NVIDIA GeForce GT 420M vs AMD Radeon HD 8670M

VS

NVIDIA GeForce GT 420M

AMD Radeon HD 8670M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 1024MB VRAM Radeon HD 8670M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Larger VRAM bandwidth (25.60GB/s vs 14.40GB/s)

AMD Radeon HD 8670M 's Advantages

Released 2 years and 6 months late

Boost Clock975MHz

More VRAM (1024GB vs 512GB)

224 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

Radeon HD 8670M +225%

0.624 TFLOPS

GeForce GT 420M

VS

Radeon HD 8670M

Graphics Card

Sep 2010

Release Date

Mar 2013

GeForce 400M

Generation

Solar System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

975 MHz

800 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

1024MB

DDR3

Memory Type

DDR3

128bit

Memory Bus

64bit

25.60GB/s

Bandwidth

14.40GB/s

Render Config

-

Compute Units

5

2

SM Count

-

96

Shading Units

320

16

TMUs

20

4

ROPs

8

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

7.800 GPixel/s

8.000 GTexel/s

Texture Rate

19.50 GTexel/s

-

192.0 GFLOPS

FP32 (float)

624.0 GFLOPS

16.00 GFLOPS

FP64 (double)

39.00 GFLOPS

Board Design

23W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

GF108

GPU Name

Sun

N11P-GE-A1

GPU Variant

Sun S3 XT (216-0841009)

Fermi

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

0.69 billion

116 mm²

Die Size

56 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.1

OpenCL

2.1 (1.2)

N/A

Vulkan

1.2.170

2.1

CUDA

-

5.1

Shader Model

6.5 (5.1)

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