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Gigabyte GTX 1660 Ti Gaming OC 6G Review – worth £300?

Rating: 7.5.

For our third GTX 1660 Ti review, we assess the Gigabyte GTX 1660 Ti Gaming OC 6G. Not to be confused with Gigabyte’s 1660 Ti OC 6G, this ‘Gaming’ card has an increased boost clock, a triple-fan cooler and the addition of RGB lighting. It comes with a £40 price premium over GTX 1660 Ti MSRP, however, so we will have to see whether or not Gigabyte has created a card that can justify the higher price.

Watch via our Vimeo channel (below) or over on YouTube at 2160p HERE

There are a lot of similarities between this Gigabyte GTX 1660 Ti Gaming OC 6G and the previously reviewed 1660 Ti OC 6G. They both share the same overall design language, with the same style of shroud and backplate. The new Gaming model – the subject of this review – essentially extends the cooler to a triple-fan configuration, while it also increases the boost clock to 1860MHz.

GPU RTX 2070 (FE)  GTX 1070  RTX 2060 (FE)  GTX 1660 Ti GTX 1060
SMs 36 15 30 24 10
CUDA Cores  2304 1920 1920 1536 1280
Tensor Cores  288 N/A 240 N/A N/A
Tensor FLOPS 63 N/A 51.6 N/A N/A
RT Cores 36 N/A 30 N/A N/A
Texture Units 144 120 120 96 80
ROPs 64 64 48 48 48
Rays Cast  6 Giga Rays/sec 0.65 Giga Rays/sec 5 Giga Rays/sec 0.44 Giga Rays/sec
RTX Performance  45 Trillion RTX-OPS 6.5 Trillion RTX-OPS 37 Trillion RTX-OPS N/A
GPU Boost Clock  1710 MHz 1683 MHz 1680 MHz 1770 MHz 1708 MHz
Memory Data Rate 14 Gbps 8 Gbps 14 Gbps 12 Gbps 8 Gbps
Total Video Memory 8GB GDDR6 8GB GDDR5 6GB GDDR6 6GB GDDR6 6GB GDRR5
Memory Interface  256-bit 256-bit 192-bit 192-bit 192-bit
Memory Bandwidth  448 GB/sec 256 GB/sec 336.1 GB/sec 288.1 GB/sec 192 GB/sec
TDP 185W 150W 160W 120W 120W

Reference spec for GTX 1660 Ti has the boost clock at 1770MHz. The MSI Gaming X card we looked at for launch day was clocked at 1875MHz, and the Gaming OC is just slightly slower at 1860MHz – making it still 90MHz faster than reference spec. How much performance difference there will between the two cards, however, is something we will look at throughout this review.

Other than that, the spec of this card is unchanged. That means it uses the TU116 GPU with 24 SMs and 1536 CUDA cores, while the 6GB GDDR6 memory is clocked at the default 12Gbps.

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