GeForce GT 745A vs Radeon RX 640
When choosing between GeForce GT 745A and Radeon RX 640, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 745A and Radeon RX 640.
GeForce GT 745A
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
| GeForce GT 745A | Radeon RX 640 | |
| Power consumption (TDP) | 33 Watt | 50 Watt |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x8 |
| Supplementary power connectors | None | |
| Memory type | DDR3 | GDDR5 |
| Maximum RAM amount | 2 GB | 4 GB |
| Display Connectors | No outputs | 1x DVI, 1x HDMI, 1x DisplayPort |
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- Radeon RX 640 has 51% more power consumption, than GeForce GT 745A.
- GeForce GT 745A 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 GeForce GT 745A.
- GeForce GT 745A is used in Desktops, and Radeon RX 640 - in Laptops.
- GeForce GT 745A is build with Kepler architecture, and Radeon RX 640 - with Polaris.
- Core clock speed of Radeon RX 640 is 381 MHz higher, than GeForce GT 745A.
- GeForce GT 745A is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
- Memory clock speed of Radeon RX 640 is 4200 MHz higher, than GeForce GT 745A.
Game benchmarks
| high / 1080p | 2−3 | 5−6 |
| ultra / 1080p | 0−1 | 3−4 |
| QHD / 1440p | 0−1 | 2−3 |
| low / 720p | 12−14 | 16−18 |
| medium / 1080p | 4−5 | 7−8 |
| The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 66% more, than GeForce GT 745A. | ||
| high / 1080p | 6−7 | 10−12 |
| ultra / 1080p | 5−6 | 8−9 |
| QHD / 1440p | 0−1 | 0−1 |
| low / 720p | 16−18 | 24−27 |
| medium / 1080p | 7−8 | 10−12 |
| The average gaming FPS of Radeon RX 640 in Battlefield 5 is 55% more, than GeForce GT 745A. | ||
| low / 768p | 50−55 | 45−50 |
| high / 1080p | 40−45 | 40−45 |
| QHD / 1440p | 0−1 | 0−1 |
| The average gaming FPS of GeForce GT 745A in Call of Duty: Warzone is 4% more, than Radeon RX 640. | ||
| low / 768p | 110−120 | 130−140 |
| medium / 768p | 85−90 | 100−110 |
| ultra / 1080p | 40−45 | 50−55 |
| QHD / 1440p | 24−27 | 27−30 |
| 4K / 2160p | − | 12−14 |
| high / 768p | 60−65 | 80−85 |
| The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 21% more, than GeForce GT 745A. | ||
| low / 768p | 60−65 | 50−55 |
| ultra / 1080p | 18−20 | 18−20 |
| medium / 1080p | 50−55 | 45−50 |
| The average gaming FPS of GeForce GT 745A in Cyberpunk 2077 is 12% more, than Radeon RX 640. | ||
| low / 768p | 70−75 | 80−85 |
| medium / 768p | 50−55 | 55−60 |
| ultra / 1080p | 24−27 | 30−35 |
| The average gaming FPS of Radeon RX 640 in Dota 2 is 14% more, than GeForce GT 745A. | ||
| high / 1080p | 3−4 | 7−8 |
| ultra / 1080p | 3−4 | 5−6 |
| 4K / 2160p | 1−2 | 5−6 |
| low / 720p | 12−14 | 18−20 |
| medium / 1080p | 4−5 | 8−9 |
| The average gaming FPS of Radeon RX 640 in Far Cry 5 is 80% more, than GeForce GT 745A. | ||
| high / 1080p | 10−12 | 7−8 |
| ultra / 1080p | 6−7 | 0−1 |
| QHD / 1440p | 2−3 | 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 GeForce GT 745A. | ||
| high / 1080p | 7−8 | 10−11 |
| ultra / 1080p | 5−6 | − |
| QHD / 1440p | 0−1 | − |
| 4K / 2160p | − | 8−9 |
| low / 720p | 18−20 | 24−27 |
| medium / 1080p | 9−10 | 12−14 |
| The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 33% more, than GeForce GT 745A. | ||
| low / 768p | 45−50 | 50−55 |
| medium / 768p | 40−45 | − |
| high / 1080p | 7−8 | 10−12 |
| ultra / 1080p | 3−4 | 5−6 |
| QHD / 1440p | 0−1 | − |
| medium / 720p | − | 45−50 |
| The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 21% more, than GeForce GT 745A. | ||
| high / 1080p | 1−2 | 3−4 |
| ultra / 1080p | 0−1 | 1−2 |
| 4K / 2160p | 0−1 | − |
| low / 720p | 7−8 | 10−11 |
| medium / 1080p | 4−5 | 5−6 |
| The average gaming FPS of Radeon RX 640 in Metro Exodus is 50% more, than GeForce GT 745A. | ||
| low / 768p | 80−85 | 90−95 |
| high / 1080p | 80−85 | − |
| ultra / 1080p | 70−75 | 80−85 |
| The average gaming FPS of Radeon RX 640 in Minecraft is 12% more, than GeForce GT 745A. | ||
| high / 1080p | 14−16 | 6−7 |
| ultra / 1080p | 12−14 | 2−3 |
| 4K / 2160p | − | 0−1 |
| low / 720p | 24−27 | 27−30 |
| medium / 1080p | 14−16 | 10−11 |
| The average gaming FPS of GeForce GT 745A in PLAYERUNKNOWN'S BATTLEGROUNDS is 41% more, than Radeon RX 640. | ||
| ultra / 1080p | 6−7 | − |
| low / 720p | 8−9 | 10−12 |
| medium / 1080p | 7−8 | 9−10 |
| The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 25% more, than GeForce GT 745A. | ||
| low / 768p | 16−18 | 21−24 |
| medium / 768p | 12−14 | 14−16 |
| high / 1080p | 6−7 | 6−7 |
| ultra / 1080p | 4−5 | 4−5 |
| 4K / 2160p | 2−3 | 3−4 |
| The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 25% more, than GeForce GT 745A. | ||
| low / 768p | 80−85 | 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 4% more, than GeForce GT 745A. | ||
Full Specs
| GeForce GT 745A | Radeon RX 640 | |
| Architecture | Kepler | Polaris |
| Code name | GK107 | Polaris 12 |
| Type | Desktop | Laptop |
| Release date | 26 August 2013 | 12 August 2019 |
| Pipelines | 384 | 640 |
| Core clock speed | 837 MHz | 1218 MHz |
| Boost Clock | 915 MHz | 1218 MHz |
| Transistor count | 1,270 million | 2,200 million |
| Manufacturing process technology | 28 nm | 14 nm |
| Texture fill rate | 29.28 | 38.98 |
| Floating-point performance | 642.8 gflops | |
| Memory bus width | 128 Bit | 64 Bit |
| Memory clock speed | 1800 MHz | 6000 MHz |
| Memory bandwidth | 28.8 GB/s | 112.0 GB/s |
| Shared memory | - | |
| DirectX | 12 (11_0) | 12 (12_0) |
| Shader Model | 5.1 | 6.4 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.0 |
| Vulkan | 1.1.126 | 1.2.131 |
| CUDA | 3.0 | |
| FreeSync | + | |
| Bitcoin / BTC (SHA256) | 26 Mh/s | |
| Laptop size | large | |
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