DMI 3.0 Vs 2.0 Difference

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HritabanS_2661

HritabanS_2661

Commendable
Nov 24, 2016
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Hello!

I want to know what is the difference between DMI 3.0 & DMI 2.0. What does it stand for? and does it affect any performance? As I am using a basic H110M motherboard(Asus H110M-D), the DMI is 2.0 ( 5 GT/s). I have an i5 6500. Considering it as a fast processor ( I guess so!) does it (DMI 2.0) somehow limiting any performance? I opted to go with the H110m motherboard because I am not into overclocking neither do I want to use M.2 SSDs or more advanced features( RAID, etc) .I have a kingston SSD Now UV 400 240GB SSD and a GTX 1060 6GB ( gigabyte G1 Gaming ) coupled with 16GB DDR4 2133 Mhz Memory(2*8 GB) and I run almost every games at Full HD with every detail settings maxed out. But the DMI thing really confuses me? Can you please clarify if my specs are fine? or do I really need to upgrade my mobo?
 
Solution
bit_user
If you're not using RAID, then don't worry about it. DMI is the connection between the CPU and the SouthBridge chip. DMI 2.0 is basically x4 PCIe 2.0, whereas DMI 3.0 double the speed by upgrading it to PCIe 3.0.

https://en.wikipedia.org/wiki/Direct_Media_Interface

It will only be a bottleneck if you saturate some combination of the SATA 3 ports, USB 3.0 ports, and PCIe x1 slots on that board. But it has plenty of bandwidth to handle a couple of those links at full speed.

DMI 2.0 can theoretically support up to ~2 GB/sec. SATA 3 maxes out at ~0.6 GB/sec. USB 3.0 maxes out at 0.625 GB/sec. And the x1 slots each max out at 0.5 GB/sec. So, you can see that you'd have to max out about 3 of those, before you get close to the limit...
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bit_user

bit_user

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If you're not using RAID, then don't worry about it. DMI is the connection between the CPU and the SouthBridge chip. DMI 2.0 is basically x4 PCIe 2.0, whereas DMI 3.0 double the speed by upgrading it to PCIe 3.0.

https://en.wikipedia.org/wiki/Direct_Media_Interface

It will only be a bottleneck if you saturate some combination of the SATA 3 ports, USB 3.0 ports, and PCIe x1 slots on that board. But it has plenty of bandwidth to handle a couple of those links at full speed.

DMI 2.0 can theoretically support up to ~2 GB/sec. SATA 3 maxes out at ~0.6 GB/sec. USB 3.0 maxes out at 0.625 GB/sec. And the x1 slots each max out at 0.5 GB/sec. So, you can see that you'd have to max out about 3 of those, before you get close to the limit of what DMI 2.0 can support. It's not likely to happen, in practice. The board was basically designed around the limitation. If the chipset had DMI 3.0, then they'd have added more SATA 3 links, more peripherals, more USB 3.0 ports, and perhaps another PCIe slot.
 
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