + 1x 8-pin

None

Architecture

Architecture

GCN 1.0

RDNA 2.0

GPU Name

Tahiti

Navi 24

Generation

Southern Islands (HD 7900)

Navi II (RX 6000)

Process Size

28 nm

6 nm

Transistors

4,313 million

5,400 million

Die Size

352 mm²

107 mm²

Foundry

TSMC

TSMC

Density

12.3M / mm²

50.5M / mm²

API Support

DirectX

12 (11_1)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.2.170

1.4

OpenCL

2.1 (1.2)

2.2

Shader Model

6.5 (5.1)

6.8

Physical

Slot Width

Dual-slot

Single-slot

Length

275 mm 10.8 inches

—

Height

111 mm 4.4 inches

—

Outputs

1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2

1x HDMI 2.11x DisplayPort 1.4a

Bus Interface

PCIe 3.0 x16

PCIe 4.0 x4

Other

Launch Price

549 USD

159 USD

Production

End-of-life

End-of-life

Predecessor

Northern Islands

Navi

Successor

Sea Islands

Navi III

View Radeon HD 7970 Details View Radeon RX 6400 Details