AMD Radeon RX 6800 XT vs AMD Radeon RX 7800 XT

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Radeon RX 6800 XT compared with Radeon RX 7800 XT

	AMDRadeon RX 6800 XT	AMDRadeon RX 7800 XT
Overview
Released
Released	November 2020	September 2023
Performance
Chip maker
Chip maker	AMD	AMD
Architecture
Architecture	RDNA 2	RDNA 3
Shader cores
Shader cores	4,608	3,840
Boost clock
Boost clock	2,250 MHz	2,430 MHz (better)
Architecture
Architecture	AMD reference specification; 72 compute units and 26.8 billion transistors	60 compute units, 96 ROPs, 240 texture units; game clock 2124 MHz; 28.1 billion transistors
Manufacturing process
Manufacturing process	7 nm	–
Ray tracing
Ray tracing	72 Ray Accelerators; DirectX Raytracing support	60 second-generation Ray Accelerators
AI cores
AI cores	–	120 AI Accelerators; 74.6 TOPS INT8
Upscaling and frame generation
Upscaling and frame generation	AMD FidelityFX Super Resolution (FSR); AMD Radeon Super Resolution	AMD FSR, Radeon Super Resolution
Base clock
Base clock	2015 MHz game frequency; up to 2250 MHz boost, which AMD defines for bursty workloads rather than sustained gaming	–
Cache
Cache	128 MB AMD Infinity Cache	64 MB AMD Infinity Cache (second generation)
Memory
Video memory
Video memory	16 GB GDDR6	16 GB GDDR6
Memory bus
Memory bus	256-bit	256-bit
Memory bandwidth
Memory bandwidth	512 GB/s	624 GB/s (better)
Memory detail
Memory detail	Up to 16 Gbps GDDR6; 512 GB/s physical memory bandwidth	GDDR6 at up to 19.5 Gbps; AMD quotes up to 2708 GB/s effective bandwidth with Infinity Cache
Connections and power
Board power
Board power	300 W	263 W (better)
Interface
Interface	PCIe 4.0	–
Display outputs
Display outputs	DisplayPort 1.4a, HDMI 2.1 with VRR and FRL, and USB-C (AMD reference)	DisplayPort 2.1, HDMI 2.1
Power connector
Power connector	2 × PCIe 8-pin	2 × 8-pin
Recommended power supply
Recommended power supply	750 W	700 W
Slot width
Slot width	2.5-slot (AMD reference)	2.5-slot (reference card)
Size (reference card)
Size (reference card)	267 mm long (AMD reference); no reference width or height verified	267 mm long, 2.5-slot (reference card)
Video encode and decode
Video encode and decode	Hardware AV1 decoding; H.264 and H.265/HEVC encode and decode	H.264, HEVC and AV1 encode and decode