GeForce 840M vs Radeon HD 7870 XT
When choosing between GeForce 840M and Radeon HD 7870 XT, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce 840M and Radeon HD 7870 XT.
Radeon HD 7870 XT
GeForce 840M is a Laptop Graphics Card
Note: GeForce 840M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce 840M here:
Main Specs
| GeForce 840M | Radeon HD 7870 XT | |
| Power consumption (TDP) | 33 Watt | 185 Watt |
| Interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
| Supplementary power connectors | 2x 6-pin | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 4 GB | 2 GB |
| Display Connectors | No outputs | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
| Check Price |
- Radeon HD 7870 XT has 460% more power consumption, than GeForce 840M.
- GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 7870 XT uses PCIe 3.0 x16 interface.
- GeForce 840M has 2 GB more memory, than Radeon HD 7870 XT.
- GeForce 840M is used in Laptops, and Radeon HD 7870 XT - in Desktops.
- GeForce 840M is build with Maxwell architecture, and Radeon HD 7870 XT - with GCN 1.0.
- Core clock speed of GeForce 840M is 104 MHz higher, than Radeon HD 7870 XT.
- GeForce 840M and Radeon HD 7870 XT are manufactured by 28 nm process technology.
- Memory clock speed of Radeon HD 7870 XT is 4000 MHz higher, than GeForce 840M.
Game benchmarks
| high / 1080p | 1−2 | 35−40 |
| ultra / 1080p | 0−1 | 21−24 |
| QHD / 1440p | 0−1 | 16−18 |
| 4K / 2160p | − | 10−11 |
| low / 720p | 12−14 | 60−65 |
| medium / 1080p | 3−4 | 40−45 |
| The average gaming FPS of Radeon HD 7870 XT in Assassin's Creed Odyssey is 683% more, than GeForce 840M. | ||
| high / 1080p | − | 55−60 |
| ultra / 1080p | 4−5 | 45−50 |
| QHD / 1440p | 0−1 | 35−40 |
| 4K / 2160p | − | 18−20 |
| low / 720p | 16−18 | 100−110 |
| medium / 1080p | 5−6 | 60−65 |
| The average gaming FPS of Radeon HD 7870 XT in Battlefield 5 is 688% more, than GeForce 840M. | ||
| low / 768p | 45−50 | 50−55 |
| high / 1080p | 40−45 | − |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of Radeon HD 7870 XT in Call of Duty: Warzone is 10% more, than GeForce 840M. | ||
| low / 768p | 120−130 | 250−260 |
| medium / 768p | 90−95 | 220−230 |
| ultra / 1080p | 40−45 | 180−190 |
| QHD / 1440p | 24−27 | 110−120 |
| 4K / 2160p | 18−20 | 70−75 |
| high / 768p | 65−70 | 210−220 |
| The average gaming FPS of Radeon HD 7870 XT in Counter-Strike: Global Offensive is 185% more, than GeForce 840M. | ||
| low / 768p | 85−90 | 60−65 |
| ultra / 1080p | 16−18 | − |
| medium / 1080p | 40−45 | 55−60 |
| The average gaming FPS of GeForce 840M in Cyberpunk 2077 is 8% more, than Radeon HD 7870 XT. | ||
| low / 768p | 75−80 | 120−130 |
| medium / 768p | 50−55 | 110−120 |
| ultra / 1080p | 24−27 | 100−110 |
| The average gaming FPS of Radeon HD 7870 XT in Dota 2 is 125% more, than GeForce 840M. | ||
| high / 1080p | 2−3 | 45−50 |
| ultra / 1080p | 2−3 | 40−45 |
| QHD / 1440p | − | 27−30 |
| 4K / 2160p | 0−1 | 14−16 |
| low / 720p | 12−14 | 80−85 |
| medium / 1080p | 3−4 | 45−50 |
| The average gaming FPS of Radeon HD 7870 XT in Far Cry 5 is 1000% more, than GeForce 840M. | ||
| high / 1080p | 10−11 | 60−65 |
| ultra / 1080p | 5−6 | 45−50 |
| QHD / 1440p | 2−3 | 27−30 |
| 4K / 2160p | − | 27−30 |
| low / 720p | 50−55 | 180−190 |
| medium / 1080p | 10−12 | 110−120 |
