AMD Radeon HD 8970M vs ATI Mobility Radeon HD 3850 X2

VS

AMD Radeon HD 8970M

ATI Mobility Radeon HD 3850 X2

We compared two Mobile platform GPUs: 4GB VRAM Radeon HD 8970M and 512MB VRAM Mobility Radeon HD 3850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970M 's Advantages

Released 4 years and 11 months late

Boost Clock900MHz

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 48.00GB/s)

960 additional rendering cores

ATI Mobility Radeon HD 3850 X2 's Advantages

Lower TDP (70W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 8970M +521%

2.304 TFLOPS

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon HD 8970M

VS

Mobility Radeon HD 3850 X2

Graphics Card

May 2013

Release Date

Jun 2008

Solar System

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

900 MHz

Boost Clock

-

1200 MHz

Memory Clock

750 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

48.00GB/s

Render Config

20

Compute Units

4

-

1280

Shading Units

320

80

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

9.280 GPixel/s

72.00 GTexel/s

Texture Rate

9.280 GTexel/s

-

2.304 TFLOPS

FP32 (float)

371.2 GFLOPS

144.0 GFLOPS

FP64 (double)

74.24 GFLOPS

Board Design

100W

TDP

70W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Neptune

GPU Name

M88

Neptune XT (216-0847000)

GPU Variant

-

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.666 billion

212 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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