NVIDIA GeForce GTX 770M vs NVIDIA GeForce 840M

VS

NVIDIA GeForce GTX 770M

NVIDIA GeForce 840M

We compared two Mobile platform GPUs: 3GB VRAM GeForce GTX 770M and 2GB VRAM GeForce 840M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 770M 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (96.19GB/s vs 16.02GB/s)

576 additional rendering cores

NVIDIA GeForce 840M 's Advantages

Released 10 months late

Boost Clock has increased by 41% (1124MHz vs 797MHz)

Lower TDP (33W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GTX 770M +77%

1.53 TFLOPS

GeForce 840M

0.863 TFLOPS

Blender

GeForce GTX 770M +70%

114

GeForce 840M

67

GeForce GTX 770M

VS

GeForce 840M

Graphics Card

May 2013

Release Date

Mar 2014

GeForce 700M

Generation

GeForce 800M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

706 MHz

Base Clock

1029 MHz

797 MHz

Boost Clock

1124 MHz

1002 MHz

Memory Clock

1001 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

64bit

96.19GB/s

Bandwidth

16.02GB/s

Render Config

-

960

Shading Units

384

80

TMUs

16

24

ROPs

8

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

384 KB

L2 Cache

1024 KB

-

Theoretical Performance

15.94 GPixel/s

Pixel Rate

8.992 GPixel/s

63.76 GTexel/s

Texture Rate

17.98 GTexel/s

-

1.530 TFLOPS

FP32 (float)

863.2 GFLOPS

63.76 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

75W

TDP

33W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

GK106

GPU Name

GM108

N14E-GS-A1

GPU Variant

N15S-GT

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

Unknown

221 mm²

Die Size

Unknown

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.0

5.1

Shader Model

5.1

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