AMD Radeon RX 6600 vs NVIDIA GeForce GTX 1660 Ti

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Radeon RX 6600 compared with GeForce GTX 1660 Ti

	AMDRadeon RX 6600	NVIDIAGeForce GTX 1660 Ti
Overview
Released
Released	October 2021	February 2019
Performance
Chip maker
Chip maker	AMD	NVIDIA
Architecture
Architecture	RDNA 2	Turing
Shader cores
Shader cores	1,792	1,536
Boost clock
Boost clock	2,491 MHz (better)	1,770 MHz
Architecture
Architecture	AMD GPU specification baseline with 28 compute units, 64 ROPs and 112 texture units. Photo shows MSI's stock-clock MECH 2X 8G partner card.	NVIDIA reference figures; no Founders Edition was sold. Photo shows MSI's stock-clocked GTX 1660 Ti VENTUS XS 6G, whose dimensions and outputs are specified below.
Ray tracing
Ray tracing	28 ray accelerators	No dedicated RT Cores
AI cores
AI cores	–	No Tensor Cores
Upscaling and frame generation
Upscaling and frame generation	AMD FidelityFX Super Resolution	No NVIDIA DLSS
Base clock
Base clock	AMD publishes a 2,044 MHz game clock; the 2,491 MHz boost is the maximum frequency for burst workloads	1500 MHz
Cache
Cache	32 MB Infinity Cache	–
Memory
Video memory
Video memory	8 GB GDDR6 (better)	6 GB GDDR6
Memory bus
Memory bus	128-bit	192-bit (better)
Memory bandwidth
Memory bandwidth	224 GB/s	–
Memory detail
Memory detail	14 Gbps GDDR6; 224 GB/s bandwidth	12 Gbps GDDR6 (MSI VENTUS XS 6G); numerical bandwidth omitted because the maker sources used do not publish it.
Connections and power
Board power
Board power	132 W	120 W (better)
Interface
Interface	PCIe 4.0	PCIe 3.0
Display outputs
Display outputs	Pictured MSI MECH 2X has 3 × DisplayPort 1.4 and 1 × HDMI 2.1; AMD specifies DisplayPort 1.4a and HDMI 2.1 with variable refresh rate and FRL	3 × DisplayPort 1.4a and 1 × HDMI 2.0b; up to 4 displays; HDCP 2.2 (MSI VENTUS XS 6G)
Maximum resolution
Maximum resolution	7680 × 4320 and up to four displays on MSI's specification	7680 × 4320 (MSI VENTUS XS 6G)
Power connector
Power connector	1 × 8-pin	1 × 8-pin
Recommended power supply
Recommended power supply	AMD specifies 450 W; MSI recommends 500 W for its pictured MECH 2X. Requirements depend on the rest of the system.	450 W
Slot width
Slot width	Partner card designs vary; MSI MECH 2X is 46 mm thick	–
Size (reference card)
Size (reference card)	No retail AMD reference card; pictured MSI MECH 2X is 235 × 125 × 46 mm and 710 g	204 × 128 × 42 mm and 669 g (pictured MSI VENTUS XS 6G). NVIDIA's reference dimensions are 145 × 111 mm, two slots; actual partner boards vary.
Video encode and decode
Video encode and decode	AMD publishes AV1 decoding; MSI confirms PCIe 4.0 x8	Turing NVENC encoder, also used by the contemporary RTX range