Radeon RX 6600S vs GeForce GT 640 OEM
Aggregate performance score
We've compared GeForce GT 640 OEM with Radeon RX 6600S, including specs and performance data.
RX 6600S outperforms GT 640 OEM by a whopping 1798% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 932 | 169 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.37 | 28.11 |
| Architecture | Kepler (2012−2018) | RDNA 2.0 (2020−2024) |
| GPU code name | GK107 | Navi 23 |
| Market segment | Desktop | Laptop |
| Release date | 24 April 2012 (12 years ago) | 4 January 2022 (2 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 1792 |
| Core clock speed | 797 MHz | 1700 MHz |
| Boost clock speed | no data | 2000 MHz |
| Number of transistors | 1,270 million | 11,060 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 50 Watt | 80 Watt |
| Texture fill rate | 25.50 | 224.0 |
| Floating-point processing power | 0.6121 TFLOPS | 7.168 TFLOPS |
| ROPs | 16 | 64 |
| TMUs | 32 | 112 |
| Ray Tracing Cores | no data | 28 |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Laptop size | no data | medium sized |
| Interface | PCIe 3.0 x16 | PCIe 4.0 x8 |
| Length | 145 mm | no data |
| Width | 1-slot | no data |
| Supplementary power connectors | None | None |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | DDR3 | GDDR6 |
| Maximum RAM amount | 2 GB | 4 GB |
| Memory bus width | 128 Bit | 128 Bit |
| Memory clock speed | 891 MHz | 1750 MHz |
| Memory bandwidth | 28.51 GB/s | 224.0 GB/s |
| Shared memory | no data | - |
Connectivity and outputs
Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.
| Display Connectors | 1x DVI, 1x HDMI, 1x DisplayPort | No outputs |
| HDMI | + | - |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.5 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.1 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.0 | - |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 60−65
+0%
|
60−65
+0%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 75−80
+0%
|
75−80
+0%
|
| Assassin's Creed Valhalla | 60−65
+0%
|
60−65
+0%
|
| Battlefield 5 | 110−120
+0%
|
110−120
+0%
|
| Call of Duty: Modern Warfare | 70−75
+0%
|
70−75
+0%
|
| Cyberpunk 2077 | 60−65
+0%
|
60−65
+0%
|
| Far Cry 5 | 75−80
+0%
|
75−80
+0%
|
| Far Cry New Dawn | 85−90
+0%
|
85−90
+0%
|
| Forza Horizon 4 | 180−190
+0%
|
180−190
+0%
|
| Hitman 3 | 75−80
+0%
|
75−80
+0%
|
| Horizon Zero Dawn | 150−160
+0%
|
150−160
+0%
|
| Metro Exodus | 110−120
+0%
|
110−120
+0%
|
| Red Dead Redemption 2 | 85−90
+0%
|
85−90
+0%
|
| Shadow of the Tomb Raider | 120−130
+0%
|
120−130
+0%
|
| Watch Dogs: Legion | 120−130
+0%
|
120−130
+0%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 75−80
+0%
|
75−80
+0%
|
| Assassin's Creed Valhalla | 60−65
+0%
|
60−65
+0%
|
| Battlefield 5 | 110−120
+0%
|
110−120
+0%
|
| Call of Duty: Modern Warfare | 70−75
+0%
|
70−75
+0%
|
| Cyberpunk 2077 | 60−65
+0%
|
60−65
+0%
|
| Far Cry 5 | 75−80
+0%
|
75−80
+0%
|
| Far Cry New Dawn | 85−90
+0%
|
85−90
+0%
|
| Forza Horizon 4 | 180−190
+0%
|
180−190
+0%
|
| Hitman 3 | 75−80
+0%
|
75−80
+0%
|
| Horizon Zero Dawn | 150−160
+0%
|
150−160
+0%
|
| Metro Exodus | 110−120
+0%
|
110−120
+0%
|
| Red Dead Redemption 2 | 85−90
+0%
