Radeon RX 6600 LE vs GeForce GT 640 OEM
Aggregate performance score
We've compared GeForce GT 640 OEM and Radeon RX 6600 LE, covering specs and all relevant benchmarks.
6600 LE outperforms 640 OEM by a whopping 2079% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1011 | 171 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.37 | 19.57 |
| Architecture | Kepler (2012−2018) | RDNA 2.0 (2020−2025) |
| GPU code name | GK107 | Navi 23 |
| Market segment | Desktop | Desktop |
| Release date | 24 April 2012 (14 years ago) | 8 December 2023 (2 years ago) |
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 1792 |
| Core clock speed | 797 MHz | 1626 MHz |
| Boost clock speed | no data | 2495 MHz |
| Number of transistors | 1,270 million | 11,060 million |
| Manufacturing process technology | 28 nm | 7 nm |
| Power consumption (TDP) | 50 Watt | 132 Watt |
| Texture fill rate | 25.50 | 279.4 |
| Floating-point processing power | 0.6121 TFLOPS | 8.942 TFLOPS |
| ROPs | 16 | 64 |
| TMUs | 32 | 112 |
| Ray Tracing Cores | no data | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | 32 KB | 512 KB |
| L2 Cache | 256 KB | 2 MB |
| L3 Cache | no data | 32 MB |
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 x8 |
| Length | 145 mm | 190 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | None | 1x 8-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 | GDDR6 |
| Maximum RAM amount | 2 GB | 8 GB |
| Memory bus width | 128 Bit | 128 Bit |
| Memory clock speed | 891 MHz | 1750 MHz |
| Memory bandwidth | 28.51 GB/s | 224.0 GB/s |
| Resizable BAR | - | + |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | 1x DVI, 1x HDMI, 1x DisplayPort | 1x HDMI 2.1, 3x DisplayPort 1.4a |
| HDMI | + | + |
API and SDK support
List of supported 3D 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 | 2.1 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.0 | - |
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 | 1.54 | 33.55 |
| Recency | 24 April 2012 | 8 December 2023 |
| Maximum RAM amount | 2 GB | 8 GB |
| Chip lithography | 28 nm | 7 nm |
| Power consumption (TDP) | 50 Watt | 132 Watt |
GT 640 OEM has 164% lower power consumption.
RX 6600 LE, on the other hand, has a 2079% higher aggregate performance score, an age advantage of 11 years, a 300% higher maximum VRAM amount, and a 300% more advanced lithography process.
The Radeon RX 6600 LE is our recommended choice as it beats the GeForce GT 640 OEM in performance tests.
Other comparisons
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