GeForce GT 640M vs 940M

VS

Aggregate performance score

We've compared GeForce 940M and GeForce GT 640M, covering specs and all relevant benchmarks.

GeForce 940M
2015
2 GB DDR3, 75 Watt
2.92
+21.7%

940M outperforms GT 640M by a significant 22% based on our aggregate benchmark results.

Primary details

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

Place in the ranking785843
Place by popularitynot in top-100not in top-100
Power efficiency6.065.14
ArchitectureMaxwell (2014−2017)Kepler (2012−2018)
GPU code nameGM108GK107
Market segmentLaptopLaptop
Release date13 March 2015 (9 years ago)22 March 2012 (12 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores384384
Core clock speed1072 MHzUp to 625 MHz
Boost clock speed1176 MHz645 MHz
Number of transistors1,870 million1,270 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)75 Watt32 Watt
Texture fill rate28.2220.00
Floating-point processing power0.9032 TFLOPS0.48 TFLOPS
ROPs816
TMUs2432

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop sizemedium sizedmedium sized
Bus supportPCI Express 3.0PCI Express 2.0, PCI Express 3.0
InterfacePCIe 3.0 x8PCIe 3.0 x16

VRAM capacity and type

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 typeDDR3DDR3\GDDR5
Maximum RAM amount2 GB2 GB
Memory bus width64 Bit128bit
Memory clock speed900 MHz900 MHz
Memory bandwidth14.4 GB/sUp to 64.0 GB/s
Shared memory--

Connectivity and outputs

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-+
HDCP-+
Maximum VGA resolutionno dataUp to 2048x1536

Supported technologies

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

3D Blu-Ray-+
GPU Boost2.0no data
Optimus++
GameWorks+-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX12 (11_0)12 API
Shader Model5.15.1
OpenGL4.54.5
OpenCL1.21.1
Vulkan1.1.1261.1.126
CUDA++

Synthetic benchmark performance

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


Combined synthetic benchmark score

This is our combined benchmark 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.

GeForce 940M 2.92
+21.7%
GT 640M 2.40

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of 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.

GeForce 940M 1125
+21.8%
GT 640M 924

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.

GeForce 940M 2406
+39.2%
GT 640M 1728

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.

GeForce 940M 7531
+1.4%
GT 640M 7425

3DMark Fire Strike Graphics

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 made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

GeForce 940M 1622
+32.4%
GT 640M 1225

3DMark Cloud Gate GPU

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.

GeForce 940M 8819
GT 640M 9024
+2.3%

GeekBench 5 OpenCL

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.

GeForce 940M 5926
+86.1%
GT 640M 3184

3DMark Ice Storm GPU

Ice Storm Graphics is an obsolete benchmark, part of 3DMark suite. Ice Storm was used to measure entry level laptops and Windows-based tablets performance. It utilizes DirectX 11 feature level 9 to display a battle between two space fleets near a frozen planet in 1280x720 resolution. Discontinued in January 2020, it is now superseded by 3DMark Night Raid.

GeForce 940M 123311
+52.5%
GT 640M 80836

GeekBench 5 Vulkan

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses Vulkan API by AMD & Khronos Group.

GeForce 940M 4908
+79.6%
GT 640M 2732

GeekBench 5 CUDA

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses CUDA API by NVIDIA.

GeForce 940M 5882
+167%
GT 640M 2200

Octane Render OctaneBench

This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.

GeForce 940M 11
+22.2%
GT 640M 9

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:

900p30−35
+15.4%
26
−15.4%
Full HD18
−22.2%
22
+22.2%
1200p21−24
+10.5%
19
−10.5%
1440p96
+28%
75−80
−28%
4K29
+38.1%
21−24
−38.1%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 6−7
+20%
5−6
−20%

Full HD
Medium Preset

Assassin's Creed Odyssey 9−10
+12.5%
8−9
−12.5%
Assassin's Creed Valhalla 1−2 0−1
Battlefield 5 15
+400%
3−4
−400%
Call of Duty: Modern Warfare 10
+66.7%
6−7
−66.7%
Cyberpunk 2077 6−7
+20%
5−6
−20%
Far Cry 5 12
+200%
4−5
−200%
Far Cry New Dawn 15
+150%
6−7
−150%
Forza Horizon 4 41
+273%
10−12
−273%
Hitman 3 8−9
+14.3%
7−8
−14.3%
Horizon Zero Dawn 21−24
+10%
20−22
−10%
Metro Exodus 3−4
+200%
1−2
−200%
Red Dead Redemption 2 14
+180%
5−6
−180%
Shadow of the Tomb Raider 21
+90.9%
10−12
−90.9%
Watch Dogs: Legion 35−40
+5.4%
35−40
−5.4%

