GPU Comparison
GEFORCE
NVIDIA GeForce 840M
CORE STATE
GM108S
VRAM
2 GB
CLOCK SPEED
1124 MHz
TDP
33 W
BUS WIDTH
64 bit
ARCHITECTURE
Maxwell
PROCESS
28 nm
LAUNCH DATE
2014
VS
GEFORCE
GeForce GTX 950M
CORE STATE
GM107
VRAM
4 GB
CLOCK SPEED
1124 MHz
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
840M
GTX 950M
Core Specs
Shading Units
384
640
+66.7%
Shaders
384
640
+66.7%
TMUs
16
40
+150.0%
ROPs
8
16
+100.0%
Clocks
Base Clock
1029 MHz
993 MHz
Boost Clock
1124 MHz
1124 MHz
Memory Clock
1001 MHz
2 Gbps effective
900 MHz
1800 Mbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
DDR3
DDR3
Memory Bus
64 bit
128 bit
Bandwidth
16.02 GB/s
28.80 GB/s
Cache
L1 Cache
64 KB (per SMM)
64 KB (per SMM)
L2 Cache
1024 KB
2 MB
Performance
Pixel Rate
8.992 GPixel/s
17.98 GPixel/s
Texture Rate
17.98 GTexel/s
44.96 GTexel/s
FP32 (TFLOPS)
863.2 GFLOPS
1,438.7 GFLOPS
FP64 (TFLOPS)
26.98 GFLOPS (1:32)
44.96 GFLOPS (1:32)
Power
TDP
33 W
75 W
TDP (W)
33
75
+127.3%
Power Connectors
None
None
Architecture
Architecture
Maxwell
Maxwell
GPU Name
GM108S
GM107
Generation
GeForce 800M
GeForce 900M
Process Size
28 nm
28 nm
Transistors
1,020 million
1,870 million
Die Size
77 mm²
148 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
12.6M / mm²
API Support
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
3.0
3.0
CUDA
5.0
5.0
Shader Model
6.7 (5.1)
6.7 (5.1)
Physical
Slot Width
IGP
IGP
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
GeForce 700M
GeForce 800M
Successor
GeForce 900M
GeForce 10 Mobile