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 6600S

CORE STATE Navi 23

VRAM 4 GB

CLOCK SPEED 2000 MHz

TDP 80 W

BUS WIDTH 128 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2022

PERFORMANCE BENCHMARKS

geekbench_opencl

34,541

66,403

passmark_directx_10

N/A

81

passmark_directx_11

N/A

105

passmark_directx_12

N/A

56

passmark_directx_9

N/A

176

passmark_g2d

N/A

647

passmark_g3d

N/A

12,649

passmark_gpu_compute

N/A

4,879

DETAILED SPECIFICATIONS

SPECIFICATION

HD 7970

RX 6600S

Core Specs

Shading Units

2,048

1,792 -12.5%

Shaders

2,048

1,792 -12.5%

TMUs

128

112 -12.5%

ROPs

32

64 +100.0%

Compute Units

32

28 -12.5%

Clocks

Base Clock

—

1700 MHz

Boost Clock

—

2000 MHz

GPU Clock

925 MHz

—

Game Clock

—

1881 MHz

Memory Clock

1375 MHz 5.5 Gbps effective

1750 MHz 14 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

128 bit

Bandwidth

264.0 GB/s

224.0 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB per Array

L2 Cache

768 KB

2 MB

L3 Cache

—

32 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

29.60 GPixel/s

128.0 GPixel/s

Texture Rate

118.4 GTexel/s

224.0 GTexel/s

FP32 (TFLOPS)

3.789 TFLOPS

7.168 TFLOPS

FP64 (TFLOPS)

947.2 GFLOPS (1:4)

448.0 GFLOPS (1:16)

FP16 (TFLOPS)

—

14.34 TFLOPS (2:1)

AI/RT

RT Cores

—

28

Power

TDP

250 W

80 W

TDP (W)

250

80 -68.0%

Suggested PSU

600 W

—

Power Connectors

1x 6-pin + 1x 8-pin

None

Architecture

Architecture

GCN 1.0

RDNA 2.0

GPU Name

Tahiti

Navi 23

Generation

Southern Islands (HD 7900)

Navi Mobile (RX 6000M)

Process Size

28 nm

7 nm

Transistors

4,313 million

11,060 million

Die Size

352 mm²

237 mm²

Foundry

TSMC

TSMC

Density

12.3M / mm²

46.7M / 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)

2.1

Shader Model

6.5 (5.1)

6.8

Physical

Slot Width

Dual-slot

IGP

Length

275 mm 10.8 inches

—

Height

111 mm 4.4 inches

—

Outputs

1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2

Portable Device Dependent

Bus Interface

PCIe 3.0 x16

PCIe 4.0 x8

Other

Launch Price

549 USD

—

Production

End-of-life

End-of-life

Predecessor

Northern Islands

Polaris Mobile

Successor

Sea Islands

—

View Radeon HD 7970 Details View Radeon RX 6600S Details