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Slow Speeds with Corsair Force Series 3 180gb SSD - Page 2

post #11 of 14
Quote:
Originally Posted by zobbyblob View Post

Quote:
Originally Posted by mcg75 View Post

What make and model of motherboard do you have?

I have a X68A-UD3R (revision 2) How can I tell the difference between Marvell ports and SATA 3 ports? I thought I was using a SATA 3, but I'm no longer sure.

EDIT:
I got it guys, I read through the manual and learned that all my SATA 3 ports were GSATA 3 and controlled by Marvell, but my SATA 2 ports are the other type (ICH?), but I'm hitting the SATA 2 transfer cap.

Looks like I need a new mobo with ICH SATA 3 ports.

Yea, the ICH are the Intel SATA 2 port connections. Use the Intel SATA 2 b/c TRIM is not supported on Marvell and the 4k reads are faster on Intel.
post #12 of 14
Thread Starter 
I ran benchmarks on both the ICH SATA 2 and the Marvell SATA 3 and the write speeds were equal, but the read speeds on the ICH SATA 2 were about 225 mb/s and the read speed with it in a Marvell SATA 3 port was around 400mb/s.

Any idea why that would be if ICH is supposed to be faster?
post #13 of 14
Quote:
Originally Posted by zobbyblob View Post

I ran benchmarks on both the ICH SATA 2 and the Marvell SATA 3 and the write speeds were equal, but the read speeds on the ICH SATA 2 were about 225 mb/s and the read speed with it in a Marvell SATA 3 port was around 400mb/s.

Any idea why that would be if ICH is supposed to be faster?

Post up screen shots of AS SSD of each and we will decide from there smile.gif

You are going by sequential reads vs what you should be going by is 4K reads. Also Marvell doesn't support TRIM on your SSD which will have it run slower as well over time.
post #14 of 14
Quote:
Originally Posted by zobbyblob View Post

Thank you so much for the fast responses! I will try this tomorrow. The SSD also isn't my bootable drive, it is only used to hold games. Is ACHI drive specific, if so, should I enable it for my other drives (regular HDD's)?
Is there a difference between SATA 3gb/s and 6gb/s if the ssd is only rated for 500mb/s?

It's Sata 6 Gigabit/s while your drive is rated for 500 megabytes/s. That may not look like a major difference but a byte is made of 8 bit so the Sata 6Gb/s (with a lower case b) is actually a Sata 750S MB (with an upper case B) and Sata 2 is Sata 375 MB/s. In real life though, these speeds cannot be reached as the interface is not perfect and it's actually about 75% of the theoretical bandwidth that is used.
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My Gaming Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 2500K @ 4,5GHz - 1.296 volts MSI P67A-GD55 Asus Strix Geforce GTX 970 4GB Mushkin Enhanced Silverline Stiletto 2x4GB 1333... 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 7200.12 1TB Seagate Barracuda 7200.12 500GB Toshiba HDKPC08 3TB Samsung 840 Evo 120GB 
CoolingOSMonitorKeyboard
Corsair Hydro Series H60 Windows 8.1 Professional x64 BenQ G2420HD 24" 1920x1080 IBM Model M2 French Canadian Layout '93 
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