Full HD
High Preset

Assassin's Creed Odyssey 9−10
+12.5%
8−9
−12.5%
Assassin's Creed Valhalla 1−2 0−1
Battlefield 5 5−6
+66.7%
3−4
−66.7%
Call of Duty: Modern Warfare 7−8
+16.7%
6−7
−16.7%
Cyberpunk 2077 6−7
+20%
5−6
−20%
Far Cry 5 10
+150%
4−5
−150%
Far Cry New Dawn 8−9
+33.3%
6−7
−33.3%
Forza Horizon 4 34
+209%
10−12
−209%
Hitman 3 8−9
+14.3%
7−8
−14.3%
Horizon Zero Dawn 21−24
+10%
20−22
−10%
Metro Exodus 3−4
+200%
1−2
−200%
Red Dead Redemption 2 7−8
+40%
5−6
−40%
Shadow of the Tomb Raider 12−14
+9.1%
10−12
−9.1%
The Witcher 3: Wild Hunt 24
+33.3%
18
−33.3%
Watch Dogs: Legion 35−40
+5.4%
35−40
−5.4%

Full HD
Ultra Preset

Assassin's Creed Odyssey 9−10
+12.5%
8−9
−12.5%
Assassin's Creed Valhalla 1−2 0−1
Call of Duty: Modern Warfare 7−8
+16.7%
6−7
−16.7%
Cyberpunk 2077 6−7
+20%
5−6
−20%
Far Cry 5 8
+100%
4−5
−100%
Forza Horizon 4 14−16
+36.4%
10−12
−36.4%
Hitman 3 8−9
+14.3%
7−8
−14.3%
Horizon Zero Dawn 21−24
+10%
20−22
−10%
Shadow of the Tomb Raider 12−14
+9.1%
10−12
−9.1%
The Witcher 3: Wild Hunt 6
−117%
12−14
+117%
Watch Dogs: Legion 35−40
+5.4%
35−40
−5.4%

Full HD
Epic Preset

Red Dead Redemption 2 10
+100%
5−6
−100%

1440p
High Preset

Battlefield 5 5−6
+25%
4−5
−25%
Far Cry New Dawn 4−5
+0%
4−5
+0%

1440p
Ultra Preset

Assassin's Creed Odyssey 2−3
+0%
2−3
+0%
Call of Duty: Modern Warfare 2−3
+100%
1−2
−100%
Cyberpunk 2077 1−2
+0%
1−2
+0%
Far Cry 5 3−4
+0%
3−4
+0%
Hitman 3 8−9
+14.3%
7−8
−14.3%
Horizon Zero Dawn 7−8
+16.7%
6−7
−16.7%
The Witcher 3: Wild Hunt 2−3
+0%
2−3
+0%
Watch Dogs: Legion 16−18
+21.4%
14−16
−21.4%

1440p
Epic Preset

Red Dead Redemption 2 6−7
+20%
5−6
−20%

4K
High Preset

Battlefield 5 1−2 0−1
Far Cry New Dawn 2−3
+100%
1−2
−100%

4K
Ultra Preset

Assassin's Creed Odyssey 2−3
+0%
2−3
+0%
Assassin's Creed Valhalla 1−2
+0%
1−2
+0%
Call of Duty: Modern Warfare 1−2
+0%
1−2
+0%
Far Cry 5 1−2
+0%
1−2
+0%
Forza Horizon 4 0−1 0−1
Watch Dogs: Legion 1−2 0−1

4K
Epic Preset

Red Dead Redemption 2 4−5
+33.3%
3−4
−33.3%

This is how GeForce 940M and GT 640M compete in popular games:

  • GeForce 940M is 15% faster in 900p
  • GT 640M is 22% faster in 1080p
  • GeForce 940M is 11% faster in 1200p
  • GeForce 940M is 28% faster in 1440p
  • GeForce 940M is 38% faster in 4K

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

  • in Battlefield 5, with 1080p resolution and the Medium Preset, the GeForce 940M is 400% faster.
  • in The Witcher 3: Wild Hunt, with 1080p resolution and the Ultra Preset, the GT 640M is 117% faster.

All in all, in popular games:

  • GeForce 940M is ahead in 46 tests (82%)
  • GT 640M is ahead in 1 test (2%)
  • there's a draw in 9 tests (16%)

Pros & cons summary


Performance score 2.92 2.40
Recency 13 March 2015 22 March 2012
Power consumption (TDP) 75 Watt 32 Watt

GeForce 940M has a 21.7% higher aggregate performance score, and an age advantage of 2 years.

GT 640M, on the other hand, has 134.4% lower power consumption.

The GeForce 940M is our recommended choice as it beats the GeForce GT 640M in performance tests.


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

Vote for your favorite

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


NVIDIA GeForce 940M
GeForce 940M
NVIDIA GeForce GT 640M
GeForce GT 640M

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

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


3.3 679 votes

Rate GeForce 940M on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.7 312 votes

Rate GeForce GT 640M on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

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