GeForce GT 640M vs Radeon HD 4850 X2
If you are going to buy a new graphics card and are choosing between GeForce GT 640M and Radeon HD 4850 X2, 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 GeForce GT 640M stacks up against Radeon HD 4850 X2, check out specs charts below.
Radeon HD 4850 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 4850 X2 | |
| Power consumption (TDP) | 32 Watt | 250 Watt |
| Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Supplementary power connectors | 1x 6-pin + 1x 8-pin | |
| Memory type | DDR3\GDDR5 | GDDR3 |
| Maximum RAM amount | 2 GB | 512 MB |
| Display Connectors | No outputs | 4x DVI, 1x S-Video |
| Check Price |
- Radeon HD 4850 X2 has 681% more power consumption, than GeForce GT 640M.
- GeForce GT 640M is connected by PCIe 3.0 x16, and Radeon HD 4850 X2 uses PCIe 2.0 x16 interface.
- Radeon HD 4850 X2 has 510 GB more memory, than GeForce GT 640M.
- GeForce GT 640M is used in Laptops, and Radeon HD 4850 X2 - in Desktops.
- GeForce GT 640M is build with Kepler architecture, and Radeon HD 4850 X2 - with TeraScale.
- GeForce GT 640M is manufactured by 28 nm process technology, and Radeon HD 4850 X2 - by 55 nm process technology.
- Memory clock speed of Radeon HD 4850 X2 is 190 MHz higher, than GeForce GT 640M.
Game benchmarks
| high / 1080p | 0−1 | 3−4 |
| ultra / 1080p | 0−1 | 2−3 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 10−12 | 14−16 |
| medium / 1080p | 2−3 | 5−6 |
| The average gaming FPS of Radeon HD 4850 X2 in Assassin's Creed Odyssey is 66% more, than GeForce GT 640M. | ||
| ultra / 1080p | 3−4 | 7−8 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 12−14 | 18−20 |
| medium / 1080p | 4−5 | 8−9 |
| The average gaming FPS of Radeon HD 4850 X2 in Battlefield 5 is 57% more, than GeForce GT 640M. | ||
| low / 768p | 50−55 | 45−50 |
| high / 1080p | 45−50 | 30−35 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce GT 640M in Call of Duty: Warzone is 25% more, than Radeon HD 4850 X2. | ||
| low / 768p | 110−120 | 120−130 |
| medium / 768p | 85−90 | 90−95 |
| ultra / 1080p | 35−40 | 40−45 |
| QHD / 1440p | − | 24−27 |
| 4K / 2160p | 10−11 | 18−20 |
| high / 768p | 55−60 | 65−70 |
| The average gaming FPS of Radeon HD 4850 X2 in Counter-Strike: Global Offensive is 13% more, than GeForce GT 640M. | ||
| low / 768p | 70−75 | 80−85 |
| ultra / 1080p | 12−14 | 14−16 |
| medium / 1080p | 45−50 | 40−45 |
| The average gaming FPS of Radeon HD 4850 X2 in Cyberpunk 2077 is 4% more, than GeForce GT 640M. | ||
| low / 768p | 70−75 | 75−80 |
| medium / 768p | 40−45 | 50−55 |
| ultra / 1080p | 18−20 | 27−30 |
| The average gaming FPS of Radeon HD 4850 X2 in Dota 2 is 18% more, than GeForce GT 640M. | ||
| high / 1080p | 2−3 | 5−6 |
| ultra / 1080p | 2−3 | − |
| 4K / 2160p | 0−1 | 2−3 |
| low / 720p | 9−10 | 14−16 |
| medium / 1080p | 3−4 | 6−7 |
| The average gaming FPS of Radeon HD 4850 X2 in Far Cry 5 is 80% more, than GeForce GT 640M. | ||
| high / 1080p | − | 12−14 |
| ultra / 1080p | 5−6 | 7−8 |
