NVIDIA GeForce GT 640 GF116 vs NVIDIA GeForce GTX 650 GK106 Full Specs

Summary

144 Shaders 720MHz	384 Shaders 1.06GHz
2GB DDR342.8GB/s	1GB GDDR580GB/s
Peak·FP32·FP16 414.7 GFLOPS	Peak·FP32·FP16 812.5 GFLOPS
Form Factor PCIe Card	Form Factor PCIe Card
TDP 75W	TDP -
Power Connectors -	Power Connectors 1x 6-Pin

Highlights

Peak OPS

Peak OPS FP32 FP64 Memory Bandwidth TDP

GeForce GT 640 GF116414.7 GFLOPSFP32

x1

GeForce GTX 650 GK106812.5 GFLOPSFP32

x1.96

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Theoretical Performance

Clock Speed720MHz UC·Boost·OC	Clock Speed1058MHz UC·Boost·OC
Peak OPS 414.7 GFLOPSFP32	Peak OPS 812.5 GFLOPSFP32
FP32 414.7 GFLOPS	FP32 812.5 GFLOPS
FP64 34.56 GFLOPS	FP64 33.85 GFLOPS
Pixel Rate 34.6 GPixel/s	Pixel Rate 16.9 GPixel/s
Texture Rate 34.6 GTexel/s	Texture Rate 33.9 GTexel/s

Core Config

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

Clocks

Boost Clock 720MHz	Boost Clock 1.06GHz
Shader Clock 1.44GHz	Shader Clock -

Cache

L2 Cache 384KB shared

L2 Cache 512KB shared

Memory

2GB DDR3	1GB GDDR5
Memory Bus 192-bit	Memory Bus 128-bit
Memory Speed 1.8GT/s	Memory Speed 5GT/s
Memory Bandwidth 42.8GB/s	Memory Bandwidth 80GB/s
ECC No	ECC No

Power & Thermals

TDP 75W

TDP -

Video Output

Multi-Monitor 2

Multi-Monitor 2

Ports

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

Encoder

-	Encoder Model NVENC 1

Decoder

Decoder Model VP4

Decoder Model NVDEC 1

Card

Form Factor PCIe Card	Form Factor PCIe Card
PCIe 1.5-Slots	PCIe 1.5-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 30 mm (1.18")
Cooling Open-Air 1x Fan	Cooling Open-Air 1x Fan
Power Connectors -	Power Connectors 1x 6-Pin

Chip

Manufacturer NVIDIA	Manufacturer NVIDIA
Chip Designer NVIDIA	Chip Designer NVIDIA
Architecture Fermi	Architecture Kepler
Family GeForce 600	Family GeForce 600
Branding	Branding
Codename NVCF	Codename NVE6
Market Segment Desktop	Market Segment Desktop
Release Date Apr 24, 2012	Release Date Nov 27, 2013

Fabrication

Foundry TSMC	Foundry TSMC
Fabrication Node 40nm	Fabrication Node 28nm
Die Size 238mm²	Die Size 221mm²
Transistor Count 1.2 Billion	Transistor Count 2.5 Billion
Transistor Density 4.92 MTr/mm²	Transistor Density 11.49 MTr/mm²

Images

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Competitors

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NVIDIAGeForce GTX 650 GK106 vs GPU AMDRadeon 7CU 1800MHz RDNA 2