GeForce GT 645M
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GeForce_GT_645M
FPS System Benchmark
56 FPS
High
Nvidia PC game performance check GeForce GT 645M
GPU
Architecture
Kepler GK107
Process
28nm
TMUs
32
Texture Rate
23 GTexel/s
ROPs
16
Pixel Rate
11 GPixel/s
Shader
Processing Units (Cuda Cores)
384
Driver Support
golden star golden star golden star golden star empty star
Compatibility
Direct X
DX 12.0
Shader
5.0
Open GL
4.5
Resolution (WxH)
4096x2160
Notebook GPU
SLI/Crossfire
Dedicated
Integrated
Memory
Memory
2048 MB
Memory Speed
900 MHz
Memory Bus
128 Bit
Memory Type
DDR3
Memory Bandwidth
28.8GB/sec
L2 Cache
256KB
Clock Speeds
Core Speed
710 MHz
Power
Max Power
32 Watts
Recommended Hardware
Best CPU Match
Best RAM Match
4 GB
Best Resolution
1366 x 768
GPU Upgrade
Resolution Performance
1366x768 1600x900 1920x1080 2560x1440 3840x2160
6.4
4.9
3.4
2.4
1.5
GeForce GT 645M Game Requirement Analysis

Overview
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.


Source [Pip]
Compare the GeForce GT 645M to any other GPU
GPU:
Laptop: NoYes
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Release period
01-Oct-2012
3
GeForce GT 645M vs Avg. AAA Game System Requirements
Avg. AAA Recommended Requirements
CPU
0%
Graphics Card
436%
RAM
11GB
0%
VS
VS
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Hellblade: Senuas Sacrifice 421% 600%
Grand Theft Auto VI 143% 780%
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GeForce GT 645M Extras
PC Builder