Home GPU Comparison NVIDIA GeForce 840M vs NVIDIA GeForce GTX 780M Mac Edition

NVIDIA GeForce 840M vs NVIDIA GeForce GTX 780M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 4GB VRAM GeForce GTX 780M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages
Boost Clock has increased by 41% (1124MHz vs 797MHz)
Lower TDP (33W vs 122W)
NVIDIA GeForce GTX 780M Mac Edition 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 16.02GB/s)
1152 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce 840M
0.863 TFLOPS
GeForce GTX 780M Mac Edition +183%
2.448 TFLOPS
VS

Graphics Card

Mar 2014
Release Date
Nov 2013
GeForce 800M
Generation
GeForce 700M
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
MXM-B (3.0)

Clock Speeds

1029 MHz
Base Clock
771 MHz
1124 MHz
Boost Clock
797 MHz
1001 MHz
Memory Clock
1250 MHz

Memory

2GB
Memory Size
4GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
256bit
16.02GB/s
Bandwidth
160.0GB/s

Render Config

-
-
-
-
-
-
384
Shading Units
1536
16
TMUs
128
8
ROPs
32
-
-
-
-
-
-
64 KB (per SMM)
L1 Cache
16 KB (per SMX)
1024 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

8.992 GPixel/s
Pixel Rate
25.50 GPixel/s
17.98 GTexel/s
Texture Rate
102.0 GTexel/s
-
-
-
863.2 GFLOPS
FP32 (float)
2.448 TFLOPS
26.98 GFLOPS
FP64 (double)
102.0 GFLOPS

Board Design

33W
TDP
122W
-
-
-
No outputs
Outputs
No outputs
-
-
-

Graphics Processor

GM108
GPU Name
GK104
N15S-GT
GPU Variant
N14E-GTX-A2
Maxwell
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
Unknown
Transistors
3.54 billion
Unknown
Die Size
294 mm²

Graphics Features

12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
5.0
CUDA
3.0
5.1
Shader Model
5.1

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