Radeon HD 7870 XT vs Radeon R7 M340
If you are going to buy a new graphics card and are choosing between Radeon HD 7870 XT and Radeon R7 M340, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 7870 XT stacks up against Radeon R7 M340, check out specs charts below.
Radeon HD 7870 XT
Radeon R7 M340 is a Laptop Graphics Card
Note: Radeon R7 M340 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 Radeon R7 M340 here:
Main Specs
| Radeon HD 7870 XT | Radeon R7 M340 | |
| Power consumption (TDP) | 185 Watt | |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Supplementary power connectors | 2x 6-pin | None |
| Memory type | GDDR5 | DDR3 |
| Maximum RAM amount | 2 GB | 4 GB |
| Display Connectors | 1x DVI, 1x HDMI, 2x mini-DisplayPort | No outputs |
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- Radeon HD 7870 XT is connected by PCIe 3.0 x16, and Radeon R7 M340 uses PCIe 3.0 x8 interface.
- Radeon R7 M340 has 2 GB more memory, than Radeon HD 7870 XT.
- Radeon HD 7870 XT is used in Desktops, and Radeon R7 M340 - in Laptops.
- Radeon HD 7870 XT is build with GCN 1.0 architecture, and Radeon R7 M340 - with GCN.
- Core clock speed of Radeon R7 M340 is 96 MHz higher, than Radeon HD 7870 XT.
- Radeon HD 7870 XT and Radeon R7 M340 are manufactured by 28 nm process technology.
- Memory clock speed of Radeon HD 7870 XT is 5000 MHz higher, than Radeon R7 M340.
Game benchmarks
| high / 1080p | 35−40 | 0−1 |
| ultra / 1080p | 21−24 | − |
| QHD / 1440p | 16−18 | 0−1 |
| 4K / 2160p | 10−11 | − |
| low / 720p | 60−65 | 1−2 |
| medium / 1080p | 40−45 | 0−1 |
| The average gaming FPS of Radeon HD 7870 XT in Assassin's Creed Odyssey is 6100% more, than Radeon R7 M340. | ||
| high / 1080p | 55−60 | − |
| ultra / 1080p | 45−50 | − |
| QHD / 1440p | 35−40 | 0−1 |
| 4K / 2160p | 18−20 | − |
| low / 720p | 100−110 | 0−1 |
| medium / 1080p | 60−65 | − |
| low / 768p | 50−55 | 50−55 |
| high / 1080p | − | 45−50 |
| QHD / 1440p | 0−1 | 0−1 |
| Radeon HD 7870 XT and Radeon R7 M340 have the same average FPS in Call of Duty: Warzone. | ||
| low / 768p | 250−260 | 60−65 |
| medium / 768p | 220−230 | 27−30 |
| ultra / 1080p | 180−190 | 7−8 |
| QHD / 1440p | 110−120 | − |
| 4K / 2160p | 70−75 | − |
| high / 768p | 210−220 | 16−18 |
| The average gaming FPS of Radeon HD 7870 XT in Counter-Strike: Global Offensive is 685% more, than Radeon R7 M340. | ||
| low / 768p | 60−65 | 70−75 |
| ultra / 1080p | − | 0−1 |
| medium / 1080p | 55−60 | 45−50 |
| Radeon HD 7870 XT and Radeon R7 M340 have the same average FPS in Cyberpunk 2077. | ||
| low / 768p | 120−130 | 45−50 |
| medium / 768p | 110−120 | 10−11 |
| ultra / 1080p | 100−110 | 0−1 |
| The average gaming FPS of Radeon HD 7870 XT in Dota 2 is 313% more, than Radeon R7 M340. | ||
| high / 1080p | 45−50 | − |
| ultra / 1080p | 40−45 | − |
| QHD / 1440p | 27−30 | − |
| 4K / 2160p | 14−16 | − |
| low / 720p | 80−85 | 0−1 |
| medium / 1080p | 45−50 | − |
| high / 1080p | 60−65 | − |
| ultra / 1080p | 45−50 | − |
| QHD / 1440p | 27−30 | − |
