Contents:HighlightsSummaryGaming PerformanceBenchmark PerformanceTechnical SpecsRelated ComparisonsRelated GPUs
Performance
GeForce GT 640M
1,7282% of 104,598
GeForce GTX 660 Ti387% better
8,4158% of 104,598
The GeForce GTX 660 Ti has 387% better performance than the GeForce GT 640M for the 3DMark 11 Performance GPU benchmark.
Performance per dollar
GeForce GT 640M
No data available
GeForce GTX 660 Ti
28.1417% of 161.45
The GeForce GTX 660 Ti has 17% of the performance per dollar compared to the leader for the 3DMark 11 Performance GPU benchmark: AMD Radeon RX 7600.
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Summary
#
About the NVIDIA GeForce GT 640M GPU
The NVIDIA GeForce GT 640M is an end-of-life mobile graphics card that released in Q1 2012. It is built on the Kepler GPU microarchitecture (codename GK107) and is manufactured on a 28 nm process.
Memory
The GT 640M has 2 GB of DDR3 memory, with a 900 MHz memory clock and a 128 bit interface. This gives it a memory bandwidth of 28.8 Gb/s, which affects how fast it can transfer data to and from memory. GPU memory stores temporary data that helps the GPU with complex math and graphics operations. More memory is generally better, as not having enough can cause performance bottlenecks.
Cores and Clock Speeds
The GT 640M includes 384 CUDA cores, the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 624 MHz and can dynamically boost its clock speed up to 709 MHz. Complementing the processing units are 32 texture mapping units (TMUs) for efficient texture filtering and 16 render output units (ROPs) for pixel processing.
Compatibility & Power Consumption
The GPU has a thermal design power (TDP) of 32 W. A power supply not strong enough to handle this might result in system crashes and potentially damage your hardware.
Benchmark Performance
The GT 640M has the 386th best 3DMark 11 Performance GPU score among the 543 benchmarked GPUs in our database. It achieves 1.65% of the performance of the best benchmarked GPU, the NVIDIA GeForce RTX 4090.
About the NVIDIA GeForce GTX 660 Ti GPU
The NVIDIA GeForce GTX 660 Ti is an end-of-life desktop graphics card that released in Q3 2012 with a MSRP of $299. It is built on the Kepler GPU microarchitecture (codename GK104) and is manufactured on a 28 nm process.
Memory
The GTX 660 Ti has 2 GB of GDDR5 memory, with a 1,502 MHz memory clock and a 192 bit interface. This gives it a memory bandwidth of 144.2 Gb/s, which affects how fast it can transfer data to and from memory. GPU memory stores temporary data that helps the GPU with complex math and graphics operations. More memory is generally better, as not having enough can cause performance bottlenecks.
Cores and Clock Speeds
The GTX 660 Ti includes 1,344 CUDA cores, the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 915 MHz and can dynamically boost its clock speed up to 980 MHz. Complementing the processing units are 112 texture mapping units (TMUs) for efficient texture filtering and 24 render output units (ROPs) for pixel processing.
Compatibility & Power Consumption
The GTX 660 Ti occupies 2 PCIe expansion slots. It supports DVI, HDMI 1.4a, DisplayPort 1.2 display connections. NVIDIA recommends a power supply of at least 450 W to handle the GPU's thermal design power (TDP) of 150 W.
Benchmark Performance & Value
The GTX 660 Ti has the 197th best 3DMark 11 Performance GPU score among the 543 benchmarked GPUs in our database. It achieves 8.05% of the performance of the best benchmarked GPU, the NVIDIA GeForce RTX 4090. Its 8,415 score and $299 launch price (MSRP) gives it a performance per dollar of 28.14. This is the 81st best in value for the 3DMark 11 Performance GPU benchmark.
General Info
General overview of the GPU, including details like its manufacturer, release date, launch price, and current production status.
| Info | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| Manufacturer | NVIDIA | NVIDIA |
| Architecture | Kepler | Kepler |
| Market Segment | Mobile | Desktop |
| Release Date | Q1 2012 | Q3 2012 |
| Launch Price (MSRP) | -- | $299 |
| Production Status | End-of-life | End-of-life |
| Shop | Check Price | Check Price |
Gaming Performance
#
Select a game to compare FPS metrics
Dota 2 - Reborn
The Witcher 3
GTA V
BioShock Infinite
CS: GO
FPS Benchmarks
This table showcases the average frame rate (FPS) achieved both GPUs in at various resolutions. Frame rate is a crucial indicator of how smoothly the GPU can run the game. A higher FPS generally translates to a smoother gameplay experience.
