Asus Radeon RX 6800 XT vs Asus Radeon HD 7990

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Asus Radeon RX 6800 XT
Asus Radeon RX 6800 XT Image
Asus Radeon HD 7990
Asus Radeon HD 7990 Image
Asus Radeon RX 6800 XT
Asus Radeon HD 7990
Key Differences Key Differences Asus Radeon RX 6800 XT Asus Radeon HD 7990
GPU Base Clock Speed 1825MHz 950MHz
GPU Boost Clock Speed 2250MHz 1000MHz
Pixel Rate 288 GPixel/s 60.8 GPixel/s
GPU Memory Speed 2000MHz 1500MHz
GPU Render Output Units (ROPs) 128 64
No. of Supported Displays 4 6
Performance Performance Asus Radeon RX 6800 XT Asus Radeon HD 7990
GPU Base Clock Speed 1825MHz 950MHz
Pixel Rate 288 GPixel/s 60.8 GPixel/s
FLOPS (Floating-point Performance) 20.74 TFLOPS 7.78 TFLOPS
GPU Memory Speed 2000MHz 1500MHz
Texture Filter Rate 648 GTexels/s 144 GTexels/s
Total GPU Shading Units 4608 4096
Total GPU TMUs 288 256
GPU Boost Clock Speed 2250MHz 1000MHz
GPU Render Output Units (ROPs) 128 64
DPFP (Double Precision Floating Point) Support No Yes
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Features Features Asus Radeon RX 6800 XT Asus Radeon HD 7990
DirectX Version Info 12 11.1
OpenGL Driver Version 4.6 4.3
OpenCL Driver Version 2 1.2
Multi-display Tech Support Yes Yes
3D Support Yes Yes
Ray Tracing Support Yes No
No. of Supported Displays 4 6
PassMark (G3D) Score Not Known 5105
3DMark Vantage Texture Fill Result Not Known 211.8GTexels/s
GPU Temperature Under Load Not Known 82°C
3DMark Vantage Pixel Fill Result Not Known 26.2GPixel/s
PassMark (DirectCompute) Benchmark Result Not Known 2755
Idle GPU Temperature Not Known 39°C
Noise Level Under Load Not Known 54.8dB
Power Consumption Under Peak Load Not Known 552W
Idle Power Consumption Not Known 127W
Idle Noise Level Not Known 39.2dB
Multi-GPU Support Count Not Known 4
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Miscellaneous Miscellaneous Asus Radeon RX 6800 XT Asus Radeon HD 7990
No. of USB Ports 1 No Data Found
USB Type-C Support Yes No Data Found
Ports Ports Asus Radeon RX 6800 XT Asus Radeon HD 7990
HDMI Output Support Yes Yes
GPU HDMI Version 2.1 Not Known
DisplayPort Output 2 0
No. of HDMI Ports 1 Not Known
DVI Output Ports 0 1
Mini DisplayPort Output 0 4
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General info General info Asus Radeon RX 6800 XT Asus Radeon HD 7990
TDP (Thermal Design Point) No Data Found No Data Found
Transistor Count 26800 million 4313 million
Semiconductor Size 7nm 28nm
PCI Express Version 4 3
Dual-GPU Support No Yes
Air-water Cooling Support No No
Width Size 266.7mm 305mm
Height 119.8mm 110mm
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Memory Memory Asus Radeon RX 6800 XT Asus Radeon HD 7990
Effective Memory Clock 16000MHz 6000MHz
Max Memory Bandwidth 512GB/s 576GB/s
RAM 16GB 6GB
Memory Bus Interface Width 256bit 768bit
GDDR Memory Version 6 5
ECC (Error-Correcting Code) Memory Support No No
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