AMD Radeon HD 8870M vs NVIDIA GeForce GT 420M

VS

AMD Radeon HD 8870M

NVIDIA GeForce GT 420M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8870M and 512MB VRAM GeForce GT 420M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870M 's Advantages

Released 2 years and 7 months late

Boost Clock775MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 25.60GB/s)

544 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870M +416%

0.992 TFLOPS

GeForce GT 420M

0.192 TFLOPS

Radeon HD 8870M

VS

GeForce GT 420M

Graphics Card

Apr 2013

Release Date

Sep 2010

Solar System

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

725 MHz

Base Clock

-

775 MHz

Boost Clock

-

1125 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

25.60GB/s

Render Config

10

Compute Units

-

SM Count

2

640

Shading Units

96

40

TMUs

16

ROPs

4

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.40 GPixel/s

Pixel Rate

2.000 GPixel/s

31.00 GTexel/s

Texture Rate

8.000 GTexel/s

-

992.0 GFLOPS

FP32 (float)

192.0 GFLOPS

62.00 GFLOPS

FP64 (double)

16.00 GFLOPS

Board Design

Unknown

TDP

23W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Venus

GPU Name

GF108

Venus XT (216-0846000)

GPU Variant

N11P-GE-A1

GCN 1.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.5 billion

Transistors

0.585 billion

123 mm²

Die Size

116 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

1.1

1.2.170

Vulkan

N/A

-

CUDA

2.1

6.5 (5.1)

Shader Model

5.1

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