ATI Mobility Radeon HD 3870 vs ATI Mobility Radeon HD 2400 XT Mac Edition

VS

ATI Mobility Radeon HD 3870

ATI Mobility Radeon HD 2400 XT Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 128MB VRAM Mobility Radeon HD 2400 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Released 1 years late

More VRAM (512GB vs 128GB)

Larger VRAM bandwidth (54.40GB/s vs 12.80GB/s)

280 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870 +711%

0.422 TFLOPS

Mobility Radeon HD 2400 XT Mac Edition

0.052 TFLOPS

Mobility Radeon HD 3870

VS

Mobility Radeon HD 2400 XT Mac Edition

Graphics Card

Jun 2008

Release Date

Jun 2007

M8x

Generation

M7x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

850 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

128MB

GDDR3

Memory Type

GDDR3

256bit

Memory Bus

64bit

54.40GB/s

Bandwidth

12.80GB/s

Render Config

4

Compute Units

2

-

320

Shading Units

40

16

TMUs

4

16

ROPs

4

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

2.600 GPixel/s

10.56 GTexel/s

Texture Rate

2.600 GTexel/s

-

422.4 GFLOPS

FP32 (float)

52.00 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Board Design

55W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M88

GPU Name

M74

-

GPU Variant

M74-M (216RMAKA12FG)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

65 nm

0.666 billion

Transistors

0.18 billion

192 mm²

Die Size

85 mm²

Graphics Features

10.1 (10_1)

DirectX

10.0 (10_0)

3.3

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.0

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