GeForce 840M vs Radeon R7 M380
We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 4GB VRAM Radeon R7 M380 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 840M Advantages
Boost Clock has increased by 23% (1124MHz vs 915MHz)
Radeon R7 M380 Advantages
Released 1 years and 2 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (32.00GB/s vs 16.02GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 840M
863
Radeon R7 M380
+35%
1171
Graphics Card
Mar 2014
Release Date
May 2015
GeForce 800M
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
1029 MHz
Base Clock
900 MHz
1124 MHz
Boost Clock
915 MHz
1001 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
4GB
DDR3
Memory Type
DDR3
64bit
Memory Bus
128bit
16.02GB/s
Bandwidth
32.00GB/s
Render Config
-
Compute Units
10
384
Shading Units
640
16
TMUs
40
8
ROPs
16
64 KB (per SMM)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
256 KB
Theoretical Performance
8.992 GPixel/s
Pixel Rate
14.64 GPixel/s
17.98 GTexel/s
Texture Rate
36.60 GTexel/s
863.2 GFLOPS
FP32 (float)
1171 GFLOPS
26.98 GFLOPS
FP64 (double)
73.20 GFLOPS
Board Design
33W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
Graphics Processor
GM108
GPU Name
Tropo
N15S-GT
GPU Variant
Tropo XT
Maxwell
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
Unknown
Transistors
1.5 billion
Unknown
Die Size
123 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
2.1 (1.2)
1.3
Vulkan
1.2.170
5.0
CUDA
-
5.1
Shader Model
6.5 (5.1)