| QHD / 1440p | 1−2 | − |
| low / 720p | 45−50 | 50−55 |
| medium / 1080p | 7−8 | 14−16 |
| The average gaming FPS of Radeon HD 4850 X2 in Fortnite is 25% more, than GeForce GT 640M. | ||
| high / 1080p | 2−3 | 7−8 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 14−16 | 20−22 |
| medium / 1080p | 5−6 | 9−10 |
| The average gaming FPS of Radeon HD 4850 X2 in Forza Horizon 4 is 71% more, than GeForce GT 640M. | ||
| low / 768p | 40−45 | 45−50 |
| high / 1080p | 3−4 | 8−9 |
| ultra / 1080p | 2−3 | 5−6 |
| QHD / 1440p | 0−1 | 0−1 |
| medium / 720p | 30−35 | 40−45 |
| The average gaming FPS of Radeon HD 4850 X2 in Grand Theft Auto V is 30% more, than GeForce GT 640M. | ||
| high / 1080p | 1−2 | 3−4 |
| ultra / 1080p | 0−1 | 1−2 |
| 4K / 2160p | 0−1 | 0−1 |
| low / 720p | 2−3 | 8−9 |
| medium / 1080p | 2−3 | 4−5 |
| The average gaming FPS of Radeon HD 4850 X2 in Metro Exodus is 150% more, than GeForce GT 640M. | ||
| low / 768p | 85−90 | 85−90 |
| high / 1080p | 55−60 | 85−90 |
| ultra / 1080p | − | 80−85 |
| medium / 1080p | − | 85−90 |
| The average gaming FPS of Radeon HD 4850 X2 in Minecraft is 20% more, than GeForce GT 640M. | ||
| high / 1080p | 14−16 | − |
| ultra / 1080p | 12−14 | 12−14 |
| low / 720p | 24−27 | 27−30 |
| medium / 1080p | 14−16 | 14−16 |
| The average gaming FPS of Radeon HD 4850 X2 in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than GeForce GT 640M. | ||
| ultra / 1080p | 3−4 | 7−8 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 3−4 | 8−9 |
| The average gaming FPS of Radeon HD 4850 X2 in Red Dead Redemption 2 is 166% more, than GeForce GT 640M. | ||
| low / 768p | 7−8 | 16−18 |
| medium / 768p | 6−7 | 12−14 |
| high / 1080p | 3−4 | 6−7 |
| ultra / 1080p | − | 5−6 |
| 4K / 2160p | 0−1 | − |
| The average gaming FPS of Radeon HD 4850 X2 in The Witcher 3: Wild Hunt is 140% more, than GeForce GT 640M. | ||
| low / 768p | 70−75 | 70−75 |
| medium / 768p | 35−40 | 35−40 |
| ultra / 1080p | 12−14 | 16−18 |
| high / 768p | 27−30 | 30−35 |
| The average gaming FPS of Radeon HD 4850 X2 in World of Tanks is 5% more, than GeForce GT 640M. | ||
Full Specs
| GeForce GT 640M | Radeon HD 4850 X2 | |
| Architecture | Kepler | TeraScale |
| Code name | N13P-GS | R700 |
| Type | Laptop | Desktop |
| Release date | 22 March 2012 | 7 November 2008 |
| Pipelines | 384 | 800 |
| Core clock speed | 625 MHz | |
| Boost Clock | 645 MHz | |
| Transistor count | 1,270 million | 956 million |
| Manufacturing process technology | 28 nm | 55 nm |
| Texture fill rate | 25.00 | |
| Floating-point performance | 480.0 gflops | 2x 1,000.0 gflops |
| Length | 267 mm | |
| Memory bus width | 128bit | 256 Bit |
| Memory clock speed | 1800 - 4000 MHz | 1990 MHz |
| Memory bandwidth | 63.68 GB/s | |
| Shared memory | - | |
| DirectX | 12 API | 10.1 (10_1) |
| Shader Model | 5.1 | 4.1 |
| OpenGL | 4.5 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| 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 | + | |
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