ATI Mobility Radeon HD 3850 X2 vs AMD Radeon HD 8870M

VS

ATI Mobility Radeon HD 3850 X2

AMD Radeon HD 8870M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3850 X2 and 2GB VRAM Radeon HD 8870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870M 's Advantages

Released 4 years and 10 months late

Boost Clock775MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (72.00GB/s vs 48.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon HD 8870M +167%

0.992 TFLOPS

Mobility Radeon HD 3850 X2

VS

Radeon HD 8870M

Graphics Card

Jun 2008

Release Date

Apr 2013

M8x

Generation

Solar System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

725 MHz

-

Boost Clock

775 MHz

750 MHz

Memory Clock

1125 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

48.00GB/s

Bandwidth

72.00GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

640

16

TMUs

40

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

9.280 GPixel/s

Pixel Rate

12.40 GPixel/s

9.280 GTexel/s

Texture Rate

31.00 GTexel/s

-

371.2 GFLOPS

FP32 (float)

992.0 GFLOPS

74.24 GFLOPS

FP64 (double)

62.00 GFLOPS

Board Design

70W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M88

GPU Name

Venus

-

GPU Variant

Venus XT (216-0846000)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.666 billion

Transistors

1.5 billion

192 mm²

Die Size

123 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

N/A

OpenCL

2.1 (1.2)

N/A

Vulkan

1.2.170

-

4.1

Shader Model

6.5 (5.1)

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