GeForce GT 640: specs and benchmarks
Aggregated performance score
It provides poor gaming and benchmark performance at 3.04% of a leader's which is NVIDIA GeForce RTX 4090.
Summary
NVIDIA started GeForce GT 640 sales 5 June 2012 at a recommended price of $99 . This is a Kepler architecture desktop card based on 28 nm manufacturing process and primarily aimed at office use. 2 GB of DDR3 memory clocked at 1.78 GHz are supplied, and together with 128 Bit memory interface this creates a bandwidth of 28.51 GB/s.
Compatibility-wise, this is single-slot card attached via PCIe 3.0 x16 interface. Its manufacturer default version has a length of 145 mm. No additional power connector is required, and power consumption is at 65 Watt.
General info
Some basic facts about GeForce GT 640: architecture, market segment, release date etc.
| Place in performance ranking | 726 | |
| Place by popularity | not in top-100 | |
| Value for money | 0.20 | |
| Architecture | Kepler (2012−2018) | |
| GPU code name | GK107 | |
| Market segment | Desktop | |
| Release date | 5 June 2012 (11 years old) | |
| Launch price (MSRP) | $99 | |
| Current price | $157 (1.6x MSRP) | of 168889 (A100 PCIe 80 GB) |
Value for money
Performance to price ratio. The higher, the better.
Technical specs
GeForce GT 640's specs such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce GT 640's performance, but for precise assessment you have to consider its benchmark and gaming test results.
| Pipelines / CUDA cores | 384 | of 20480 (Data Center GPU Max NEXT) |
| Core clock speed | 902 MHz | of 2610 (Radeon RX 6500 XT) |
| Number of transistors | 1,270 million | of 14400 (GeForce GTX 1080 SLI Mobile) |
| Manufacturing process technology | 28 nm | of 4 (H100 PCIe) |
| Power consumption (TDP) | 65 Watt | of 2400 (Data Center GPU Max Subsystem) |
| Texture fill rate | 28.86 | of 969.9 (H100 SXM5 96 GB) |
| Floating-point performance | 692.7 gflops | of 16384 (Radeon Pro Duo) |
Size and compatibility
This section provides details about the physical dimensions of GeForce GT 640 and its compatibility with other computer components. This information is useful when selecting a computer configuration or upgrading an existing one. For desktop graphics cards, it includes details about the interface and bus (for motherboard compatibility) and additional power connectors (for power supply compatibility).
| Interface | PCIe 3.0 x16 | |
| Length | 145 mm | |
| Width | 1-slot | |
| Supplementary power connectors | None |
Memory
Parameters of memory installed on GeForce GT 640: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated memory and use a shared part of system RAM instead.
| Memory type | DDR3 | |
| Maximum RAM amount | 2 GB | of 192 (Radeon Instinct MI300X) |
| Memory bus width | 128 Bit | of 8192 (Radeon Instinct MI250X) |
| Memory clock speed | 1782 MHz | of 23000 (GeForce RTX 4080 SUPER) |
| Memory bandwidth | 28.51 GB/s | of 3276 (Aldebaran) |
Video outputs and ports
Types and number of video connectors present on GeForce GT 640. As a rule, this section is relevant only for desktop reference graphics cards, since for notebook ones the availability of certain video outputs depends on the laptop model, while non-reference desktop models can (though not necessarily will) bear a different set of video ports.
| Display Connectors | 1x DVI, 1x HDMI, 1x DisplayPort | |
| HDMI | + |
API support
APIs supported by GeForce GT 640, sometimes including their particular versions.
| DirectX | 12 (11_0) | |
| Shader Model | 5.1 | |
| OpenGL | 4.6 | |
| OpenCL | 1.2 | |
| Vulkan | 1.1.126 | |
| CUDA | 3.0 |
Benchmark performance
Synthetic benchmark performance of GeForce GT 640. The combined score is measured on a 0-100 point scale.
Combined synthetic benchmark score
This is our combined benchmark performance 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, part of Passmark PerformanceTest suite. 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.
Benchmark coverage: 25%
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.
Benchmark coverage: 14%
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.
Benchmark coverage: 9%
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.
Benchmark coverage: 5%
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.
Benchmark coverage: 4%
Octane Render OctaneBench
This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.
Benchmark coverage: 4%
Send your test results of GeForce GT 640.
AMD equivalent
According to our data, the closest AMD alternative to GeForce GT 640 is Radeon R7 512 Cores (Kaveri Desktop), which is nearly equal in speed and higher by 1 position in our ranking.
Here are some closest AMD rivals to GeForce GT 640:
Similar GPUs
Here is our recommendation of several graphics cards that are more or less close in performance to the one reviewed.
Recommended processors
These processors are most commonly used with GeForce GT 640 according to our statistics.
