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vintage chipset and ssd

  • Thread starter Deleted member 82943
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Deleted member 82943

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I've got a shuttle Shuttle SD37P2 which I believe has a 975x chipset. The bios says that the controller supports AHCI but the x25-m G1 ssd that I'm using gets terrible write speeds and pretty good read speeds (> 200 MB/s at burst).

Is this a shuttle thing? Or a chipset thing?

I'm not hell bent on the SSD, I could sell it and get a larger but quiet hdd...It'd just be nice to have the benefits of teh SSD because the box was to be just an average but really responsive gaming box
 
well im not sure of the chipset, but the big mb/s numbers arent very important to daily computing.

Latency IS. that is what will benefit you the most. With the faster latency, you will still be faster than any HDD could ever hope to be on that, or any other, chipset.
 
yeah this is true, but the write speeds are terrible < 20MB/s... it's as if AHCI is off but in the bios it's clearly on.
 
have you updated chipset drivers? write back enabled? have you changed the power settings, disabling all sleep/hibernation?
 
oooh you know what I may have neglected those, maybe even installed the wrong drivers... I didnt even bother to check writeback, and the hibernation stuff.

i will look into those as soon as Im with that box thanks man!
 
sure man, power settings really affect the performance of the SSDs, strange that, but it holds true.
also, make sure to run "winsat disk" manually from the CMD prompt. this is the method that Winders uses to detect an SSD. upon detection it will treat the drive differently, allowing you to get better performance from your SSD.
in rare cases, if the SSD is configured improperly, winders will not detect it upon setup. So....running this will force it to detect it *after* you have done some of these basic optimizations.
remember, SSDs still do take a tiny bit of tweaking for max performance. not near as much as they used to, but still a small amount.
to run winsat incase your not sure:

Elevate CMD prompt to admin status,
type in;
winsat disk

then do us a favor, post a screenie of your result there, and maybe we can help you a bit more. oh and AS SSD if you have some spare time :)
 
sure thing i hope to have a chance tomorrow, the box is at my buddies place
 
Speeds less than 20 MB/sec probably aren't down to just AHCI being off - it should still do better than that on IDE mode. I'd guess chipset drivers, or something else. One way to see if AHCI is really on is see if NCQ is active, since that required AHCI - HD Tune should tell you on the info page. Have you tried doing a secure erase of the drive?

http://cmrr.ucsd.edu/people/Hughes/SecureErase.shtml
 
i havent. what i should do is do a low level format to align the partition. will secure erasing do that?
 
A secure erase will erase everything on the drive including partition information, so do that first, then install the OS. If you are using Win 7 it will correctly align the partition itself, if you are still using XP than you'll have to make sure it is aligned (partition it first with something else might be the easiest way). Don't do a low level format - that is what the secure erase does (but for SSDs).
 
ok i'll secure erase it then, you guys are awesome

i googled a lot and found no real direction, thanks for the peace of mind.
 
gonna try and swing by today will update when I can
 
I think i am cpu limited in team fortress 2...and possibly the cpu cant keep up with the ssd

here are the benches tho



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should i get a controller or just be happy with it?
 
something is buggered, but it's not likely the controller. Connect a mechanical SATA drive to it and run your benches and you'll see that the port is capable of much more than 30MB a second. I'm not sure but misaligned partitions on the SSD or write caching not being enabled seem like good possibilities.
 
should that say intel ahci? is it the driver? i'll try hardware in the morning, try moving ports

installing the latest RST driver from intel saw read speeds go up seq 5MBs but seq write speeds fall to 20MBs arrg
 
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i get slower writes with iostor (intels driver) but faster reads... im so lost
 
picked up an x1 pci-e controller just to rule out the controller on the mobo here's what i found



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