| 4K / 2160p | 27−30 | − |
| low / 720p | 180−190 | 21−24 |
| medium / 1080p | 110−120 | 0−1 |
| The average gaming FPS of Radeon HD 7870 XT in Fortnite is 740% more, than Radeon R7 M340. | ||
| high / 1080p | 60−65 | 0−1 |
| ultra / 1080p | 45−50 | − |
| QHD / 1440p | 30−35 | 0−1 |
| 4K / 2160p | 24−27 | − |
| low / 720p | 100−110 | 0−1 |
| medium / 1080p | 65−70 | 0−1 |
| low / 768p | 140−150 | 18−20 |
| medium / 768p | 120−130 | − |
| high / 1080p | 70−75 | 0−1 |
| ultra / 1080p | 30−35 | − |
| QHD / 1440p | 21−24 | 0−1 |
| medium / 720p | − | 12−14 |
| The average gaming FPS of Radeon HD 7870 XT in Grand Theft Auto V is 663% more, than Radeon R7 M340. | ||
| high / 1080p | 24−27 | − |
| ultra / 1080p | 20−22 | − |
| QHD / 1440p | 16−18 | − |
| 4K / 2160p | 8−9 | − |
| low / 720p | 65−70 | 0−1 |
| medium / 1080p | 30−35 | − |
| low / 768p | 130−140 | 75−80 |
| high / 1080p | − | 27−30 |
| medium / 1080p | 120−130 | − |
| The average gaming FPS of Radeon HD 7870 XT in Minecraft is 75% more, than Radeon R7 M340. | ||
| ultra / 1080p | 14−16 | − |
| low / 720p | 100−110 | 8−9 |
| medium / 1080p | 18−20 | − |
| The average gaming FPS of Radeon HD 7870 XT in PLAYERUNKNOWN'S BATTLEGROUNDS is 1212% more, than Radeon R7 M340. | ||
| high / 1080p | 24−27 | − |
| ultra / 1080p | 16−18 | − |
| QHD / 1440p | 10−11 | − |
| 4K / 2160p | 7−8 | − |
| low / 720p | 65−70 | 0−1 |
| medium / 1080p | 35−40 | − |
| low / 768p | 130−140 | 0−1 |
| medium / 768p | 85−90 | − |
| high / 1080p | 45−50 | − |
| ultra / 1080p | 24−27 | − |
| 4K / 2160p | 16−18 | − |
| low / 768p | 90−95 | 45−50 |
| medium / 768p | 60−65 | 14−16 |
| ultra / 1080p | 50−55 | 0−1 |
| high / 768p | 60−65 | 12−14 |
| The average gaming FPS of Radeon HD 7870 XT in World of Tanks is 188% more, than Radeon R7 M340. | ||
Full Specs
| Radeon HD 7870 XT | Radeon R7 M340 | |
| Architecture | GCN 1.0 | GCN |
| Code name | Tahiti | Meso Pro DDR3 |
| Type | Desktop | Laptop |
| Release date | 19 November 2012 | 16 June 2015 |
| Pipelines | 1536 | 320 |
| Core clock speed | 925 MHz | 1021 MHz |
| Boost Clock | 975 MHz | 1021 MHz |
| Transistor count | 4,313 million | 950 million |
| Manufacturing process technology | 28 nm | 28 nm |
| Texture fill rate | 93.60 | 17.16 |
| Floating-point performance | 2,995 gflops | 549.1 gflops |
| Length | 267 mm | |
| Memory bus width | 256 Bit | 128 Bit |
| Memory clock speed | 6000 MHz | 1000 MHz |
| Memory bandwidth | 192.0 GB/s | 16 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_1) | |
| Shader Model | 5.1 | 5.1 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | Not Listed |
| Vulkan | 1.2.131 | + |
| FreeSync | + | |
| Bus support | PCIe 3.0 | |
| Bitcoin / BTC (SHA256) | 346 Mh/s | 74 Mh/s |
| Eyefinity | + | |
| HD3D | + | |
| PowerTune | + | |
| DualGraphics | + | |
| ZeroCore | + | |
| Switchable graphics | + | |
| Mantle | + | |
| Ethereum / ETH (DaggerHashimoto) | 14.5 Mh/s | |
| Compute units | 6 | |
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