Does GPU litecoin mining burn graphics cards?

[sgravina]

I noticed this morning that mining litecoins could be more profitiable than mining bitcoins.  So I finally tried to GPU mine litecoins on my PC using cgminer.

I have 2 5870s in a windows 7 machine.  I turned on the mining at intensity = 10 and got 170 kHashes/second.  Then I tried intensity = 16 and got 800 kHashes/second.  But at intensity = 16 I could smell warm carbon, the smell you get when you burn a resistor.  The GPU temperatures only got to 75 degrees.

So I turned that off!

Does litecoin mining burn graphics cards?  Are my settings too aggressive?

I'm back to bitcoin mining and the cards still work.  These two cards have been bitcoin mining at engine clock = 940 MHz, memory clock = 300 MHz for over a year.


Here is the command I used:

Code:

cgminer-2.11.0-win32\cgminer ^
--scrypt ^
-o localhost:9332 -u username -p password ^
--auto-fan ^
--shaders 1600 ^
--worksize 256 ^
--intensity 16 ^
-g 1 ^
--gpu-memclock 1300 ^
--gpu-engine 940 ^

[nethead]

i bet it was your psu

[tacotime]

Not as far as I know, never had an AMD card ever fail on me though and I've had 20+ in the past 3 years.  Been mining litecoin for 6 months with four cards, no failures.

[sgravina]

i bet it was your psu

That makes sense.  Power supplies have a lot of resisters in them.  Graphic cards don't.  Does litecoin mining draw more power than bitcoin mining?

[tacotime]

Depends on your voltages and your clocks.  At stock volts/clocks, yes.

[philips]

Memory chips get hotter also in LTC mining.

[ChanceCoats123]

i bet it was your psu

That makes sense.  Power supplies have a lot of resisters in them.  Graphic cards don't.  Does litecoin mining draw more power than bitcoin mining?

You don't know very much about computer circuitry, do you?

I can't tell you exactly what it was, but memory clock is probably the culprit. Resistors don't just burn. If they do, then the circuit would no longer be complete, and your hardware would be unquestionably dead.

[baggyp]

the real problem is that you don't understand the difference between sha-256 mining protocol and scrypt mining protocol. setup OC settings specifically for LTC and turn your core to stock and your memory to 1.2 times that.

Now, show us your config files as well as your OC settings.

I run my 6970 underclocked and undervolted and it still mines 500kh/s +