Nvidia GeForce RTX 3070 Mobile vs Nvidia GeForce GTX 645

Nvidia GeForce RTX 3070 Mobile on Amazon USA
Nvidia GeForce GTX 645 on Amazon USA

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.

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

Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price. This is why we prefer for the moment not to show a price. You should refer to the respective online stores for the latest price, as well as availability.

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%.

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.


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

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