AMD Radeon Pro 455 vs AMD Radeon HD 6870M

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon Pro 455 and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 455 's Advantages

Released 5 years and 9 months late

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (81.28GB/s vs 64.00GB/s)

Lower TDP (35W vs 50W)

AMD Radeon HD 6870M 's Advantages

32 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon Pro 455 +21%

1.313 TFLOPS

Radeon HD 6870M

1.08 TFLOPS

Radeon Pro 455

VS

Radeon HD 6870M

Graphics Card

Oct 2016

Release Date

Jan 2011

Radeon Pro Mac

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

-

Boost Clock

-

1270 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

81.28GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

12

Compute Units

10

768

Shading Units

800

48

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

1024 KB

L2 Cache

256 KB

Theoretical Performance

13.68 GPixel/s

Pixel Rate

10.80 GPixel/s

41.04 GTexel/s

Texture Rate

27.00 GTexel/s

1313 GFLOPS

FP16 (half)

-

1313 GFLOPS

FP32 (float)

1080 GFLOPS

82.08 GFLOPS

FP64 (double)

-

Graphics Processor

Baffin

GPU Name

Granville

Baffin PRO

GPU Variant

Granville XT (216-0769024)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

3 billion

Transistors

1.04 billion

123 mm²

Die Size

166 mm²

Board Design

35W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

5.0

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