LAN speeds and SATA on KT600, compared to any other chipset

[Hipshot 0]

Hmm, as everybody knows, the IDE-bus goes through the PCI subsystem, but the SATA on the KT600 is native and goes direct to the southchipset. Normaly when you are on a LAN and your friend copies a very large file from you, the system is getting slow, cause, I think the network card, which also goes though the PCI slows the HDD, as they are limited to the same bandwidth. But in the same situation, I would use a SATA drive, connected to the native SATA on the KT600 board, I suppose I wouldent get the same slowdown? True or False?

 

Hope you understood what I tried to say. Im not very good at english.

[Tomay 0]

I'd say false. The biggest slowdown on my computer when somebody copies a big file from me is the firewall. It uses 80% of my cpu time. And both the nic and the hdd are no match for the pci bus. The nic can't go beyond 8MB/s except if you have gigabit lan.

 

I have a sata capable mobo but no sata drives, maybe someone else could test this.

[Hipshot 0]

Ok, but Im not talking firewall here, just plain old LAN with some friends and no security Also im pretty sure I've seen speeds faster than 8 on my NIC, cause 100Mbit would be 12.5 MB as a peak, when I was on Dreamhack (Major LAN (5000 people) in sweden) I had numbers on like 10-11MB/s.

 

You must agree that there is a sagnifient slowdown when somebody copies from you, right? And I suppose this is because all HDDs, system and then the NIC on top of this is using the PCI bus, the PCI bus is capable of 33mhz, 133MB/s (I think) but since a normal (P)ATA drive today only can read/write from 24-55MB/s the NIC would use a bit from that, then the system and so on, all this would slow down the system pretty much, and this is also why when using a 10Mbit NIC the system isnt getting slow, cause they peak at ~1MB/s, that is very slow.

 

 

This is just what I think, since I havent got my KT600 or my Western Digital Raptor, I cant test it, and maybe I have wrong Im no expert, but I build alot of computers and have a good general knowledge so the ide cant be totaly crazy

[Copernicus 0]

Make sure you have 2 SATA HDD's if you want use the SATA RAID.

[duhmez 0]

The lan bandwidth + the hard drive bandwidth + everything else on the PCI son't be close to full, even when doing a highres video capture on a pci card, you still have plenty of room. nothing is fast enough to tax it. If a pci card didnt do bus mastering right and was making your cpu wait alot, then in theory it could slow it down. In practice thugh, it should not.

[Hipshot 0]

Quote:

The lan bandwidth + the hard drive bandwidth + everything else on the PCI son't be close to full, even when doing a highres video capture on a pci card, you still have plenty of room. nothing is fast enough to tax it. If a pci card didnt do bus mastering right and was making your cpu wait alot, then in theory it could slow it down. In practice thugh, it should not.

Still I dont know why the 10Mbit nic dont slows the computer, when the 100 does...

[Mr.Guvernment 0]

set your nic to the proper speed instead of "auto negotiate" see if that helps.

 

could just be a bad or cheap nic card u go.