GeForce GT 640M vs Radeon HD 6850 X2
When comparing GeForce GT 640M and Radeon HD 6850 X2, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 640M and Radeon HD 6850 X2 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
Radeon HD 6850 X2
GeForce GT 640M is a Laptop Graphics Card
Note: GeForce GT 640M 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 GT 640M here:
Main Specs
| GeForce GT 640M | Radeon HD 6850 X2 | |
| Power consumption (TDP) | 32 Watt | 254 Watt |
| Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Supplementary power connectors | 2x 8-pin | |
| Memory type | DDR3\GDDR5 | GDDR5 |
| Maximum RAM amount | 2 GB | 2 GB |
| Display Connectors | No outputs | 2x DVI, 1x HDMI, 1x DisplayPort |
| Check Price |
- Radeon HD 6850 X2 has 693% more power consumption, than GeForce GT 640M.
- GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon HD 6850 X2 uses PCIe 2.0 x16 interface.
- GeForce GT 640M and Radeon HD 6850 X2 have maximum RAM of 2 GB.
- GeForce GT 640M is used in Laptops, and Radeon HD 6850 X2 - in Desktops.
- GeForce GT 640M is build with Kepler architecture, and Radeon HD 6850 X2 - with TeraScale 2.
- GeForce GT 640M is manufactured by 28 nm process technology, and Radeon HD 6850 X2 - by 40 nm process technology.
- Memory clock speed of Radeon HD 6850 X2 is 2400 MHz higher, than GeForce GT 640M.
Game benchmarks
| high / 1080p | 0−1 | 12−14 |
| ultra / 1080p | 0−1 | 7−8 |
| QHD / 1440p | 0−1 | 2−3 |
| low / 720p | 10−12 | 27−30 |
| medium / 1080p | 2−3 | 16−18 |
| The average gaming FPS of Radeon HD 6850 X2 in Assassin's Creed Odyssey is 266% more, than GeForce GT 640M. | ||
| high / 1080p | − | 21−24 |
| ultra / 1080p | 3−4 | 18−20 |
| QHD / 1440p | 0−1 | 4−5 |
| low / 720p | 12−14 | 45−50 |
| medium / 1080p | 4−5 | 21−24 |
| The average gaming FPS of Radeon HD 6850 X2 in Battlefield 5 is 314% more, than GeForce GT 640M. | ||
| low / 768p | 50−55 | 45−50 |
| high / 1080p | 45−50 | − |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce GT 640M in Call of Duty: Warzone is 10% more, than Radeon HD 6850 X2. | ||
| low / 768p | 110−120 | 190−200 |
| medium / 768p | 85−90 | 160−170 |
| ultra / 1080p | 35−40 | 85−90 |
| QHD / 1440p | − | 45−50 |
| 4K / 2160p | 10−11 | 30−33 |
| high / 768p | 55−60 | 120−130 |
| The average gaming FPS of Radeon HD 6850 X2 in Counter-Strike: Global Offensive is 96% more, than GeForce GT 640M. | ||
| low / 768p | 70−75 | 55−60 |
| ultra / 1080p | 12−14 | 35−40 |
| medium / 1080p | 45−50 | 45−50 |
| The average gaming FPS of Radeon HD 6850 X2 in Cyberpunk 2077 is 6% more, than GeForce GT 640M. | ||
| low / 768p | 70−75 | 100−110 |
| medium / 768p | 40−45 | 85−90 |
| ultra / 1080p | 18−20 | 55−60 |
| The average gaming FPS of Radeon HD 6850 X2 in Dota 2 is 88% more, than GeForce GT 640M. | ||
| high / 1080p | 2−3 | 14−16 |
| ultra / 1080p | 2−3 | 14−16 |
| 4K / 2160p | 0−1 | 5−6 |
| low / 720p | 9−10 | 30−35 |
| medium / 1080p | 3−4 | 16−18 |
| The average gaming FPS of Radeon HD 6850 X2 in Far Cry 5 is 375% more, than GeForce GT 640M. | ||
| high / 1080p | − | 21−24 |
| ultra / 1080p | 5−6 | 16−18 |
| QHD / 1440p | 1−2 | 16−18 |
| low / 720p | 45−50 | 85−90 |
| medium / 1080p | 7−8 | 45−50 |
