NVIDIA GeForce 705M vs ATI Mobility Radeon HD 3870 X2

VS

NVIDIA GeForce 705M

ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 705M and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 705M 's Advantages

More VRAM (1024GB vs 512GB)

Lower TDP (15W vs 110W)

ATI Mobility Radeon HD 3870 X2 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 14.40GB/s)

272 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 705M

0.142 TFLOPS

Mobility Radeon HD 3870 X2 +197%

0.422 TFLOPS

GeForce 705M

VS

Mobility Radeon HD 3870 X2

Graphics Card

Unknown

Release Date

Sep 2008

GeForce 700M

Generation

M8x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

256bit

14.40GB/s

Bandwidth

54.40GB/s

Render Config

-

Compute Units

4

1

SM Count

-

48

Shading Units

320

8

TMUs

16

4

ROPs

16

-

64 KB (per SM)

L1 Cache

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

1.476 GPixel/s

Pixel Rate

10.56 GPixel/s

5.904 GTexel/s

Texture Rate

10.56 GTexel/s

-

141.7 GFLOPS

FP32 (float)

422.4 GFLOPS

11.81 GFLOPS

FP64 (double)

84.48 GFLOPS

Board Design

15W

TDP

110W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF119

GPU Name

M88

GF119 B1

GPU Variant

-

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.292 billion

Transistors

0.666 billion

79 mm²

Die Size

192 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

4.1

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