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Can pcie 2.0x16 gpu can work with 3.0x16 slot with core 3rd gen i3 processer on

Last response: in Motherboards
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October 4, 2012 1:34:23 AM

As i was searching for the mother board for intel ivry bridge with 1155 socket, having GTX 550Ti which is a pcie2.0x16 gpu. So i desicded asrock H77 Pro4/MVP (http://www.asrock.com/mb/Intel/H77%20Pro4MVP/?cat=Speci...) which is a budget mob. fulfilling all my requirements but at the one point i got confused that it says : PCIe Gen3 is supported on 3rd Generation of Intel® Core™ i5 and Core™ i7 CPUs. As i will use this board with Intel® Core™ i3-3220 Processor [http://ark.intel.com/products/65693/Intel-Core-i3-3220-...] which does not support pcie3.0 slot. In this motherboard there is:
- 1 x PCI Express 3.0 x16 slot (PCIE2: x16 mode)
- 1 x PCI Express 2.0 x16 slot (PCIE3: x4 mode)
Can my graphic card will work fine on PCI Express 3.0 x16 slot which is in PCIE2: x16 mode.
October 4, 2012 1:40:18 AM

PCIe versions are all supposed to be backwards-compatible except sometimes for PCIe 2.1 cards and PCIe 1 variants such as 1.0a and 1.1. PCIe 2.0/2.1 will work in PCIe 3.0 slots and those slots will work as PCIe 2.0 if the CPU only supports up to PCIe 2.0.

PCIe 3.0 motherboards all support PCIe 2.0 and other versions. For example, a lot of Z68 boards supported PCIe 3.0 before there were any PCIe 3.0 LGA 1155 CPUs and the Sandy Bridge CPUs all work on them in PCIe 2.0.

Basically, don't worry, your system will work.
October 4, 2012 1:57:54 AM

of coz will work
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October 4, 2012 6:44:34 PM

Yeah it will work fine :) 
October 5, 2012 6:35:50 AM

daamz said:
of coz will work
A lots of "Thanks" for the answer.............
October 5, 2012 6:45:26 AM

luciferano said:
PCIe versions are all supposed to be backwards-compatible except sometimes for PCIe 2.1 cards and PCIe 1 variants such as 1.0a and 1.1. PCIe 2.0/2.1 will work in PCIe 3.0 slots and those slots will work as PCIe 2.0 if the CPU only supports up to PCIe 2.0.

PCIe 3.0 motherboards all support PCIe 2.0 and other versions. For example, a lot of Z68 boards supported PCIe 3.0 before there were any PCIe 3.0 LGA 1155 CPUs and the Sandy Bridge CPUs all work on them in PCIe 2.0.

Basically, don't worry, your system will work.

A lots of "thanks" for the reply; :) 

Then my graphic card will work with full bandwidth on ASRock H77 Pro4/MVP with Intel core i3 3220 on PCIE 3.0X16 slote...........

October 5, 2012 6:53:33 AM

reubenno said:
Yeah it will work fine :) 

:)  Thanks for the reply :)  :) 
October 5, 2012 7:11:37 AM

So then my graphic card will work with full bandwidth on ASRock H77 Pro4/MVP with Intel core i3 3220 on PCIE 3.0X16 slote. Please reply for my confurmation................. :sarcastic:  :sarcastic:  :sarcastic: 
October 5, 2012 1:20:31 PM

sameed said:
So then my graphic card will work with full bandwidth on ASRock H77 Pro4/MVP with Intel core i3 3220 on PCIE 3.0X16 slote. Please reply for my confurmation................. :sarcastic:  :sarcastic:  :sarcastic: 


You get the best that all relevant devices in the system supports (motherboard, CPU, graphics card). That is PCIe 2.0 x16. Don't worry, it won't hurt performance more than about 1% anyway. PCIe 3.0 is more important for non-gaming workloads and very high end multi-GPU systems.
!