NVIDIA GeForce 840M vs NVIDIA GeForce GTX 760A

Graphics Processor

GPU model GM108 GK106
GPU variant N15S-GT N14E-GL-A1
Architecture Maxwell Kepler
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors unknown 2,540 million
Die size unknown 221 mm²

Mobile graphics

Release date Mar 12th, 2014 Mar 17th, 2014
Generation GeForce 800M GeForce 700A
Production End-of-life End-of-life
Interface PCIe 3.0 x8 PCIe 3.0 x16
Predecessor GeForce 700M GeForce 600A
Successor GeForce 900M GeForce 800A

Clocks

Base clock 1029 MHz 628 MHz
Boost clock 1124 MHz 657 MHz
Memory clock 1001 MHz 2 Gbps effective 1002 MHz 4 Gbps effective

Memory Configuration

Memory size 2 GB 2 GB
Memory type DDR3 GDDR5
Memory bus width 64 bit 128 bit
Bandwidth 16.02 GB/s 64.13 GB/s

Render Configuration

Shading units 384 768
TMUs 16 64
ROPs 8 16
SMM count 3
Cache L1 64 KB (per SMM) 16 KB (per SMX)
Cache L2 1024 KB 256 KB
SMX count 4

Performance

Pixel rate 8.992 GPixel/s 10.51 GPixel/s
Texture rate 17.98 GTexel/s 42.05 GTexel/s
FP32 (float) performance 863.2 GFLOPS 1,009 GFLOPS
FP64 (double) performance 26.98 GFLOPS (1:32) 42.05 GFLOPS (1:24)

Dimensions & Outputs

Slot width IGP
TDP 33 W 55 W
Outputs No outputs No outputs

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 3.0
Shader model 5.1 5.1

Other Features

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