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How to downgrade PCI-E version ? [Radeon HD 7770]

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#2
PCI-E version is not your problem. All PCI-E slots are compatible with older versions.
 
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#4
Well first of it would probably help to know what your motherboard is. Like the model number.
 
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#5
The PCI-E will run at 1.0 coz your motherboard does not support 1.1, 2.0 or 3.0 versions so the card runs at the spec of your motherboard, hence they say the cards are backward compatible.
 

Frick

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#6
Did the artifacts come after you upgraded the BIOS?
 
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#7
initially my mobo didn't have PCI-E 1.1 support only 1.0 but after some bios update GPU-Z showed 1.1 with my (currently broken) 8600GT!
There are ways to downgrade/roll back to previous BIOS check website for your motherboard
info and ways to roll back, mostly eg Intel Motherboards use recovery method, i don't know about yours, so check manufacturer website.

Did the artifacts come after you upgraded the BIOS?
^
 
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#9
If it happens in a web browser, disable hardware acceleration in that browser. Update the drivers to the latest might help as well.

And just in case, check in the BIOS whether the PCI-E bus frequency is at 100 MHz.
 
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#11
U think out of the box...
Well you still havent provided your motherboard version or any details about your system. How do you expect us to help you? :laugh:
 
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#13
So its an Acer pre build. Whats the specs of your power supply. That might be the issue.
 
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#16
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Frick

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#17
JUST tape the fingers on the card W1zzard did an article a while back or try google
That would only reduce the lanes, not change the version.