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post #21 of 28
Quote:
Originally Posted by hydropwnics View Post
Says C300 write speed is 75mb/s that seems kind of slow compared to a lot of the other SSD's out there right now, does that make a big difference? I know boot speeds / loading games is mostly read speed.
Not really. 95-98% of what most people do is reads. When you're installing stuff it's slower - but so what? It's still 2-5x faster than a HDD can manage...

Btw, the C400 is also called the "M4".

Quote:
Originally Posted by hydropwnics View Post
Hmm... I'm going to stick with my C300/C400/M4 recommendation. They're on sale constantly for $90 or less.

Quote:
Originally Posted by hydropwnics View Post
it claims to have

Sustained Sequential Read
up to 285MB/s

Sustained Sequential Write
up to 275MB/s

thoughts anyone?
It is slower than the Crucial SSDs I mentioned. Aside from that, it's probably a fine drive. It makes no indication of using the new 25nm NAND. (which has had issues... )

Quote:
Originally Posted by hydropwnics View Post
just found this on xtremesystems

they look pretty fast in RAID 0 with 2 drives
Awful access times. Aren't most SSDs close to 0.1ms? 0.4ms... four times slower.. but still great for bragging. I really doubt that RAID array would feel any faster than a single drive. It might even feel slower.

See, with HDD RAID, you take two drives with ~13ms access times and get them to work together. Drives may be slightly different, but access times rarely vary more than 1ms. (under 10%)

With SSDs, you're dealing with drives that could return data in 0.06ms, 0.1ms, 0.14ms, 0.30ms, or 0.58ms. (random amounts of time) It changes hundreds of times per second, and depends entirely on which chip the data is stored on. Need two pieces of data on one chip? It'll take way longer than if stored on two or three chips. And because of wear levelling, you'll never know where a piece of data is stored.

So now you've got two SSDs in RAID. Their access times do not vary by less than 10%. One SSD might return data in 0.06ms, while another returns data in 0.58ms... until 0.58ms are up, both drives are busy, so one drive loses 0.52ms of time it could've been reading/writing. This negates much of the benefit of SSD RAID. Then the next read or write it's reversed.

The difference in access times could be as high as 1000% - every time one drive is sitting idle for long periods, you're losing the advantage RAID provided. But this only applies to smaller reads/writes, and this will change over time. As daily tasks start to require ~1GB/sec of I/O bandwidth, faster SSDs and SSD RAID will clearly feel faster. But for small reads/writes in the meanwhile, SSD RAID is not the answer for getting the most responsive system out there.
     
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post #22 of 28
Good job Kramy, I don't know much about ssds and didn't want too tell him anymore than I knew, which was pretty much get c300, m4, anything intel, or a vertex 2.
    
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post #23 of 28
please don't get 2 vertex 2's... it's a terrible suggestion as they are not even sata3.. IMO get 2 60GB OCZ Agility 3's as they are quite cheap now!
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post #24 of 28
Thread Starter 
kramy, thank you so much for clearing up a lot of the questions I had (+REP), I was hoping someone would give a detailed response like that, maybe I'll go for the

Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)


Other reason I wanted to RAID 0 those drives was for the space, so maybe I'll go with this drive its $229 on newegg

<.1ms seektime
and
Sustained Sequential Read Up to 415 MB/s (SATA 6Gb/s)
Sustained Sequential Write Up to 175 MB/s (SATA 6Gb/s)


EDIT - Also another question about config

I've read most SSDs have to have mobo set to ACHI - My F3's are on RAID 1 so my SATA ports 1-4 on my mobo are set to RAID not ACHI - and my SATA ports 5-6 are set to IDE because I have an optical drive on 5 and my mobo manual said its best to have it plugged into 5or6 set to IDE for OS installation. How would I go about adding to SSD to my already setup RAID 1 config. I know I don't even have my SSD yet but I'd like to research this a bit so when i go to install it I know how to set things up
Edited by hydropwnics - 6/16/11 at 6:23am
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post #25 of 28
Good choice.

Edit:

There's a number of ways to go about it, but this is what I'd do. Also, read the stickeys on ssd setup and decide what will work best for you as far as setting the drive up after you install the OS.

Plug the ssd into 1 - 4 and leave as raid.

Also, you don't have to, but you could unplug the power to your two F3's to simplify OS install.

Install OS to the only drive it sees - the ssd.

After you're up and running, plug your f3's back up and set the bios hd boot priority so that it looks at the ssd first.

Then you can boot OS and delete what you no longer need from the array.
Edited by PARTON - 6/16/11 at 6:39am
    
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post #26 of 28
Thread Starter 
Quote:
Originally Posted by PARTON View Post
Good choice.
Just gotta get my next paycheck then i'll be set
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Hydropwnics
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post #27 of 28
Thread Starter 
Quote:
Originally Posted by PARTON View Post
Good choice.

Edit:

There's a number of ways to go about it, but this is what I'd do. Also, read the stickeys on ssd setup and decide what will work best for you as far as setting the drive up after you install the OS.

Plug the ssd into 1 - 4 and leave as raid.

Also, you don't have to, but you could unplug the power to your two F3's to simplify OS install.

Install OS to the only drive it sees - the ssd.

After you're up and running, plug your f3's back up and set the bios hd boot priority so that it looks at the ssd first.

Then you can boot OS and delete what you no longer need from the array.
thanks
Hydropwnics
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Hydropwnics
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post #28 of 28
Thread Starter 
so i ordered my Crucial M4 128gb drive, comes tomorrow from newegg, thanks for everyones help in making a decision on my 1st SSD
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Hydropwnics
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