Gigabyte GeForce RTX 2080 Ti WindForce OC vs Zotac GeForce GT 640 1GB
VS
Gigabyte GeForce RTX 2080 Ti WindForce OC
Zotac GeForce GT 640 1GB
Key Differences
Performance
Features
Miscellaneous
Ports
General info
Memory
Gigabyte GeForce RTX 2080 Ti WindForce OC
Zotac GeForce GT 640 1GB
Key Differences
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| GPU Base Clock Speed | 1350MHz | 1046MHz |
| GPU Boost Clock Speed | 1620MHz | Not Known |
| Pixel Rate | 142.6 GPixel/s | 7.22 GPixel/s |
| GPU Memory Speed | 1750MHz | 1250MHz |
| GPU Render Output Units (ROPs) | 88 | 16 |
| No. of Supported Displays | 4 | Not Known |
Performance
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| GPU Base Clock Speed | 1350MHz | 1046MHz |
| Pixel Rate | 142.6 GPixel/s | 7.22 GPixel/s |
| FLOPS (Floating-point Performance) | 14.1 TFLOPS | 0.69 TFLOPS |
| GPU Memory Speed | 1750MHz | 1250MHz |
| Texture Filter Rate | 440.6 GTexels/s | 28.8 GTexels/s |
| Total GPU Shading Units | 4352 | 384 |
| Total GPU TMUs | 272 | 32 |
| GPU Boost Clock Speed | 1620MHz | Not Known |
| GPU Render Output Units (ROPs) | 88 | 16 |
| DPFP (Double Precision Floating Point) Support |  No
|
No
|
Features
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| DirectX Version Info | 12 | 11 |
| OpenGL Driver Version | 4.5 | 4.3 |
| OpenCL Driver Version | 2 | 1.1 |
| Multi-display Tech Support |  Yes
|
Yes
|
| 3D Support | Yes
|
Yes
|
| Multi-GPU Support Count | 2 | Not Known |
| No. of Supported Displays | 4 | Not Known |
| Ray Tracing Support | No
|
No
|
Miscellaneous
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| No. of USB Ports | 1 | No Data Found |
| USB Type-C Support | Yes
|
No Data Found |
Ports
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| HDMI Output Support | Yes
|
Yes
|
| GPU HDMI Version | 2 | Not Known |
| DisplayPort Output | 3 | 0 |
| No. of HDMI Ports | 1 | Not Known |
| DVI Output Ports | 0 | 1 |
| Mini DisplayPort Output | 0 | 0 |
General info
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| TDP (Thermal Design Point) | No Data Found | No Data Found |
| Transistor Count | 18600 million | 1270 million |
| Semiconductor Size | 12nm | 28nm |
| PCI Express Version | 3 | 3 |
| Dual-GPU Support | No
|
No
|
| Air-water Cooling Support | No
|
No
|
| Width Size | 280.35mm | 145mm |
| Height | 116.45mm | 111mm |
Memory
|
Gigabyte GeForce RTX 2080 Ti WindForce OC | Zotac GeForce GT 640 1GB |
|---|---|---|
| Effective Memory Clock | 14000MHz | 5000MHz |
| Max Memory Bandwidth | 616GB/s | 28.5GB/s |
| RAM | 11GB | 1GB |
| Memory Bus Interface Width | 352bit | 64bit |
| GDDR Memory Version | 6 | 5 |
| ECC (Error-Correcting Code) Memory Support | No
|
No
|
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