| The average gaming FPS of Radeon HD 7870 XT in Fortnite is 443% more, than GeForce 840M. | ||
| high / 1080p | 4−5 | 60−65 |
| ultra / 1080p | − | 45−50 |
| QHD / 1440p | 0−1 | 30−35 |
| 4K / 2160p | − | 24−27 |
| low / 720p | 16−18 | 100−110 |
| medium / 1080p | 7−8 | 65−70 |
| The average gaming FPS of Radeon HD 7870 XT in Forza Horizon 4 is 766% more, than GeForce 840M. | ||
| low / 768p | 45−50 | 140−150 |
| medium / 768p | − | 120−130 |
| high / 1080p | 5−6 | 70−75 |
| ultra / 1080p | 2−3 | 30−35 |
| QHD / 1440p | 0−1 | 21−24 |
| medium / 720p | 35−40 | − |
| The average gaming FPS of Radeon HD 7870 XT in Grand Theft Auto V is 361% more, than GeForce 840M. | ||
| high / 1080p | 1−2 | 24−27 |
| ultra / 1080p | 0−1 | 20−22 |
| QHD / 1440p | − | 16−18 |
| 4K / 2160p | 0−1 | 8−9 |
| low / 720p | 5−6 | 65−70 |
| medium / 1080p | 3−4 | 30−35 |
| The average gaming FPS of Radeon HD 7870 XT in Metro Exodus is 1266% more, than GeForce 840M. | ||
| low / 768p | 90−95 | 130−140 |
| high / 1080p | 85−90 | − |
| ultra / 1080p | 70−75 | − |
| medium / 1080p | 90−95 | 120−130 |
| The average gaming FPS of Radeon HD 7870 XT in Minecraft is 41% more, than GeForce 840M. | ||
| ultra / 1080p | 12−14 | 14−16 |
| low / 720p | 27−30 | 100−110 |
| medium / 1080p | 14−16 | 18−20 |
| The average gaming FPS of Radeon HD 7870 XT in PLAYERUNKNOWN'S BATTLEGROUNDS is 155% more, than GeForce 840M. | ||
| high / 1080p | − | 24−27 |
| ultra / 1080p | 4−5 | 16−18 |
| QHD / 1440p | 0−1 | 10−11 |
| 4K / 2160p | − | 7−8 |
| low / 720p | 6−7 | 65−70 |
| medium / 1080p | − | 35−40 |
| The average gaming FPS of Radeon HD 7870 XT in Red Dead Redemption 2 is 740% more, than GeForce 840M. | ||
| low / 768p | 12−14 | 130−140 |
| medium / 768p | 9−10 | 85−90 |
| high / 1080p | 4−5 | 45−50 |
| ultra / 1080p | 3−4 | 24−27 |
| 4K / 2160p | 0−1 | 16−18 |
| The average gaming FPS of Radeon HD 7870 XT in The Witcher 3: Wild Hunt is 942% more, than GeForce 840M. | ||
| low / 768p | 75−80 | 90−95 |
| medium / 768p | 35−40 | 60−65 |
| ultra / 1080p | 16−18 | 50−55 |
| high / 768p | 30−35 | 60−65 |
| The average gaming FPS of Radeon HD 7870 XT in World of Tanks is 63% more, than GeForce 840M. | ||
Full Specs
| GeForce 840M | Radeon HD 7870 XT | |
| Architecture | Maxwell | GCN 1.0 |
| Code name | N15S-GT | Tahiti |
| Type | Laptop | Desktop |
| Release date | 12 March 2014 | 19 November 2012 |
| Pipelines | 384 | 1536 |
| Core clock speed | 1029 MHz | 925 MHz |
| Boost Clock | 1124 MHz | 975 MHz |
| Transistor count | 4,313 million | |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 17.98 | 93.60 |
| Floating-point performance | 863.2 gflops | 2,995 gflops |
| Length | 267 mm | |
| Memory bus width | 64 Bit | 256 Bit |
| Memory clock speed | 2000 MHz | 6000 MHz |
| Memory bandwidth | 16.02 GB/s | 192.0 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 (11_1) |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.5 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | + | |
| Bus support | PCI Express 2.0, PCI Express 3.0 | |
| Bitcoin / BTC (SHA256) | 92 Mh/s | 346 Mh/s |
| Laptop size | medium sized | |
| Optimus | + | |
| Ethereum / ETH (DaggerHashimoto) | 14.5 Mh/s | |
| GPU Boost | 2.0 | |
| GameWorks | + | |
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