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[Anand] OCZ Vertex 3 Preview: Faster and Cheaper than the Vertex 3 Pro - Page 2

post #11 of 13
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Quote:
Originally Posted by PhaedraCorruption View Post
Does this mean the non "pro" version of the Vertex 3 will only support Sata 3Gbps?
The option is there but I extremely doubt OCZ will use this version.

Look at the chart.... SandForce is trying to differentiate their product.
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post #12 of 13
Dang OCZ's SSD's are getting fast.
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post #13 of 13
Quote:
Originally Posted by DuckieHo View Post
They are wrong:
1) We have the PCB shots and can see the number of NAND chips
2) SandForce themselves state there are eight channels: http://images.anandtech.com/reviews/...3/sflineup.jpg
Lower capacity drives may utilize less channels (for instance OCZ Vertex 2 Extended 60GB right now only uses 4-channels). They are testing the 240GB version which does use 8 channels (based on my understanding) where as lower density drives with 25nm NAND currently use less than 8 channels but will not continue that trend to Vertex 3. This does not preclude my comment on comparing apples and oranges by pitting 240GB SATA3 drive vs. 120GB SATA2 drive as the amount of NAND is totally different.

Quote:
Originally Posted by DuckieHo View Post
I know that 25nm NAND have lower PE cycles due to smaller processes results in weaker channels. Anand hinted that Micron's NAND is 3000 while Intel is getting 5000 from their joint venture. Does someone from the OCZ forums have the spec sheet and can make it public?
As far as making spec sheets public, good luck ever getting that from OCZ. With that said, I would think that they know They have stated that they are supposedly using Intel 25nm NAND and that it is rated for 3000 PE cycles. That is why they have increased RAISE over-provisioning significantly and the new drives have much lower capacity, specifically in 120GB variants and below. Higher capacity drives will not see this size difference (supposedly), but they are still using greater amount of NAND for over-provisioning. Adding to this they would not dare get into another fiasco where drives with same part numbers use different type of NAND with different capacities and PE cycles, not even getting into any performance discussions.

Quote:
Originally Posted by DuckieHo View Post
Intel or IMFT?
Intel as far as I've been told. I have no plans to rip-open any of my 25nm drives any time, and besides all of them have been shipped back for a replacement to 34nm

Quote:
Originally Posted by DuckieHo View Post
Is the SandForce SF-1xxx optimized for ONFI 2.0 NAND?

i.e. The Indilinx Barefoot controller had to be refreshed with the Barefoot Eco for 34nm migration.
I do not believe so. I think that this is where OCZ is claiming that they can regain some performance through firmware updates for their 2-series drives.

Anyway, this whole thing is a freaking gong-show. Yes, the new drives will perform better, there is no doubt about that, but even on OCZ forums their own testers have indicated that unless you are running SATA 3 you have no reason to upgrade from 2-series drives as you will see next to no performance increase. Mushkin has indicated that they will not even move to 25nm until much later, and are sticking with 34nm for now. They will be releasing their new drives based on 34nm, at least for the time being.

25nm NAND is lousy, by every measure. That's a fact. Only benefit to 25nm is lower manufacturing costs and therefore higher profit margins. The goal is simply to make drives "more affordable" to the public while maximizing profit. This is an unrelated comment to Vertex 3 performance or anything, just commenting in general...
Edited by dejanh - 2/25/11 at 10:13am
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