- Frames Per Second
Dota 2 - Reborn | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| Low - 720p | 57 FPS | -- |
| Medium - 768p | 50 FPS | -- |
| High - 1080p | 25 FPS | -- |
| Ultra - 1080p | 24 FPS | -- |
| QHD - 1440p | -- | -- |
| 4K UHD - 2160p | -- | -- |
FPS Source: Notebookcheck
Compare Frames Per Second (FPS)
The average frame rate (FPS) in can be compared to similar GPUs to assess relative performance. Generally, higher FPS results in a smoother gameplay experience.
Choose Baseline GPU:GeForce GT 640M orGeForce GTX 660 Ti
| GPU | Frames Per Second | |
|---|---|---|
| Radeon R9 M280X | 31.3 | +30% |
| GeForce MX130 | 31 | +29% |
| Radeon R9 M375 | 30 | +24% |
| Radeon 530 | 28 | +16% |
| GeForce 920M | 25.3 | +5% |
| GeForce GT 640M | 24.1 | |
| Radeon R5 M255 | 21 | -13% |
| Radeon R7 M440 | 21 | -13% |
| Radeon R5 M430 | 19.1 | -21% |
| Radeon R7 M340 | 18 | -25% |
Compare Cost Per Frame
The average cost per frame in can be compared to similar GPUs to assess relative value. Generally, a lower cost per frame implies better value for your money.
Choose Baseline GPU:GeForce GT 640M orGeForce GTX 660 Ti
| GPU | Cost Per Frame | |
|---|---|---|
| Our database does not have enough data to compare the FPS per dollar with other GPUs. | ||
Benchmark Performance
#
Performance
GeForce GT 640M
1,7282% of 104,598
GeForce GTX 660 Ti387% better
8,4158% of 104,598
The GeForce GTX 660 Ti has 387% better performance than the GeForce GT 640M for the 3DMark 11 Performance GPU benchmark.
The GeForce GT 640M is ranked 386th with a score of 1,728, and the GeForce GTX 660 Ti is ranked 197th with a score of 8,415.
Performance per dollar
GeForce GT 640M
No data available
GeForce GTX 660 Ti
28.1417% of 161.45
The GeForce GTX 660 Ti has 43% of the performance per dollar compared to the leader for the 3DMark 11 Performance GPU benchmark: NVIDIA GeForce RTX 4090.
GeForce GTX 660 Ti's 28.14 performance per dollar ranks it 0th among the other benchmarked GPUs in our database.
Relative Performance
The average score in the benchmark test can be compared to similar GPUs to assess relative performance. Generally, powerful GPUs tend to have higher scores.
Choose Baseline GPU:GeForce GT 640M or
| GPU | Benchmark Performance | |
|---|---|---|
| GeForce GTX 1050 | 8,571 | +396% |
| Radeon R7 370 | 8,518.5 | +393% |
| GeForce GTX 660 Ti | 8,415 | +387% |
| GeForce GTX 950 | 8,351 | +383% |
| GeForce GTX 760 | 7,962 | +361% |
| Radeon R5 M255 | 1,784 | +3% |
| GeForce 825M | 1,756.5 | +2% |
| GeForce GT 640M | 1,728 | |
| FirePro M4100 | 1,728 | 0% |
| GeForce GT 730M | 1,722 | -0% |
Relative Value For Money
The average performance per dollar in the benchmark test can be compared to similar GPUs to assess relative value. A higher score implies a better value for your money.
Choose Baseline GPU:GeForce GT 640M orGeForce GTX 660 Ti
| GPU | Performance Per Dollar | |
|---|---|---|
| Radeon R9 280X | 36.09 | +28% |
| GeForce GTX 980 | 32.07 | +14% |
| GeForce GTX 760 | 31.98 | +14% |
| Radeon R9 FURY | 31.95 | +14% |
| Radeon R9 290X | 29.45 | +5% |
| GeForce GTX 660 Ti | 28.14 | |
| Radeon R9 Nano | 26.63 | -5% |
| GeForce GTX 780 Ti | 22.34 | -21% |
| GeForce GTX 680 | 20.47 | -27% |
| Radeon HD 7770 (GHz Edition) | 19.48 | -31% |
Benchmark Scores
This table showcases the average performance scores achieved by both GPUs across industry-standard benchmark tests. These scores provide a valuable insight into overall performance. Powerful GPUs tend to have higher scores.
