Radeon HD 7870 XT vs Radeon RX 640
Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 7870 XT and Radeon RX 640. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 7870 XT and Radeon RX 640. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
Radeon HD 7870 XT
Radeon RX 640 is a Laptop Graphics Card
Note: Radeon RX 640 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 RX 640 here:
Main Specs
| Radeon HD 7870 XT | Radeon RX 640 | |
| Power consumption (TDP) | 185 Watt | 50 Watt |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Supplementary power connectors | 2x 6-pin | None |
| Memory type | GDDR5 | GDDR5 |
| Maximum RAM amount | 2 GB | 4 GB |
| Display Connectors | 1x DVI, 1x HDMI, 2x mini-DisplayPort | 1x DVI, 1x HDMI, 1x DisplayPort |
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- Radeon HD 7870 XT has 270% more power consumption, than Radeon RX 640.
- Radeon HD 7870 XT is connected by PCIe 3.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
- Radeon RX 640 has 2 GB more memory, than Radeon HD 7870 XT.
- Radeon HD 7870 XT is used in Desktops, and Radeon RX 640 - in Laptops.
- Radeon HD 7870 XT is build with GCN 1.0 architecture, and Radeon RX 640 - with Polaris.
- Core clock speed of Radeon RX 640 is 293 MHz higher, than Radeon HD 7870 XT.
- Radeon HD 7870 XT is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
- Memory clock speed of Radeon HD 7870 XT and Radeon RX 640 is 6000 MHz.
Game benchmarks
| high / 1080p | 35−40 | 5−6 |
| ultra / 1080p | 21−24 | 3−4 |
| QHD / 1440p | 16−18 | 2−3 |
| 4K / 2160p | 10−11 | − |
| low / 720p | 60−65 | 16−18 |
| medium / 1080p | 40−45 | 7−8 |
| The average gaming FPS of Radeon HD 7870 XT in Assassin's Creed Odyssey is 414% more, than Radeon RX 640. | ||
| high / 1080p | 55−60 | 10−12 |
| ultra / 1080p | 45−50 | 8−9 |
| QHD / 1440p | 35−40 | 0−1 |
| 4K / 2160p | 18−20 | − |
| low / 720p | 100−110 | 24−27 |
| medium / 1080p | 60−65 | 10−12 |
| The average gaming FPS of Radeon HD 7870 XT in Battlefield 5 is 385% more, than Radeon RX 640. | ||
| low / 768p | 50−55 | 45−50 |
| 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 Radeon RX 640. | ||
| low / 768p | 250−260 | 130−140 |
| medium / 768p | 220−230 | 100−110 |
| ultra / 1080p | 180−190 | 50−55 |
| QHD / 1440p | 110−120 | 27−30 |
| 4K / 2160p | 70−75 | 12−14 |
| high / 768p | 210−220 | 80−85 |
| The average gaming FPS of Radeon HD 7870 XT in Counter-Strike: Global Offensive is 156% more, than Radeon RX 640. | ||
| low / 768p | 60−65 | 50−55 |
| ultra / 1080p | − | 18−20 |
| medium / 1080p | 55−60 | 45−50 |
| The average gaming FPS of Radeon HD 7870 XT in Cyberpunk 2077 is 20% more, than Radeon RX 640. | ||
| low / 768p | 120−130 | 80−85 |
| medium / 768p | 110−120 | 55−60 |
| ultra / 1080p | 100−110 | 30−35 |
| The average gaming FPS of Radeon HD 7870 XT in Dota 2 is 101% more, than Radeon RX 640. | ||
| high / 1080p | 45−50 | 7−8 |
| ultra / 1080p | 40−45 | 5−6 |
| QHD / 1440p | 27−30 | − |
| 4K / 2160p | 14−16 | 5−6 |
| low / 720p | 80−85 | 18−20 |
| medium / 1080p | 45−50 | 8−9 |
| The average gaming FPS of Radeon HD 7870 XT in Far Cry 5 is 422% more, than Radeon RX 640. | ||
| high / 1080p | 60−65 | 7−8 |
| ultra / 1080p | 45−50 | 0−1 |
| QHD / 1440p | 27−30 | 0−1 |
| 4K / 2160p | 27−30 | − |
