GeForce 840A vs 845M
Aggregate performance score
We've compared GeForce 845M and GeForce 840A, covering specs and all relevant benchmarks.
845M outperforms 840A by a substantial 35% 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 | 762 | 849 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 8.21 | 6.06 |
| Architecture | Maxwell (2014−2017) | Maxwell (2014−2017) |
| GPU code name | GM108 | GM108 |
| Market segment | Laptop | Laptop |
| Release date | 26 August 2015 (10 years ago) | 17 March 2014 (11 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 | 384 |
| Core clock speed | 1071 MHz | 1029 MHz |
| Boost clock speed | 1176 MHz | 1124 MHz |
| Number of transistors | 1,870 million | no data |
| Manufacturing process technology | 28 nm | 28 nm |
| Power consumption (TDP) | 45 Watt | 33 Watt |
| Texture fill rate | 37.63 | 17.98 |
| Floating-point processing power | 0.9032 TFLOPS | 0.8632 TFLOPS |
| ROPs | 16 | 8 |
| TMUs | 32 | 16 |
| L1 Cache | 192 KB | 192 KB |
| L2 Cache | 1024 KB | 1024 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 |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x8 |
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 | GDDR5 | DDR3 |
| Maximum RAM amount | 2 GB | 2 GB |
| Memory bus width | 64 Bit | 64 Bit |
| Memory clock speed | 1253 MHz | 1001 MHz |
| Memory bandwidth | 40.1 GB/s | 16.02 GB/s |
| Shared memory | - | no data |
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 | No outputs |
Supported technologies
Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.
| Optimus | + | - |
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 | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.1.126 |
| CUDA | + | 5.0 |
Synthetic benchmarks
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.
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 | 22
+37.5%
| 16−18
−37.5%
|
FPS performance in popular games
Full HD
Low
| Counter-Strike 2 | 14−16
+40%
|
10−11
−40%
|
| Cyberpunk 2077 | 7−8
+40%
|
5−6
−40%
|
| Hogwarts Legacy | 9−10
+50%
|
6−7
−50%
|
Full HD
Medium
| Battlefield 5 | 14−16
+40%
|
10−11
−40%
|
| Counter-Strike 2 | 14−16
+40%
|
10−11
−40%
|
| Cyberpunk 2077 | 7−8
+40%
|
5−6
−40%
|
| Far Cry 5 | 10−12
+37.5%
|
8−9
−37.5%
|
| Fortnite | 20−22
+42.9%
|
14−16
−42.9%
|
| Forza Horizon 4 | 16−18
+41.7%
|
12−14
−41.7%
|
| Forza Horizon 5 | 9−10
+50%
|
6−7
−50%
|
| Hogwarts Legacy | 9−10
+50%
|
6−7
−50%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 14−16
+50%
|
10−11
−50%
|
| Valorant | 50−55
+45.7%
|
35−40
−45.7%
|
Full HD
High
| Battlefield 5 | 14−16
+40%
|
10−11
−40%
|
| Counter-Strike 2 | 14−16
+40%
|
10−11
−40%
|
| Counter-Strike: Global Offensive | 65−70
+44.4%
|
45−50
−44.4%
|
| Cyberpunk 2077 | 7−8
+40%
|
5−6
−40%
|
| Dota 2 | 30−35
+37.5%
|
24−27
−37.5%
|
| Far Cry 5 | 10−12
+37.5%
|
8−9
−37.5%
|
| Fortnite | 20−22
+42.9%
|
14−16
−42.9%
|
| Forza Horizon 4 | 16−18
+41.7%
|
12−14
−41.7%
|
| Forza Horizon 5 | 9−10
+50%
|
6−7
−50%
|
| Grand Theft Auto V | 10−12
+37.5%
|
8−9
−37.5%
|
| Hogwarts Legacy | 9−10
+50%
|
6−7
−50%
|
| Metro Exodus | 7−8
+40%
|
5−6
−40%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 14−16
+50%
|
10−11
−50%
|
| The Witcher 3: Wild Hunt | 10−12
+37.5%
|
8−9
−37.5%
|
| Valorant | 50−55
+45.7%
|
35−40
−45.7%
|
Full HD
Ultra
| Battlefield 5 | 14−16
+40%
|
10−11
−40%
|
| Cyberpunk 2077 | 7−8
+40%
|
5−6
−40%
|
| Dota 2 | 30−35
+37.5%
|
24−27
−37.5%
|
| Far Cry 5 | 10−12
+37.5%
|
8−9
−37.5%
|
| Forza Horizon 4 | 16−18
+41.7%
|
12−14
−41.7%
|
| Hogwarts Legacy | 9−10
+50%
|
6−7
−50%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 14−16
+50%
|
10−11
−50%
|
| The Witcher 3: Wild Hunt | 10−12
+37.5%
|
8−9
−37.5%
|
| Valorant | 50−55
+45.7%
|
35−40
−45.7%
|
Full HD
Epic
| Fortnite | 20−22
+42.9%
|
14−16
−42.9%
|
1440p
High
| Counter-Strike 2 | 7−8
+40%
|
5−6
−40%
|
| Counter-Strike: Global Offensive | 27−30
+50%
|
18−20
−50%
|
| Grand Theft Auto V | 3−4
+50%
|
2−3
−50%
|
| Metro Exodus | 2−3
+100%
|
1−2
−100%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 27−30
+38.1%
|
21−24
−38.1%
|
| Valorant | 35−40
+37%
|
27−30
−37%
|
1440p
Ultra
| Cyberpunk 2077 | 2−3
+100%
|
1−2
−100%
|
| Far Cry 5 | 6−7
+50%
|
4−5
−50%
|
| Forza Horizon 4 | 9−10
+50%
|
6−7
−50%
|
| Hogwarts Legacy | 4−5
+100%
|
2−3
−100%
|
| The Witcher 3: Wild Hunt | 5−6
+66.7%
|
3−4
−66.7%
|
1440p
Epic
| Fortnite | 7−8
+40%
|
5−6
−40%
|
4K
High
| Grand Theft Auto V | 16−18
+60%
|
10−11
−60%
|
| Valorant | 18−20
+50%
|
12−14
−50%
|
4K
Ultra
| Cyberpunk 2077 | 1−2 | 0−1 |
| Dota 2 | 10−12
+37.5%
|
8−9
−37.5%
|
| Far Cry 5 | 2−3
+100%
|
1−2
−100%
|
| Forza Horizon 4 | 4−5
+100%
|
2−3
−100%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 4−5
+100%
|
2−3
−100%
|
4K
Epic
| Fortnite | 4−5
+100%
|
2−3
−100%
|
This is how GeForce 845M and GeForce 840A compete in popular games:
- GeForce 845M is 38% faster in 1080p
Pros & cons summary
| Performance score | 3.36 | 2.48 |
| Recency | 26 August 2015 | 17 March 2014 |
| Power consumption (TDP) | 45 Watt | 33 Watt |
GeForce 845M has a 35.5% higher aggregate performance score, and an age advantage of 1 year.
GeForce 840A, on the other hand, has 36.4% lower power consumption.
The GeForce 845M is our recommended choice as it beats the GeForce 840A 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.
