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
Tesla C2075
CORE STATE
GF110
VRAM
6 GB
CLOCK SPEED
—
TDP
247 W
BUS WIDTH
384 bit
ARCHITECTURE
Fermi 2.0
PROCESS
40 nm
LAUNCH DATE
2011
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
840M
Tesla C2075
Core Specs
Shading Units
384
448
+16.7%
Shaders
384
448
+16.7%
TMUs
16
56
+250.0%
ROPs
8
48
+500.0%
SM Count
—
14
Clocks
Base Clock
1029 MHz
—
Boost Clock
1124 MHz
—
GPU Clock
—
574 MHz
Shader Clock
—
1147 MHz
Memory Clock
1001 MHz
2 Gbps effective
783 MHz
3.1 Gbps effective
Memory
Memory Size
2 GB
6 GB
VRAM (MB)
2,048
6,144
+200.0%
Memory Type
DDR3
GDDR5
Memory Bus
64 bit
384 bit
Bandwidth
16.02 GB/s
150.3 GB/s
Cache
L1 Cache
64 KB (per SMM)
64 KB (per SM)
L2 Cache
1024 KB
768 KB
Performance
Pixel Rate
8.992 GPixel/s
16.07 GPixel/s
Texture Rate
17.98 GTexel/s
32.14 GTexel/s
FP32 (TFLOPS)
863.2 GFLOPS
1,027.7 GFLOPS
FP64 (TFLOPS)
26.98 GFLOPS (1:32)
513.9 GFLOPS (1:2)
Power
TDP
33 W
247 W
TDP (W)
33
247
+648.5%
Suggested PSU
—
550 W
Power Connectors
None
1x 6-pin + 1x 8-pin
Architecture
Architecture
Maxwell
Fermi 2.0
GPU Name
GM108S
GF110
Generation
GeForce 800M
Tesla Fermi
(x20xx)
Process Size
28 nm
40 nm
Transistors
1,020 million
3,000 million
Die Size
77 mm²
520 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
5.8M / mm²
API Support
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.4
—
OpenCL
3.0
1.1
CUDA
5.0
2.0
Shader Model
6.7 (5.1)
5.1
Physical
Slot Width
IGP
Dual-slot
Length
—
248 mm
9.8 inches
Outputs
Portable Device Dependent
1x DVI
Bus Interface
PCIe 3.0 x8
PCIe 2.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
GeForce 700M
Tesla
Successor
GeForce 900M
Tesla Kepler