PCI Express version difference

[dontbugme]

Im planning to replace my Radeon HD 4850, but not sure whats the difference between :

PCI Express 3.0 x16 , PCI Express 2.0 x16 , PCI Express 1.0 x16 ?

Lets say I picked this HD 7750 card:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150612

It has PCI Express 3.0 x16 interface, I believe my Radeon HD 4850 and mobo ACER MCP73PV NVIDIA MCP73 have PCI Express x16 version 1?

Wont I be limited to use HD 7750 card because of that? I mean wont it be weaker than my 4850? or PCI Express doesnt really mean anything?

thanks

 

[nitrium]

It's just the speed of your bus. IF you have to transfer graphics from your main RAM to your GPU (due your GPU running out of memory), the time that this takes will be affected, resulting in more noticeable frame judders. Other than I think it makes preciously little difference.
http://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/#1080pResults
https://www.techpowerup.com/reviews/NVIDIA/GTX_980_PCI-Express_Scaling/

 

[flamefire999]

PCI 1 is for things like wireless adapters.

PCI-E 2 and 3 are for things like graphics cards. There's not a big difference between the 2 and it's explained here: http://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/

 

[dontbugme]

PCI 1 is for things like wireless adapters.

PCI-E 2 and 3 are for things like graphics cards. There's not a big difference between the 2 and it's explained here: http://www.pugetsystems.com/labs/articles/Impact-of-PCI-E-Speed-on-Gaming-Performance-518/

so I got PCI-E 2, not 1 then ?

Also, is there any better one slot card to upgrade than 7750?

 

[Dark Lord of Tech]

He means PCIE x16 V 1.0

 

[smorizio]

before you drop the hammer and buy the gpu check to see what video cards will rork without any issue on nfoce 7100 chipsets. the other issue is the size of your power supply. make sure it sized to the new gpu. some of the older pc you cant replace the power supply becuase they dont use the same pin outs as standard power supplys.

 

[endeavour37a]

I think there is a difference between 1.0 and 1.1, 1.1 is comparable with 2.0 and 3.0, not sure about 1.0

 

[Dark Lord of Tech]

http://www.overclock.net/a/the-final-answer-to-the-controversial-pcie-x16-version-compatibility
The final answer to the controversial PCIe x16 version compatibility.

 

[dontbugme]

http://www.overclock.net/a/the-final-answer-to-the-controversial-pcie-x16-version-compatibility
The final answer to the controversial PCIe x16 version compatibility.

hmm, interesting. So I have to get the tower to the shop and check there and look at Nvidia instead of Ati. Thank you.

smorizio, the power is fine, if it handles the hungry 4850. Its 400 watt.