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NVIDIA GeForce GT 640 OEM Rebrand
- Graphics Processor
- GF116
- Cores
- 144
- TMUs
- 24
- ROPs
- 24
- Memory Size
- 1536 MB
- Memory Type
- DDR3
- Bus Width
- 192 bit
GPU
Recommended Gaming Resolutions:
- 1280x720
- 1366x768
- 1600x900
The GeForce GT 640 OEM Rebrand was a graphics card by NVIDIA, launched on April 24th, 2012. Built on the 40 nm process, and based on the GF116 graphics processor, in its GF116-150-A1 variant, the card supports DirectX 12. Even though it supports DirectX 12, the feature level is only 11_0, which can be problematic with newer DirectX 12 titles. The GF116 graphics processor is an average sized chip with a die area of 238 mm² and 1,170 million transistors. Unlike the fully unlocked GeForce GTX 550 Ti, which uses the same GPU but has all 192 shaders enabled, NVIDIA has disabled some shading units on the GeForce GT 640 OEM Rebrand to reach the product's target shader count. It features 144 shading units, 24 texture mapping units, and 24 ROPs. NVIDIA has paired 1,536 MB DDR3 memory with the GeForce GT 640 OEM Rebrand, which are connected using a 192-bit memory interface. The GPU is operating at a frequency of 720 MHz, memory is running at 800 MHz.
Being a single-slot card, the NVIDIA GeForce GT 640 OEM Rebrand does not require any additional power connector, its power draw is rated at 75 W maximum. Display outputs include: 2x DVI, 1x mini-HDMI 1.3a. GeForce GT 640 OEM Rebrand is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 145 mm in length, and features a single-slot cooling solution.
Being a single-slot card, the NVIDIA GeForce GT 640 OEM Rebrand does not require any additional power connector, its power draw is rated at 75 W maximum. Display outputs include: 2x DVI, 1x mini-HDMI 1.3a. GeForce GT 640 OEM Rebrand is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 145 mm in length, and features a single-slot cooling solution.
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 2.0 x16
Relative Performance
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.
Clock Speeds
- GPU Clock
- 720 MHz
- Shader Clock
- 1440 MHz
- Memory Clock
-
800 MHz
1600 Mbps effective
Memory
- Memory Size
- 1536 MB
- Memory Type
- DDR3
- Memory Bus
- 192 bit
- Bandwidth
- 38.40 GB/s
Render Config
- Shading Units
- 144
- TMUs
- 24
- ROPs
- 24
- SM Count
- 3
- L1 Cache
- 64 KB (per SM)
- L2 Cache
- 384 KB
Theoretical Performance
- Pixel Rate
- 4.320 GPixel/s
- Texture Rate
- 17.28 GTexel/s
- FP32 (float)
- 414.7 GFLOPS
- FP64 (double)
- 34.56 GFLOPS (1:12)
Board Design
- Slot Width
- Single-slot
- Length
- 145 mm
5.7 inches
- TDP
- 75 W
- Suggested PSU
- 250 W
- Outputs
- 2x DVI
1x mini-HDMI 1.3a
- Power Connectors
- None
- Board Number
- P1062 SKU 16,
P1062 SKU 17,
P1062 SKU 18
Graphics Features
- DirectX
- 12 (11_0)
- OpenGL
- 4.6
- OpenCL
- 1.1
- Vulkan
- N/A
- CUDA
- 2.1
- Shader Model
- 5.1
GF116 GPU Notes
| PureVideo HD: VP4 VDPAU: Feature Set C Latest Drivers: Windows XP / Server 2003 x64: GeForce Release 368.81 Windows Vista: GeForce Release 365.19 Windows 7 / 8 / 8.1 / 10: GeForce Release 391.35 |
Retail boards based on this design (1)
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| 720 MHz | 800 MHz | 3 GB, 1x DVI 1x HDMI 1x DisplayPort |
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