| low / 720p | 180−190 | 60−65 |
| medium / 1080p | 110−120 | 18−20 |
| The average gaming FPS of Radeon HD 7870 XT in Fortnite is 313% more, than Radeon RX 640. | ||
| high / 1080p | 60−65 | 10−11 |
| ultra / 1080p | 45−50 | − |
| QHD / 1440p | 30−35 | − |
| 4K / 2160p | 24−27 | 8−9 |
| low / 720p | 100−110 | 24−27 |
| medium / 1080p | 65−70 | 12−14 |
| The average gaming FPS of Radeon HD 7870 XT in Forza Horizon 4 is 364% more, than Radeon RX 640. | ||
| low / 768p | 140−150 | 50−55 |
| medium / 768p | 120−130 | − |
| high / 1080p | 70−75 | 10−12 |
| ultra / 1080p | 30−35 | 5−6 |
| QHD / 1440p | 21−24 | − |
| medium / 720p | − | 45−50 |
| The average gaming FPS of Radeon HD 7870 XT in Grand Theft Auto V is 260% more, than Radeon RX 640. | ||
| high / 1080p | 24−27 | 3−4 |
| ultra / 1080p | 20−22 | 1−2 |
| QHD / 1440p | 16−18 | − |
| 4K / 2160p | 8−9 | − |
| low / 720p | 65−70 | 10−11 |
| medium / 1080p | 30−35 | 5−6 |
| The average gaming FPS of Radeon HD 7870 XT in Metro Exodus is 620% more, than Radeon RX 640. | ||
| low / 768p | 130−140 | 90−95 |
| ultra / 1080p | − | 80−85 |
| medium / 1080p | 120−130 | − |
| The average gaming FPS of Radeon HD 7870 XT in Minecraft is 46% more, than Radeon RX 640. | ||
| high / 1080p | − | 6−7 |
| ultra / 1080p | 14−16 | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 100−110 | 27−30 |
| medium / 1080p | 18−20 | 10−11 |
| The average gaming FPS of Radeon HD 7870 XT in PLAYERUNKNOWN'S BATTLEGROUNDS is 253% more, than Radeon RX 640. | ||
| high / 1080p | 24−27 | − |
| ultra / 1080p | 16−18 | − |
| QHD / 1440p | 10−11 | − |
| 4K / 2160p | 7−8 | − |
| low / 720p | 65−70 | 10−12 |
| medium / 1080p | 35−40 | 9−10 |
| The average gaming FPS of Radeon HD 7870 XT in Red Dead Redemption 2 is 420% more, than Radeon RX 640. | ||
| low / 768p | 130−140 | 21−24 |
| medium / 768p | 85−90 | 14−16 |
| high / 1080p | 45−50 | 6−7 |
| ultra / 1080p | 24−27 | 4−5 |
| 4K / 2160p | 16−18 | 3−4 |
| The average gaming FPS of Radeon HD 7870 XT in The Witcher 3: Wild Hunt is 520% more, than Radeon RX 640. | ||
| low / 768p | 90−95 | 75−80 |
| medium / 768p | 60−65 | 40−45 |
| ultra / 1080p | 50−55 | 18−20 |
| high / 768p | 60−65 | 35−40 |
| The average gaming FPS of Radeon HD 7870 XT in World of Tanks is 52% more, than Radeon RX 640. | ||
Full Specs
| Radeon HD 7870 XT | Radeon RX 640 | |
| Architecture | GCN 1.0 | Polaris |
| Code name | Tahiti | Polaris 12 |
| Type | Desktop | Laptop |
| Release date | 19 November 2012 | 12 August 2019 |
| Pipelines | 1536 | 640 |
| Core clock speed | 925 MHz | 1218 MHz |
| Boost Clock | 975 MHz | 1218 MHz |
| Transistor count | 4,313 million | 2,200 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Texture fill rate | 93.60 | 38.98 |
| Floating-point performance | 2,995 gflops | |
| Length | 267 mm | |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 6000 MHz | 6000 MHz |
| Memory bandwidth | 192.0 GB/s | 112.0 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_1) | 12 (12_0) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.2.131 | 1.2.131 |
| FreeSync | + | |
| Bitcoin / BTC (SHA256) | 346 Mh/s | |
| Laptop size | large | |
| Ethereum / ETH (DaggerHashimoto) | 14.5 Mh/s | |
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