GeForce GT 640 vs 945M
Aggregate performance score
We've compared GeForce 945M with GeForce GT 640, including specs and performance data.
945M outperforms GT 640 by an impressive 79% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 607 | 768 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.20 |
| Power efficiency | 5.07 | 3.27 |
| Architecture | Maxwell (2014−2017) | Kepler (2012−2018) |
| GPU code name | GM107 | GK107 |
| Market segment | Laptop | Desktop |
| Release date | 27 October 2015 (9 years ago) | 5 June 2012 (12 years ago) |
| Launch price (MSRP) | no data | $99 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
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 cores | 640 | 384 |
| Core clock speed | 928 MHz | 902 MHz |
| Boost clock speed | 1020 MHz | no data |
| Number of transistors | 1,870 million | 1,270 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 75 Watt | 65 Watt |
| Texture fill rate | 40.80 | 28.86 |
| Floating-point processing power | 1.306 TFLOPS | 0.6927 TFLOPS |
| ROPs | 16 | 16 |
| TMUs | 40 | 32 |
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 size | medium sized | no data |
| Bus support | PCI Express 3.0 | no data |
| Interface | MXM-B (3.0) | PCIe 3.0 x16 |
| Length | no data | 145 mm |
| Width | no data | 1-slot |
| Supplementary power connectors | None | None |
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 type | DDR3 | DDR3 |
| Maximum RAM amount | 2 GB | 2 GB |
| Memory bus width | 128 Bit | 128 Bit |
| Memory clock speed | 900 MHz | 891 MHz |
| Memory bandwidth | 28.8 GB/s | 28.51 GB/s |
| Shared memory | - | no data |
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 Connectors | No outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | - | + |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| GPU Boost | 2.0 | no data |
| Optimus | + | - |
| GameWorks | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 (11_0) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | + | 3.0 |
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.
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.
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.
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.
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:
| Full HD | 26
+85.7%
| 14−16
−85.7%
|
Cost per frame, $
| 1080p | no data | 7.07 |
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 9−10
+80%
|
5−6
−80%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 14−16
+100%
|
7−8
−100%
|
| Assassin's Creed Valhalla | 6−7
+100%
|
3−4
−100%
|
| Battlefield 5 | 14−16
+100%
|
7−8
−100%
|
| Call of Duty: Modern Warfare | 12−14
+100%
|
6−7
−100%
|
| Cyberpunk 2077 | 9−10
+80%
|
5−6
−80%
|
| Far Cry 5 | 12−14
+100%
|
6−7
−100%
|
| Far Cry New Dawn | 14−16
+87.5%
|
8−9
−87.5%
|
| Forza Horizon 4 | 35−40
+94.4%
|
18−20
−94.4%
|
| Hitman 3 | 10−12
+83.3%
|
6−7
−83.3%
|
| Horizon Zero Dawn | 30−35
+88.9%
|
18−20
−88.9%
|
| Metro Exodus | 14−16
+100%
|
7−8
−100%
|
| Red Dead Redemption 2 | 14−16
+87.5%
|
8−9
−87.5%
|
| Shadow of the Tomb Raider | 18−20
+90%
|
10−11
−90%
|
| Watch Dogs: Legion | 45−50
+100%
|
24−27
−100%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 14−16
+100%
|
7−8
−100%
|
| Assassin's Creed Valhalla | 6−7
+100%
|
3−4
−100%
|
| Battlefield 5 | 14−16
+100%