- Popular
| Benchmark | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| 3DMark Cloud Gate Graphics | 9,024 | 37,758 (+318.42%) |
| 3DMark Fire Strike Standard Graphics | 1,225 | 5,432 (+343.43%) |
| 3DMark 11 Performance Score | 1,860.5 | 7,693 (+313.49%) |
| Cinebench R15 OpenGL 64 Bit | 42.4 | -- |
| PassMark G3D Mark | 927 | 4,429 (+377.78%) |
| PassMark G2D Mark | 197 | 467 (+137.06%) |
| Unigine Heaven 3.0 DirectX 11 | -- | 78.7 |
Benchmarks Source: Notebookcheck
Technical Specs
#
Graphics Processor
General information about the graphics processing unit like their architecture, manufacturing process size, and transistor count. Newer GPU architectures generally bring efficiency improvements and may introduce technologies that enhance graphical capabilities.
| Spec | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| Codename | GK107 | GK104 |
| Architecture | Kepler | Kepler |
| Process Size | 28 nm | 28 nm |
| Transistors | 1,270 million | 3,540 million |
Memory Details
Memory specifications like their capacity, bandwidth, and clock speeds. GPU memory stores graphics data like frames, textures, and shadows which helps display rendered images. These specs are crucial for graphics-intense applications like gaming and 3D modeling.
| Spec | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| Memory Size | 2 GB | 2 GB |
| Memory Type | DDR3 | GDDR5 |
| Memory Bandwidth | 28.8 Gb/s | 144.2 Gb/s |
| Memory Clock | 900 MHz | 1,502 MHz |
| Memory Interface | 128 bit | 192 bit |
| L1 Cache | 16 KB | 16 KB |
| L2 Cache | 256 KB | 384 KB |
Board Compatibility
Compatibility information like their slot size, bus interface, power consumption, and display support. These specs are useful for verifying compatibility with your motherboard, power supply, and monitor.
| Spec | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| Slots | -- | 2 slots |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Thermal Design Power (TDP) | 32 W | 150 W |
| Suggested PSU | -- | 450 W |
| Power Connectors | -- | 2x 6-pin |
| Outputs | Device Dependent | DVI, HDMI 1.4a, DisplayPort 1.2 |
Cores & Clock Speeds
Processing power information like its cores and clock speed. These specs impact how fast they can process graphics. Each type of core or component serves a specific computational purpose.
| Spec | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| CUDA Cores | 384 | 1,344 |
| Stream Multiprocessors (SM) | 2 | 7 |
| Texture Mapping Units (TMU) | 32 | 112 |
| Render Output Units (ROP) | 16 | 24 |
| Core Clock Speed | 624 MHz | 915 MHz |
| Core Clock Speed (Boost) | 709 MHz | 980 MHz |
Theoretical Performance
Theoretical performance numbers derived from the raw specifications of the different components like core count and clock speeds. While these provide a glimpse into peak processing power, they do not represent real-world performance.
| Spec | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| Pixel Fill Rate | 5.67 GPixel/s | 27.44 GPixel/s |
| Texture Fill Rate | 22.69 GTexel/s | 109.8 GTexel/s |
| FP32 Performance | 544.5 GFLOPS | 2.63 TFLOPS |
| FP64 Performance | 22.69 GFLOPS | 109.8 GFLOPS |
API Support
Graphics API versions supported by these graphics cards. APIs evolve over time, introducing new features and functionalities. Older GPUs may not support recent versions.
| Spec | GeForce GT 640M | GeForce GTX 660 Ti |
|---|---|---|
| DirectX | 12 (11_0) | 12 (11_0) |
| OpenCL | 3.0 | 3.0 |
| OpenGL | 4.6 | 4.6 |
| Shader Model | 6.5 (5.1) | 6.5 (5.1) |
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* Performance rating, performance per dollar, and rankings are based on the 3DMark 11 Performance GPU benchmark and MSRP.