Mining Efficiency On GTX 1660, 1660 Ti & 1660 SUPER: Tuning, Hashrate

Overclocking and lowering power consumption on the GTX 1660

The maximum overclocking of the 1660 SUPER is possible with the latest driver installed. To increase the hash rate, you do not need to change the timings. Adjusting the memory and core frequency parameters when overclocking a GOU device is carried out using MSI Afterburner.

The setting options depend on the manufacturer of the memory. The 1660 SUPER and 1660 Ti can have video chips from Samsung, Micron or Hynix. On cards with Samsung memory, the memory clock frequency (memory clock) can be raised above +1000, while the core (core clock) is either left at zero or driven into a small minus (for example, -300).

Cards with micron memory usually do not overclock memory higher than +850, and the core is set to either 0 or a small plus (for example, + 50).

At first, 1660 cards with Hynix memory were considered a poor purchase option. The miners could not overclock them on air higher than up to 26 Mh / s, and the miner who got the 1660Super graphics adapters with Hynix chips in the store immediately carried them back, and if he could not return them, he bitterly cursed his fate. But only on some models, memory chips can be viewed without removing the top cover.

In most cases, you need to buy a card, carry it home and insert it into your computer. Then the Gpu-Z program starts and only then you can see what you got. However, folk craftsmen, in the end, found out that Hynix video memory does not at all mean a loss of profit. You need to set the memory frequency for this card to -1004 on AF and it will give out approximately 31,7 Mh/s on Ethereum. Tested on two versions of Palit 1660 SUPER graphics cards. At the same time, you leave the core at zero, and powerlimit +60. Raising the power limit on the hashrate has almost no effect, but it leads to an increase in power consumption and excessive heating of the graphics core. But on other mining algorithms, 1660 cards with hyunix memory require a higher power limit, and sometimes even converting the core frequency to plus. With the settings for ether on the BitTube coin and other forks of MimbleWimble, you will not get the maximum hashrate.

To reduce 1660 Ti consumption in mining, set to Afterburner Power Limit graphics cards in the range from 60 to 75%. To lower core voltage:

• ⋅ Move the slider Core Clock all the way to the left.
• ⋅ Click on the three step graph at the end of the line.
• ⋅ In the pop-up window, raise the beginning of the graph to the required core frequency value.
• ⋅ Click "apply».

This will keep the voltage at 800mV while increasing overclocking. However, sometimes the graphics adapter may not respond to changes to the Curve setting. If a particular gpu device has Samsung video memory chips installed, you are in luck. Video cards with memory from this manufacturer hold overclocking well and are easy to undervolt. But if the video card has Hynix or Micron memory, it is not always possible to lower the voltage with the help of an afterburner. Then try the alternative.

You can lower the core voltage even further using NvidiaInspector. The program is not suitable for all video cards and is incompatible with other overclocking utilities. To configure overclocking and voltage, specify in a text file located in the program folder.

• ⋅ TIMEOUT /T – delay interval before application start;
• ⋅ SET FAN= fan speed;
• ⋅ SET VOLT= core voltage;
• ⋅ SET TEMP= target GPU temperature;
• ⋅ SET GPU - card id starting from zero;
• ⋅ -setMemoryClockOffset: - memory clock (0,0,400= +400 MHz).
• ⋅ -setBaseClockOffset: - core clock.

Change the file extension to bat, create a shortcut and place it in the autorun folder. Standard way C:\Users\username\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup.

If the farm is unstable, you need to identify the problematic video card and increase the core voltage or reduce overclocking. At too high memory frequency settings, the software usually freezes, and overclocking the core leads to the rig stopping. Raisers may need to be replaced.