GeForce 840M vs Radeon HD 8870M
We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 2GB VRAM Radeon HD 8870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 840M Advantages
Released 11 months late
Boost Clock has increased by 45% (1124MHz vs 775MHz)
Radeon HD 8870M Advantages
Larger VRAM bandwidth (72.00GB/s vs 16.02GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 840M
863
Radeon HD 8870M
+14%
992
3DMark Time Spy
GeForce 840M
497
Radeon HD 8870M
+35%
674
3DMark Time Spy Extreme
GeForce 840M
110
Radeon HD 8870M
+169%
296
Graphics Card
Mar 2014
Release Date
Apr 2013
GeForce 800M
Generation
Solar System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
1029 MHz
Base Clock
725 MHz
1124 MHz
Boost Clock
775 MHz
1001 MHz
Memory Clock
1125 MHz
Memory
2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
128bit
16.02GB/s
Bandwidth
72.00GB/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
12.40 GPixel/s
17.98 GTexel/s
Texture Rate
31.00 GTexel/s
863.2 GFLOPS
FP32 (float)
992.0 GFLOPS
26.98 GFLOPS
FP64 (double)
62.00 GFLOPS
Board Design
33W
TDP
Unknown
No outputs
Outputs
Portable Device Dependent
Graphics Processor
GM108
GPU Name
Venus
N15S-GT
GPU Variant
Venus XT
(216-0846000)
(216-0846000)
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)