3g SATA vs. 6g SATA or SSD


When I built my new Windows 7 64-bit machine a few weeks ago I installed as my main drive a WD 7200 RPM Sata 3 500 gb drive. I find it rather noisy, is it considered a "cheap" HDD or do they all crunch away? I remember years ago having a Maxtor drive that I could hardly hear when it was reading and writing, although I think it had glass platters, and Maxtors seem to fail a lot from my past experiences.

Anyways, I'm wondering if there is any performance improvement going with a 6g SATA over my current 3G sata drive or if I should just wait and get and SSD as my main drive. Can someone give some advice?

Thanks :)
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  1. The choice of 3Gbit/sec SATA vs. 6Gbit/sec SATA makes no difference for a hard drive because the platters don't spin fast enough to get anywhere near even the 3Gbit/sec data rate. It's like riding a bicycle on a highway - you're not going to be able to go any faster in a 60mph zone than in a 30mph zone if your maximum pedaling speed is only 20mph.
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