NVIDIA GeForce 820A vs AMD Radeon R5 M255

VS

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 820A and 2GB VRAM Radeon R5 M255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages

Released 7 months late

Boost Clock940MHz

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (32.00GB/s vs 14.40GB/s)

288 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 820A

0.298 TFLOPS

Radeon R5 M255 +141%

0.721 TFLOPS

GeForce 820A

VS

Radeon R5 M255

Graphics Card

Mar 2014

Release Date

Oct 2014

GeForce 800A

Generation

Gem System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

900 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

14.40GB/s

Bandwidth

32.00GB/s

Render Config

2

SM Count

-

Compute Units

6

96

Shading Units

384

16

TMUs

24

8

ROPs

8

-

Tensor Cores

-

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

Theoretical Performance

3.100 GPixel/s

Pixel Rate

7.520 GPixel/s

12.40 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

297.6 GFLOPS

FP32 (float)

721.9 GFLOPS

24.80 GFLOPS

FP64 (double)

45.12 GFLOPS

Graphics Processor

GF117

GPU Name

Topaz

N15V-GM

GPU Variant

Topaz PRO (216-0858030)

Fermi 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.585 billion

Transistors

1.55 billion

116 mm²

Die Size

125 mm²

Board Design

15W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.2.170

2.1

CUDA

-

5.1

Shader Model

6.5

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