Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 645M Quadro FX 3700M
Cyberpunk 2077 707% 823%
Assassins Creed: Valhalla 638% 744%
Call of Duty: Black Ops Cold War 614% 717%
Microsoft Flight Simulator 614% 717%
Immortals: Fenyx Rising 557% 652%
FIFA 21 307% 366%
World of Warcraft: Shadowlands 1057% 1224%
Watch Dogs Legion 679% 791%
Genshin Impact 707% 823%
Grand Theft Auto VI 1036% 1199%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 645M are very slightly better than the Nvidia Quadro FX 3700M.

The GeForce GT 645M was released over three years more recently than the Quadro FX 3700M, and so the GeForce GT 645M is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the Quadro FX 3700M when running the latest games.

The GeForce GT 645M has 1024 MB more video memory than the Quadro FX 3700M, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The Quadro FX 3700M has 22.4 GB/sec greater memory bandwidth than the GeForce GT 645M, which means that the memory performance of the Quadro FX 3700M is slightly better than the GeForce GT 645M.

The GeForce GT 645M has 384 Shader Processing Units and the Quadro FX 3700M has 128. However, the actual shader performance of the GeForce GT 645M is 273 and the actual shader performance of the Quadro FX 3700M is 70. The GeForce GT 645M having 203 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce GT 645M delivers a marginally smoother and more efficient experience when processing graphical data than the Quadro FX 3700M.

The GeForce GT 645M transistor size technology is 37 nm (nanometers) smaller than the Quadro FX 3700M. This means that the GeForce GT 645M is expected to run much cooler and achieve higher clock frequencies than the Quadro FX 3700M. While they exhibit similar graphical performance, the GeForce GT 645M should consume less power than the Quadro FX 3700M.

The GeForce GT 645M requires 32 Watts to run and the Quadro FX 3700M requires 75 Watts. The Quadro FX 3700M requires 43 Watts more than the GeForce GT 645M to run. The difference is significant enough that the Quadro FX 3700M may have a slight adverse affect on your yearly electricity bills in comparison to the GeForce GT 645M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed710 MHzvs550 MHz
Boost Clock-vs-
ArchitectureKepler GK107G92M
OC Potential Fair vs -
Driver Support Good vs -
Release Date01 Oct 2012vs14 Aug 2008
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
6.4
green tick vs -
1600x900
4.9
green tick vs -
1920x1080
3.4
green tick vs -
2560x1440
2.4
green tick vs -
3840x2160
1.5
green tick vs -

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed900 MHzvs800 MHz
Memory Bus128 Bitvs256 Bit
Memory TypeDDR3vsGDDR3
Memory Bandwidth28.8GB/secvs51.2GB/sec
L2 Cache 256 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs128
Actual Shader Performance13%vs3%
Technology28nmvs65nm
Texture Mapping Units32vs-
Texture Rate22.7 GTexel/svs-
Render Output Units16vs-
Pixel Rate11.4 GPixel/svs-
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs-
DVI Connections0vs-
HDMI Connections0vs-
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power32 Wattsvs75 Watts
Recommended PSU--

GPU Features

DirectX12.0vs10
Shader Model5.0vs4.0
Open GL4.5vs2.1
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfirenovsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3210M 2.5GHz-
Recommended RAM4 GB-
Maximum Recommended Gaming Resolution1366x768-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 645M is a Fast-Middle-Class Mobile Graphics Card based on the first revision of the Kepler Architecture.

Architecture
The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs.
Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU.

GPU
It equips a GPU Codenamed GK107 which has 2 Stream Multiprocessors activated and thus offers 384 Shader Processing Units, 32 TMUs and 16 ROPs. The Central Unit is clocked at 710MHz.

Memory
The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The Memory Clock Operates at 900MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for Optimus, CUDA, OpenCL, DirectCompute, 3D Vision Surround, PhysX, Realtime Raytracing and other technologies

Power Consumption
With a rated board TDP of 32W, it is suited for small laptops.

Performance
Gaming benchmarks indicate its performance stands somewhere between GeForce GT 640M & GeForce GT 650M.

System Suggestions
We recommend a decent processor (Intel Core i5 Mobile) and 4GB of RAM for a system with GeForce GT 645M.
The Quadro® FX 3700M high-end mobile workstation graphics solution with its revolutionary unified architecture, delivers 1 GB memory, excellent image quality, and optimized visual computing application performance pushing the limits of a 17" mobile workstation. The reference standard for OpenGL 2.1, DirectX 10, and Shader Model 4.0, Quadro FX 3700M enables next generation applications with new levels of interactivity to meet the demands of CAD engineers, graphics designers, and other technical design professionals.
Recommended CPU
-
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
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