Radeon HD 4850 X2 vs Radeon RX 640
If you are going to buy a new graphics card and are choosing between Radeon HD 4850 X2 and Radeon RX 640, 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 4850 X2 stacks up against Radeon RX 640, check out specs charts below.
Radeon HD 4850 X2
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 4850 X2 | Radeon RX 640 | |
| Power consumption (TDP) | 250 Watt | 50 Watt |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x8 |
| Supplementary power connectors | 1x 6-pin + 1x 8-pin | None |
| Memory type | GDDR3 | GDDR5 |
| Maximum RAM amount | 512 MB | 4 GB |
| Display Connectors | 4x DVI, 1x S-Video | 1x DVI, 1x HDMI, 1x DisplayPort |
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- Radeon HD 4850 X2 has 400% more power consumption, than Radeon RX 640.
- Radeon HD 4850 X2 is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
- Radeon HD 4850 X2 has 508 GB more memory, than Radeon RX 640.
- Radeon HD 4850 X2 is used in Desktops, and Radeon RX 640 - in Laptops.
- Radeon HD 4850 X2 is build with TeraScale architecture, and Radeon RX 640 - with Polaris.
- Core clock speed of Radeon RX 640 is 593 MHz higher, than Radeon HD 4850 X2.
- Radeon HD 4850 X2 is manufactured by 55 nm process technology, and Radeon RX 640 - by 14 nm process technology.
- Memory clock speed of Radeon RX 640 is 4010 MHz higher, than Radeon HD 4850 X2.
Game benchmarks
| high / 1080p | 3−4 | 5−6 |
| ultra / 1080p | 2−3 | 3−4 |
| QHD / 1440p | 0−1 | 2−3 |
| low / 720p | 14−16 | 16−18 |
| medium / 1080p | 5−6 | 7−8 |
| The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than Radeon HD 4850 X2. | ||
| high / 1080p | − | 10−12 |
| ultra / 1080p | 7−8 | 8−9 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 18−20 | 24−27 |
| medium / 1080p | 8−9 | 10−12 |
| The average gaming FPS of Radeon RX 640 in Battlefield 5 is 36% more, than Radeon HD 4850 X2. | ||
| low / 768p | 45−50 | 45−50 |
| high / 1080p | 30−35 | 40−45 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of Radeon RX 640 in Call of Duty: Warzone is 12% more, than Radeon HD 4850 X2. | ||
| low / 768p | 120−130 | 130−140 |
| medium / 768p | 90−95 | 100−110 |
| ultra / 1080p | 40−45 | 50−55 |
| QHD / 1440p | 24−27 | 27−30 |
| 4K / 2160p | 18−20 | 12−14 |
| high / 768p | 65−70 | 80−85 |
| The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 11% more, than Radeon HD 4850 X2. | ||
| low / 768p | 80−85 | 50−55 |
| ultra / 1080p | 14−16 | 18−20 |
| medium / 1080p | 40−45 | 45−50 |
| The average gaming FPS of Radeon HD 4850 X2 in Cyberpunk 2077 is 17% more, than Radeon RX 640. | ||
| low / 768p | 75−80 | 80−85 |
| medium / 768p | 50−55 | 55−60 |
| ultra / 1080p | 27−30 | 30−35 |
| The average gaming FPS of Radeon RX 640 in Dota 2 is 9% more, than Radeon HD 4850 X2. | ||
| high / 1080p | 5−6 | 7−8 |
| ultra / 1080p | − | 5−6 |
| 4K / 2160p | 2−3 | 5−6 |
| low / 720p | 14−16 | 18−20 |
| medium / 1080p | 6−7 | 8−9 |
| The average gaming FPS of Radeon RX 640 in Far Cry 5 is 42% more, than Radeon HD 4850 X2. | ||
| high / 1080p | 12−14 | 7−8 |
