NVIDIA GeForce 840M vs NVIDIA GeForce 920MX

Graphics Processor

GPU model GM108 GM108
GPU variant N15S-GT N16V-GMR1-S
Architecture Maxwell Maxwell
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors unknown unknown
Die size unknown unknown

Mobile graphics

Release date Mar 12th, 2014 Mar 25th, 2016
Generation GeForce 800M GeForce 900M
Production End-of-life End-of-life
Interface PCIe 3.0 x8 PCIe 3.0 x8
Predecessor GeForce 700M GeForce 800M
Successor GeForce 900M GeForce 10 Mobile

Clocks

Base clock 1029 MHz 965 MHz
Boost clock 1124 MHz 993 MHz
Memory clock 1001 MHz 2 Gbps effective 900 MHz 1800 Mbps effective

Memory Configuration

Memory size 2 GB 2 GB
Memory type DDR3 DDR3
Memory bus width 64 bit 64 bit
Bandwidth 16.02 GB/s 14.40 GB/s

Render Configuration

Shading units 384 256
TMUs 16 24
ROPs 8 8
SMM count 3 2
Cache L1 64 KB (per SMM) 64 KB (per SMM)
Cache L2 1024 KB 1024 KB

Performance

Pixel rate 8.992 GPixel/s 7.944 GPixel/s
Texture rate 17.98 GTexel/s 23.83 GTexel/s
FP32 (float) performance 863.2 GFLOPS 508.4 GFLOPS
FP64 (double) performance 26.98 GFLOPS (1:32) 15.89 GFLOPS (1:32)

Dimensions & Outputs

Slot width IGP MXM Module
TDP 33 W 16 W
Outputs No outputs No outputs
Power connectors None

API Support & Features

DirectX 12 (11_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 3.0 3.0
Vulkan 1.1 1.1
CUDA 5.0 5.0
Shader model 5.1 5.1

Other Features

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