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Pricing lists from two major electronics components distributors are showing that GDDR6 memory carries a whopping premium over GDDR5: “14 Gbps GDDR6 memory chips from Micron Technology cost over 70 percent more than common 8 Gbps GDDR5 chips of the same density, from the same manufacturer.” TechPowerUp suggests that graphics card manufacturers can save around $22 per card by using six GDDR5 chips instead of GDDR6.
Although GDDR6 is available in marginally cheaper 13 Gbps and 12 Gbps trims, NVIDIA has only been sourcing 14 Gbps chips. Even the company's upcoming RTX 2060 performance-segment graphics card is rumored to implement 14 Gbps chips in variants that feature GDDR6. The sheer disparity in pricing between GDDR6 and GDDR5 could explain why NVIDIA is developing cheaper GDDR5 variants of the RTX 2060.
Although GDDR6 is available in marginally cheaper 13 Gbps and 12 Gbps trims, NVIDIA has only been sourcing 14 Gbps chips. Even the company's upcoming RTX 2060 performance-segment graphics card is rumored to implement 14 Gbps chips in variants that feature GDDR6. The sheer disparity in pricing between GDDR6 and GDDR5 could explain why NVIDIA is developing cheaper GDDR5 variants of the RTX 2060.