NVIDIA GeForce GT 640 vs NVIDIA Quadro K620M

Table of Contents

Graphics Processor

GPU model GK107 GM108
GPU variant GK107-300-A2 N15M-Q3
Architecture Kepler Maxwell
Foundry TSMC TSMC
Manufacturing process 28 nm 28 nm
Number of transistors 1,270 million unknown
Die size 118 mm² unknown

Graphics Card

Release date Jun 5th, 2012
Generation GeForce 600
Production End-of-life
Launch price 99 USD
Interface PCIe 3.0 x16
Predecessor GeForce 500
Successor GeForce 700

Clocks

GPU clock 902 MHz
Memory clock 891 MHz 1782 Mbps effective 900 MHz 1800 Mbps effective
Base clock 1029 MHz
Boost clock 1124 MHz

Memory Configuration

Memory size 2 GB 2 GB
Memory type DDR3 DDR3
Memory bus width 128 bit 64 bit
Bandwidth 28.51 GB/s 14.40 GB/s

Render Configuration

Shading units 384 384
TMUs 32 16
ROPs 16 8
SMX count 2
Cache L1 16 KB (per SMX) 64 KB (per SMM)
Cache L2 256 KB 1024 KB
SMM count 2

Performance

Pixel rate 7.216 GPixel/s 8.992 GPixel/s
Texture rate 28.86 GTexel/s 17.98 GTexel/s
FP32 (float) performance 692.7 GFLOPS 863.2 GFLOPS
FP64 (double) performance 28.86 GFLOPS (1:24) 26.98 GFLOPS (1:32)

Dimensions & Outputs

Slot width Single-slot MXM Module
Length 145 mm 5.7 inches
TDP 65 W 30 W
Suggested PSU 250 W
Outputs 1x DVI1x HDMI1x DisplayPort No outputs
Power connectors None None
Board number P2011

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 3.0 5.0
Shader model 5.1 5.1

Other Features

Mobile graphics

Release date Mar 1st, 2015
Generation Quadro Mobile (Kx200M)
Production End-of-life
Interface MXM-A (3.0)
Reviews 26 in our database

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