GeForce GT 620M vs 840A
Aggregate performance score
We've compared GeForce 840A and GeForce GT 620M, covering specs and all relevant benchmarks.
840A outperforms GT 620M by a whopping 165% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 773 | 1072 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 6.23 | 5.17 |
| Architecture | Maxwell (2014−2017) | Fermi (2010−2014) |
| GPU code name | GM108 | GF108 |
| Market segment | Laptop | Laptop |
| Release date | 17 March 2014 (10 years ago) | 23 August 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 cores | 384 | 96 |
| Core clock speed | 1029 MHz | Up to 625 MHz |
| Boost clock speed | 1124 MHz | 715 MHz |
| Number of transistors | no data | 585 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 33 Watt | 15 Watt |
| Texture fill rate | 17.98 | 10.56 |
| Floating-point processing power | 0.8632 TFLOPS | 0.2534 TFLOPS |
| ROPs | 8 | 4 |
| TMUs | 16 | 16 |
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 | no data | medium sized |
| Bus support | no data | PCI Express 2.0 |
| Interface | PCIe 3.0 x8 | PCIe 2.0 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 type | DDR3 | DDR3 |
| Maximum RAM amount | 2 GB | 1 GB |
| Memory bus width | 64 Bit | Up to 128bit |
| Memory clock speed | 1001 MHz | 900 MHz |
| Memory bandwidth | 16.02 GB/s | Up to 28.8 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 | No outputs |
| HDMI | - | + |
| HDCP | - | + |
| Maximum VGA resolution | no data | Up to 2048x1536 |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| 3D Blu-Ray | - | + |
| Optimus | - | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 API |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.1.126 | N/A |
| CUDA | 5.0 | + |
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.
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 | 95−100
+157%
| 37
−157%
|
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 5−6
+0%
|
5−6
+0%
|
| Call of Duty: Modern Warfare | 4−5
+0%
|
4−5
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Far Cry New Dawn | 2−3
+0%
|
2−3
+0%
|
| Forza Horizon 4 | 1−2
+0%
|
1−2
+0%
|
| Hitman 3 | 5−6
+0%
|
5−6
+0%
|
| Horizon Zero Dawn | 12−14
+0%
|
12−14
+0%
|
| Red Dead Redemption 2 | 1−2
+0%
|
1−2
+0%
|
| Shadow of the Tomb Raider | 7−8
+0%
|
7−8
+0%
|
| Watch Dogs: Legion | 30−35
+0%
|
30−35
+0%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 5−6
+0%
|
5−6
+0%
|
| Call of Duty: Modern Warfare | 4−5
+0%
|
4−5
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Far Cry New Dawn | 2−3
+0%
|
2−3
+0%
|
| Forza Horizon 4 | 1−2
+0%
|
1−2
+0%
|
| Hitman 3 | 5−6
+0%
|
5−6
+0%
|
| Horizon Zero Dawn | 12−14
+0%
|
12−14
+0%
|
| Red Dead Redemption 2 | 1−2
+0%
|
1−2
+0%
|
| Shadow of the Tomb Raider | 7−8
+0%
|
7−8
+0%
|
| The Witcher 3: Wild Hunt | 10−12
+0%
|
10−12
+0%
|
| Watch Dogs: Legion | 30−35
+0%
|
30−35
+0%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 5−6
+0%
|
5−6
+0%
|
| Call of Duty: Modern Warfare | 4−5
+0%
|
4−5
+0%
|
| Cyberpunk 2077 | 3−4
+0%
|
3−4
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Forza Horizon 4 | 1−2
+0%
|
1−2
+0%
|
| Hitman 3 | 5−6
+0%
|
5−6
+0%
|
| Horizon Zero Dawn | 12−14
+0%
|
12−14
+0%
|
| Shadow of the Tomb Raider | 7−8
+0%
|
7−8
+0%
|
| The Witcher 3: Wild Hunt | 10−12
+0%
|
10−12
+0%
|
| Watch Dogs: Legion | 30−35
+0%
|
30−35
+0%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 1−2
+0%
|
1−2
+0%
|
1440p
High Preset
| Battlefield 5 | 1−2
+0%
|
1−2
+0%
|
| Far Cry New Dawn | 2−3
+0%
|
2−3
+0%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 1−2
+0%
|
1−2
+0%
|
| Cyberpunk 2077 | 1−2
+0%
|
1−2
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Hitman 3 | 7−8
+0%
|
7−8
+0%
|
| Horizon Zero Dawn | 4−5
+0%
|
4−5
+0%
|
| The Witcher 3: Wild Hunt | 0−1 | 0−1 |
| Watch Dogs: Legion | 5−6
+0%
|
5−6
+0%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 4−5
+0%
|
4−5
+0%
|
4K
High Preset
| Far Cry New Dawn | 0−1 | 0−1 |
4K
Ultra Preset
| Assassin's Creed Odyssey | 1−2
+0%
|
1−2
+0%
|
| Assassin's Creed Valhalla | 0−1 | 0−1 |
| Call of Duty: Modern Warfare | 0−1 | 0−1 |
| Far Cry 5 | 0−1 | 0−1 |
4K
Epic Preset
| Red Dead Redemption 2 | 2−3
+0%
|
2−3
+0%
|
This is how GeForce 840A and GT 620M compete in popular games:
- GeForce 840A is 157% faster in 1080p
All in all, in popular games:
- there's a draw in 46 tests (100%)
Pros & cons summary
| Performance score | 2.97 | 1.12 |
| Recency | 17 March 2014 | 23 August 2012 |
| Maximum RAM amount | 2 GB | 1 GB |
| Chip lithography | 28 nm | 40 nm |
| Power consumption (TDP) | 33 Watt | 15 Watt |
GeForce 840A has a 165.2% higher aggregate performance score, an age advantage of 1 year, a 100% higher maximum VRAM amount, and a 42.9% more advanced lithography process.
GT 620M, on the other hand, has 120% lower power consumption.
The GeForce 840A is our recommended choice as it beats the GeForce GT 620M in performance tests.
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.
