NVIDIA GeForce GT 640 OEM 1 GB
- Graphics Processor
- GK107
- Cores
- 384
- TMUs
- 32
- ROPs
- 16
- Memory Size
- 1024 MB
- Memory Type
- GDDR5
- Bus Width
- 128 bit
Graphics Processor
Graphics Card
- Release Date
- Apr 24th, 2012
- Generation
- GeForce 600
- Predecessor
- GeForce 500
- Successor
- GeForce 700
- Production
- End-of-life
- Bus Interface
- PCIe 3.0 x16
Clock Speeds
- GPU Clock
797 MHz
954 MHz (+20%)
- Memory Clock
-
891 MHz
1250 MHz (+40%)
1782 Mbps effective
5 Gbps effective
Memory
- Memory Size
-
2 GB
1024 MB
- Memory Type
DDR3
GDDR5
- Memory Bus
- 128 bit
- Bandwidth
-
28.51 GB/s
80.00 GB/s
Render Config
- Shading Units
- 384
- TMUs
- 32
- ROPs
- 16
- SMX Count
- 2
- L1 Cache
- 16 KB (per SMX)
- L2 Cache
- 256 KB
Theoretical Performance
- Pixel Rate
-
6.376 GPixel/s
7.632 GPixel/s
- Texture Rate
-
25.50 GTexel/s
30.53 GTexel/s
- FP32 (float) performance
-
612.1 GFLOPS
732.7 GFLOPS
- FP64 (double) performance
-
25.50 GFLOPS
30.53 GFLOPS (1:24)
Board Design
- Slot Width
- Single-slot
- TDP
- 50 W
- Suggested PSU
- 250 W
- Outputs
- 1x DVI
1x HDMI
1x DisplayPort
- Power Connectors
- None
- Board Number
- P2010
Graphics Features
- DirectX
- 12 (11_0)
- OpenGL
- 4.6
- OpenCL
- 1.2
- Vulkan
- 1.1
- CUDA
- 3.0
- Shader Model
- 5.1
Card Notes
| Variant Memory: 4096MB DDR3 Variant Memory: 1024MB GDDR5 |
GK107 GPU Notes
| L1 Cache is configurable from 16 KB up to 48 KB per SMX |
Other retail boards based on this design (3)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
ASUS GT 640 4 GB
|
797 MHz | 891 MHz | 4 GB |
NVIDIA GeForce GT 640 OEM 1 GB
|
954 MHz | 1250 MHz | 1024 MB, GDDR5 |
NVIDIA GeForce GT 640 OEM 2 GB
|
797 MHz | 891 MHz |