GeForce GT 640 Rev. 2 vs 945M
Aggregate performance score
We've compared GeForce 945M with GeForce GT 640 Rev. 2, including specs and performance data.
945M outperforms 640 Rev. 2 by an impressive 53% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 668 | 784 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.19 |
| Power efficiency | 5.15 | 5.16 |
| Architecture | Maxwell (2014−2017) | Kepler 2.0 (2013−2015) |
| GPU code name | GM107 | GK208 |
| Market segment | Laptop | Desktop |
| Release date | 27 October 2015 (10 years ago) | 29 May 2013 (12 years ago) |
| Launch price (MSRP) | no data | $89 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
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 | 1046 MHz |
| Boost clock speed | 1020 MHz | no data |
| Number of transistors | 1,870 million | 915 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 75 Watt | 49 Watt |
| Texture fill rate | 40.80 | 33.47 |
| Floating-point processing power | 1.306 TFLOPS | 0.8033 TFLOPS |
| ROPs | 16 | 8 |
| TMUs | 40 | 32 |
| L1 Cache | 320 KB | 32 KB |
| L2 Cache | 2 MB | 128 KB |
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 2.0 x8 |
| 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 | GDDR5 |
| Maximum RAM amount | 2 GB | 1 GB |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 900 MHz | 1252 MHz |
| Memory bandwidth | 28.8 GB/s | 40.06 GB/s |
| Shared memory | - | - |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | No outputs | 1x DVI, 1x HDMI, 1x VGA |
| 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 and SDK support
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 | + | 3.5 |
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 | 27
+68.8%
| 16−18
−68.8%
|
Cost per frame, $
| 1080p | no data | 5.56 |
FPS performance in popular games
Full HD
Low
| Counter-Strike 2 | 21−24
+64.3%
|
14−16
−64.3%
|
| Cyberpunk 2077 | 10−11
+66.7%
|
6−7
−66.7%
|
| Hogwarts Legacy | 10−11
+66.7%
|
6−7
−66.7%
|
Full HD
Medium
| Battlefield 5 | 21−24
+75%
|
12−14
−75%
|
| Counter-Strike 2 | 21−24
+64.3%
|
14−16
−64.3%
|
| Cyberpunk 2077 | 10−11
+66.7%
|
6−7
−66.7%
|
| Far Cry 5 | 16−18
+60%
|
10−11
−60%
|
| Fortnite | 30−33
+66.7%
|
18−20
−66.7%
|
| Forza Horizon 4 | 24−27
+71.4%
|
14−16
−71.4%
|
| Forza Horizon 5 | 14−16
+55.6%
|
9−10
−55.6%
|
| Hogwarts Legacy | 10−11
+66.7%
|
6−7
−66.7%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 20−22
+66.7%
|
12−14
−66.7%
|
| Valorant | 60−65
+55%
|
40−45
−55%
|
Full HD
High
| Battlefield 5 | 21−24
+75%
|
12−14
−75%
|
| Counter-Strike 2 | 21−24
+64.3%
|
14−16
−64.3%
|
| Counter-Strike: Global Offensive | 85−90
+58.2%
|
55−60
−58.2%
|
| Cyberpunk 2077 | 10−11
+66.7%
|
6−7
−66.7%
|
| Dota 2 | 40−45
+59.3%
|
27−30
−59.3%
|
| Far Cry 5 | 16−18
+60%
|
10−11
−60%
|
| Fortnite | 30−33
+66.7%
|
18−20
−66.7%
|
| Forza Horizon 4 | 24−27