|
85−90
+0%
|
| Shadow of the Tomb Raider | 120−130
+0%
|
120−130
+0%
|
| The Witcher 3: Wild Hunt | 70−75
+0%
|
70−75
+0%
|
| Watch Dogs: Legion | 120−130
+0%
|
120−130
+0%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 75−80
+0%
|
75−80
+0%
|
| Assassin's Creed Valhalla | 60−65
+0%
|
60−65
+0%
|
| Call of Duty: Modern Warfare | 70−75
+0%
|
70−75
+0%
|
| Cyberpunk 2077 | 60−65
+0%
|
60−65
+0%
|
| Far Cry 5 | 75−80
+0%
|
75−80
+0%
|
| Forza Horizon 4 | 180−190
+0%
|
180−190
+0%
|
| Hitman 3 | 75−80
+0%
|
75−80
+0%
|
| Horizon Zero Dawn | 150−160
+0%
|
150−160
+0%
|
| Shadow of the Tomb Raider | 120−130
+0%
|
120−130
+0%
|
| The Witcher 3: Wild Hunt | 70−75
+0%
|
70−75
+0%
|
| Watch Dogs: Legion | 120−130
+0%
|
120−130
+0%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 85−90
+0%
|
85−90
+0%
|
1440p
High Preset
| Battlefield 5 | 65−70
+0%
|
65−70
+0%
|
| Far Cry New Dawn | 50−55
+0%
|
50−55
+0%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 35−40
+0%
|
35−40
+0%
|
| Assassin's Creed Valhalla | 35−40
+0%
|
35−40
+0%
|
| Call of Duty: Modern Warfare | 40−45
+0%
|
40−45
+0%
|
| Cyberpunk 2077 | 27−30
+0%
|
27−30
+0%
|
| Far Cry 5 | 40−45
+0%
|
40−45
+0%
|
| Forza Horizon 4 | 200−210
+0%
|
200−210
+0%
|
| Hitman 3 | 45−50
+0%
|
45−50
+0%
|
| Horizon Zero Dawn | 75−80
+0%
|
75−80
+0%
|
| Metro Exodus | 65−70
+0%
|
65−70
+0%
|
| Shadow of the Tomb Raider | 80−85
+0%
|
80−85
+0%
|
| The Witcher 3: Wild Hunt | 45−50
+0%
|
45−50
+0%
|
| Watch Dogs: Legion | 180−190
+0%
|
180−190
+0%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 60−65
+0%
|
60−65
+0%
|
4K
High Preset
| Battlefield 5 | 35−40
+0%
|
35−40
+0%
|
| Far Cry New Dawn | 27−30
+0%
|
27−30
+0%
|
| Hitman 3 | 27−30
+0%
|
27−30
+0%
|
| Horizon Zero Dawn | 170−180
+0%
|
170−180
+0%
|
| Metro Exodus | 40−45
+0%
|
40−45
+0%
|
| The Witcher 3: Wild Hunt | 40−45
+0%
|
40−45
+0%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 21−24
+0%
|
21−24
+0%
|
| Assassin's Creed Valhalla | 21−24
+0%
|
21−24
+0%
|
| Call of Duty: Modern Warfare | 21−24
+0%
|
21−24
+0%
|
| Cyberpunk 2077 | 10−12
+0%
|
10−12
+0%
|
| Far Cry 5 | 20−22
+0%
|
20−22
+0%
|
| Forza Horizon 4 | 45−50
+0%
|
45−50
+0%
|
| Shadow of the Tomb Raider | 45−50
+0%
|
45−50
+0%
|
| Watch Dogs: Legion | 16−18
+0%
|
16−18
+0%
|
4K
Epic Preset
| Red Dead Redemption 2 | 30−35
+0%
|
30−35
+0%
|
All in all, in popular games:
- there's a draw in 72 tests (100%)
Pros & cons summary
| Performance score | 1.70 | 32.26 |
| Recency | 24 April 2012 | 4 January 2022 |
| Maximum RAM amount | 2 GB | 4 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 50 Watt | 80 Watt |
GT 640 OEM has 60% lower power consumption.
RX 6600S, on the other hand, has a 1797.6% higher aggregate performance score, an age advantage of 9 years, a 100% higher maximum VRAM amount, and a 300% more advanced lithography process.
The Radeon RX 6600S is our recommended choice as it beats the GeForce GT 640 OEM in performance tests.
Be aware that GeForce GT 640 OEM is a desktop card while Radeon RX 6600S is a notebook one.
Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.
Comparisons with similar GPUs
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
