Nvidia GeForce RTX 3070 Mobile vs Nvidia GeForce GTX 645

Comparison of the technical characteristics between the graphics cards, with Nvidia GeForce RTX 3070 Mobile on one side and Nvidia GeForce GTX 645 on the other side. The first is dedicated to the laptop sector, it has 5120 shading units, a maximum frequency of 1.6 GHz, its lithography is 8 nm. The second is used on the desktop segment, it includes 576 shading units, a maximum frequency of 0.8 GHz, its lithography is 28 nm. The following table also compares the boost clock, the number of shading units (if indicated), of execution units, the amount of cache memory, the maximum memory capacity, the memory bus width, the release date, the number of PCIe lanes, the values ​​obtained in various benchmarks.

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Specification comparison:

Graphics card		Nvidia GeForce RTX 3070 Mobile				Nvidia GeForce GTX 645
Market (main)		Laptop				Desktop
Release date		Q1 2021				Q2 2013
Model number		GA104-770-A1				GK106-200-A1
GPU name		GA104				GK106
Architecture		Ampere				Fermi 2.0
Generation		GeForce 30 Mobile				GeForce 600
Lithography		8 nm				28 nm
Transistors		17,400,000,000				2,540,000,000
Bus interface		PCIe 4.0 x16				PCIe 3.0 x16
GPU base clock		1,110 MHz				824 MHz
GPU boost clock		1,560 MHz				824 MHz
Memory frequency		1,750 MHz				1,000 MHz
Effective memory speed		14 Gbps				4 Gbps
Memory size		8 GB				1 GB
Memory type		GDDR6				GDDR5
Memory bus		256 bit				128 bit
Memory bandwidth		448.0 GB/s				64.0 GB/s
TDP		115 W				65 W
Cores (compute units, SM, SMX)		40				3
Shading units (cuda cores)		5,120				576
TMUs		160				48
ROPs		80				16
Cache memory		4 MB				256 KB
Pixel fillrate		124.8 GP/s				9.9 GP/s
Texture fillrate		249.6 GT/s				39.6 GT/s
Performance FP32 (float)		16.0 TFLOPS				949.2 GFLOPS
Performance FP64 (double)		249.6 GFLOPS				39.6 GFLOPS
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We can better compare what are the technical differences between the two graphics cards.

Performance comparison with the benchmarks:

Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench 4.

	FP32 Performance in GFLOPS
Nvidia GeForce RTX 3070 Mobile	15,970
Nvidia GeForce GTX 645	949.2

The difference is 1582%.

Note: Commissions may be earned from the links above. These scores are only an
average of the performances got with these graphics cards, you may get different results.

Single precision floating point format, also known as FP32, is a computer number format that typically occupies 32 bits in PC memory. This represents a wide dynamic range of numeric values that employs a floating point.

Equivalence:

Nvidia GeForce RTX 3070 Mobile AMD equivalentNvidia GeForce GTX 645 AMD equivalent

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