Why is transfer speed between computers in LAN so slow?

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thesuperguy

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Apr 19, 2013
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I currently have a setup involving an Asus RT-N56U acting as router, and an Actiontech V1000H, which was mind you, shoved down my throat by my ISP, acting as a modem/router combo in bridged mode. So I essentially have the Asus as my router.

I have a desktop connected directly to the router via ethernet, and another desktop equipped with a TP-Link WDN4800 PCI-E card, rated at a max of 450 mbps. The router itself is actually only rated at a max of 300 mbps.

Now I'm just wondering, is it not intuitive to think that I would be at the very least, able to get file transfer speeds between the two computers reaching a mere third of my rated maximum? That equates to 12.5 MBps. However, I am only getting 8 MBps on good days, sometimes dipping down to a measly 2ish MBps on bad days.

I just want to know what might be going on. Is this potentially linked to my WAN speeds as well? I doubt it, but just in case, note that I get around 26 mbps down and 6.5 mbps up consistently.
 
Solution
christinebcw
Super, some good person here linked me over to this WIKIDEVI page that lists most of the radio-chipsets (Broadcom, Atheros, Realtek, etc) in currently available products. (The table starts about a third of the way down - it's a long, LONG list, but each column is alpha-sortable - whew.)

I present this to you because, I suspect, the different radio-chipsets are one factor in speed differentials plus, of course, the generations of Broadcoms I'd suspect might be classed as "compatible" but not "the best". ("Compatible" still has an air of "lowest common denominator" for me.)

Sometimes, if I can tweak and select different channels, I can avoid some popular shrapnel-effect interference from wireless phones, microwaves...
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thesuperguy

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Apr 19, 2013
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It is literally a room away. The only thing blocking is a single wall (unless we are talking about a straight line path, in which case it passes through 2 layers of walls) as well as 5ish meters of space.
 
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christinebcw

christinebcw

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Sep 8, 2012
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Super, some good person here linked me over to this WIKIDEVI page that lists most of the radio-chipsets (Broadcom, Atheros, Realtek, etc) in currently available products. (The table starts about a third of the way down - it's a long, LONG list, but each column is alpha-sortable - whew.)

I present this to you because, I suspect, the different radio-chipsets are one factor in speed differentials plus, of course, the generations of Broadcoms I'd suspect might be classed as "compatible" but not "the best". ("Compatible" still has an air of "lowest common denominator" for me.)

Sometimes, if I can tweak and select different channels, I can avoid some popular shrapnel-effect interference from wireless phones, microwaves, pacemakers, aliens phoning our gov't bureaucrazies, etc. The router might let me hard-code a channel and then the receiver/adapter will auto-detect the change; I can test those, channel by channel, for best immediate results, but a caution that "time of day" and whether the phone rings is still a factor.
 
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