|
7−8
−100%
|
| Call of Duty: Modern Warfare | 12−14
+100%
|
6−7
−100%
|
| Cyberpunk 2077 | 9−10
+80%
|
5−6
−80%
|
| Far Cry 5 | 12−14
+100%
|
6−7
−100%
|
| Far Cry New Dawn | 14−16
+87.5%
|
8−9
−87.5%
|
| Forza Horizon 4 | 35−40
+94.4%
|
18−20
−94.4%
|
| Hitman 3 | 10−12
+83.3%
|
6−7
−83.3%
|
| Horizon Zero Dawn | 30−35
+88.9%
|
18−20
−88.9%
|
| Metro Exodus | 14−16
+100%
|
7−8
−100%
|
| Red Dead Redemption 2 | 14−16
+87.5%
|
8−9
−87.5%
|
| Shadow of the Tomb Raider | 18−20
+90%
|
10−11
−90%
|
| The Witcher 3: Wild Hunt | 53
+96.3%
|
27−30
−96.3%
|
| Watch Dogs: Legion | 45−50
+100%
|
24−27
−100%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 14−16
+100%
|
7−8
−100%
|
| Assassin's Creed Valhalla | 6−7
+100%
|
3−4
−100%
|
| Call of Duty: Modern Warfare | 12−14
+100%
|
6−7
−100%
|
| Cyberpunk 2077 | 9−10
+80%
|
5−6
−80%
|
| Far Cry 5 | 12−14
+100%
|
6−7
−100%
|
| Forza Horizon 4 | 35−40
+94.4%
|
18−20
−94.4%
|
| Hitman 3 | 10−12
+83.3%
|
6−7
−83.3%
|
| Horizon Zero Dawn | 30−35
+88.9%
|
18−20
−88.9%
|
| Shadow of the Tomb Raider | 18−20
+90%
|
10−11
−90%
|
| The Witcher 3: Wild Hunt | 9
+80%
|
5−6
−80%
|
| Watch Dogs: Legion | 45−50
+100%
|
24−27
−100%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 14−16
+87.5%
|
8−9
−87.5%
|
1440p
High Preset
| Battlefield 5 | 10−11
+100%
|
5−6
−100%
|
| Far Cry New Dawn | 8−9
+100%
|
4−5
−100%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 5−6
+150%
|
2−3
−150%
|
| Assassin's Creed Valhalla | 0−1 | 0−1 |
| Call of Duty: Modern Warfare | 5−6
+150%
|
2−3
−150%
|
| Cyberpunk 2077 | 2−3
+100%
|
1−2
−100%
|
| Far Cry 5 | 6−7
+100%
|
3−4
−100%
|
| Forza Horizon 4 | 14−16
+100%
|
7−8
−100%
|
| Hitman 3 | 9−10
+80%
|
5−6
−80%
|
| Horizon Zero Dawn | 12−14
+100%
|
6−7
−100%
|
| Metro Exodus | 4−5
+100%
|
2−3
−100%
|
| The Witcher 3: Wild Hunt | 4−5
+100%
|
2−3
−100%
|
| Watch Dogs: Legion | 35−40
+94.4%
|
18−20
−94.4%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 10−11
+100%
|
5−6
−100%
|
4K
High Preset
| Battlefield 5 | 4−5
+100%
|
2−3
−100%
|
| Far Cry New Dawn | 4−5
+100%
|
2−3
−100%
|
| Hitman 3 | 2−3
+100%
|
1−2
−100%
|
| Horizon Zero Dawn | 10−11
+100%
|
5−6
−100%
|
| Metro Exodus | 2−3
+100%
|
1−2
−100%
|
| The Witcher 3: Wild Hunt | 2−3
+100%
|
1−2
−100%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 3−4
+200%
|
1−2
−200%
|
| Assassin's Creed Valhalla | 2−3
+100%
|
1−2
−100%
|
| Call of Duty: Modern Warfare | 2−3
+100%
|
1−2
−100%
|
| Cyberpunk 2077 | 0−1 | 0−1 |
| Far Cry 5 | 3−4
+200%
|
1−2
−200%
|
| Forza Horizon 4 | 5−6
+150%
|
2−3
−150%
|
| Watch Dogs: Legion | 2−3
+100%
|
1−2
−100%
|
4K
Epic Preset
| Red Dead Redemption 2 | 6−7
+100%
|
3−4
−100%
|
This is how GeForce 945M and GT 640 compete in popular games:
- GeForce 945M is 86% faster in 1080p
Pros & cons summary
| Performance score | 5.46 | 3.05 |
| Recency | 27 October 2015 | 5 June 2012 |
| Power consumption (TDP) | 75 Watt | 65 Watt |
GeForce 945M has a 79% higher aggregate performance score, and an age advantage of 3 years.
GT 640, on the other hand, has 15.4% lower power consumption.
The GeForce 945M is our recommended choice as it beats the GeForce GT 640 in performance tests.
Be aware that GeForce 945M is a notebook card while GeForce GT 640 is a desktop one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
