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Sata 2 vs Sata 3 in Mb/s speed?

post #1 of 4
Thread Starter 
Hi everyone.

I had a quick question which I thought I knew, but maybe I don't. I was interested in purchasing a SSD for my laptop as I have a 5400 in it currently, horribly slow. From browsing around, it seems like Sata 2 could handle 500 Mb/s speeds no problem.

However, just browsing around Newegg.com, some drives show speeds of 500 Mb/s on Sata 3, but half that (280 Mb/s) on Sata 2. Is that an accurate statement, that Sata 2 can only handle about 200-300 Mb/s?

And is there any way for me to tell if my motherboard actually supports Sata 3? I could probably take a peak into the BIOS but I'm not sure if there is an easier way. Thanks! -Jeff
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveCoolingOS
Samsung Evo 840 SSD and 1 TB WD Asus DVD-RW Corsair H50 Windows 7 64 
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Asus 24" Corsair 850 Mod Azza Solano 1000R Old school Microsoft 5 button 
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post #2 of 4
Yes. And you could either take the model number and google it or open her up.
    
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post #3 of 4
Thread Starter 
Gotcha. I think regardless I'll stick with Sata 2 as this is just a internet laptop. Don't need anything crazy, and 200-250 will b far better then my nice little 5400 rpm drive. My laptop model is extremely new, so there isn't much info out on it at the moment.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 @ 3.5  Asus Rampage III Formula Galaxy GTX 670 OC Corsair Dom 6 Gig 1600 
Hard DriveOptical DriveCoolingOS
Samsung Evo 840 SSD and 1 TB WD Asus DVD-RW Corsair H50 Windows 7 64 
MonitorPowerCaseMouse
Asus 24" Corsair 850 Mod Azza Solano 1000R Old school Microsoft 5 button 
  hide details  
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 @ 3.5  Asus Rampage III Formula Galaxy GTX 670 OC Corsair Dom 6 Gig 1600 
Hard DriveOptical DriveCoolingOS
Samsung Evo 840 SSD and 1 TB WD Asus DVD-RW Corsair H50 Windows 7 64 
MonitorPowerCaseMouse
Asus 24" Corsair 850 Mod Azza Solano 1000R Old school Microsoft 5 button 
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post #4 of 4
Don't look at these numbers like 280MB or 500MB. These're sequential speeds (transfer of large files) and are not useful comparison figures at all - just marketing! What really matters for an SSD is 4k speeds (transfer of small files) and this is what's important for OS operation. Crucial C300 is still the leader in terms of 4k reads. And C300 (SATA III) also rocks even when connected to SATA II controller. But it's pricy compared to SATA II SSDs, so it's up to your budget. Good luck.
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