GeForce 840M and Steam Deck GPU - video card comparison
GeForce 840M
Steam Deck GPU
Architecture
Maxwell (2014−2018)
RDNA 2.0 (2020−2022)
GPU code name
N15S-GT
Van Gogh
Market segment
Laptop
Desktop
Release date
March 2014
February 2022
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
-
Supplementary power connectors
-
None
Boost clock speed
1124 MHz
1600 MHz
Core clock speed
1029 MHz
-
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
-
2,400 million
Pipelines / CUDA cores
384
512
Power consumption (TDP)
33 Watt
15 Watt
Texture fill rate
17.98
51.20
Memory type
DDR3
LPDDR5
Maximum RAM amount
4 GB
16 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
5.5 GB/s
Memory bandwidth
16.02 GB/s
88 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x USB Type-C
DirectX
12 (11_0)
12 (12_1)
CUDA
+
-
OpenCL
1.2
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-