ATI Mobility Radeon HD 3870 vs AMD Radeon HD 8830M

VS

ATI Mobility Radeon HD 3870

AMD Radeon HD 8830M

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 2GB VRAM Radeon HD 8830M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 32.00GB/s)

AMD Radeon HD 8830M 's Advantages

Released 4 years and 10 months late

Boost Clock625MHz

More VRAM (2GB vs 512GB)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon HD 8830M +89%

0.8 TFLOPS

Mobility Radeon HD 3870

VS

Radeon HD 8830M

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

DDR3

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

32.00GB/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

10.56 GPixel/s

Pixel Rate

10.00 GPixel/s

10.56 GTexel/s

Texture Rate

25.00 GTexel/s

-

422.4 GFLOPS

FP32 (float)

800.0 GFLOPS

84.48 GFLOPS

FP64 (double)

50.00 GFLOPS

Board Design

55W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M88

GPU Name

Venus

-

GPU Variant

Venus LE (216-0846030)

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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