ATI Mobility Radeon HD 4850 X2 vs NVIDIA GeForce GT 555M

VS

ATI Mobility Radeon HD 4850 X2

NVIDIA GeForce GT 555M

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 X2 and 2GB VRAM GeForce GT 555M 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

Larger VRAM bandwidth (89.60GB/s vs 28.80GB/s)

656 additional rendering cores

NVIDIA GeForce GT 555M 's Advantages

Released 3 years and 2 months late

More VRAM (2GB vs 1024GB)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 X2 +105%

0.8 TFLOPS

GeForce GT 555M

0.389 TFLOPS

Mobility Radeon HD 4850 X2

VS

GeForce GT 555M

Graphics Card

Jan 2009

Release Date

Mar 2012

M9x

Generation

GeForce 500M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

700 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

89.60GB/s

Bandwidth

28.80GB/s

Render Config

10

Compute Units

-

SM Count

2

800

Shading Units

144

40

TMUs

24

16

ROPs

16

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

2.700 GPixel/s

20.00 GTexel/s

Texture Rate

16.20 GTexel/s

-

800.0 GFLOPS

FP32 (float)

388.8 GFLOPS

160.0 GFLOPS

FP64 (double)

32.40 GFLOPS

Board Design

Unknown

TDP

35W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

M98

GPU Name

GF116

M98 L2 (216-0732019)

GPU Variant

N12E-GE2-A1

TeraScale

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

1.17 billion

256 mm²

Die Size

238 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

2.1

4.1

Shader Model

5.1

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