NVIDIA GeForce GT 645M technical specs and benchmarks

NVIDIA GeForce GT 645M

Summary

NVIDIA started GeForce GT 645M sales 22 March 2012. This is a Kepler architecture desktop card based on 28 nm manufacturing process and primarily aimed at gamers. 2 GB of DDR3\GDDR5 memory clocked at 1.8 GHz are supplied, and together with 128bit memory interface this creates a bandwidth of Up to 64.0 GB/s.

Compatibility-wise, this is card attached via PCIe 3.0 x16 interface. Its power consumption is at 32 Watt.

It provides poor gaming and benchmark performance at 5.05 percent of a leader's which is NVIDIA Quadro P6000.

General info

Info on video card type (desktop or notebook), its architecture and sales start time and price.
Place in performance rating
 
Architecture
Kepler
 
Code name
N13P-GS
 
Type
Laptop
 
Release date
22 March 2012
 

Technical specs

Quantitative parameters such as shaders number, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly say of video card performance, but to be more precise you have to review it's benchmark and gaming test results.
Pipelines
384
 
of 8192 (FirePro S9300 X2)
CUDA cores
384 cores
 
Core clock speed
Up to 710 MHz
 
of 1607
Transistor count
1,270 million
 
of 21100 (Tesla V100 PCIe)
Manufacturing process technology
28 nm
 
Power consumption (TDP)
32 Watt
 
of 900 (Tesla S2050)
Texture fill rate
22.7 billion/sec
 
of 512 (Radeon Pro Duo)
Floating-point performance
544.5 gflops
 
of 16384 (Radeon Pro Duo)

Compatibility, dimensions and requirements

Information on video card compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus - if the video card is inserted into the slot instead of being soldered to the notebook motherboard.
Laptop size
medium sized
 
Bus support
PCI Express 2.0, PCI Express 3.0
 
Interface
PCIe 3.0 x16
 

Memory specs

Parameters of memory installed on the video card - type, size, bus, clock and resulting bandwidth. GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Memory type
DDR3\GDDR5
 
Maximum RAM amount
2 GB
 
Memory bus width
128bit
 
of 8192 (FirePro S9300 X2)
Memory clock speed
1800 MHz
 
of 11408 (TITAN Xp)
Memory bandwidth
Up to 64.0 GB/s
 
of 1024 (FirePro S9300 X2)
Shared memory
-
 

Video outputs and ports

Video connectors present on the video card. Mostly actual for desktop video cards since notebook ones' available video connectors vastly depend on the notebook model.
HDMI
+
 
HDCP
+
 
Maximum VGA resolution
Up to 2048x1536
 

Technologies

Technological solutions supported by the GPU. You'll probably need this information if you require some particular technology.
3D Blu-Ray
+
 
3D Vision
+
 
Optimus
+
 
CUDA
+
 
DirectX 11
DirectX 11
 
DirectCompute
+
 

API support

APIs supported by video card, sometimes including their particular versions.
DirectX
12 API
 
OpenGL
4.5
 
OpenCL
1.1
 

Video card benchmarks performance

Non-gaming benchmarks performance. Overall benchmark performance is measured in points in 0-100 range.
Overall benchmark performance
5.05
 
 
3DMark Cloud Gate GPU
8654.50
 
 
3DMark Fire Strike Score
1146.50
 
 
3DMark Fire Strike Graphics
1151.50
 
 
3DMark 11 Performance GPU
1844.50
 
 
3DMark Vantage Performance
7356.50
 
 
Unigine Heaven 3.0
17.65
 
 
Passmark
859
 
 
Octane Render OctaneBench
9
 
 

Mining hashrate

Video card cryptocurrency mining capabilities. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
19 Mh/s
 
 

Game benchmarks (in FPS)

How good for gaming a particular GPU is. Gaming benchmark results are measured in FPS. Overall gaming performance is a number in 0-100 range, and the older the game, the less impact it has on the overall grade of the video card.
Overall gaming performance
0.32
 
 
Games benchmarked by notebookcheck.net
Crysis 3 (2013)
low / 768p
46.60
 
medium / 768p
27.60
 
high / 768p
18.60
 
ultra / 1080p
7.00
 
Diablo III (2012)
low / 768p
139.70
 
medium / 768p
91.80
 
high / 768p
81.25
 
ultra / 1080p
49.80
 
The Elder Scrolls V: Skyrim (2011)
low / 720p
62.90
 
medium / 768p
45.90
 
high / 768p
34.10
 
ultra / 1080p
18.70
 
Counter-Strike: GO (2012)
low / 768p
204.70
 
medium / 768p
158.30
 
high / 768p
103.80
 
ultra / 1080p
58.20
 

Relative perfomance

Overall video card performance compared to nearest competitors. All GPU types participate.

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