Radeon HD 6620G vs GeForce 840M
Aggregate performance score
We've compared GeForce 840M and Radeon HD 6620G, covering specs and all relevant benchmarks.
840M outperforms HD 6620G by a whopping 222% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 808 | 1141 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 5.87 | 1.72 |
| Architecture | Maxwell (2014−2017) | TeraScale 2 (2009−2015) |
| GPU code name | GM108 | Sumo |
| Market segment | Laptop | Laptop |
| Release date | 12 March 2014 (10 years ago) | 7 December 2011 (13 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 | 400 |
| Core clock speed | 1029 MHz | 444 MHz |
| Boost clock speed | 1124 MHz | no data |
| Number of transistors | no data | 1,178 million |
| Manufacturing process technology | 28 nm | 32 nm |
| Power consumption (TDP) | 33 Watt | 35 Watt |
| Texture fill rate | 17.98 | 8.880 |
| Floating-point processing power | 0.8632 TFLOPS | 0.3552 TFLOPS |
| ROPs | 8 | 8 |
| TMUs | 16 | 20 |
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 | medium sized |
| Bus support | PCI Express 2.0, PCI Express 3.0 | no data |
| Interface | PCIe 3.0 x8 | IGP |
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 | System Shared |
| Maximum RAM amount | 4 GB | System Shared |
| Memory bus width | 64 Bit | System Shared |
| Memory clock speed | 1001 MHz | System Shared |
| Memory bandwidth | 16.02 GB/s | no data |
| 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 Connectors | No outputs | No outputs |
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 compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.5 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | N/A |
| 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.
- Other tests
- Passmark
- 3DMark 11 Performance GPU
- 3DMark Vantage Performance
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 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.
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.
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:
| 900p | 45
+275%
| 12−14
−275%
|
| Full HD | 18
+38.5%
| 13
−38.5%
|
FPS performance in popular games
- Full HD
Low Preset - Full HD
Medium Preset - Full HD
High Preset - Full HD
Ultra Preset - Full HD
Epic Preset - 1440p
High Preset - 1440p
Ultra Preset - 1440p
Epic Preset - 4K
High Preset - 4K
Ultra Preset - 4K
Epic Preset
| Atomic Heart | 7−8
+133%
|
3−4
−133%
|
| Counter-Strike 2 | 7−8
+250%
|
2−3
−250%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Atomic Heart | 7−8
+133%
|
3−4
−133%
|
| Battlefield 5 | 9−10
+350%
|
2−3
−350%
|
| Counter-Strike 2 | 7−8
+250%
|
2−3
−250%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Far Cry 5 | 5−6
+400%
|
1−2
−400%
|
| Fortnite | 12−14
+225%
|
4−5
−225%
|
| Forza Horizon 4 | 12−14
+160%
|
5−6
−160%
|
| Forza Horizon 5 | 4−5
+300%
|
1−2
−300%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 12−14
+62.5%
|
8−9
−62.5%
|
| Valorant | 40−45
+46.7%
|
30−33
−46.7%
|
| Atomic Heart | 7−8
+133%
|
3−4
−133%
|
| Battlefield 5 | 9−10
+350%
|
2−3
−350%
|
| Counter-Strike 2 | 7−8
+250%
|
2−3
−250%
|
| Counter-Strike: Global Offensive | 46
+109%
|
21−24
−109%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Dota 2 | 27−30
+108%
|
12−14
−108%
|
| Far Cry 5 | 5−6
+400%
|
1−2
−400%
|
| Fortnite | 12−14
+225%
|
4−5
−225%
|
| Forza Horizon 4 | 12−14
+160%
|
5−6
−160%
|
| Forza Horizon 5 | 4−5
+300%
|
1−2
−300%
|
| Grand Theft Auto V | 7−8
+250%
|
2−3
−250%
|
| Metro Exodus | 5−6
+400%
|
1−2
−400%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 12−14
+62.5%
|
8−9
−62.5%
|
| The Witcher 3: Wild Hunt | 9
+80%
|
5−6
−80%
|
| Valorant | 40−45
+46.7%
|
30−33
−46.7%
|
| Battlefield 5 | 9−10
+350%
|
2−3
−350%
|
| Cyberpunk 2077 | 6−7
+200%
|
2−3
−200%
|
| Dota 2 | 27−30
+108%
|
12−14
−108%
|
| Far Cry 5 | 5−6
+400%
|
1−2
−400%
|
| Forza Horizon 4 | 12−14
+160%
|
5−6
−160%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 12−14
+62.5%
|
8−9
−62.5%
|
| The Witcher 3: Wild Hunt | 6
+20%
|
5−6
−20%
|
| Valorant | 40−45
+46.7%
|
30−33
−46.7%
|
| Fortnite | 12−14
+225%
|
4−5
−225%
|
| Counter-Strike 2 | 3−4 | 0−1 |
| Counter-Strike: Global Offensive | 18−20
+375%
|
4−5
−375%
|
| Grand Theft Auto V | 1−2 | 0−1 |
| Metro Exodus | 0−1 | 0−1 |
| PLAYERUNKNOWN'S BATTLEGROUNDS | 21−24
+188%
|
8−9
−188%
|
| Valorant | 24−27
+243%
|
7−8
−243%
|
| Cyberpunk 2077 | 2−3 | 0−1 |
| Far Cry 5 | 4−5
+300%
|
1−2
−300%
|
| Forza Horizon 4 | 6−7
+200%
|
2−3
−200%
|
| The Witcher 3: Wild Hunt | 4−5
+300%
|
1−2
−300%
|
| Fortnite | 5−6
+400%
|
1−2
−400%
|
| Atomic Heart | 2−3 | 0−1 |
| Grand Theft Auto V | 16−18
+6.7%
|
14−16
−6.7%
|
| Valorant | 12−14
+160%
|
5−6
−160%
|
| Cyberpunk 2077 | 1−2 | 0−1 |
| Dota 2 | 7−8
+250%
|
2−3
−250%
|
| Far Cry 5 | 3−4
+200%
|
1−2
−200%
|
| Forza Horizon 4 | 2−3 | 0−1 |
| PLAYERUNKNOWN'S BATTLEGROUNDS | 3−4
+50%
|
2−3
−50%
|
| Fortnite | 3−4
+50%
|
2−3
−50%
|
This is how GeForce 840M and HD 6620G compete in popular games:
- GeForce 840M is 275% faster in 900p
- GeForce 840M is 38% faster in 1080p
Here's the range of performance differences observed across popular games:
- in Metro Exodus, with 1080p resolution and the High Preset, the GeForce 840M is 400% faster.
All in all, in popular games:
- Without exception, GeForce 840M surpassed HD 6620G in all 32 of our tests.
Pros & cons summary
| Performance score | 2.45 | 0.76 |
| Recency | 12 March 2014 | 7 December 2011 |
| Chip lithography | 28 nm | 32 nm |
| Power consumption (TDP) | 33 Watt | 35 Watt |
GeForce 840M has a 222.4% higher aggregate performance score, an age advantage of 2 years, a 14.3% more advanced lithography process, and 6.1% lower power consumption.
The GeForce 840M is our recommended choice as it beats the Radeon HD 6620G in performance tests.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
