Definitely. Though GPU mining will be a thing of the past in about 1 month, if the ASICs turn out not to be vaporware.
Could you people just STFU for a while - or forever - with that "very useful" info? Not everyone coming here cares about
profitability of mining. The same fucking way you were suggesting "go pools" for years, which resulted in most miners now
having no clue how to setup solo mining, that same way you'll make many never learn about how to even setup miner.
The OP clearly was concerned about profitability as expressed in his very second sentence
Quote
Is it enough for mining at a decent speed?
He further proposed buying a new graphics card for the express purpose of mining on an old secondary PC.
I am not going to go ahead and advice OP to "yeah sure, you just do that" and have him either reduce the lifespan of
his laptop significantly or spend an absurd amount that he has no chance to ever regain in the current mining
environment, just for some obscure 5 minute learning experience (which is as long as it took me to set up my miner
and it only took that long because the first particular download was corrupt) .
Laptop with 2gb graphic card 
so if it has 4gb it is better? 
