NVIDIA GeForce 840M vs NVIDIA GeForce GT 320M

VS

NVIDIA GeForce 840M

NVIDIA GeForce GT 320M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 1024MB VRAM GeForce GT 320M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Released 4 years late

Boost Clock1124MHz

More VRAM (2GB vs 1024GB)

360 additional rendering cores

NVIDIA GeForce GT 320M 's Advantages

Larger VRAM bandwidth (25.28GB/s vs 16.02GB/s)

Lower TDP (23W vs 33W)

Score

Benchmark

FP32 (float)

GeForce 840M +1528%

0.863 TFLOPS

GeForce GT 320M

0.053 TFLOPS

GeForce 840M

VS

GeForce GT 320M

Graphics Card

Mar 2014

Release Date

Mar 2010

GeForce 800M

Generation

GeForce 300M

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

790 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

25.28GB/s

Render Config

-

SM Count

3

384

Shading Units

24

16

TMUs

8

ROPs

8

-

64 KB (per SMM)

L1 Cache

-

1024 KB

L2 Cache

64 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

4.000 GPixel/s

17.98 GTexel/s

Texture Rate

4.000 GTexel/s

-

863.2 GFLOPS

FP32 (float)

52.80 GFLOPS

26.98 GFLOPS

FP64 (double)

-

Board Design

33W

TDP

23W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

GT216

N15S-GT

GPU Variant

-

Maxwell

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

Unknown

Transistors

0.486 billion

Unknown

Die Size

100 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.0

CUDA

1.2

5.1

Shader Model

4.1

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