Zotac Gaming GeForce RTX 2080 Twin Fan vs Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
VS
Zotac Gaming GeForce RTX 2080 Twin Fan
Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
Key Differences
Performance
Features
Miscellaneous
Ports
General info
Memory
Zotac Gaming GeForce RTX 2080 Twin Fan
Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB
Key Differences
|
Zotac Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB |
|---|---|---|
| GPU Base Clock Speed | 1515MHz | 797MHz |
| GPU Boost Clock Speed | 1770MHz | Not Known |
| Pixel Rate | 113.3 GPixel/s | 6.38 GPixel/s |
| GPU Memory Speed | 1750MHz | 891MHz |
| GPU Render Output Units (ROPs) | 64 | 16 |
| No. of Supported Displays | 4 | Not Known |
Performance
|
Zotac Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB |
|---|---|---|
| GPU Base Clock Speed | 1515MHz | 797MHz |
| Pixel Rate | 113.3 GPixel/s | 6.38 GPixel/s |
| FLOPS (Floating-point Performance) | 10.42 TFLOPS | 0.73 TFLOPS |
| Texture Filter Rate | 325.7 GTexels/s | 25.5 GTexels/s |
| GPU Memory Speed | 1750MHz | 891MHz |
| Total GPU Shading Units | 2944 | 384 |
| Total GPU TMUs | 184 | 32 |
| GPU Boost Clock Speed | 1770MHz | Not Known |
| GPU Render Output Units (ROPs) | 64 | 16 |
| DPFP (Double Precision Floating Point) Support |  No
|
No
|
Features
|
Zotac Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB |
|---|---|---|
| DirectX Version Info | 12 | 11 |
| OpenGL Driver Version | 4.5 | 4.3 |
| OpenCL Driver Version | 1.2 | Not Known |
| Multi-display Tech Support |  Yes
|
No
|
| GPU Temperature Under Load | 74°C | Not Known |
| Idle GPU Temperature | 30°C | Not Known |
| 3D Support | Yes
|
Yes
|
| Noise Level Under Load | 45dB | Not Known |
| Idle Noise Level | 40.3dB | Not Known |
| Idle Power Consumption | 53W | Not Known |
| 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 Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB |
|---|---|---|
| No. of USB Ports | 1 | No Data Found |
| USB Type-C Support | Yes
|
No Data Found |
Ports
|
Zotac Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 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
|
Zotac Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB |
|---|---|---|
| TDP (Thermal Design Point) | No Data Found | No Data Found |
| Transistor Count | 13600 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 | 268mm | 145mm |
| Height | 113mm | 111mm |
Memory
|
Zotac Gaming GeForce RTX 2080 Twin Fan | Nvidia GeForce GT 640 OEM 128-bit DDR3 1GB |
|---|---|---|
| Effective Memory Clock | 14000MHz | 1782MHz |
| Max Memory Bandwidth | 448GB/s | 28.5GB/s |
| RAM | 8GB | 1GB |
| Memory Bus Interface Width | 256bit | 128bit |
| GDDR Memory Version | 6 | Not Known |
| ECC (Error-Correcting Code) Memory Support | No
|
No
|
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