Zotac GeForce RTX 2080 Ti X-Gaming OC vs Nvidia GeForce GT 640 GDDR5
VS
Zotac GeForce RTX 2080 Ti X-Gaming OC
Nvidia GeForce GT 640 GDDR5
Key Differences
Performance
Features
Miscellaneous
Ports
General info
Memory
Zotac GeForce RTX 2080 Ti X-Gaming OC
Nvidia GeForce GT 640 GDDR5
Key Differences
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| GPU Base Clock Speed | 1350MHz | 1046MHz |
| GPU Boost Clock Speed | 1605MHz | Not Known |
| Pixel Rate | 138.6 GPixel/s | 8.37 GPixel/s |
| GPU Memory Speed | 1750MHz | 1252MHz |
| GPU Render Output Units (ROPs) | 88 | 8 |
| No. of Supported Displays | 4 | Not Known |
Performance
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| GPU Base Clock Speed | 1350MHz | 1046MHz |
| Pixel Rate | 138.6 GPixel/s | 8.37 GPixel/s |
| FLOPS (Floating-point Performance) | 13.71 TFLOPS | 0.8 TFLOPS |
| GPU Memory Speed | 1750MHz | 1252MHz |
| Texture Filter Rate | 428.4 GTexels/s | 16.7 GTexels/s |
| Total GPU Shading Units | 4352 | 384 |
| GPU Boost Clock Speed | 1605MHz | Not Known |
| GPU Render Output Units (ROPs) | 88 | 8 |
| Total GPU TMUs | Not Known | 16 |
| DPFP (Double Precision Floating Point) Support |  No
|
No
|
Features
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| DirectX Version Info | 12 | 11.1 |
| 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 |
| PassMark (G3D) Score | Not Known | 644 |
| PassMark (DirectCompute) Benchmark Result | Not Known | 1297 |
| Ray Tracing Support | No
|
No
|
Miscellaneous
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| No. of USB Ports | 1 | No Data Found |
| USB Type-C Support | Yes
|
No Data Found |
Ports
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| 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
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| TDP (Thermal Design Point) | No Data Found | No Data Found |
| Transistor Count | 18600 million | 1270 million |
| Semiconductor Size | 12nm | 28nm |
| PCI Express Version | 3 | 2 |
| Dual-GPU Support | No
|
No
|
| Air-water Cooling Support | No
|
No
|
| Width Size | 311mm | 145mm |
| Height | 115mm | 111mm |
Memory
|
Zotac GeForce RTX 2080 Ti X-Gaming OC | Nvidia GeForce GT 640 GDDR5 |
|---|---|---|
| Effective Memory Clock | 14000MHz | 5008MHz |
| Max Memory Bandwidth | 616GB/s | 40GB/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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