GeForce GT 640 vs GTX 1660 Ti
Aggregate performance score
We've compared GeForce GTX 1660 Ti and GeForce GT 640, covering specs and all relevant benchmarks.
GTX 1660 Ti outperforms GT 640 by a whopping 995% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 160 | 769 |
| Place by popularity | 30 | not in top-100 |
| Cost-effectiveness evaluation | 44.15 | 0.20 |
| Power efficiency | 19.16 | 3.23 |
| Architecture | Turing (2018−2022) | Kepler (2012−2018) |
| GPU code name | TU116 | GK107 |
| Market segment | Desktop | Desktop |
| Release date | 22 February 2019 (5 years ago) | 5 June 2012 (12 years ago) |
| Launch price (MSRP) | $279 | $99 |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
GTX 1660 Ti has 21975% better value for money than GT 640.
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 | 1536 | 384 |
| Core clock speed | 1500 MHz | 902 MHz |
| Boost clock speed | 1770 MHz | no data |
| Number of transistors | 6,600 million | 1,270 million |
| Manufacturing process technology | 12 nm | 28 nm |
| Power consumption (TDP) | 120 Watt | 65 Watt |
| Texture fill rate | 169.9 | 28.86 |
| Floating-point processing power | 5.437 TFLOPS | 0.6927 TFLOPS |
| ROPs | 48 | 16 |
| TMUs | 96 | 32 |
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).
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Length | 229 mm | 145 mm |
| Width | 2-slot | 1-slot |
| Supplementary power connectors | 1x 8-pin | 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 | GDDR6 | DDR3 |
| Maximum RAM amount | 6 GB | 2 GB |
| Memory bus width | 192 Bit | 128 Bit |
| Memory clock speed | 1500 MHz | 891 MHz |
| Memory bandwidth | 288.0 GB/s | 28.51 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 | 1x DVI, 1x HDMI, 1x DisplayPort |
| HDMI | + | + |
API compatibility
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (12_1) | 12 (11_0) |
| Shader Model | 6.5 | 5.1 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | 1.1.126 |
| CUDA | 7.5 | 3.0 |
Synthetic benchmark performance
Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.
3DMark Fire Strike Graphics
Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.
GeekBench 5 OpenCL
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.
GeekBench 5 Vulkan
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses Vulkan API by AMD & Khronos Group.
GeekBench 5 CUDA
Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses CUDA API by NVIDIA.
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Average FPS across all PC games
Here are the average frames per second in a large set of popular games across different resolutions:
| Full HD | 103
+1044%
| 9−10
−1044%
|
| 1440p | 59
+1080%
| 5−6
−1080%
|
| 4K | 37
+1133%
| 3−4
−1133%
|
Cost per frame, $
| 1080p | 2.71 | 11.00 |
| 1440p | 4.73 | 19.80 |
| 4K | 7.54 | 33.00 |
FPS performance in popular games
Full HD
Low Preset
| Cyberpunk 2077 | 78
+1014%
|
7−8
−1014%
|
Full HD
Medium Preset
| Assassin's Creed Odyssey | 86
+1129%
|
7−8
−1129%
|
| Assassin's Creed Valhalla | 74
+1133%
|
6−7
−1133%
|
| Battlefield 5 | 130
+1200%
|
10−11
−1200%
|
| Call of Duty: Modern Warfare | 95
+1088%
|
8−9
−1088%
|
| Cyberpunk 2077 | 71
+1083%
|
6−7
−1083%
|
| Far Cry 5 | 104
+1056%
|
9−10
−1056%
|
| Far Cry New Dawn | 112
+1020%
|
10−11
−1020%
|
| Forza Horizon 4 | 231
+1000%
|
21−24
−1000%
|
| Hitman 3 | 70−75
+1067%
|
6−7
−1067%
|
| Horizon Zero Dawn | 140−150
+1108%
|
12−14
−1108%
|
| Metro Exodus | 134
+1017%
|
12−14
−1017%
|
| Red Dead Redemption 2 | 119
+1090%
|
10−11
−1090%
|
| Shadow of the Tomb Raider | 171
+1121%
|
14−16
−1121%
|
| Watch Dogs: Legion | 120−130
+1100%
|
10−11
−1100%
|
Full HD
High Preset
| Assassin's Creed Odyssey | 122
+1120%
|
10−11
−1120%
|
