AMD Radeon RX 6600 14 Gbps memory confirmed through leaked GPU-Z screenshot

AMD Radeon RX 6600 with 14 Gbps memory

A TechPowerUP GPU-Z screenshot confirms RX 6600 non-XT is the first card from the RDNA2 series to ship with reduced memory speed.

Earlier this week we revealed the full specs of the Radeon RX 6600 non-XT model, the upcoming mid-tier graphics card based on Navi 2X architecture. This card will be the slowest desktop RDNA2 card that AMD has launched yet, featuring ‘only’ 1792 Stream Processors, a reduction of 256 cores from the full Navi 23 GPU.

AMD Radeon RX 6600 will have lower frequencies compared to the XT variant. The card will ship with a game clock of 2044 MHz and a boost clock of 2491 MHz, a reduction of 319 and 98 MHz respectively from XT SKU. The graphics core frequency is not the only being limited on the non-XT variant. The card will also have limited memory bandwidth from 256 GB/s to 224 GB/s, which is a result of reduced memory speed from effective 16 Gbps to 14 Gbps.

The screenshot shared below features Sapphire RX 6600 Pulse, clocked at reference frequencies. The card had Adrenaln 21.30.17.06 driver installed in Windows 10. The specs list 1750 MHz memory frequency which multiplied by 8 gives 14 Gbps:

AMD Radeon RX 6600 GPU-Z Specifications,Source: VideoCardz

In official benchmarks, the card trades places with GeForce RTX 3060 depending on a title. AMD had to artificially limit the card’s perforamnce by introducing lower clocks, limited bandwidth, and probably more importantly, reduced power consumption of 132W. All those factors will prevent the card from reaching RX 6600 XT performance and self-competition in the RDNA2 stack.

AMD claims that their RX 6600 non-XT on average offers 1.3x more performance per watt than GeForce RTX 3060, which appears the main selling of this new SKU. The card officially launches on October 13th, which is also the date of the review embargo.

AMD Radeon RX 6000 Series
VideoCardz	RX 6800	RX 6700 XT	RX 6600 XT	RX 6600
Picture
GPU	Navi 21 XL	Navi 22 XT	Navi 23 XT	Navi 23 XL
Cores	3840	2560	2048	1792
Infinity Cache	128 MB	96 MB	32 MB	32 MB
Game Clock	1815 MHz	2321 MHz	2359 MHz	2044 MHz
Boost Clock	2105 MHz	2581 MHz	2589 MHz	2491 MHz
Memory Clock	16 Gbps	16 Gbps	16 Gbps	14 Gbps
Memory	16 GB GDDR6	12 GB GDDR6	8 GB GDDR6	8 GB GDDR6
Memory Bus	256-bit	192-bit	128-bit	128-bit
Bandwidth	512 GB/s	384 GB/s	256 GB/s	224 GB/s
TBP	250W	230W	160W	132W
MSRP	579 USD	479 USD	379 USD	TBC
Launch Date	November 2020	March 2021	August 2021	October 2021