GeForce RTX 4090 D vs GT 640 OEM
Aggregate performance score
We've compared GeForce GT 640 OEM and GeForce RTX 4090 D, covering specs and all relevant benchmarks.
RTX 4090 D outperforms GT 640 OEM by a whopping 5666% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in performance ranking | 892 | 2 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 9.29 |
| Architecture | Kepler (2012−2018) | Ada Lovelace |
| GPU code name | GK107 | AD102 |
| Market segment | Desktop | Desktop |
| Release date | 24 April 2012 (12 years ago) | 28 December 2023 (less than a year ago) |
| Launch price (MSRP) | no data | $1,599 |
| Current price | $99 | $2537 (1.6x MSRP) |
Cost-effectiveness evaluation
Performance to price ratio. The higher, the better.
Detailed specifications
General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 14592 |
| Core clock speed | 797 MHz | no data |
| Boost clock speed | no data | 2520 MHz |
| Number of transistors | 1,270 million | 76,300 million |
| Manufacturing process technology | 28 nm | 5 nm |
| Power consumption (TDP) | 50 Watt | 425 Watt |
| Texture fill rate | 25.50 | 1,149 |
| Floating-point performance | 612.1 gflops | no data |
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 4.0 x16 |
| Length | 145 mm | 304 mm |
| Width | 1-slot | 3-slot |
| Supplementary power connectors | None | 1x 16-pin |
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 | DDR3 | GDDR6X |
| Maximum RAM amount | 2 GB | 24 GB |
| Memory bus width | 128 Bit | 384 Bit |
| Memory clock speed | 1782 MHz | 21 GB/s |
| Memory bandwidth | 28.51 GB/s | 1,008 GB/s |
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 HDMI 2.1, 3x DisplayPort 1.4a |
| HDMI | + | + |
API compatibility
List of supported graphics and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.1 | 6.7 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.0 | 8.9 |
Gaming performance
Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.
Pros & cons summary
| Performance score | 1.69 | 97.44 |
| Recency | 24 April 2012 | 28 December 2023 |
| Maximum RAM amount | 2 GB | 24 GB |
| Chip lithography | 28 nm | 5 nm |
| Power consumption (TDP) | 50 Watt | 425 Watt |
The GeForce RTX 4090 D is our recommended choice as it beats the GeForce GT 640 OEM 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
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