Hi, I just thought some of you might find the post I wrote for the corsair forums interesting since it is related to the 1.5 gbps SATA issue, so I copied it below:
I installed the P256 SSD on my brand new MBP 13" 2.53 Ghz on Friday 06/12/2009.
First I booted on the stock 250gb HDD to and downloaded all updates, in case I have to return the notebook, so I can just install the factory drive in perfect condition.
After, I replaced the stock HDD with the P256 SSD; it is fairly simple to do the install if you have some technical skills. I am a dentist, so you don't need to be an engineer to do the swap...
Anyway, did a fresh install after the swap and downloaded all updates and installed all my software. Everything went without any issues.
Once the machine was setup and updated, I tried running it side by side with the MBA Rev. A 1.8 Ghz 64gb SSD it replaces and boy was I in for a sweet surprise... IT IS FAST, VERY VERY FAST... And I was happy like a kid on Christmas morning!!!
Yesterday I found out about the 1.5 Gbps SATA restriction and was obviously bummed about it, ran X Bench and the results are 135 MB/s Read - 95 MB/s Write which are less than spectacular for this drive, although it is not a problem with the drive itself, but the motherboard... FYI my workstation runs the same P256 at 210 MB/s Read - 190 MB/s Write benched from the drive itself which is not ideal.
Now for my opinion, and I apologize in advance if I offend anyone or if I say something technically incorrect. I currently have three P256 SSD's, two of them power my workstation and my wife's workstation which are identical machines: core i7 920, 12gb DDR3 RAM, NVIDIA QUADRO FX 3800 GPU's, dual 30" monitors, running 64bit Windows 7 RC. The third P256 is on my MBP 13" as mentioned before. Obviously all three machines are extremely fast. The workstations are faster when it comes down to very resource hungry applications like AutoCAD and 3DS Max, but they have $900 graphics cards and where built for that kind of work and are full size workstations comparable to the new MacPro Tower, albeit running windows because of software compatibility.
As far as regular activity (Word, Excel, file copying, downloading, copying within the network) I can not tell the difference between the $5000 workstations and the $1399 MBP 13" with the P256 SSD except when I copy large files from one workstation to the other which is a bit faster; however the workstations are wired while the MBP is wireless into the same network.
The last thing I did was install the stock HDD back into the MBP and try it around, and I can honestly say, you can feel the difference without the SSD; so I happily installed the P256 SSD back into the MBP 13" and typed this post. I would have to test a machine like my MBP 13" with a 3.0 Gbps interface to see if there is a noticeable difference, otherwise I would just be speculating. The point is the MBP 13" with the very fast Corsair P256 SSD is very fast for everything I have thrown at it, although I guess it could be faster if it had a 3.0 Gbps enabled SATA port to connect to...
Hopefully the 1.5 Gbps issue is firmware correctable by Apple and not hardware related. Personally I do believe labeling this machine a Pro without a 3 Gbps interface is unfair specially when the previous non-pro model had a 3 Gbps interface, but at the end of the day I will still be reading replies to this post from a machine that I personally think is spectacular!!!
Maybe Apple will give us a surprise update and make this machines beyond spectacular and into the realm of perfect by magically enabling 3.0 Gbps through an update thus rewarding those of us who are earlier adopters and spent considerable amounts of money on their products...
Just my two cents...
P.S. I will probably get flamed for this, but I see a lot of people arguing over technical issues and the fact that some may care about the 1.5 Gbps cap and others would never notice, etc..
I though we where all here because we care and want to find solution? Shouldn't we unite and confront Apple instead of fighting each other?