ATI Mobility Radeon HD 4850 X2 vs NVIDIA GeForce 8400M GT

VS

ATI Mobility Radeon HD 4850 X2

NVIDIA GeForce 8400M GT

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 X2 and 512MB VRAM GeForce 8400M GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4850 X2 's Advantages

Released 1 years and 8 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (89.60GB/s vs 19.20GB/s)

784 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 X2 +2658%

0.8 TFLOPS

GeForce 8400M GT

0.029 TFLOPS

Mobility Radeon HD 4850 X2

VS

GeForce 8400M GT

Graphics Card

Jan 2009

Release Date

May 2007

M9x

Generation

GeForce 8M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

700 MHz

Memory Clock

600 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

89.60GB/s

Bandwidth

19.20GB/s

Render Config

10

Compute Units

-

SM Count

2

800

Shading Units

16

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

1.800 GPixel/s

20.00 GTexel/s

Texture Rate

3.600 GTexel/s

-

800.0 GFLOPS

FP32 (float)

28.80 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

14W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

M98

GPU Name

G86

M98 L2 (216-0732019)

GPU Variant

G86-603-A2

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

80 nm

0.956 billion

Transistors

0.21 billion

256 mm²

Die Size

127 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

4.1

Shader Model

4.0

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