NVIDIA GeForce GT 640 OEM Rebrand vs NVIDIA GeForce GTX 750

Table of Contents

Graphics Processor

GPU model GF116 GM107
GPU variant GF116-150-A1 GM107-300-A2
Architecture Fermi 2.0 Maxwell
Foundry TSMC TSMC
Manufacturing process 40 nm 28 nm
Number of transistors 1,170 million 1,870 million
Die size 238 mm² 148 mm²

Graphics Card

Release date Apr 24th, 2012 Feb 18th, 2014
Generation GeForce 600 GeForce 700
Production End-of-life End-of-life
Interface PCIe 2.0 x16 PCIe 3.0 x16
Predecessor GeForce 500 GeForce 600
Successor GeForce 700 GeForce 900
Launch price 119 USD
Reviews 10 in our database

Clocks

GPU clock 720 MHz
Shader clock 1440 MHz
Memory clock 800 MHz 1600 Mbps effective 1253 MHz 5 Gbps effective
Base clock 1020 MHz
Boost clock 1085 MHz

Memory Configuration

Memory size 1536 MB 1024 MB
Memory type DDR3 GDDR5
Memory bus width 192 bit 128 bit
Bandwidth 38.40 GB/s 80.19 GB/s

Render Configuration

Shading units 144 512
TMUs 24 32
ROPs 24 16
SM count 3
Cache L1 64 KB (per SM) 64 KB (per SMM)
Cache L2 384 KB 2 MB
SMM count 4

Performance

Pixel rate 4.320 GPixel/s 17.36 GPixel/s
Texture rate 17.28 GTexel/s 34.72 GTexel/s
FP32 (float) performance 414.7 GFLOPS 1,111 GFLOPS
FP64 (double) performance 34.56 GFLOPS (1:12) 34.72 GFLOPS (1:32)

Dimensions & Outputs

Slot width Single-slot Single-slot
Length 145 mm 5.7 inches 145 mm 5.7 inches
TDP 75 W 55 W
Suggested PSU 250 W 250 W
Outputs 2x DVI1x mini-HDMI 2x DVI1x mini-HDMI
Power connectors None None
Board number P1062 P2010

API Support & Features

DirectX 12 (11_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.1 3.0
Vulkan 1.1
CUDA 2.1 5.0
Shader model 5.1 5.1

Other Features

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