I'll say this to start off with, every device has a "write limit", it's called when it dies. Given the assumption you treat your gear properly an SSD should last as long as any normal HDD. The first gens were supposed to die quickly due to this "write" nonsense, but last time I checked the guy who has mine says it still works without speed loss.
I'll follow that up with, no, a RAID 0 setup wont match the quickness of an SSD in HDD form because access/seek times and overall latency is so much lower as well as IOPS. You might be able to beat out 175MB/s write in raw speed but then again you have to realize the specs you are looking at are sequential. They aren't sustained speeds.
Now I'll say this, Intel had some of the slowest SSDs next to Crucial until their latest batch of releases. Even still, I'll use these 2 as an example of what I meant up there ^^ in SSD form.
Newegg.com - Intel 330 Series Maple Crest SSDSC2CT060A3K5 2.5" 60GB SATA III MLC Internal Solid State Drive (SSD)
Newegg.com - SAMSUNG 830 Series MZ-7PC064D/AM 2.5" 64GB SATA III MLC Internal Solid State Drive (SSD) Desktop Upgrade Kit
The Samsung is 10 dollars more with sale
price, but initial pricing is the same. Take a look at specs, the Samsung has 4GB more than the Intel but slower sequential write. Well, on any drive we want to reduce the amount of writes so we look at read speeds which is what you do 90% of the time. Sequential read is higher on the Samsung but look at the IOPS difference. I guarantee you'll actually "feel" faster on the Samsung every day rather than having a faster write speed on the Intel. Not to mention before sale price they are the same and the Samsung is actually bigger. The same can probably be said for probably any Intel SSD (I'm not going to compare all specs) besides maybe the 520. Even still from what I've seen IOPS on the 520 series still is around the 20k mark. It makes a huge difference and you want IOPS to be as high as you can get which is why OCZ were making Max IOPS versions of their SSDs.
"Resolution is just a number." #Ubisoft Origin/Steam
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