ZiG, I saw a post where you had said you were able to run up to 1000MHz stable with the thermal mod above. Is that without doing any of the voltage mods? TIA
Yes, buddy...
This is what I am doing first...test them as they come...stock...no mods...@850MHz ...to check how good are they...each one...

Second...: Apply the thermal mod...Paste...new, thicker, better thermal pads...shims, if nesessary...TEST again...Most of them are going to 950 min...1000Mhz...NO volt mods yet...!
Out of 10 => 4 @ 1000...4 @975...1@950 ...1 slacker @925MHz ...NO HW errors...this is my belief that every HW error is lost...non submited...unpaid work...this is like your miner STOPPED for this period of time...5-10-15 min...so I opted for NO HW errors at all...
Voltage mod next...I am using my own...Test again...etc...
Capisco...?...

It is just me...you could create your own test/mod...
Cheers...Beer here...