NVIDIA GeForce GT 635M vs NVIDIA GeForce GT 820M

Table of Contents

Graphics Processor

GPU model GF108 GF117
Architecture Fermi Fermi 2.0
Foundry TSMC TSMC
Manufacturing process 40 nm 28 nm
Number of transistors 585 million 585 million
Die size 116 mm² 116 mm²
GPU variant N15V-GM

Mobile graphics

Release date Mar 22nd, 2012 Nov 27th, 2013
Generation GeForce 600M GeForce 800M
Production End-of-life End-of-life
Interface MXM-A (3.0) PCIe 2.0 x16
Predecessor GeForce 500M GeForce 700M
Successor GeForce 700M GeForce 900M

Clocks

GPU clock 660 MHz 775 MHz
Shader clock 1320 MHz 1550 MHz
Memory clock 900 MHz 1800 Mbps effective 900 MHz 1800 Mbps effective

Memory Configuration

Memory size 1024 MB 1024 MB
Memory type DDR3 DDR3
Memory bus width 64 bit 64 bit
Bandwidth 14.40 GB/s 14.40 GB/s

Render Configuration

Shading units 96 96
TMUs 16 16
ROPs 4 8
SM count 2 2
Cache L1 64 KB (per SM) 64 KB (per SM)
Cache L2 128 KB 128 KB

Performance

Pixel rate 2.640 GPixel/s 3.100 GPixel/s
Texture rate 10.56 GTexel/s 12.40 GTexel/s
FP32 (float) performance 253.4 GFLOPS 297.6 GFLOPS
FP64 (double) performance 21.12 GFLOPS (1:12) 24.80 GFLOPS (1:12)

Dimensions & Outputs

Slot width MXM Module
TDP 33 W 15 W
Outputs No outputs No outputs

API Support & Features

DirectX 12 (11_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.1 1.1
Vulkan
CUDA 2.1 2.1
Shader model 5.1 5.1

Other Features

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