It appears you have not yet registered with our community. To register please click here...

Go Back [M] > Madshrimps > WebNews
SATA 600 on P55 Motherboards Not Working At Full Speed Yet SATA 600 on P55 Motherboards Not Working At Full Speed Yet
FAQ Members List Calendar Search Today's Posts Mark Forums Read

SATA 600 on P55 Motherboards Not Working At Full Speed Yet
Thread Tools
Old 20th September 2009, 15:06   #1
jmke's Avatar
Join Date: May 2002
Location: 7090/Belgium
Posts: 78,996
jmke has disabled reputation
Default SATA 600 on P55 Motherboards Not Working At Full Speed Yet

The first problem is that the only SATA 6 Gbit controller available, the Marvell 88SE9123, only connects with one PCI-Express link. At best then, you get 500 MB/s, which is less than the theoretical speeds of SATA 6 Gbit/s, without counting the fact that this bandwidth will have to be shared between the two ports supported by the chip. At worst then, you’ll have 250 MB/s per port!

The second problem is that the additional PCI-Express lanes on the Intel chipsets don’t work at 5 GT/s but at 2.5 GT/s, even on the latest P55 Express. A simple design linking the Marvell 88SE9123 to the P55 Express will therefore limit it to 250 MB/s, which is less than the bandwidth you get with SATA 3 Gbit/s! Thankfully, following the “bug” of the 88SE9123 and PATA, many manufacturers have temporarily put it to one side, which spares us seeing a whole load of motherboards appearing that use this ridiculous design.
jmke is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
[M] Seven Intel P55 Motherboards Tested From Asus, DFI, MSI, Gigabyte jmke WebNews 1 17th January 2010 12:10
Entry Level P55 Motherboards Burn-Out When Overclocked jmke WebNews 1 15th October 2009 14:56
Not all 2nd PCIe "x16" Slots On P55 Motherboards Created Equal? jmke WebNews 1 10th September 2009 10:08
Gigabyte goes P55 loco with 11 LGA 1156 motherboards jmke WebNews 15 10th September 2009 09:36
Asus makes its P55 ROG motherboards official jmke WebNews 0 8th September 2009 09:51
ASRock preps affordable Intel P55 LGA1156 Motherboards jmke WebNews 0 5th August 2009 10:18
Intel P55 Not Coming With 6Gbits SATA ? jmke WebNews 0 20th July 2009 09:59
GIGABYTE full range latest P55 mobos video intro jmke WebNews 0 7th July 2009 10:54
Gigabyte motherboards at Computex spotted with SATA 600 Support jmke WebNews 0 26th May 2009 17:43
Upcoming Intel P55 and P57 Chipsets Lack SATA 3 Support jmke WebNews 0 24th February 2009 17:17

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT +1. The time now is 04:43.

Powered by vBulletin® - Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO