NVIDIA GeForce GT 640 Rev. 2: GPU Specs & Benchmarks
The GeForce GT 640 Rev. 2 is a graphics card by NVIDIA, built on the 28 nm process and based on the GK208 graphics processor (GPU). The video card specifications and performance tests (benchmarks) are listed below.
Recommended Gaming Resolutions 640x480 1280x720 1366x768 1600x900 1920x1080 2560x1440 3840x2160
Graphics Processor (GPU)
- GPU Name
- GK208
- Model number
- GK208-400-A1
- Architecture
- Kepler 2.0
- Foundry
- TSMC
- Process Size
- 28 nm
- Transistors
- 1,020 million
- Die Size
- 87 mm²
Graphics Card
- Release Date
- May 29th, 2013
- Family
- GeForce 600
- Production
- End-of-life
- Launch Price
- 89 USD
- Predecessor
- GeForce 500
- Bus Interface
- PCIe 2.0 x8
Memory
- Memory Size
- 1024 MB
- Memory Type
- GDDR5
- Memory Bus
- 64 bit
- Bandwidth
- 40.06 GB/s
Performance
- Pixel fillrate
- 8.368 GPixel/s
- Texture fillrate
- 33.47 GTexel/s
- FP32 (float) performance
- 803.3 GFLOPS
- FP64 (double) performance
- 33.47 GFLOPS (1:24)
Clock Speeds
- Memory Clock
- 1252 MHz
5 Gbps effective - GPU Clock
- 1046 MHz
Render Config
- Shading Units
- 384
- TMUs
- 32
- ROPs
- 8
- L1 Cache
- 16 KB (per SMX)
- L2 Cache
- 512 KB
Board Design
- Slot Width
- Single-slot
- Length
- 145 mm
5.7 inches - Thermal design power (TDP)
- 49 W
- Suggested PSU
- 200 W
- Display Connectors
- 1x DVI
1x HDMI
1x VGA - Power Connectors
- None
- Board Number
- P2131
API support
- DirectX
- 12 (11_0)
- OpenGL
- 4.6
- OpenCL
- 3.0
- Vulkan
- 1.1
- Shader Model
- 5.1
- CUDA
- 3.5
