About 60D SD writing speed limits

[tankvps]

Hello, all.
After searching this form a while. I found that the SD card writing speed is limited to about 20MB/s by 60d hardware. So this low spead make it's very hard to use the raw_video module.

I'm wondering how the 60d hardware limits the writing speed. It's there any way that we can use to bypass this limits?(as 650d is about 40MB/s)

Thanks.

[a1ex]

If you have a 486 processor, is there any way you could turn it into a Core i7?

[tankvps]

If you have a 486 processor, is there any way you could turn it into a Core i7?

Thanks for reply.

So this limits is caused by sd card interface that canon used? Just like the difference between sataII and sataIII?
Is there any way we use USB output instead, which I mean use the usb port of 60d.(if 60d's usb port can be used as host)

[a1ex]

Is there any way you could use the search function?