Radeon RX 8800 XT vs GeForce GT 640 OEM
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1004 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 2.38 | no data |
| Architecture | Kepler (2012−2018) | RDNA 4.0 (2025) |
| GPU code name | GK107 | Navi 48 |
| Market segment | Desktop | Desktop |
| Release date | 24 April 2012 (13 years ago) | no data |
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 | 4096 |
| Core clock speed | 797 MHz | 1295 MHz |
| Boost clock speed | no data | 2430 MHz |
| Number of transistors | 1,270 million | no data |
| Manufacturing process technology | 28 nm | 4 nm |
| Power consumption (TDP) | 50 Watt | 220 Watt |
| Texture fill rate | 25.50 | 622.1 |
| Floating-point processing power | 0.6121 TFLOPS | 19.91 TFLOPS |
| ROPs | 16 | 96 |
| TMUs | 32 | 256 |
| Ray Tracing Cores | no data | 64 |
| L0 Cache | no data | 1 MB |
| L1 Cache | 32 KB | 768 KB |
| L2 Cache | 256 KB | 4 MB |
| L3 Cache | no data | 64 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 x16 |
| Length | 145 mm | 267 mm |
| Width | 1-slot | 2-slot |
| Supplementary power connectors | None | 2x 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 | 16 GB |
| Memory bus width | 128 Bit | 256 Bit |
| Memory clock speed | 891 MHz | 2438 MHz |
| Memory bandwidth | 28.51 GB/s | 624.1 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 2.1a, 3x DisplayPort 2.1 |
| 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 | 6.8 |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 2.2 |
| Vulkan | 1.1.126 | 1.3 |
| CUDA | 3.0 | - |
Pros & cons summary
| Maximum RAM amount | 2 GB | 16 GB |
| Chip lithography | 28 nm | 4 nm |
| Power consumption (TDP) | 50 Watt | 220 Watt |
GT 640 OEM has 340% lower power consumption.
RX 8800 XT, on the other hand, has a 700% higher maximum VRAM amount, and a 600% more advanced lithography process.
We couldn't decide between GeForce GT 640 OEM and Radeon RX 8800 XT. We've got no test results to judge.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
