AMD Radeon R5 A255 vs NVIDIA GeForce 8400M GS

VS

AMD Radeon R5 A255

NVIDIA GeForce 8400M GS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 256MB VRAM GeForce 8400M GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Released 6 years and 8 months late

Boost Clock940MHz

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 6.400GB/s)

368 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255 +2673%

0.721 TFLOPS

GeForce 8400M GS

0.026 TFLOPS

Radeon R5 A255

VS

GeForce 8400M GS

Graphics Card

Jan 2014

Release Date

May 2007

All-In-One

Generation

GeForce 8M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-I

Clock Speeds

925 MHz

Base Clock

-

940 MHz

Boost Clock

-

1000 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

6.400GB/s

Render Config

6

Compute Units

-

SM Count

2

384

Shading Units

16

24

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

1.600 GPixel/s

22.56 GTexel/s

Texture Rate

3.200 GTexel/s

-

721.9 GFLOPS

FP32 (float)

25.60 GFLOPS

-

Board Design

Unknown

TDP

11W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Topaz

GPU Name

G86

Topaz PRO (216-0858030)

GPU Variant

NB8M-GS

GCN 3.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.55 billion

Transistors

0.21 billion

125 mm²

Die Size

127 mm²

Graphics Features

12 (12_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.2.170

Vulkan

N/A

-

CUDA

1.1

6.5

Shader Model

4.0

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