Performance on pcie sata controller


#1

I have tested two pcie sata controllers with chipsets by asmedia and jmicron with two optical drives connected on each and latest drivers installed. When performed a transfer rate test (or performing a write or a verify operation) simultaneously on both drives they could not reach full speed. Is this something expected?


#2

It´s not unexpected :\

I had this prob with JMB363. If I used one SATA-drive the drive often burned 4x instead of 16x. One time I burned with 2 SATA-drives I needed over 30 Min to burn a SL-DVD.

Other problems can also happen, my BH16NS40 freaked totally out on one controller, stopped writing and let hang up the PC x-times

Note: It´s not happen with every JMB, some cards worked, some not. Firmware was the newest I get for it

The cards which works best for me are older cards with Sil-Chips


#3

I have a Silicon Image SATA 1 pci card which performs in the same manner. I was expecting better performance from ASMedia SATA 3 pcie cards.


#4

I have PCI and PCIe-cards with Sil and all perfomed well for optical devices; but I´m not sure if I often try to use 2 drives at same time which are connected to same controller

Even SATA1 is much faster than 16x BD-drives need.

But some PCIE-cards simply don´t work good with some mainboards. One of my Marvell let my Gigabyte-Board don´t boot, my ASM causes Bluescreen on Hot Plugin


#5

Could you try to use two drives at the same time? On the Intel on-board SATA controller all connected optical drives (I have three currently) can be used simultaneously with no slowdowns.


#6

Do you have speed problems with read and write or only write?

Here´s a read test, both drives at same time on a Sil3124 PCIe x1 port, B150-chipset with a Celeron G3900


#7

I noticed the problem while reading, but I think the same will happen while writing. I tried the latest drivers with no luck and I don’t see an option in the bios that could affect this.


#8

You see, this combination works for me. But Sil is hard to find atm, JMB and Marvell is easier, but also more problematic

In my other PC I have an IBM Serveraid M1015, flashed to LSI 9211i, it worked also good for me with ODDs and HDDs, but not so good with SSD


#9

I will try again the Sil3112 pci card that I have, but I doubt that it will work better. Tried it and read speed is really slow about 3-8X even with one drive connected.


#10

That´s bad. Does it have a Raid or Non-raid-FW?

An other prob is the actual Mainboards don´t have native PCI-slots, PCI is connected via Bridgechips


#11

Raid I believe.


#12

Maybe it´s not optimal for ODDs?

I flashed all my Sil-cards to Non-Raid, when it was possible. Some cheap cards can´t flashed


#13

I tried two ASMedia SATA 3 controller cards, a pcie x1 and a pcie x4 combo with two additional usb 3 ports. I tried them in the pcie x8 slot (that is usually supposed to be used by a second graphics card) and they both seemed to work fine (maximum read speed was with either card about x16 with two drives simultaneously connected and reading). Previously, I was using the cards in x1 and x4 slots. I hope this configuration does not affect the speed of the graphics card in the x16 slot (which shares lanes with the x8 slot).


#14

Newer PCIe-revisions are fast enough with 8x to have no negative effects for the VGA-card