Contents:HighlightsSummaryGaming PerformanceBenchmark PerformanceTechnical SpecsRelated ComparisonsRelated GPUs
Performance
GeForce GT 645M
1,844.52% of 104,598
Radeon R9 M27577% better
3,2613% of 104,598
The Radeon R9 M275 has 77% better performance than the GeForce GT 645M for the 3DMark 11 Performance GPU benchmark.
Performance per dollar
GeForce GT 645M
No data available
Radeon R9 M275
No data available
We do not have any performance per dollar data for the GeForce GT 645M and the Radeon R9 M275 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 AMD Radeon R9 M275 GPU
The AMD Radeon R9 M275 is an end-of-life mobile graphics card that released in Q1 2014. It is built on the GCN 1.0 GPU microarchitecture (codename Venus) and is manufactured on a 28 nm process.
Memory
The R9 M275 has 2 GB of GDDR5 memory, with a 1,000 MHz memory clock and a 128 bit interface. This gives it a memory bandwidth of 64 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 R9 M275 includes 640 stream processors (SPs), the processing units for handling parallel computing tasks. The GPU operates at a core clock speed of 900 MHz and can dynamically boost its clock speed up to 925 MHz. Complementing the processing units are 40 texture mapping units (TMUs) for efficient texture filtering and 16 render output units (ROPs) for pixel processing.
Benchmark Performance
The R9 M275 has the 290th best 3DMark 11 Performance GPU score among the 543 benchmarked GPUs in our database. It achieves 3.12% 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 | Radeon R9 M275 |
|---|---|---|
| Manufacturer | NVIDIA | AMD |
| Architecture | Kepler | GCN 1.0 |
| Market Segment | Mobile | Mobile |
| Release Date | Q4 2012 | Q1 2014 |
| Production Status | End-of-life | End-of-life |
| Shop | Check Price | Check Price |
Gaming Performance
#
Select a game to compare FPS metrics
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
BioShock Infinite | GeForce GT 645M | Radeon R9 M275 |
|---|---|---|
| Low - 720p | 84 FPS | 88 FPS(+5.13%) |
| Medium - 768p | 47 FPS | 52 FPS(+10.87%) |
| High - 768p | 40 FPS | 43 FPS(+6.2%) |
| Ultra - 1080p | 14 FPS | 14 FPS(+0.7%) |
| 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 or
| GPU | Frames Per Second | |
|---|---|---|
| Quadro K620M | 15 | +5% |
| GeForce 920MX | 15 | +5% |
| FirePro W4190M | 15 | +5% |
| Radeon R9 M275 | 14.4 | +1% |
| GeForce GT 645M | 14.3 | |
| GeForce GT 640M | 14.3 | +0% |
| Quadro M500M | 14 | -2% |
| GeForce 840M | 14 | -2% |
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 orRadeon R9 M275
| 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 645M
1,844.52% of 104,598
Radeon R9 M27577% better
3,2613% of 104,598
The Radeon R9 M275 has 77% better performance than the GeForce GT 645M for the 3DMark 11 Performance GPU benchmark.
The GeForce GT 645M is ranked 372nd with a score of 1,844.5, and the Radeon R9 M275 is ranked 290th with a score of 3,261.
Performance per dollar
GeForce GT 645M
No data available
Radeon R9 M275
No data available
We do not have any performance per dollar data for the GeForce GT 645M and the Radeon R9 M275 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 R9 M375 | 3,314 | +80% |
| GeForce 945M | 3,309.5 | +79% |
| Radeon R9 M275 | 3,261 | +77% |
| Radeon HD 6990M | 3,227 | +75% |
| GeForce GTX 675M | 3,218 | +74% |
| 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% |
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 orRadeon R9 M275
| 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 | Radeon R9 M275 |
|---|---|---|
| 3DMark Cloud Gate Graphics | 8,654.5 | 11,459 (+32.41%) |
| 3DMark Fire Strike Standard Graphics | 1,151.5 | 1,885 (+63.7%) |
| 3DMark 11 Performance Score | 1,962.5 | 3,182 (+62.14%) |
| Cinebench R15 OpenGL 64 Bit | -- | 50.5 |
| PassMark G3D Mark | 934 | 1,115 (+19.38%) |
| PassMark G2D Mark | 158 | 561 (+255.06%) |
| 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 | Radeon R9 M275 |
|---|---|---|
| Codename | GK107 | Venus |
| Architecture | Kepler | GCN 1.0 |
| Process Size | 28 nm | 28 nm |
| Transistors | 1,270 million | 1,500 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 | Radeon R9 M275 |
|---|---|---|
| Memory Size | 2 GB | 2 GB |
| Memory Type | DDR3 | GDDR5 |
| Memory Bandwidth | 28.8 Gb/s | 64 Gb/s |
| Memory Clock | 900 MHz | 1,000 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 | Radeon R9 M275 |
|---|---|---|
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Thermal Design Power (TDP) | 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 | Radeon R9 M275 |
|---|---|---|
| Stream Processors (SP) | -- | 640 |
| CUDA Cores | 384 | -- |
| Compute Units (CU) | -- | 10 |
| Stream Multiprocessors (SM) | 2 | -- |
| Texture Mapping Units (TMU) | 32 | 40 |
| Render Output Units (ROP) | 16 | 16 |
| Core Clock Speed | 709 MHz | 900 MHz |
| Core Clock Speed (Boost) | 780 MHz | 925 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 | Radeon R9 M275 |
|---|---|---|
| Pixel Fill Rate | 6.24 GPixel/s | 14.8 GPixel/s |
| Texture Fill Rate | 24.96 GTexel/s | 37 GTexel/s |
| FP32 Performance | 599 GFLOPS | 1,184 GFLOPS |
| FP64 Performance | 24.96 GFLOPS | 74 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 | Radeon R9 M275 |
|---|---|---|
| DirectX | 12 (11_0) | 12 (11_1) |
| OpenCL | 3.0 | 2.1 (1.2) |
| 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.