AMD Radeon HD 6740G2 vs NVIDIA GeForce GT 645M

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Combined performance score

GT 645M
2.39
+44.8%

GeForce GT 645M outperforms Radeon HD 6740G2 by 45% in our combined benchmark results.

General info

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance ranking801898
Place by popularitynot in top-100not in top-100
Value for money0.22no data
ArchitectureKepler (2012−2018)Terascale 2 (2009−2015)
GPU code nameN13P-GSno data
Market segmentLaptopLaptop
Release date22 March 2012 (12 years old)14 June 2011 (12 years old)
Current price$310 no data
Value for money

Performance to price ratio. The higher, the better.

no data

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 cores384880
CUDA cores384no data
Core clock speedUp to 710 MHzno data
Number of transistors1,270 millionno data
Manufacturing process technology28 nm40 nm
Power consumption (TDP)32 Wattno data
Texture fill rate22.7 billion/secno data
Floating-point performance544.5 gflopsno data

Size and compatibility

Information on GeForce GT 645M and Radeon HD 6740G2 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 sizedmedium sized
Bus supportPCI Express 2.0, PCI Express 3.0no data
InterfacePCIe 3.0 x16no data

Memory

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeDDR3\GDDR5no data
Maximum RAM amount2 GBno data
Memory bus width128bitno data
Memory clock speed1800 MHzno data
Memory bandwidthUp to 64.0 GB/sno 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 data
HDMI+no data
HDCP+no data
Maximum VGA resolutionUp to 2048x1536no data

Technologies

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

API support

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX12 API11
Shader Model5.1no data
OpenGL4.5no data
OpenCL1.1no data
Vulkan1.1.126no data
CUDA+no data

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark performance score. 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 2.39
+44.8%
HD 6740G2 1.65

GeForce GT 645M outperforms Radeon HD 6740G2 by 45% in our combined benchmark results.


3DMark Vantage Performance

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.

Benchmark coverage: 17%

GT 645M 7357
+44.6%
HD 6740G2 5088

GeForce GT 645M outperforms Radeon HD 6740G2 by 45% in 3DMark Vantage Performance.

3DMark 11 Performance GPU

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.

Benchmark coverage: 17%

GT 645M 1845
+15.5%
HD 6740G2 1597

GeForce GT 645M outperforms Radeon HD 6740G2 by 15% in 3DMark 11 Performance GPU.

Gaming performance

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

Average FPS across all PC games

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

900p30
+66.7%
18−21
−66.7%
Full HD24
+50%
16−18
−50%

Performance in popular games

Full HD
Low Preset

Cyberpunk 2077 5−6
+25%
4−5
−25%

Full HD
Medium Preset

Assassin's Creed Odyssey 3−4
+200%
1−2
−200%
Battlefield 5 4−5
+300%
1−2
−300%
Call of Duty: Modern Warfare 10−12
+10%
10−11
−10%
Cyberpunk 2077 5−6
+25%
4−5
−25%
Far Cry 5 3−4 0−1
Far Cry New Dawn 2−3
+100%
1−2
−100%
Forza Horizon 4 5−6
+150%
2−3
−150%
Hitman 3 4−5
+100%
2−3
−100%
Horizon Zero Dawn 4−5
+100%
2−3
−100%
Red Dead Redemption 2 5−6
+25%
4−5
−25%
Shadow of the Tomb Raider 9−10
+28.6%
7−8
−28.6%
Watch Dogs: Legion 0−1 0−1

Full HD
High Preset

Assassin's Creed Odyssey 3−4
+200%
1−2
−200%
Battlefield 5 4−5
+300%
1−2
−300%
Call of Duty: Modern Warfare 10−12
+10%
10−11
−10%
Cyberpunk 2077 5−6
+25%
4−5
−25%
Far Cry 5 3−4 0−1
Far Cry New Dawn 2−3
+100%
1−2
−100%
Forza Horizon 4 5−6
+150%
2−3
−150%
Hitman 3 4−5
+100%
2−3
−100%
Horizon Zero Dawn 4−5
+100%
2−3
−100%
Metro Exodus 3−4
+50%
2−3
−50%
Red Dead Redemption 2 5−6
+25%
4−5
−25%
Shadow of the Tomb Raider 9−10
+28.6%
7−8
−28.6%
The Witcher 3: Wild Hunt 6−7
+20%
5−6
−20%
Watch Dogs: Legion 0−1 0−1

Full HD
Ultra Preset

Assassin's Creed Odyssey 3−4
+200%
1−2
−200%
Battlefield 5 4−5
+300%
1−2
−300%
Cyberpunk 2077 5−6
+25%
4−5
−25%
Far Cry 5 3−4 0−1
Far Cry New Dawn 2−3
+100%
1−2
−100%
Forza Horizon 4 5−6
+150%
2−3
−150%
The Witcher 3: Wild Hunt 6−7
+20%
5−6
−20%
Watch Dogs: Legion 0−1 0−1

1440p
High Preset

Call of Duty: Modern Warfare 5−6
+25%
4−5
−25%
Hitman 3 5−6
+25%
4−5
−25%
Horizon Zero Dawn 9−10
+0%
9−10
+0%
Metro Exodus 1−2 0−1
Red Dead Redemption 2 1−2 0−1
Shadow of the Tomb Raider 6−7
+20%
5−6
−20%

1440p
Ultra Preset

Cyberpunk 2077 1−2
+0%
1−2
+0%
Far Cry 5 4−5
+33.3%
3−4
−33.3%
Forza Horizon 4 0−1 0−1
The Witcher 3: Wild Hunt 2−3
+0%
2−3
+0%

4K
High Preset

Call of Duty: Modern Warfare 2−3
+0%
2−3
+0%
Hitman 3 2−3
+0%
2−3
+0%
Horizon Zero Dawn 8−9
+0%
8−9
+0%
Red Dead Redemption 2 1−2 0−1

4K
Ultra Preset

Assassin's Creed Odyssey 1−2 0−1
Assassin's Creed Valhalla 1−2 0−1
Cyberpunk 2077 0−1 0−1
Far Cry 5 4−5
+33.3%
3−4
−33.3%
Far Cry New Dawn 6−7
+20%
5−6
−20%

This is how GT 645M and HD 6740G2 compete in popular games:

900p resolution:

  • GT 645M is 66.7% faster than HD 6740G2

1080p resolution:

  • GT 645M is 50% faster than HD 6740G2

Here's the range of performance differences observed across popular games:

  • in Battlefield 5, with 1080p resolution and the Medium Preset, the GT 645M is 300% faster than the HD 6740G2.

All in all, in popular games:

  • GT 645M is ahead in 32 tests (84%)
  • there's a draw in 6 tests (16%)

Advantages and disadvantages


Performance score 2.39 1.65
Recency 22 March 2012 14 June 2011
Chip lithography 28 nm 40 nm

The GeForce GT 645M is our recommended choice as it beats the Radeon HD 6740G2 in performance tests.


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

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA GeForce GT 645M
GeForce GT 645M
AMD Radeon HD 6740G2
Radeon HD 6740G2

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