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HP Recommended
Microsoft Windows 10 (64-bit)

Hello , about the thunderbolt add on card ( PN# 4CX35AA ) . I have the hp 800 g5 tower . This card connects to the pciex4 which is ~ 5GB/s and to a video out port which is ~ 2.2 GB/s . Thunderbolt 3 is ~ 3.2 G/BS . Where does the video port 2.2 GB/s bandwidth get lost ? , Or it doesn't get lost ? 

6 REPLIES 6
HP Recommended

you don't specify the systems config  so all i can do is give a generic cable description for the 800 G4/G5

 

https://www.ebay.com/itm/154762189590

HP Recommended

Dgroves ,This is a bandwidth question . Read my question again.

HP Recommended

nothing gets lost,  Thunderbolt 3 allows for connection speeds up to 40Gbps

 

A Thunderbolt 3 cable is capable of transferring up to 40 gigabytes of data per second, which is twice the maximum data transfer speed of USB-C. However, in order to hit these data transfer speeds, you must use a Thunderbolt cable with a Thunderbolt port, and not a USB-C port.

 

The latest iteration is Thunderbolt 4, which improves on the standards of Thunderbolt 3. These standards include the ability to daisy-chain two 4K monitors or support a single 8K monitor, and data transfer speeds of up to 3,000 megabytes per second. This is double the minimum standard set by Thunderbolt 3

HP Recommended

Please may i get a reply from someone who has this card or does not quote without knowledge ( and also things i didnt ask) .

 

From Wikipedia :  https://en.wikipedia.org/wiki/Thunderbolt_(interface)#Thunderbolt_3

Thunderbolt maximum combined data rate ( screen and data ) cannot exceed 40 Gbit/s .

 

Does this card exceeds 40 Gb/s combined on the 800 G5 , or do i loose 2.1 GB/s of the screen connector on this card ?  

HP Recommended

you don't loose anything,...............you might want to read HP position on this, you are not understanding how the data specs of TBolt are derived

 

https://www.hp.com/us-en/shop/tech-takes/usb-c-vs-thunderbolt

HP Recommended

O.k , i understand that you say this is a 58 Gb/s (7.2 GB/s) thunderbolt 3 card . 

 

Now i want to hear an owner that says he can output 7.2 GB/s , one way or the other .  Video ( screen) and data .

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