ATI Mobility Radeon HD 3870 vs AMD Radeon HD 8850M

VS

ATI Mobility Radeon HD 3870 AMD Radeon HD 8850M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 2GB VRAM Radeon HD 8850M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8850M 's Advantages

Released 4 years and 10 months late

Boost Clock625MHz

Larger VRAM bandwidth (64.00GB/s vs 54.40GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 8850M +89%

0.8 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 8850M

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

575 MHz

-

Boost Clock

625 MHz

850 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

4

Compute Units

10

320

Shading Units

640

16

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

10.56 GPixel/s

Pixel Rate

10.00 GPixel/s

10.56 GTexel/s

Texture Rate

25.00 GTexel/s

-

FP16 (half)

-

422.4 GFLOPS

FP32 (float)

800.0 GFLOPS

84.48 GFLOPS

FP64 (double)

50.00 GFLOPS

Graphics Processor

M88

GPU Name

Venus

-

GPU Variant

Venus PRO (216-0846009)

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

Board Design

55W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

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

-

CUDA

-

4.1

Shader Model

6.5 (5.1)

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