NVIDIA GeForce 840A vs ATI Mobility Radeon HD 4650

VS

NVIDIA GeForce 840A

ATI Mobility Radeon HD 4650

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 512MB VRAM Mobility Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840A 's Advantages

Released 5 years and 2 months late

Boost Clock1124MHz

More VRAM (2GB vs 512GB)

64 additional rendering cores

Lower TDP (33W vs 35W)

ATI Mobility Radeon HD 4650 's Advantages

Larger VRAM bandwidth (19.20GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 840A +169%

0.863 TFLOPS

Mobility Radeon HD 4650

0.32 TFLOPS

GeForce 840A

VS

Mobility Radeon HD 4650

Graphics Card

Mar 2014

Release Date

Jan 2009

GeForce 800A

Generation

M9x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

600 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

DDR2

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

19.20GB/s

Render Config

-

Compute Units

4

-

384

Shading Units

320

16

TMUs

32

8

ROPs

8

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

128 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

4.000 GPixel/s

17.98 GTexel/s

Texture Rate

16.00 GTexel/s

-

863.2 GFLOPS

FP32 (float)

320.0 GFLOPS

26.98 GFLOPS

FP64 (double)

-

Board Design

33W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

M96

-

Maxwell

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

Unknown

Transistors

0.514 billion

Unknown

Die Size

146 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.0

CUDA

-

5.1

Shader Model

4.1

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