On Jun 20, 8:45*pm, "BillW50" <Bill...@aol.kom> wrote:
> Innews:39a6bb75-f5dd-4816-a21c-aac61cc52d7a@y10g2000prc.googlegroups.com,
> Roy typed on Fri, 19 Jun 2009 15:52:22 -0700 (PDT):> On Jun 20, 2:09 am, "BillW50" <Bill...@aol.kom> wrote:
>
> Innews:d2e54351-eee5-49ff-b1ca-6168514fa4af@u10g2000vbd.googlegroups.com
> ,
>
>
>
>
>
> >> Roy typed on Fri, 19 Jun 2009 04:42:48 -0700 (PDT):
>
> >>> On Jun 11, 8:39 am, "BillW50" <bill...@aol.kom> wrote:
> >>>> Got me there Roy. I never tried that.
>
> >>>> Bill
>
> >>> Sorry Bill, just my keen interest to know how far with the SSD could
> >>> go with regards to performance.
> >>> Anyway I am looking forward in getting a core i7 run, triple
> >>> channel RAM ,desktop replacement system by the end of the year with
> >>> one SSD among the hard drives.....
> >>> Regards
> >>> Roy
>
> >> Remember there are fast SSDs and slow SSDs, just like HDD Roy. So
> >> choose carefully. I am also thinking of upgrading one of my 702G8
> >> with a 16G SSD. I don't need one that big yet, but I am curious to
> >> play with one. Although it seems the SLC types are quickly being
> >> replaced with the MLC types.
>
> >> Bill
>
> > Huh? really...could you please tell me about it...
> > I thought that in solid state structure everything is simplified<grin>
> > Never did thought about the *SLC and MLC, .....
> > Could you please elaborate .....
>
> http://www.storagesearch.com/ssd-slc-mlc-notes.html
>
> Basically, SLC stores 2 bits per cell, while MLC stores 4 bits per cell.
> A MLC costs half as much as a SLC is to produce. So what's the downside
> of MLC?
>
> Their lifespan is a tenth of SLC types. Also an area has to be erased
> first before it can be written too with MLC types. So at first, your MLC
> can appear very fast. As all areas has been erased already. And writing
> to the MLC, will use up all of the erased areas first. Thus the speed is
> doing quite well right now.
>
> But at some point, all previously erased areas will be all gone. Now
> before a write, it must now do an erase cycle before any new writes. Now
> the write speed of the MLC type goes down the tubes. As your write speed
> can be halved or even far worse.
>
> You would think they would have the controllers busy using the erase
> cycle during idle times to make more quickly writable areas. But they
> just don't do this as far as I know. Thus you can avoid all of this by
> getting SLC types. But SLC types are quickly disappearing and are being
> replaced by the cheaper MLC types. Worse, the manufactures are now
> hiding whether it is a MLC or not. <sigh>
>
> --
> Bill
> Windows 2000 SP4
> Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC- Hide quoted text -
>
> - Show quoted text -

Thanks for that valuable information Bill!
I keep that in mind...