I saw this error when downclocking memory too far..
How far down is too far ?
I am running 300Mhz Mem Clocks on 15 7970s and have not had a problem...
A small performance loss, but the power (and heat) savings more than makes up for it.
CGMiner 2.4.2 (for GPU Clock control and mining, of course), using Afterburner for MEM Clocks and Voltage Control.
GPU 0: 67.0C 3260 RPM 55% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 564.9 / 565.4 Mh/s | 99% Load | A:3077 R:27 HW:0 U:7.87/m I: 9
GPU 1: 67.0C 3300 RPM 55% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 567.8 / 568.4 Mh/s | 99% Load | A:3021 R:19 HW:0 U:7.72/m I: 9
GPU 2: 68.0C 2905 RPM 53% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 565.7 / 566.3 Mh/s | 99% Load | A:3124 R:32 HW:0 U:7.99/m I: 9
GPU 3: 67.0C 3118 RPM 49% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 567.9 / 568.4 Mh/s | 99% Load | A:3022 R:29 HW:0 U:7.73/m I: 9
GPU 4: 67.0C 3345 RPM 56% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 568.0 / 568.5 Mh/s | 99% Load | A:3174 R:20 HW:0 U:8.12/m I: 9
----------------------------------------------------------------------------
GPU 0: 67.0C 3542 RPM 58% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 566.0 / 566.3 Mh/s | 99% Load | A:3144 R:23 HW:0 U:8.03/m I: 9
GPU 1: 67.0C 3158 RPM 55% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 566.5 / 567.0 Mh/s | 99% Load | A:3109 R:25 HW:0 U:7.94/m I: 9
GPU 2: 67.0C 3298 RPM 54% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 569.0 / 569.2 Mh/s | 99% Load | A:3096 R:19 HW:0 U:7.91/m I: 9
GPU 3: 67.0C 3483 RPM 57% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 568.9 / 569.2 Mh/s | 99% Load | A:3066 R:18 HW:0 U:7.83/m I: 9
GPU 4: 67.0C 3511 RPM 58% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 568.5 / 569.2 Mh/s | 99% Load | A:3109 R:20 HW:0 U:7.94/m I: 9
----------------------------------------------------------------------------
GPU 0: 67.0C 3180 RPM 51% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 565.5 / 566.2 Mh/s | 99% Load | A:3077 R:17 HW:0 U:7.87/m I: 9
GPU 1: 67.0C 3219 RPM 55% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 565.3 / 565.7 Mh/s | 99% Load | A:3136 R:21 HW:0 U:8.03/m I: 9
GPU 2: 68.0C 3351 RPM 56% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 565.8 / 566.2 Mh/s | 99% Load | A:3090 R:16 HW:0 U:7.91/m I: 9
GPU 3: 67.0C 3433 RPM 57% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 565.7 / 566.2 Mh/s | 99% Load | A:3112 R:21 HW:0 U:7.96/m I: 9
GPU 4: 67.0C 3185 RPM 52% Fan | 960 Mhz GPU 1.02 V 300 Mhz MEM | 565.4 / 566.2 Mh/s | 99% Load | A:3011 R:20 HW:0 U:7.71/m I: 9
This is simply a copy/paste from my monitoring app, with proper voltage levels added for reference.
Today (when I took this copy/paste selection above) has been the hottest day this year, for my miners...I am sweating, just standing in front of them yet they are hardly breaking a sweat.....
) and stability is compromised. Looks like at this spread, some BIOS/H/W triggers are tripped.
