790GX sata write issue

[perdomot]

I was reading on techreport.com that the 780G and the 790GX both suffer from much slower sata write times than other amd mobos with different chipsets like the nvidia 8200/8300. Has anyone experienced this and what can be done to address it? I have a WD 640GB HDD and want to get the most performance from the drive and if the article is correct, I'm getting less than half the normal transfer speeds.

 

[VirtualLarry]

link?

AMD's southbridges have never been the best. Too bad most AMD 780G boards DO NOT pair them up with a SB750.

 

[perdomot]

http://www.techreport.com/articles.x/15256/9

It appears the 790GX suffers from the same issue as the 780G when it comes to sata write rates:

http://www.techreport.com/articles.x/14261/11

I'm wondering if getting a PCI SATA controller and hooking up the drives to it would fix this issue.

 

[perdomot]

Also wanted to ask if I should get a controller that tops off at 1.5 or 3Gb/s.

 

[perdomot]

Anyone?

 

[Quiksilver]

It would appear the issue is NCQ support. The only real question is, if that has an effect on real world performance or does it show up just in synthetics.

 

[taltamir]

i don't think this issue will limit the capabilities of a WD640... maybe an intel X25-E...

 

[perdomot]

I hope it doesn't but the info from the techreport article is worrisome. My reads on the 640GB hdd are around 93.6MB/s in HDTach and I cant test out the writes as I have a lot of files on the drive.