Galax GeForce RTX 2080 SG Edition vs Zotac GeForce GT 640 2GB
VS
Galax GeForce RTX 2080 SG Edition
Zotac GeForce GT 640 2GB
Key Differences
Performance
Features
Miscellaneous
Ports
General info
Memory
Galax GeForce RTX 2080 SG Edition
Zotac GeForce GT 640 2GB
Key Differences
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| GPU Base Clock Speed | 1515MHz | 1046MHz |
| GPU Boost Clock Speed | 1800MHz | Not Known |
| Pixel Rate | 115.2 GPixel/s | 7.22 GPixel/s |
| GPU Memory Speed | 1750MHz | 1250MHz |
| GPU Render Output Units (ROPs) | 64 | 16 |
| No. of Supported Displays | 4 | Not Known |
Performance
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| GPU Base Clock Speed | 1515MHz | 1046MHz |
| Pixel Rate | 115.2 GPixel/s | 7.22 GPixel/s |
| FLOPS (Floating-point Performance) | 10.6 TFLOPS | 0.69 TFLOPS |
| Texture Filter Rate | 331.2 GTexels/s | 28.8 GTexels/s |
| GPU Memory Speed | 1750MHz | 1250MHz |
| Total GPU Shading Units | 2944 | 384 |
| Total GPU TMUs | 184 | 32 |
| GPU Boost Clock Speed | 1800MHz | Not Known |
| GPU Render Output Units (ROPs) | 64 | 16 |
| DPFP (Double Precision Floating Point) Support |  No
|
No
|
Features
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| DirectX Version Info | 12 | 11 |
| OpenGL Driver Version | 4.6 | 4.3 |
| OpenCL Driver Version | 1.2 | 1.1 |
| Multi-display Tech Support |  Yes
|
Yes
|
| 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 |
| Ray Tracing Support | No
|
No
|
Miscellaneous
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| No. of USB Ports | 1 | No Data Found |
| USB Type-C Support | Yes
|
No Data Found |
Ports
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| 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
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| 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 | 308mm | 145mm |
| Height | Not Known | 111mm |
Memory
|
Galax GeForce RTX 2080 SG Edition | Zotac GeForce GT 640 2GB |
|---|---|---|
| Effective Memory Clock | 14000MHz | 5000MHz |
| Max Memory Bandwidth | 448GB/s | 28.5GB/s |
| RAM | 8GB | 2GB |
| Memory Bus Interface Width | 256bit | 128bit |
| GDDR Memory Version | 6 | 5 |
| ECC (Error-Correcting Code) Memory Support | No
|
No
|
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