Zotac GeForce RTX 2080 Ti X-Gaming OC vs Nvidia GeForce GT 640 OEM GDDR5 1GB

VS
Zotac GeForce RTX 2080 Ti X-Gaming OC
Zotac GeForce RTX 2080 Ti X-Gaming OC Image
Nvidia GeForce GT 640 OEM GDDR5 1GB
Nvidia GeForce GT 640 OEM GDDR5 1GB Image
Zotac GeForce RTX 2080 Ti X-Gaming OC
Nvidia GeForce GT 640 OEM GDDR5 1GB
Key Differences Key Differences Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 1GB
GPU Base Clock Speed 1350MHz 950MHz
GPU Boost Clock Speed 1605MHz Not Known
Pixel Rate 138.6 GPixel/s 7.63 GPixel/s
GPU Memory Speed 1750MHz 1250MHz
GPU Render Output Units (ROPs) 88 Not Known
No. of Supported Displays 4 Not Known
Performance Performance Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 1GB
GPU Base Clock Speed 1350MHz 950MHz
Pixel Rate 138.6 GPixel/s 7.63 GPixel/s
FLOPS (Floating-point Performance) 13.71 TFLOPS 0.73 TFLOPS
GPU Memory Speed 1750MHz 1250MHz
Texture Filter Rate 428.4 GTexels/s 30.4 GTexels/s
Total GPU Shading Units 4352 384
GPU Boost Clock Speed 1605MHz Not Known
GPU Render Output Units (ROPs) 88 Not Known
DPFP (Double Precision Floating Point) Support No No
Features Features Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 1GB
DirectX Version Info 12 11
OpenGL Driver Version 4.5 4.3
OpenCL Driver Version 2 Not Known
Multi-display Tech Support Yes No
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 Miscellaneous Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 1GB
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 1GB
HDMI Output Support Yes Yes
GPU HDMI Version 2 Not Known
DisplayPort Output 3 1
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 0
Mini DisplayPort Output 0 0
General info General info Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 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 311mm 145mm
Height 115mm 111mm
Memory Memory Zotac GeForce RTX 2080 Ti X-Gaming OC Nvidia GeForce GT 640 OEM GDDR5 1GB
Effective Memory Clock 14000MHz 5000MHz
Max Memory Bandwidth 616GB/s 80GB/s
RAM 11GB 1GB
Memory Bus Interface Width 352bit 128bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No

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