NVIDIA GeForce GT 640 1GB vs NVIDIA GeForce GT 440 3SM Full Specs

Summary

384 Shaders 797MHz	144 Shaders 810MHz
1GB DDR328.5GB/s	2GB DDR343.2GB/s
Peak·FP32·FP16 612.1 GFLOPS	Peak·FP32·FP16 466.6 GFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 50W	TDP 56W

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth TDP

GeForce GT 640 1GB612.1 GFLOPSFP32

x1.31

GeForce GT 440 3SM466.6 GFLOPSFP32

x1

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Theoretical Performance

Clock Speed797MHz UC·Boost·OC	Clock Speed810MHz UC·Boost·OC
Peak OPS 612.1 GFLOPSFP32	Peak OPS 466.6 GFLOPSFP32
FP32 612.1 GFLOPS	FP32 466.6 GFLOPS
FP64 25.5 GFLOPS	FP64 38.88 GFLOPS
Pixel Rate 12.8 GPixel/s	Pixel Rate 38.9 GPixel/s
Texture Rate 25.5 GTexel/s	Texture Rate 38.9 GTexel/s

Core Config

Shaders 384 Shaders	Shaders 144 Shaders
TMUs 32 TMUs	TMUs 24 TMUs
ROPs 16 ROPs	ROPs 24 ROPs
SMs 2 SMs	SMs 3 SMs

Clocks

Boost Clock 797MHz	Boost Clock 810MHz
Shader Clock -	Shader Clock 1.62GHz

Cache

L2 Cache 256KB shared

L2 Cache 384KB shared

Memory

1GB DDR3	2GB DDR3
Memory Bus 128-bit	Memory Bus 192-bit
Memory Speed 1.8GT/s	Memory Speed 1.8GT/s
Memory Bandwidth 28.5GB/s	Memory Bandwidth 43.2GB/s
ECC No	ECC No

Power & Thermals

TDP 50W

TDP 56W

Video Output

Multi-Monitor 2

Multi-Monitor 2

Ports

1x HDMI 1.4	-
-	1x HDMI 1.3
1x DVI-I Dual-Link	1x DVI-I Dual-Link
1x VGA	1x VGA

Encoder

Encoder Model NVENC 1

-

Decoder

Decoder Model NVDEC 1

Decoder Model VP4

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 1.5-Slots	PCIe 1-Slots
Height 111 mm (4.37") Width 145 mm (5.71") Depth 30 mm (1.18")	Height 111 mm (4.37") Width 145 mm (5.71") Depth 20 mm (0.79")
Cooling Open-Air 1x Fan	Cooling Blower 1x Fan

Chip

Manufacturer NVIDIA	Manufacturer NVIDIA
Chip Designer NVIDIA	Chip Designer NVIDIA
Architecture Kepler	Architecture Fermi
Family GeForce 600	Family GeForce 400
Branding	Branding
Codename NVE7	Codename NVC3
Market Segment Desktop	Market Segment Desktop
Release Date Apr 24, 2012	Release Date Oct 11, 2010

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 28nm	Fabrication Node 40nm
Die Size 118mm²	Die Size 238mm²
Transistor Count 1.3 Billion	Transistor Count 1.2 Billion
Transistor Density 10.76 MTr/mm²	Transistor Density 4.92 MTr/mm²

Images

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Competitors

NVIDIAGeForce GT 640 1GB vs GPU AMDRadeon RX 7400 NVIDIAGeForce GT 640 1GB vs GPU MSIGeForce RTX 3050 LP 6G OC NVIDIAGeForce GT 640 1GB vs GPU GIGABYTEGeForce RTX 3050 OC Low Profile 6G Show 4 more

NVIDIAGeForce GT 440 3SM vs GPU IntelUHD 710 1450MHz NVIDIAGeForce GT 440 3SM vs GPU AMDRadeon RX 7400 NVIDIAGeForce GT 440 3SM vs GPU MSIGeForce RTX 3050 LP 6G OC Show 4 more