AMD Radeon R5 M255 vs AMD Radeon HD 8770M

VS

AMD Radeon R5 M255

AMD Radeon HD 8770M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 2GB VRAM Radeon HD 8770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages

Released 1 years and 6 months late

Boost Clock has increased by 14% (940MHz vs 825MHz)

AMD Radeon HD 8770M 's Advantages

Larger VRAM bandwidth (72.00GB/s vs 32.00GB/s)

Score

Benchmark

FP32 (float)

Radeon R5 M255 +13%

0.721 TFLOPS

Radeon HD 8770M

0.633 TFLOPS

Radeon R5 M255

VS

Radeon HD 8770M

Graphics Card

Oct 2014

Release Date

Apr 2013

Gem System

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

925 MHz

Base Clock

775 MHz

940 MHz

Boost Clock

825 MHz

1000 MHz

Memory Clock

1125 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

32.00GB/s

Bandwidth

72.00GB/s

Render Config

6

Compute Units

6

-

384

Shading Units

384

24

TMUs

24

8

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

6.600 GPixel/s

22.56 GTexel/s

Texture Rate

19.80 GTexel/s

721.9 GFLOPS

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

633.6 GFLOPS

45.12 GFLOPS

FP64 (double)

39.60 GFLOPS

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Topaz

GPU Name

Mars

Topaz PRO (216-0858030)

GPU Variant

Mars S3 XT (216-0842018)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

0.95 billion

125 mm²

Die Size

77 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.2.170

Vulkan

1.2.170

-

6.5

Shader Model

6.5 (5.1)

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