ASIC mining and reject errors

[wuzamarine]

I have 2 butterfly 5 gigers and I am playing around with altcoins and notice that some sha256 altcoins work and some get rejected errors. What is the difference, and can a modification in cgminer's config file tweak it to work?

[pvaladares]

Generally, if you cool better your ASIC it will get less Hardware Errors.
For altcoins you may mine simultaneously Bitcoin and Namecoin under BTCGuild just to mention an example.

[wuzamarine]

Bitcoin is saturated, this is why I am looking into altcoins. But I can connect to a ppcoin pool and start upchucking hash right away, but if I connect to mooncoin, 100% rejects.
I honestly don't think it's cooling.

[pvaladares]

From what I understand you have to mine altcoins that use only the SHA256 algortim.
You may check this list https://bitcointalk.org/index.php?topic=134179.msg1428895#msg1428895

[wuzamarine]

From what I understand you have to mine altcoins that use only the SHA256 algortim.
You may check this list https://bitcointalk.org/index.php?topic=134179.msg1428895#msg1428895

Correct. Some work with asics, some do not. I am curious way and how to tweak it so it will work on all.

[Henle]

Moon is Scrypt, not SHA256.  You can't mine Scrypt with an asic.

[Henle]

You can look at the list of coins on coinwarz.com (http://www.coinwarz.com/cryptocurrency)  just scroll down.  On the far left it shows which ones are "Scrypt" and which ones are "SHA-256".  The SHA256 are pretty far down the list because they have a higher difficulty compared to their value (so less profitable) (simplified explanation).

The flip side is there are no asics for Scrypt yet, so you have to use one or more high end AMD GPUs to mine efficiently.