NVIDIA GeForce 840M vs ATI Mobility Radeon HD 2400 XT Mac Edition

VS

NVIDIA GeForce 840M

ATI Mobility Radeon HD 2400 XT Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 128MB VRAM Mobility Radeon HD 2400 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Released 6 years and 9 months late

Boost Clock1124MHz

More VRAM (2GB vs 128GB)

Larger VRAM bandwidth (16.02GB/s vs 12.80GB/s)

344 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 840M +1559%

0.863 TFLOPS

Mobility Radeon HD 2400 XT Mac Edition

0.052 TFLOPS

GeForce 840M

VS

Mobility Radeon HD 2400 XT Mac Edition

Graphics Card

Mar 2014

Release Date

Jun 2007

GeForce 800M

Generation

M7x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 1.0 x16

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

128MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

64bit

16.02GB/s

Bandwidth

12.80GB/s

Render Config

-

Compute Units

2

-

384

Shading Units

40

16

TMUs

4

8

ROPs

4

-

64 KB (per SMM)

L1 Cache

-

1024 KB

L2 Cache

32 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

2.600 GPixel/s

17.98 GTexel/s

Texture Rate

2.600 GTexel/s

-

863.2 GFLOPS

FP32 (float)

52.00 GFLOPS

26.98 GFLOPS

FP64 (double)

-

Board Design

33W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

GM108

GPU Name

M74

N15S-GT

GPU Variant

M74-M (216RMAKA12FG)

Maxwell

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

Unknown

Transistors

0.18 billion

Unknown

Die Size

85 mm²

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.3

Vulkan

N/A

5.0

CUDA

-

5.1

Shader Model

4.0

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