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 P4
CORE STATE
GP104
VRAM
8 GB
CLOCK SPEED
1114 MHz
TDP
75 W
BUS WIDTH
256 bit
ARCHITECTURE
Pascal
PROCESS
16 nm
LAUNCH DATE
2016
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
840M
Tesla P4
Core Specs
Shading Units
384
2,560
+566.7%
Shaders
384
2,560
+566.7%
TMUs
16
160
+900.0%
ROPs
8
64
+700.0%
SM Count
—
20
Clocks
Base Clock
1029 MHz
886 MHz
Boost Clock
1124 MHz
1114 MHz
Memory Clock
1001 MHz
2 Gbps effective
1502 MHz
6 Gbps effective
Memory
Memory Size
2 GB
8 GB
VRAM (MB)
2,048
8,192
+300.0%
Memory Type
DDR3
GDDR5
Memory Bus
64 bit
256 bit
Bandwidth
16.02 GB/s
192.3 GB/s
Cache
L1 Cache
64 KB (per SMM)
48 KB (per SM)
L2 Cache
1024 KB
2 MB
Performance
Pixel Rate
8.992 GPixel/s
71.30 GPixel/s
Texture Rate
17.98 GTexel/s
178.2 GTexel/s
FP32 (TFLOPS)
863.2 GFLOPS
5.704 TFLOPS
FP64 (TFLOPS)
26.98 GFLOPS (1:32)
178.2 GFLOPS (1:32)
FP16 (TFLOPS)
—
89.12 GFLOPS (1:64)
Power
TDP
33 W
75 W
TDP (W)
33
75
+127.3%
Suggested PSU
—
250 W
Power Connectors
None
None
Architecture
Architecture
Maxwell
Pascal
GPU Name
GM108S
GP104
Generation
GeForce 800M
Tesla Pascal
(Pxx)
Process Size
28 nm
16 nm
Transistors
1,020 million
7,200 million
Die Size
77 mm²
314 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
22.9M / mm²
API Support
DirectX
12 (11_0)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
3.0
3.0
CUDA
5.0
6.1
Shader Model
6.7 (5.1)
6.8
Physical
Slot Width
IGP
Single-slot
Length
—
168 mm
6.6 inches
Outputs
Portable Device Dependent
No outputs
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
GeForce 700M
Tesla Maxwell
Successor
GeForce 900M
Tesla Volta