NVIDIA GeForce GT 645M vs Intel HD Graphics 4000

Price now 310$
Games supported 60%
NVIDIA GeForce GT 645M
NVIDIA GeForce GT 645M
  • Interface PCIe 3.0 x16
  • Core clock speed Up to 710 MHz
  • Max video memory 2048 MB
  • Memory type DDR3\GDDR5
  • Memory clock speed 1800
  • Maximum resolution
Intel HD Graphics 4000
HD Graphics 4000
  • Interface PCIe 1.0 x16
  • Core clock speed 350
  • Max video memory System Shared
  • Memory type System Shared
  • Memory clock speed System Shared
  • Maximum resolution
Price now 91$
Games supported 54%
Graphics card Graphics card NVIDIA GeForce GT 645M vs Intel HD Graphics 4000

General info

Comparison of graphics card architecture, market segment, value for money and other general parameters.

Place in performance rating667882
Value for money0.220.13
ArchitectureKeplerGen. 7 Ivy Bridge
GPU code nameN13P-GSIvy Bridge
Market segmentLaptopLaptop
Release date22 March 2012 (9 years ago)23 March 2011 (10 years ago)
Price now$310 $91
Value for money

To get the index we compare the characteristics of video cards and their relative prices.

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Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores38416
CUDA cores384no data
Core clock speedno data350 MHz
Boost clock speedno data1350 MHz
Number of transistors1,270 million1,200 million
Manufacturing process technology28 nm22 nm
Thermal design power (TDP)32 Wattno data
Texture fill rate22.7 billion/sec20.80
Floating-point performance544.5 gflops33.6 gflops

Compatibility, dimensions and requirements

Information on GeForce GT 645M and HD Graphics 4000 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 sizemedium sizedno data
Bus supportPCI Express 2.0, PCI Express 3.0no data
InterfacePCIe 3.0 x16PCIe 1.0 x16


Parameters of memory installed: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated VRAM and use a shared part of system RAM.

Memory typeDDR3\GDDR5System Shared
Maximum RAM amount2 GBno data
Memory bus width128bit64/128 Bit
Memory clock speed1800 MHzno data
Shared memory-+

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputsNo outputs
HDMI+no data
HDCP+no data
Maximum VGA resolutionUp to 2048x1536no data


Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray+no data
Optimus+no data
Quick Syncno data+

API support

APIs supported, including particular versions of those APIs.

DirectX12 API11.1 (11_0)
Shader Model5.15.0
CUDA+no data

Benchmark performance

Non-gaming benchmark performance comparison. Note that overall benchmark performance is measured in points in 0-100 range.

Overall score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GT 645M 3.59
HD Graphics 4000 1.70
  • 3DMark Cloud Gate GPU
  • 3DMark Fire Strike Score
  • 3DMark Fire Strike Graphics
  • 3DMark 11 Performance GPU
  • 3DMark Vantage Performance
  • Unigine Heaven 3.0
  • Passmark

Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.

GT 645M 8655
HD Graphics 4000 3769
GT 645M 1147
HD Graphics 4000 444

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature seemingly made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic enough graphics and is quite taxing on hardware.

GT 645M 1152
HD Graphics 4000 480

3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.

GT 645M 1845
HD Graphics 4000 523

3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.

GT 645M 7357
HD Graphics 4000 2959

This is an old DirectX 11 benchmark using Unigine, a 3D game engine by eponymous Russian company. It displays a fantasy medieval town sprawling over several flying islands. Version 3.0 was released in 2012, and in 2013 it was superseded by Heaven 4.0, which introduced several slight improvements, including a newer version of Unigine.

GT 645M 18
HD Graphics 4000 7

This is probably the most ubiquitous benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

GT 645M 957
HD Graphics 4000 454

Mining hashrates

Cryptocurrency mining performance of GeForce GT 645M and HD Graphics 4000. Usually measured in megahashes per second.

Bitcoin / BTC (SHA256) 19 Mh/s no data

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Here are the average frames per second in a large set of popular games across different resolutions:


Advantages and disadvantages

Performance rating 3.59 1.70
Novelty 22 March 2012 23 March 2011
Memory bus width 128 64
Pipelines / CUDA cores 384 16
Chip lithography 28 nm 22 nm

Judging by the results of synthetic and gaming tests, Technical City recommends

NVIDIA GeForce GT 645M
NVIDIA GeForce GT 645M

since it shows better performance.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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Competitors of GeForce GT 645M by AMD

We believe that the nearest equivalent to GeForce GT 645M from AMD is Radeon R7 M260X, which is slower by 1% and lower by 2 positions in our rating.

AMD Radeon R7 M260X Radeon R7 M260X

Here are some closest AMD rivals to GeForce GT 645M:

Similar GPU comparisons

We selected several comparisons of video cards with performance more or less close to those reviewed, providing you with more probable options to consider.

User rating

Here you can see the user rating of the graphics cards, as well as rate them yourself.

28 ratings
NVIDIA GeForce GT 645M
NVIDIA GeForce GT 645M
2074 ratings
Intel HD Graphics 4000
Intel HD Graphics 4000

Questions and comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.