| Assassin's Creed Valhalla | 55
+1000%
|
5−6
−1000%
|
| Battlefield 5 | 121
+1110%
|
10−11
−1110%
|
| Call of Duty: Modern Warfare | 85
+1114%
|
7−8
−1114%
|
| Cyberpunk 2077 | 57
+1040%
|
5−6
−1040%
|
| Far Cry 5 | 82
+1071%
|
7−8
−1071%
|
| Far Cry New Dawn | 79
+1029%
|
7−8
−1029%
|
| Forza Horizon 4 | 218
+1111%
|
18−20
−1111%
|
| Hitman 3 | 70−75
+1067%
|
6−7
−1067%
|
| Horizon Zero Dawn | 140−150
+1108%
|
12−14
−1108%
|
| Metro Exodus | 114
+1040%
|
10−11
−1040%
|
| Red Dead Redemption 2 | 89
+1013%
|
8−9
−1013%
|
| Shadow of the Tomb Raider | 127
+1170%
|
10−11
−1170%
|
| The Witcher 3: Wild Hunt | 70−75
+1067%
|
6−7
−1067%
|
| Watch Dogs: Legion | 120−130
+1100%
|
10−11
−1100%
|
Full HD
Ultra Preset
| Assassin's Creed Odyssey | 53
+1225%
|
4−5
−1225%
|
| Assassin's Creed Valhalla | 50
+1150%
|
4−5
−1150%
|
| Call of Duty: Modern Warfare | 70
+1067%
|
6−7
−1067%
|
| Cyberpunk 2077 | 46
+1050%
|
4−5
−1050%
|
| Far Cry 5 | 61
+1120%
|
5−6
−1120%
|
| Forza Horizon 4 | 97
+1113%
|
8−9
−1113%
|
| Hitman 3 | 70−75
+1067%
|
6−7
−1067%
|
| Horizon Zero Dawn | 102
+1033%
|
9−10
−1033%
|
| Shadow of the Tomb Raider | 110
+1000%
|
10−11
−1000%
|
| The Witcher 3: Wild Hunt | 62
+1140%
|
5−6
−1140%
|
| Watch Dogs: Legion | 120−130
+1100%
|
10−11
−1100%
|
Full HD
Epic Preset
| Red Dead Redemption 2 | 97
+1113%
|
8−9
−1113%
|
1440p
High Preset
| Battlefield 5 | 75
+1150%
|
6−7
−1150%
|
| Far Cry New Dawn | 54
+1250%
|
4−5
−1250%
|
1440p
Ultra Preset
| Assassin's Creed Odyssey | 41
+1267%
|
3−4
−1267%
|
| Assassin's Creed Valhalla | 36
+1100%
|
3−4
−1100%
|
| Call of Duty: Modern Warfare | 52
+1200%
|
4−5
−1200%
|
| Cyberpunk 2077 | 27
+1250%
|
2−3
−1250%
|
| Far Cry 5 | 41
+1267%
|
3−4
−1267%
|
| Forza Horizon 4 | 202
+1022%
|
18−20
−1022%
|
| Hitman 3 | 40−45
+1300%
|
3−4
−1300%
|
| Horizon Zero Dawn | 75
+1150%
|
6−7
−1150%
|
| Metro Exodus | 65
+1200%
|
5−6
−1200%
|
| Shadow of the Tomb Raider | 78
+1014%
|
7−8
−1014%
|
| The Witcher 3: Wild Hunt | 45−50
+1050%
|
4−5
−1050%
|
| Watch Dogs: Legion | 170−180
+1143%
|
14−16
−1143%
|
1440p
Epic Preset
| Red Dead Redemption 2 | 65
+1200%
|
5−6
−1200%
|
4K
High Preset
| Battlefield 5 | 36
+1100%
|
3−4
−1100%
|
| Far Cry New Dawn | 29
+1350%
|
2−3
−1350%
|
| Hitman 3 | 27−30
+1250%
|
2−3
−1250%
|
| Horizon Zero Dawn | 160−170
+1064%
|
14−16
−1064%
|
| Metro Exodus | 46
+1050%
|
4−5
−1050%
|
| The Witcher 3: Wild Hunt | 43
+1333%
|
3−4
−1333%
|
4K
Ultra Preset
| Assassin's Creed Odyssey | 25
+1150%
|
2−3
−1150%
|
| Assassin's Creed Valhalla | 19
+1800%
|
1−2
−1800%
|
| Call of Duty: Modern Warfare | 25
+1150%
|
2−3
−1150%
|
| Cyberpunk 2077 | 11
+1000%
|
1−2
−1000%
|
| Far Cry 5 | 20
+1900%
|
1−2
−1900%
|
| Forza Horizon 4 | 51
+1175%
|
4−5
−1175%
|
| Shadow of the Tomb Raider | 43
+1333%
|
3−4
−1333%
|
| Watch Dogs: Legion | 16−18
+1500%
|
1−2
−1500%
|
4K
Epic Preset
| Red Dead Redemption 2 | 44
+1000%
|
4−5
−1000%
|
This is how GTX 1660 Ti and GT 640 compete in popular games:
- GTX 1660 Ti is 1044% faster in 1080p
- GTX 1660 Ti is 1080% faster in 1440p
- GTX 1660 Ti is 1133% faster in 4K
Pros & cons summary
| Performance score | 33.51 | 3.06 |
| Recency | 22 February 2019 | 5 June 2012 |
| Maximum RAM amount | 6 GB | 2 GB |
| Chip lithography | 12 nm | 28 nm |
| Power consumption (TDP) | 120 Watt | 65 Watt |
GTX 1660 Ti has a 995.1% higher aggregate performance score, an age advantage of 6 years, a 200% higher maximum VRAM amount, and a 133.3% more advanced lithography process.
GT 640, on the other hand, has 84.6% lower power consumption.
The GeForce GTX 1660 Ti is our recommended choice as it beats the GeForce GT 640 in performance tests.
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.