+71.4%
|
14−16
−71.4%
|
| Forza Horizon 5 | 14−16
+55.6%
|
9−10
−55.6%
|
| Grand Theft Auto V | 16−18
+70%
|
10−11
−70%
|
| Hogwarts Legacy | 10−11
+66.7%
|
6−7
−66.7%
|
| Metro Exodus | 10−11
+66.7%
|
6−7
−66.7%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 20−22
+66.7%
|
12−14
−66.7%
|
| The Witcher 3: Wild Hunt | 17
+70%
|
10−11
−70%
|
| Valorant | 60−65
+55%
|
40−45
−55%
|
Full HD
Ultra
| Battlefield 5 | 21−24
+75%
|
12−14
−75%
|
| Cyberpunk 2077 | 10−11
+66.7%
|
6−7
−66.7%
|
| Dota 2 | 40−45
+59.3%
|
27−30
−59.3%
|
| Far Cry 5 | 16−18
+60%
|
10−11
−60%
|
| Forza Horizon 4 | 24−27
+71.4%
|
14−16
−71.4%
|
| Hogwarts Legacy | 10−11
+66.7%
|
6−7
−66.7%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 20−22
+66.7%
|
12−14
−66.7%
|
| The Witcher 3: Wild Hunt | 9
+80%
|
5−6
−80%
|
| Valorant | 60−65
+55%
|
40−45
−55%
|
Full HD
Epic
| Fortnite | 30−33
+66.7%
|
18−20
−66.7%
|
1440p
High
| Counter-Strike 2 | 10−11
+66.7%
|
6−7
−66.7%
|
| Counter-Strike: Global Offensive | 35−40
+62.5%
|
24−27
−62.5%
|
| Grand Theft Auto V | 4−5
+100%
|
2−3
−100%
|
| Metro Exodus | 4−5
+100%
|
2−3
−100%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 35−40
+66.7%
|
21−24
−66.7%
|
| Valorant | 55−60
+60%
|
35−40
−60%
|
1440p
Ultra
| Battlefield 5 | 5−6
+66.7%
|
3−4
−66.7%
|
| Cyberpunk 2077 | 4−5
+100%
|
2−3
−100%
|
| Far Cry 5 | 10−11
+66.7%
|
6−7
−66.7%
|
| Forza Horizon 4 | 12−14
+71.4%
|
7−8
−71.4%
|
| Hogwarts Legacy | 5−6
+66.7%
|
3−4
−66.7%
|
| The Witcher 3: Wild Hunt | 7−8
+75%
|
4−5
−75%
|
1440p
Epic
| Fortnite | 10−11
+66.7%
|
6−7
−66.7%
|
4K
High
| Grand Theft Auto V | 16−18
+60%
|
10−11
−60%
|
| Hogwarts Legacy | 0−1 | 0−1 |
| The Witcher 3: Wild Hunt | 1−2 | 0−1 |
| Valorant | 24−27
+56.3%
|
16−18
−56.3%
|
4K
Ultra
| Battlefield 5 | 2−3
+100%
|
1−2
−100%
|
| Cyberpunk 2077 | 1−2 | 0−1 |
| Dota 2 | 18−20
+80%
|
10−11
−80%
|
| Far Cry 5 | 4−5
+100%
|
2−3
−100%
|
| Forza Horizon 4 | 7−8
+75%
|
4−5
−75%
|
| Hogwarts Legacy | 0−1 | 0−1 |
| PLAYERUNKNOWN'S BATTLEGROUNDS | 5−6
+66.7%
|
3−4
−66.7%
|
4K
Epic
| Fortnite | 5−6
+66.7%
|
3−4
−66.7%
|
This is how GeForce 945M and GT 640 Rev. 2 compete in popular games:
- GeForce 945M is 69% faster in 1080p
Pros & cons summary
| Performance score | 4.98 | 3.26 |
| Recency | 27 October 2015 | 29 May 2013 |
| Maximum RAM amount | 2 GB | 1 GB |
| Power consumption (TDP) | 75 Watt | 49 Watt |
GeForce 945M has a 52.8% higher aggregate performance score, an age advantage of 2 years, and a 100% higher maximum VRAM amount.
GT 640 Rev. 2, on the other hand, has 53.1% lower power consumption.
The GeForce 945M is our recommended choice as it beats the GeForce GT 640 Rev. 2 in performance tests.
Be aware that GeForce 945M is a notebook graphics card while GeForce GT 640 Rev. 2 is a desktop one.
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