Nvidia GeForce RTX 3090 vs Nvidia GeForce GTX 645 OEM
VS
Nvidia GeForce RTX 3090
Nvidia GeForce GTX 645 OEM
Key Differences
Performance
Features
Ports
General info
Memory
Nvidia GeForce RTX 3090
Nvidia GeForce GTX 645 OEM
Key Differences
|
Nvidia GeForce RTX 3090 | Nvidia GeForce GTX 645 OEM |
|---|---|---|
| GPU Base Clock Speed | 1395MHz | 823MHz |
| GPU Boost Clock Speed | 1695MHz | 888MHz |
| Pixel Rate | 189.8 GPixel/s | 9.88 GPixel/s |
| GPU Memory Speed | 1219MHz | 1000MHz |
| GPU Render Output Units (ROPs) | 112 | 16 |
| No. of Supported Displays | Not Known | 4 |
Performance
|
Nvidia GeForce RTX 3090 | Nvidia GeForce GTX 645 OEM |
|---|---|---|
| GPU Base Clock Speed | 1395MHz | 823MHz |
| Pixel Rate | 189.8 GPixel/s | 9.88 GPixel/s |
| FLOPS (Floating-point Performance) | 35.58 TFLOPS | 0.95 TFLOPS |
| GPU Memory Speed | 1219MHz | 1000MHz |
| Texture Filter Rate | 556 GTexels/s | 39.5 GTexels/s |
| Total GPU Shading Units | 10496 | 576 |
| Total GPU TMUs | 328 | 48 |
| GPU Boost Clock Speed | 1695MHz | 888MHz |
| GPU Render Output Units (ROPs) | 112 | 16 |
| DPFP (Double Precision Floating Point) Support |  No
|
No
|
Features
|
Nvidia GeForce RTX 3090 | Nvidia GeForce GTX 645 OEM |
|---|---|---|
| DirectX Version Info | 12 | 11 |
| OpenGL Driver Version | 4.6 | 4.3 |
| OpenCL Driver Version | 2 | 1.1 |
| Multi-display Tech Support |  Yes
|
Yes
|
| 3D Support | Yes
|
Yes
|
| Ray Tracing Support | Yes
|
No
|
| PassMark (G3D) Score | Not Known | 1977 |
| PassMark (DirectCompute) Benchmark Result | Not Known | 943 |
| No. of Supported Displays | Not Known | 4 |
Ports
|
Nvidia GeForce RTX 3090 | Nvidia GeForce GTX 645 OEM |
|---|---|---|
| HDMI Output Support | Yes
|
Yes
|
| GPU HDMI Version | 2.1 | Not Known |
| DisplayPort Output | 1 | 1 |
| No. of HDMI Ports | 3 | Not Known |
| DVI Output Ports | 0 | 2 |
| Mini DisplayPort Output | 0 | 0 |
General info
|
Nvidia GeForce RTX 3090 | Nvidia GeForce GTX 645 OEM |
|---|---|---|
| TDP (Thermal Design Point) | No Data Found | No Data Found |
| Transistor Count | 28300 million | 2540 million |
| Semiconductor Size | 8nm | 28nm |
| PCI Express Version | 4 | 3 |
| Dual-GPU Support | No
|
No
|
| Air-water Cooling Support | No
|
No
|
| Width Size | 313mm | 145mm |
| Height | 138mm | 111mm |
Memory
|
Nvidia GeForce RTX 3090 | Nvidia GeForce GTX 645 OEM |
|---|---|---|
| Effective Memory Clock | 19500MHz | 4000MHz |
| Max Memory Bandwidth | 936GB/s | 64GB/s |
| RAM | 24GB | 1GB |
| Memory Bus Interface Width | 384bit | 128bit |
| GDDR Memory Version | 6 | 5 |
| ECC (Error-Correcting Code) Memory Support | No
|
No
|
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