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Gigabyte GTX 1660 Ti OC 6G Review – Bang For Buck King

Rating: 8.5.

For GTX 1660 Ti launch day, we reviewed the MSI Gaming X card – a high-end factory overclocked model with a £50 price premium over the 1660 Ti's £259 MSRP. While it proved to be a very capable card, the added cost meant it didn't offer very compelling value. That could all change today, however, as we turn to Gigabyte's GTX 1660 Ti OC 6G. It's still a dual-fan, factory overclocked card, but it comes in at just £269, putting it much closer to the baseline MSRP. Is it worth buying?

Taking a look at the various GTX 1660 Tis currently available for £259, a lot of them are actually small, single-fan coolers running at stock speeds. This Gigabyte GTX 1660 Ti OC 6G may be £10 more expensive than the MSRP, but you get a dual-fan ‘Windforce X2' cooler, while the core has also been slightly overclocked – running at 1800MHz instead of 1770MHz.

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

The only real difference between this Gigabyte card and the reference spec for GTX 1660 Ti is the clock speed – as mentioned, the OC 6G has been overclocked by 30MHz to give a rated boost clock of 1800MHz. This is 75MHz slower than what MSI achieved with its Gaming X, so it will be interesting to see what kind of performance difference this works out to when we get to our game testing.

Elsewhere, of course all the other core specs of the GTX 1660 Ti are the same. The card uses the TU116 GPU, newly created for GTX 1660 Ti, which is outfitted with 24 SMs and 1536 CUDA cores. There's 6GB GDDR6 memory running at 12Gbps – 2Gbps slower than the GDDR6 we have seen from RTX 20-series cards – but we look at overclocking this later in the review.

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