NVIDIA GeForce GT 645M: specs and benchmarks

NVIDIA GeForce GT 645M

Summary

NVIDIA started GeForce GT 645M sales 1 October 2012. This is Kepler architecture notebook card based on 28 nm manufacturing process and primarily aimed at office use. 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. Power consumption is at 32 Watt.

It provides poor gaming and benchmark performance at 4.81 percent of a leader's which is AMD Radeon R9 390 X2.

General info

Of GeForce GT 645M's architecture, market type and release date.
Place in performance rating
 
Architecture
Kepler
 
Code name
GK107
 
Type
Laptop
 
Release date
1 October 2012
 

Technical specs

GeForce GT 645M's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce GT 645M's performance, but for precise assessment you have to consider its benchmark and gaming test results.
Pipelines
384
 
of 8192 (Radeon Pro Duo)
CUDA cores
384
 
Core clock speed
Up to 710 MHz
 
Transistor count
1,270 million
 
of 21100
Manufacturing process technology
28 nm
 
of 12
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 GeForce GT 645M's compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a 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 GeForce GT 645M: its type, size, bus, clock and resulting bandwidth. Note that 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
 
of 32
Memory bus width
128bit
 
of 8192 (Radeon Pro Duo)
Memory clock speed
1800 MHz
 
of 11408 (TITAN Xp)
Memory bandwidth
Up to 64.0 GB/s
 
of 1024 (Radeon Pro Duo)
Shared memory
-
 

Video outputs and ports

Types and number of video connectors present on GeForce GT 645M.
Display Connectors
No outputs
 
HDMI
+
 
HDCP
+
 
Maximum VGA resolution
Up to 2048x1536
 

Technologies

Technological solutions and APIs supported by GeForce GT 645M. You'll probably need this information if you need some particular technology for your purposes.
3D Blu-Ray
+
 
3D Vision
+
 
Optimus
+
 
CUDA
+
 
DirectX 11
DirectX 11
 
DirectCompute
+
 

API support

APIs supported by GeForce GT 645M, sometimes including their particular versions.
DirectX
12 API
 
OpenGL
4.5
 
OpenCL
1.1
 

Video card benchmarks performance

Non-gaming benchmarks performance of GeForce GT 645M. Note that overall benchmark performance is measured in points in 0-100 range.
Overall benchmark performance
4.67
 
 
3DMark Ice Storm GPU
50698.00
 
 
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
875
 
 
Octane Render OctaneBench
9
 
 

Mining hashrate

Cryptocurrency mining performance of GeForce GT 645M. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
19 Mh/s
 
 

Game benchmarks (in FPS)

Let's see how good GeForce GT 645M is for gaming. Particular gaming benchmark results are measured in FPS, while overall gaming performance is a number in 0-100 range, and the older the game, the less impact it has on the overall grade.
Overall gaming performance
0.02
 
 
Games can run, %
At minimum settings
90.65
At recommended settings
67.1
New games support
40
Games benchmarked by notebookcheck.net
Crysis 3 (2013)
low / 768p
46.60
 
medium / 768p
27.60
 
high / 768p
18.60
 
ultra / 1080p
7.00
 
Tomb Raider (2013)
low / 768p
97.20
 
medium / 768p
52.70
 
high / 768p
34.20
 
ultra / 1080p
13.10
 
Counter-Strike: GO (2012)
low / 768p
204.70
 
medium / 768p
158.30
 
high / 768p
103.80
 
ultra / 1080p
58.20
 
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
 

Relative perfomance

Overall GeForce GT 645M performance compared to its nearest competitors. All GPU types participate.

AMD equivalent

We believe that the nearest equivalent to GeForce GT 645M from AMD is Radeon HD 7690M, which is faster by 1% and higher by 2 positions in our rating.

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Advices and comments

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