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
Quadro K3100M
CORE STATE
GK104
VRAM
4 GB
CLOCK SPEED
706 MHz
TDP
75 W
BUS WIDTH
256 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
840M
Quadro K3100M
Core Specs
Shading Units
384
768
+100.0%
Shaders
384
768
+100.0%
TMUs
16
64
+300.0%
ROPs
8
32
+300.0%
Clocks
Base Clock
1029 MHz
706 MHz
Boost Clock
1124 MHz
706 MHz
Memory Clock
1001 MHz
2 Gbps effective
800 MHz
3.2 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
DDR3
GDDR5
Memory Bus
64 bit
256 bit
Bandwidth
16.02 GB/s
102.4 GB/s
Cache
L1 Cache
64 KB (per SMM)
16 KB (per SMX)
L2 Cache
1024 KB
512 KB
Performance
Pixel Rate
8.992 GPixel/s
11.30 GPixel/s
Texture Rate
17.98 GTexel/s
45.18 GTexel/s
FP32 (TFLOPS)
863.2 GFLOPS
1,084.4 GFLOPS
FP64 (TFLOPS)
26.98 GFLOPS (1:32)
45.18 GFLOPS (1:24)
Power
TDP
33 W
75 W
TDP (W)
33
75
+127.3%
Power Connectors
None
None
Architecture
Architecture
Maxwell
Kepler
GPU Name
GM108S
GK104
Generation
GeForce 800M
Quadro Kepler-M
(Kx100M)
Process Size
28 nm
28 nm
Transistors
1,020 million
3,540 million
Die Size
77 mm²
294 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
12.0M / mm²
API Support
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.4
1.2.175
OpenCL
3.0
3.0
CUDA
5.0
3.0
Shader Model
6.7 (5.1)
6.5 (5.1)
Physical
Slot Width
IGP
MXM Module
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
MXM-B (3.0)
Other
Production
End-of-life
End-of-life
Predecessor
GeForce 700M
Quadro Fermi-M
Successor
GeForce 900M
Quadro Maxwell-M