AMD Radeon HD 8670A vs NVIDIA GeForce 405M

VS

AMD Radeon HD 8670A

NVIDIA GeForce 405M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 512MB VRAM GeForce 405M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Released 2 years and 1 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (16.00GB/s vs 12.80GB/s)

368 additional rendering cores

NVIDIA GeForce 405M 's Advantages

Lower TDP (14W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A +1082%

0.461 TFLOPS

GeForce 405M

0.039 TFLOPS

Radeon HD 8670A

VS

GeForce 405M

Graphics Card

Feb 2013

Release Date

Jan 2011

All-In-One

Generation

GeForce 400M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

12.80GB/s

Render Config

6

Compute Units

-

SM Count

2

384

Shading Units

16

24

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

32 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

2.424 GPixel/s

14.40 GTexel/s

Texture Rate

4.848 GTexel/s

-

460.8 GFLOPS

FP32 (float)

38.78 GFLOPS

28.80 GFLOPS

FP64 (double)

-

Board Design

45W

TDP

14W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

GT218

Mars XT

GPU Variant

-

GCN 1.0

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

0.95 billion

Transistors

0.26 billion

77 mm²

Die Size

57 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.2

5.1

Shader Model

4.1

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