Contents:HighlightsSummaryGaming PerformanceBenchmark PerformanceTechnical SpecsRelated ComparisonsRelated GPUs
Performance
GeForce GT 645M7% better
1,844.52% of 104,598
GeForce GT 640M
1,7282% of 104,598
The GeForce GT 645M has 7% better performance than the GeForce GT 640M for the 3DMark 11 Performance GPU benchmark.
Performance per dollar
GeForce GT 645M
No data available
GeForce GT 640M
No data available
We do not have any performance per dollar data for the GeForce GT 645M and the GeForce GT 640M for the 3DMark 11 Performance GPU benchmark.
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Summary
#
About the NVIDIA GeForce GT 645M GPU
The NVIDIA GeForce GT 645M is an end-of-life mobile graphics card that released in Q4 2012. It is built on the Kepler GPU microarchitecture (codename GK107) and is manufactured on a 28 nm process.
Memory
The GT 645M 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 645M includes 384 CUDA cores, the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 709 MHz and can dynamically boost its clock speed up to 780 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 645M has the 372nd best 3DMark 11 Performance GPU score among the 543 benchmarked GPUs in our database. It achieves 1.76% of the performance of the best benchmarked GPU, the NVIDIA GeForce RTX 4090.
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.
General Info
General overview of the GPU, including details like its manufacturer, release date, launch price, and current production status.
| Info | GeForce GT 645M | GeForce GT 640M |
|---|---|---|
| Manufacturer | NVIDIA | NVIDIA |
| Architecture | Kepler | Kepler |
| Market Segment | Mobile | Mobile |
| Release Date | Q4 2012 | Q1 2012 |
| 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 645M | GeForce GT 640M |
|---|---|---|
| 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 645M orGeForce GT 640M
| 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 645M orGeForce GT 640M
| 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 645M7% better
1,844.52% of 104,598
GeForce GT 640M
1,7282% of 104,598
The GeForce GT 645M has 7% better performance than the GeForce GT 640M for the 3DMark 11 Performance GPU benchmark.
The GeForce GT 645M is ranked 372nd with a score of 1,844.5, and the GeForce GT 640M is ranked 386th with a score of 1,728.
Performance per dollar
GeForce GT 645M
No data available
GeForce GT 640M
No data available
We do not have any performance per dollar data for the GeForce GT 645M and the GeForce GT 640M for the 3DMark 11 Performance GPU benchmark.
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 645M or
| GPU | Benchmark Performance | |
|---|---|---|
| Radeon R7 M270 | 1,857.5 | +1% |
| GeForce GT 740M | 1,848 | +0% |
| GeForce GT 645M | 1,844.5 | |
| GeForce 920MX | 1,835 | -1% |
| Quadro K1100M | 1,826.5 | -1% |
| Radeon R5 M255 | 1,784 | -3% |
| GeForce 825M | 1,756.5 | -5% |
| GeForce GT 640M | 1,728 | -6% |
| FirePro M4100 | 1,728 | -6% |
| GeForce GT 730M | 1,722 | -7% |
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 645M orGeForce GT 640M
| GPU | Performance Per Dollar | ||
|---|---|---|---|
| Our database does not have enough data to compare the benchmark performance per dollar with other GPUs. | |||
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 645M | GeForce GT 640M |
|---|---|---|
| 3DMark Cloud Gate Graphics | 8,654.5 | 9,024 (+4.27%) |
| 3DMark Fire Strike Standard Graphics | 1,151.5 | 1,225 (+6.38%) |
| 3DMark 11 Performance Score | 1,962.5 (+5.48%) | 1,860.5 |
| Cinebench R15 OpenGL 64 Bit | -- | 42.4 |
| PassMark G3D Mark | 934 (+0.76%) | 927 |
| PassMark G2D Mark | 158 | 197 (+24.68%) |
| Unigine Heaven 3.0 DirectX 11 | 17.7 | -- |
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 645M | GeForce GT 640M |
|---|---|---|
| Codename | GK107 | GK107 |
| Architecture | Kepler | Kepler |
| Process Size | 28 nm | 28 nm |
| Transistors | 1,270 million | 1,270 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 645M | GeForce GT 640M |
|---|---|---|
| Memory Size | 2 GB | 2 GB |
| Memory Type | DDR3 | DDR3 |
| Memory Bandwidth | 28.8 Gb/s | 28.8 Gb/s |
| Memory Clock | 900 MHz | 900 MHz |
| Memory Interface | 128 bit | 128 bit |
| L1 Cache | 16 KB | 16 KB |
| L2 Cache | 256 KB | 256 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 645M | GeForce GT 640M |
|---|---|---|
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Thermal Design Power (TDP) | 32 W | 32 W |
| Outputs | Device Dependent | Device Dependent |
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 645M | GeForce GT 640M |
|---|---|---|
| CUDA Cores | 384 | 384 |
| Stream Multiprocessors (SM) | 2 | 2 |
| Texture Mapping Units (TMU) | 32 | 32 |
| Render Output Units (ROP) | 16 | 16 |
| Core Clock Speed | 709 MHz | 624 MHz |
| Core Clock Speed (Boost) | 780 MHz | 709 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 645M | GeForce GT 640M |
|---|---|---|
| Pixel Fill Rate | 6.24 GPixel/s | 5.67 GPixel/s |
| Texture Fill Rate | 24.96 GTexel/s | 22.69 GTexel/s |
| FP32 Performance | 599 GFLOPS | 544.5 GFLOPS |
| FP64 Performance | 24.96 GFLOPS | 22.69 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 645M | GeForce GT 640M |
|---|---|---|
| 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.