Question I have incredible problems on the RX 6600

shidden609

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Dez 13, 2021
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Hi, I'm going crazy because my RX 6600 is so weired.

After the MPT adjustment, excluding the crashes and hashrate drop,

There are 3 types for my rigs:

Type 1 - Long time (2 days) working, real pool hashrate reaches 98% of miner report.

Type 2 - At first, the hashrate is over 99%, but over time, the pool's hashrate will gradually drop to 96% or lower.

Type 3 - It is difficult to maintain at 95% at the beginning, or even only 89%, unable to increase.

The reported hashrate of these miners, is the same, and has not changed in over time.


I have adjusted almost every parameter that can be adjusted,

But the result seems to be very random,

Even after reboot with the same parameters, there may be different results.

Does this mean that the driver and mining program for RX 6600 are still in an extremely immature stage?


Graphic Card: MSI MECH RX6600 (*112 cards)

Driver: AMD last 3 version (Similar results)

System: Windows 10 21H1

MPT: 1.3.8 beta

Miner: gminer 2.72 - 2.74

What parameters I tested:

DS_*CLJ uncheck,
ACDC Check,
All throttler uncheck,
Memory max 950Mhz,
SoC Power 800-925,
VDDCI 700-800,
MVDD 1100-1200,
SoC Clk 470-850,
GFX Clk 850-920,
FCLK 1570-1800,
GFX VDD Adjustment has no effect
Cross combination of the above....

In addition, the SoC Clock and FCLK cannot be read through tools (HWiNFO64) on Windows, and I don't know if those adjustments are effective.
 
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