Ethernet Speeds?

[r2724r16]

So I have a Intel Pro 1000 PT with one ethernet port. It goes into a PCIe 1x slot. On Intel's website, they say it's max speed is 1000 Mbps. So does that mean 125MBps or 1GBps. 

https://www.cnet.com/products/intel-pro-1000-pt-single-port-server-adapter-network-adapter-series/specs/

[79wjd]

1000mbps = 1gbps = 125MB/s.

[ProjectBox153]

It's the same. 1Gb/s (watch the lower case "b", it means bit, not bytes) is the same as 125MB/s (uppercase "B").

[r2724r16]

How can I get over 450MBps with only a 1x pcie 3.0 physical slot on my motherboard

[Levisallanon]

Just now, Rasbir Singh said:

How can I get over 450MBps with only a 1x pcie 3.0 physical slot on my motherboard

you can't

[r2724r16]

What about anything over 125MBps such as 250MBps or something

[ProjectBox153]

1 minute ago, Rasbir Singh said:

What about anything over 125MBps such as 250MBps or something

What do you need such high speeds for?

[79wjd]

1 minute ago, Rasbir Singh said:

What about anything over 125MBps such as 250MBps or something

Buy a 10Gbps card, that will get you 1.25GB/s, but that will only be on internal transfers between another computer with a 10Gb NIC (that's if the two are connected directly -- if you have to go through a router/switch, then that also needs to be 10gbps). 

[r2724r16]

Just now, djdwosk97 said:

Buy a 10Gbps card, that will get you 1.25GB/s, but that will only be on internal transfers between another computer with a 10Gb NIC. 

How do I do that. What do I need for that. And can you tell me a card that I can use for this.

[79wjd]

1 minute ago, Rasbir Singh said:

How do I do that. What do I need for that. And can you tell me a card that I can use for this.

You buy a 10gbps ethernet card. But that only helps if all other computers/devices in the chain also have 10gbps ports. 

[Nocte]

2 minutes ago, Rasbir Singh said:

How can I get over 450MBps with only a 1x pcie 3.0 physical slot on my motherboard

You need 4x Pcie 3.0 at least, and a lot of money to spare. An expensive 10 gigabit card can achieve the speeds you want. 

($100-$300). 

1 minute ago, djdwosk97 said:

Buy a 10Gbps card, that will get you 1.25GB/s, but that will only be on internal transfers between another computer with a 10Gb NIC (that's if the two are connected directly -- if you have to go through a router/switch, then that also needs to be 10gbps). 

10 Gbps is 4x minimum. 1x slot is not enough bandwidth. 

[79wjd]

Just now, Eibe said:

You need 4x Pcie 3.0 at least, and a lot of money to spare. An expensive 10 gigabit card can achieve the speeds you want. 

($100-$300). 

10 Gbps is 4x minimum. 1x slot is not enough bandwidth. 

I missed that part, but wouldn't a 10 gigabite NIC still work in a 3.0x1 slot just capped at 1GB/s (ish).

[Leonard]

7 minutes ago, Rasbir Singh said:

How can I get over 450MBps with only a 1x pcie 3.0 physical slot on my motherboard

It would have to be a 10GB card, also to get the advertised speeds of the Intel card you have you would also have to have that speed from your ISP. 

[jj9987]

Get the units right. Note the casing of the 'b' letter. 'ps' stands for per second, also written as /s (as in MB/s, Mb/s) sometimes.

 

1 Gbps = 1 gigabit per second = 1000 Mbps aka megabits per second = 125 MBps aka megabytes per second (1 byte = 8 bits)

1 GBps = 1 gigabyte per second = 1000 MBps aka megabytes per second

 

In networking, 98% of the cases we are talking about bits, not bytes.

[mariushm]

1 gbps  is 1.000.000.000 bits per second or 125.000.000 bytes per second.

 

If you want to express that using multiples of 1000, you'd have a maximum transfer speed of 125.000 KB/s or 125 MB/s

If you use multiples of 1024 ike Windows uses to show file sizes, that's 122070 KiB/s or 119 MiB/s

 

PCI is 133 MB/s, so in theory even the ancient PCI slots can achieve gigabit speeds.

PCI-e v1.x has 250 MB/s per lane (for each x1)

PCI-e v2.0 has 500 MB/s per lane.

PCI-e v3.0 has ~970 MB/s per lane.

 

So gigabit network cards have more than enough bandwidth even with the most ancient pci-e version.

 

10 gbps cards transfer at up to 1250 MB/s.

They use pci-e x4 slots because user may insert them in slots that are v2.0 maximum, meaning maximum 2 GB/s (4 lanes x 500 MB/s)

 

Since every pci-e card is supposed to work if plugged in a slot with fewer lanes, most cards should run also in pci-e x1 slots (using adapters, risers etc) but the maximum speed will be somewhere around 800-850 MB/s (out of maximum ~970MB/s that's possible).

 

A few cards are artificially restricted by drivers to require minimum x4 connection usually because manufacturers don't want cards to get bad reviews or be returned for refunds due to low transfer speeds because users don't realize the pci-e slot may be x4 or bigger physically, but it may be only x1 electrically (for example this is quite common on Intel motherboards, when you use m.2 slots with NVME SSDs, pci-e x4 slots may be downgraded to pci-e x1, because the other lanes in the x4 slot are redirected to the m.2 slot).

 

Cards aren't that expensive these days, there was a card on sale that can do 1gbps and 2.5gbps and 5 gbps (new ethernet standard) for 59$ or 69$ (i forgot the exact value) and is designed to work in pci-e x1 slots. The 10 gbps capable card using same chip, on pci- x4 slot, is around 10$ more. Search for Aquantia AQN-107 and AQN-108.

ebay also has older intel 10gbps cards for ~100$.

So with around 110-140$ you can have 5-10 gbps between 2 computers (switch is optional, you can plug cable directly between cards)