Topic: EVGA Geforce 1660 super SC Ultra Low Hashrate (20 MH) Ethash (SOLVED!) - page 2. (Read 599 times)

Flashing wasn't the issue. mem freq did it! But thank you for the great pointer!

I stand corrected. I did not underclock enough! I'm on 30.5 Now! THANK YOU!!

It depends on memory manufacturer. It looks like that you have Hynix memory. If it`s so - you ought to downclock memory to -502.

I don't know if hiveOS supports flashing bios in its OS, you can try checking that out as it makes things more easier than doing it manually yourself, if HiveOS don't support bios modding you can use simplemining OS instead, drop a thank you if this works, I will wait for your comment

I'm not surprised here mate, many are familiar with such low hashrate from one or two GPUs out of many they own, I suggest you consider bios modding, find the right bios and flash the bios, you will get better increase in hashrate goodluck

I thought let's buy a new card!

So I have one running mining rig with 3 x PNY 1660 supers in it. No problems there everyting is running on 30.5 MH/sec (total 121 MH/sec) with a powerdraw of 217 Watts out of the wall (~75 a card). Using Phoenix miner under the latest HiveOS.

I recently (last week) bought a brand new EVGA 1660 super Ultra SC and plugged it into my system. I used the default settings (no OC, no power limiting) and expected a hashrate around 25 MH using Phoenix miner. It only hit 20 MH. Overclocked on +950 and power limited it does 23.7.

So to eliminate as much options as possible I did the following:

- I removed all cards and risers and booted it as the only card in the first x16 slot on the board: exact same results
- I used xubuntu 20.04 with the 450 nvidia drivers with again only this card in the first x16 slot: exact same results
- I used Windows 10 64 bits with the 460 nvidia drivers and msi afterburner: exact same results
- All was repeated on a different motherboard

I checked all the info in GPU-Z and the control panel and it is all similar to my PNY cards.

OS: HiveOS / Xubuntu 20.04 / Windows 10
Drivers: Nvidia 450 and 460
Phoenix miner version: 5.4C (linux and windows)
Card: EVGA Geforce GTX 1660 Super SC Ultra (brand new)
Board 1: MSI G41M P33
Board 2: MSI B630-A PRO

As I only found results comparable to my PNY cards searching on this EVGA card, I'm quite lost and baffled. I haven't seen anyone else with this problem. The card seems to be performing like a regular 1660.

If any additional info is needed, I will gladly put it here.

Any thoughts and advice greatly appreciated, thanks in advance for your help!