PCI 2.1 Card put to PCI 1.0 Slot

Natsu Igneel · Dec 31, 2013

I have a Gigabyte EG31M-S2 Motherboard (which has a 1 x PCI Express x16 slot)(http://www.gigabyte.com/products/product-page.aspx?pid=2891#sp)

The card I am going to buy is ATI Radeon HD 5570 (which has a PCI Express 2.1 x16 bus interface)(http://www.amd.com/us/products/desktop/graphics/ati-radeon-hd-5000/hd-5570/pages/hd-5570-overview.aspx#2)

Can I put this card onto my motherboard?

ganeshkumar1812 · Dec 31, 2013

all pci e gpus are backwards compatible u can even have a pcie 3.0 gpu if u have enough psu to run that

cst1992 · Dec 31, 2013

NO.
Even with the backwards compatibility, the PCIe 2.1 cards that are manufactured are only compatible with 2.0 revision of the PCI Express bus.
Go with a similar NVIDIA card.

How much are you paying for the card, which site do you use and which country are you from? We will be able to select a good card for you.

Also, post the rest of your system specifications.
That'll be helpful to determine if there is any bottleneck(the card performing under its capacity because of the CPU or RAM being not able to handle it). Given your system, there is a good chance of the bottleneck.

However, if you're getting it from someone, refuse it. It is not compatible.

photonboy · Dec 31, 2013

Probably..

It's not YES, or NO.

"PCIe 2.0 cards are also generally backward compatible with PCIe 1.x motherboards, using the available bandwidth of PCI Express 1.1. Overall, graphic cards or motherboards designed for v2.0 will work with the other being v1.1 or v1.0a."

I think that motherboard and graphics card will work together.

cst1992 · Dec 31, 2013

photonboy :

2.0 is compatible with 1.1 or 1.0 but 2.1 is NOT compatible.
I've only read about AMD cards having 2.1 but I may be wrong. They are NOT compatible with older interfaces.

Divyanshu Sah · Dec 31, 2013

NO problem.

cst1992 · Dec 31, 2013

I'll say again.
If you're getting it for free from someone, you're free to try it.
Do NOT buy it if you're planning to.
I have a 1.1 board myself and have been advised against it.

Natsu Igneel · Feb 13, 2014

sorry for the delay but im from philippines and that card is about P2000-3000($45-$70)

CPU: Pentium E2200
RAM: 1GB DDR2

cst1992 · Feb 13, 2014

That is a very old system, and you have very limited RAM.
I doubt you'll benefit from a graphics card at all.
Better invest your money in a new system.

renz496 · Feb 13, 2014

PCI-E 2.1 indeed working with older PCI-E version but motherboard BIOS need to be updated to apply the fix so PCI-E 2.1 cards can work on older PCI-E interface. but the problem is mobo with discontinued support are not getting this update thus the only way to make it work is by replacing the mobo with the latest one which is not ideal solution. i think nvidia see problem this so that's why they skip PCI-E 2.1 altogether. plus PCI-E 2.1 still offering the same bandwidth throughput as PCI-E 2.0.

AMD likes to be the first when implementing new standards but sometimes it did not give them the edge over nvidia at all. in this case there are people really want to get AMD card but in the end have to settle with nvidia because of the issue. the same goes with the tessellation engine that exist in HD4k series (not sure if 3k series have them). in the end it is useless since you still need hardware that compatible with DX11 to use the feature.

Natsu Igneel · Feb 13, 2014

I didnt understand much in the second paragraph. So I can only buy nvidia cards?

renz496 · Feb 13, 2014

Natsu Igneel :

not really. just stay away from cards with PCI-E 2.1. that's mean all amd 6k series and some of 5k series. but as cst1992 said your system are very outdated and RAM is very lacking which could lead to problem when running games. if you can afford it is better to build new system.

cst1992 · Feb 13, 2014

I had read that 2.1 revised the specifications of power supplied through the PCI-E slot that did not allow for compatibility with 1.0 and 1.1.
3.0 is later generation of 2.1 but is compatible with 1.1, 2.0 and 2.1.

renz496 · Feb 13, 2014

i heard something similar as well but some people here at the forum did report that they able to make their AMD 6k series to work with PCI-E 1.1 slot (intel G41 chipset)

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PCI 2.1 Card put to PCI 1.0 Slot

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