| ultra / 1080p | 7−8 | 0−1 |
| QHD / 1440p | − | 0−1 |
| low / 720p | 50−55 | 60−65 |
| medium / 1080p | 14−16 | 18−20 |
| The average gaming FPS of Radeon RX 640 in Fortnite is 11% more, than Radeon HD 4850 X2. | ||
| high / 1080p | 7−8 | 10−11 |
| QHD / 1440p | 0−1 | − |
| 4K / 2160p | − | 8−9 |
| low / 720p | 20−22 | 24−27 |
| medium / 1080p | 9−10 | 12−14 |
| The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 33% more, than Radeon HD 4850 X2. | ||
| low / 768p | 45−50 | 50−55 |
| high / 1080p | 8−9 | 10−12 |
| ultra / 1080p | 5−6 | 5−6 |
| QHD / 1440p | 0−1 | − |
| medium / 720p | 40−45 | 45−50 |
| The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 11% more, than Radeon HD 4850 X2. | ||
| high / 1080p | 3−4 | 3−4 |
| ultra / 1080p | 1−2 | 1−2 |
| 4K / 2160p | 0−1 | − |
| low / 720p | 8−9 | 10−11 |
| medium / 1080p | 4−5 | 5−6 |
| The average gaming FPS of Radeon RX 640 in Metro Exodus is 25% more, than Radeon HD 4850 X2. | ||
| low / 768p | 85−90 | 90−95 |
| high / 1080p | 85−90 | − |
| ultra / 1080p | 80−85 | 80−85 |
| medium / 1080p | 85−90 | − |
| The average gaming FPS of Radeon RX 640 in Minecraft is 2% more, than Radeon HD 4850 X2. | ||
| high / 1080p | − | 6−7 |
| ultra / 1080p | 12−14 | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 27−30 | 27−30 |
| medium / 1080p | 14−16 | 10−11 |
| The average gaming FPS of Radeon HD 4850 X2 in PLAYERUNKNOWN'S BATTLEGROUNDS is 38% more, than Radeon RX 640. | ||
| ultra / 1080p | 7−8 | − |
| QHD / 1440p | 0−1 | − |
| low / 720p | 8−9 | 10−12 |
| medium / 1080p | − | 9−10 |
| The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 37% more, than Radeon HD 4850 X2. | ||
| low / 768p | 16−18 | 21−24 |
| medium / 768p | 12−14 | 14−16 |
| high / 1080p | 6−7 | 6−7 |
| ultra / 1080p | 5−6 | 4−5 |
| 4K / 2160p | − | 3−4 |
| The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 20% more, than Radeon HD 4850 X2. | ||
| low / 768p | 70−75 | 75−80 |
| medium / 768p | 35−40 | 40−45 |
| ultra / 1080p | 16−18 | 18−20 |
| high / 768p | 30−35 | 35−40 |
| The average gaming FPS of Radeon RX 640 in World of Tanks is 12% more, than Radeon HD 4850 X2. | ||
Full Specs
| Radeon HD 4850 X2 | Radeon RX 640 | |
| Architecture | TeraScale | Polaris |
| Code name | R700 | Polaris 12 |
| Type | Desktop | Laptop |
| Release date | 7 November 2008 | 12 August 2019 |
| Pipelines | 800 | 640 |
| Core clock speed | 625 MHz | 1218 MHz |
| Boost Clock | 1218 MHz | |
| Transistor count | 956 million | 2,200 million |
| Manufacturing process technology | 55 nm | 14 nm |
| Texture fill rate | 25.00 | 38.98 |
| Floating-point performance | 2x 1,000.0 gflops | |
| Length | 267 mm | |
| Memory bus width | 256 Bit | 64 Bit |
| Memory clock speed | 1990 MHz | 6000 MHz |
| Memory bandwidth | 63.68 GB/s | 112.0 GB/s |
| Shared memory | - | |
| DirectX | 10.1 (10_1) | 12 (12_0) |
| Shader Model | 4.1 | 6.4 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 2.0 |
| Vulkan | N/A | 1.2.131 |
| FreeSync | + | |
| Laptop size | large | |
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