Overclock the Zotac GeForce GTX 1660 for impressive gains


When the GeForce GTX 1660 was launched a month ago, we looked at the variations of MSI on the site and the Zotac Gaming model on the YouTube channel. We found that they were very competent 1080p gaming cards. Looking at the GeForce GTX 1660 from Zotac Gaming, I also recorded the performance with a light overclock, time-pressed, and not having time to dig to see how much juice remained in the tank, proves a little.

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The GeForce GTX 1660 from Zotac Gaming displays the default clocks on the kernel and memory (1785 MHz Boost Core / 8 Gbps GDDR5) and has a typical clock of 1800-1850 MHz, depending on the games. We gave him a modest increase of + 125 MHz on the heart and + 250 MHz for the memory, which is nice. But, after consulting several other people who have these cards in hand to validate our final overclock and how achievable it would be, we decided that it was safe to use it. Install it at a very good + 225 MHz for the kernel keeping it around 2050 MHz while playing and a crazy + 999 MHz for memory resulting in an actual memory speed of 10 Gbps on the GDDR5 , which divides the difference between it and the GFDR GTX 1660Ti GDDR6. The micro-memory used on the GeForce GTX 1660 seems to be exceptionally efficient and well matured. This increases the memory bandwidth from 192 GB / s to 240 GB / s.

I have been playing on this map for over a week at these settings and have not found any instance of instability. I even played throughout Anthem's campaign, if I was a little scared, and a lot of Assassin's Creed Odyssey. I've therefore decided to save and record the performance metrics to see how much extra performance you're getting with this $ 219 card in modern titles.

Test configuration

We tested all the cards on our Z370-based test system with the Intel Core i9-9900k processor clocked at 5 GHz on all cores with 16 GB of DDR4 3200. We tested on the DX11 and DX12, but we realized that we had not tested any It may be time to go back and add Wolfenstein 2 to the list for good measure.

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Test system

components Z370
CPU Intel Core i9-9900k at 5 GHz
Memory 16GB G.Skill Trident Z DDR4 3200
Motherboard EVGA Z370 Classified K
Storage room SSD NVMe P1 1 TB Crucial
PSU Cooler Master V1200 Platinum

Graphic cards tested

GPU Architecture Number of cores Clock speed Memory capacity Speed ​​of memory
ZOTAC Gaming GTX 1660 OC Manual Turing 1408 1739/1994 6 GB GDDR5 10 Gbps
ZOTAC Gaming GTX 1660 Turing 1408 1530/1785 6 GB GDDR5 8 Gbps
NVIDIA GTX 1060 FE 6GB Pascal 1280 1506/1708 6 GB GDDR5 8 Gbps
MSI RX 580 Armor 8GB Polaris 20 2304 1366 8 GB GDDR5 8 Gbps

Synthetics, heat and power consumption

In synthetic tests, we found a significant gain in overclocking, even more with DX12 compared to DX11, because Time Spy records a 15% increase in performance, while Firestrike sees 12%. What is interesting is that the power consumption has increased by only 8% and thermal 5%, a very good compromise for the performance you have achieved.

Game Results

You're going to want to focus on the game with this overclock because it's here that rubber meets the road in the world of video card and that the Zotac Gaming GeForce GTX 1660 turns on fire once overclocked. The lowest performance gain is achieved with Hitman 2 with only 8% increase while Shadow of the Tomb Raider escapes with the outlier reward with a 42% increase (we have seen a similar improvement performance during our initial review). If we eliminate the Tomb Raider equation from the equation, we see an average increase of 14% and this performance that I would not want to leave on the table at this price range.


The GeForce GTX 1660 from Zotac Gaming really shows its value in the new area of ​​the map with such a performance improvement, which makes it superior and superior to what it already offered, making the argument a bit harder for the GeForce GTX 1660Ti. Of course, this forces you to be comfortable enough to perform the overclock. For this type of performance gain, I have a hard time imagining that anyone would be willing to leave that aside. What is more impressive is an average improvement of 14%, with an increase of only 8% in energy consumption and a very easy increase in temperature. Recently, it has been more common to increase energy consumption by 14% and to see, at best, only 8% improvement in performance. This is a good thing to see, but it shows that GDDR5 has almost managed to make its way even midway today.

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