PCIe Expresscard producing 500 MB/s ?

[Urlyin]

Hey Guys just wanted to see if I'm looking at this correctly. Okay here's the setup:

HP 6470b Laptop w/ Mobile Intel® HM76 Express Chipset

My assumption is the Expresscard port would be hanging off the 8 PCIe 2.0 5Gb/s thus resulting in 500 MB/s throughput.

This is for some testing requirements using 500 MB/s throughput. However looking at the datasheets for the onboard network adapter its throughput is half 250 MB/s of the PCIe v1.1. Which is the Intel® 82579LM Gigabit Ethernet PHY with the notation

"The 82579 PCIe interface is not PCIe compliant. It operates at half of the PCI Express*
(PCIe) Specification v1.1 (2.5 GT/s) speed. In this datasheet the term PCIe-based is
interchangeable with PCIe. There is no design layout differences between normal PCIe
and the 82579’s PCIe-based interface."

So an external device is required if I hope to get the throughput requirement...

Would this be a correct assumption using a Expresscard or would a USB 3.0 adapter provide this throughput?

 

[Jstn7477]

Gigabit Ethernet only has a throughput of 125 Megabytes/s or 1000 Megabits/s, so the network adapter is fine as it is

 

[Urlyin]

Gigabit Ethernet only has a throughput of 125 Megabytes/s or 1000 Megabits/s, so the network adapter is fine as it is

Yeah, I saw that already with a unit calc but I was stuck on the chipset and thought I was missing something else based upon a phone conversation and whether or not I heard 500mbps or 500 MB/s. Since they mentioned a laptop they already had did not meet their specifications which has 1Gb nic. I'll have to wait tell next week to get a clearification and perhaps an answer to my twisted thoughts...