| The average gaming FPS of Radeon HD 6850 X2 in Fortnite is 180% more, than GeForce GT 640M. | ||
| high / 1080p | 2−3 | 21−24 |
| ultra / 1080p | − | 16−18 |
| QHD / 1440p | 0−1 | 7−8 |
| low / 720p | 14−16 | 45−50 |
| medium / 1080p | 5−6 | 24−27 |
| The average gaming FPS of Radeon HD 6850 X2 in Forza Horizon 4 is 342% more, than GeForce GT 640M. | ||
| low / 768p | 40−45 | 75−80 |
| medium / 768p | − | 65−70 |
| high / 1080p | 3−4 | 24−27 |
| ultra / 1080p | 2−3 | 10−11 |
| QHD / 1440p | 0−1 | 1−2 |
| medium / 720p | 30−35 | − |
| The average gaming FPS of Radeon HD 6850 X2 in Grand Theft Auto V is 131% more, than GeForce GT 640M. | ||
| high / 1080p | 1−2 | 8−9 |
| ultra / 1080p | 0−1 | 6−7 |
| 4K / 2160p | 0−1 | 2−3 |
| low / 720p | 2−3 | 24−27 |
| medium / 1080p | 2−3 | 10−12 |
| The average gaming FPS of Radeon HD 6850 X2 in Metro Exodus is 650% more, than GeForce GT 640M. | ||
| low / 768p | 85−90 | 100−110 |
| high / 1080p | 55−60 | − |
| ultra / 1080p | − | 95−100 |
| medium / 1080p | − | 100−110 |
| The average gaming FPS of Radeon HD 6850 X2 in Minecraft is 20% more, than GeForce GT 640M. | ||
| high / 1080p | 14−16 | 21−24 |
| ultra / 1080p | 12−14 | 16−18 |
| low / 720p | 24−27 | 50−55 |
| medium / 1080p | 14−16 | 21−24 |
| The average gaming FPS of Radeon HD 6850 X2 in PLAYERUNKNOWN'S BATTLEGROUNDS is 64% more, than GeForce GT 640M. | ||
| high / 1080p | − | 12−14 |
| ultra / 1080p | 3−4 | 9−10 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 3−4 | 24−27 |
| medium / 1080p | − | 14−16 |
| The average gaming FPS of Radeon HD 6850 X2 in Red Dead Redemption 2 is 466% more, than GeForce GT 640M. | ||
| low / 768p | 7−8 | 45−50 |
| medium / 768p | 6−7 | 27−30 |
| high / 1080p | 3−4 | 16−18 |
| ultra / 1080p | − | 9−10 |
| 4K / 2160p | 0−1 | 7−8 |
| The average gaming FPS of Radeon HD 6850 X2 in The Witcher 3: Wild Hunt is 520% more, than GeForce GT 640M. | ||
| low / 768p | 70−75 | 95−100 |
| medium / 768p | 35−40 | 55−60 |
| ultra / 1080p | 12−14 | 30−35 |
| high / 768p | 27−30 | 50−55 |
| The average gaming FPS of Radeon HD 6850 X2 in World of Tanks is 62% more, than GeForce GT 640M. | ||
Full Specs
| GeForce GT 640M | Radeon HD 6850 X2 | |
| Architecture | Kepler | TeraScale 2 |
| Code name | N13P-GS | Barts |
| Type | Laptop | Desktop |
| Release date | 22 March 2012 | 19 September 2011 |
| Pipelines | 384 | 960 |
| Core clock speed | 800 MHz | |
| Boost Clock | 645 MHz | |
| Transistor count | 1,270 million | 1,700 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Texture fill rate | 38.40 | |
| Floating-point performance | 480.0 gflops | 2x 1,536.0 gflops |
| Memory bus width | 128bit | 256 Bit |
| Memory clock speed | 1800 - 4000 MHz | 4200 MHz |
| Memory bandwidth | 134.4 GB/s | |
| Shared memory | - | |
| DirectX | 12 API | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.5 | 4.4 |
| OpenCL | 1.1 | 1.2 |
| Vulkan | 1.1.126 | N/A |
| CUDA | + | |
| CUDA cores | 384 | |
| Bus support | PCI Express 2.0, PCI Express 3.0 | |
| HDMI | + | |
| HDCP | + | |
| Maximum VGA resolution | Up to 2048x1536 | |
| 3D Blu-Ray | + | |
| Bitcoin / BTC (SHA256) | 18 Mh/s | |
| Laptop size | medium sized | |
| Optimus | + | |
| Check Price |