AMD Radeon R5 A320 vs NVIDIA GeForce 840A

VS

AMD Radeon R5 A320

NVIDIA GeForce 840A

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A320 and 2GB VRAM GeForce 840A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A320 's Advantages

Released 10 months late

NVIDIA GeForce 840A 's Advantages

Boost Clock has increased by 36% (1124MHz vs 825MHz)

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (16.02GB/s vs 16.00GB/s)

64 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A320

0.528 TFLOPS

GeForce 840A +63%

0.863 TFLOPS

Radeon R5 A320

VS

GeForce 840A

Graphics Card

Jan 2015

Release Date

Mar 2014

All-In-One

Generation

GeForce 800A

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

750 MHz

Base Clock

1029 MHz

825 MHz

Boost Clock

1124 MHz

1000 MHz

Memory Clock

1001 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

16.02GB/s

Render Config

5

Compute Units

-

320

Shading Units

384

20

TMUs

16

8

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

128 KB

L2 Cache

1024 KB

-

Theoretical Performance

6.600 GPixel/s

Pixel Rate

8.992 GPixel/s

16.50 GTexel/s

Texture Rate

17.98 GTexel/s

-

528.0 GFLOPS

FP32 (float)

863.2 GFLOPS

-

FP64 (double)

26.98 GFLOPS

Board Design

Unknown

TDP

33W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Jet

GPU Name

GM108

Jet PRO (216-0856040)

GPU Variant

-

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.69 billion

Transistors

Unknown

56 mm²

Die Size

Unknown

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

3.0

1.2.170

Vulkan

1.3

-

CUDA

5.0

6.5 (5.1)

Shader Model

5.1

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