GPU Comparison

A

AMD

RADEON

AMD Radeon 660M

CORE STATE Rembrandt

VRAM System Shared

CLOCK SPEED 1900 MHz

TDP 40 W

BUS WIDTH System Shared

ARCHITECTURE RDNA 2.0

nm

PROCESS 6 nm

LAUNCH DATE 2022

VS

A

AMD

RADEON

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

PERFORMANCE BENCHMARKS

geekbench_opencl

12,876

34,541

geekbench_vulkan

14,748

N/A

DETAILED SPECIFICATIONS

SPECIFICATION

660M

HD 7970

Core Specs

Shading Units

384

2,048 +433.3%

Shaders

384

2,048 +433.3%

TMUs

24

128 +433.3%

ROPs

16

32 +100.0%

Compute Units

6

32 +433.3%

Clocks

Base Clock

1500 MHz

—

Boost Clock

1900 MHz

—

GPU Clock

—

925 MHz

Memory Clock

System Shared

1375 MHz 5.5 Gbps effective

Memory

Memory Size

System Shared

3 GB

VRAM (MB)

—

3,072

Memory Type

System Shared

GDDR5

Memory Bus

System Shared

384 bit

Bandwidth

System Dependent

264.0 GB/s

Cache

L1 Cache

128 KB per Array

16 KB (per CU)

L2 Cache

2 MB

768 KB

L0 Cache

32 KB per WGP

—

Performance

Pixel Rate

30.40 GPixel/s

29.60 GPixel/s

Texture Rate

45.60 GTexel/s

118.4 GTexel/s

FP32 (TFLOPS)

1,459.2 GFLOPS

3.789 TFLOPS

FP64 (TFLOPS)

91.20 GFLOPS (1:16)

947.2 GFLOPS (1:4)

FP16 (TFLOPS)

2.918 TFLOPS (2:1)

—

AI/RT

RT Cores

6

—

Power

TDP

40 W

250 W

TDP (W)

40

250 +525.0%

Suggested PSU

—

600 W

Power Connectors

None

1x 6-pin + 1x 8-pin

Architecture

Architecture

RDNA 2.0

GCN 1.0

GPU Name

Rembrandt

Tahiti

Generation

Navi II IGP (Rembrandt Mobile)

Southern Islands (HD 7900)

Process Size

6 nm

28 nm

Transistors

13,100 million

4,313 million

Die Size

208 mm²

352 mm²

Foundry

TSMC

TSMC

Density

63.0M / mm²

12.3M / mm²

API Support

DirectX

12 Ultimate (12_2)

12 (11_1)

OpenGL

4.6

4.6

Vulkan

1.4

1.2.170

OpenCL

2.0

2.1 (1.2)

Shader Model

6.8

6.5 (5.1)

Physical

Slot Width

IGP

Dual-slot

Length

—

275 mm 10.8 inches

Height

—

111 mm 4.4 inches

Outputs

Portable Device Dependent

1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2

Bus Interface

PCIe 4.0 x8

PCIe 3.0 x16

Other

Launch Price

—

549 USD

Production

End-of-life

End-of-life

Predecessor

Vega II IGP

Northern Islands

Successor

Navi III IGP

Sea Islands

View Radeon 660M Details View Radeon HD 7970 Details