Fan shape and efficiency

Hi everybody!
I'm doing some research about fan upgrading.
My notebook comes with the first one. But I think the other model should mechanically fit my notebook.
Mine is rated for 5V and 0,36A, while the other is rated for 5V and 0,5A.
Which one do you think should provide more airflow, also considering the different shape and design?
Thanks!

 

The second one will probably give more air simply because its a higher amp rating.

Shape <> airflow so shape alone is no guide.

 

I'd check the manufacturers website for each fan to see the specific CFM and dBA they quote. Current rating could indicate better airflow, more inefficiency or more noise, for instance.... who knows without researching?
These kinds of discussions are a bit backward IMHO. Is there a tangible problem you are trying to solve here such as over heating or noise, otherwise why not just use the fan the original manufacturer designed the machine with?

 

Thank you guys!
On the forecon site I'm unable to find the radial fan (mine). However, I've read that in general radial fans are noisier because they need to run at higher rpm. So I thought I might give a try at the other one: at least, even if it didn't allow better airflow (and with more amperage I think it'll probably do allow better airflow), it'd be more silent. Mine is very noisy: it's very well hearable even at idle, while at full load it becomes very loud.
Now that I've swapped the cpu with an extreme edition I'd appreciate a more capable cooling solution: better cooling = more overclock!
The amperage is 39% higher, so I think I could give it a try, also considering how cheap these fans are on the ebay. Worth the try!

 

although the difference between 0.36A and 0.50A might seem insignificant, make sure your laptop's motherboard can output the higher current.

 

Mmh, you're right. But how can I check? I'll take a look at the motherboard, in case they've written the amperage near the fan's plug.