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Trying to CF R7 265 and 7850 (both xfx) without CF bridge, but :(

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Hi guys, i was told that no cf bridge is needed for cf in new cards so i tried but no luck, the option is disabled where i can click enable CFx ... please help

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I could be wrong but I'm pretty sure only r9 285, r9 290 and r9 290x cards can be run in crossfire without a bridge cable. Try it with a crossfire bridge cable and hopefully it will help out
 

eidairaman1

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If there's crossfire fingers on the cards you need a crossfire bridge or 2 period
 
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Hi guys, i was told that no cf bridge is needed for cf in new cards so i tried but no luck, the option is disabled where i can click enable CFx ... please help

Specs:
i5 2500k
Asus Z68 deluxe
4gb Micron 1600mhz
XFX R7 265 2gb and xfx 7850
Samsung sata ii 120gb SSD
CM 700w M2 semi modular 80+

Those cards still use the CFX bridge so you are going to have to use it. Only cards that do not have the CFX fingers allow for the CFX to be done through the PCIE.
 
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eidairaman1

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Shut your machine down before hooking up the bridges
 

XSI

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i'm not sure about 265, but 7850 do need a CF bridge for sure
 

eidairaman1

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Didn't even get one with r7 265 or 7850 ... that's why

Will try to get one and let u guys know tomorrow, thanks :)
 
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eidairaman1

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Its like 5 bucks for a basic one which is all you would need.

Your motherboard may have even come with one.
 
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Shut your machine down before hooking up the bridges

i'm not sure about 265, but 7850 do need a CF bridge for sure

Its like 5 bucks for a basic one which is all you would need.

Your motherboard may have even come with one.

Ok guys, got the CF working with the bridge, but too much stuttering in bf3 mp, damn too much :/ ... what to do? i did disable ULPS in registry, but no luck
 

eidairaman1

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if its MP your connection could be at fault
 
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if its MP your connection could be at fault

no it's not, didn't have any when using single card ... i could even feel stuttering in firestrike benchmark ...
 

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Hi

got the CF working with the bridge, but too much stuttering in bf3 mp, ... what to do?

Use third party application RadeonPro or Other
Enable: Triple Buffering [d3d]
Select: V-Sync On

Set Frame buffer in AMD CCC to 2~3 Frames

atb

Law-II
 
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You should also make sure that frame pacing is enabled in CCC.
 
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Removed 7850 and crossfired with another R7 265, works like a charm, i guess the issue was unidentical skus

Problem solved ... thread maybe locked
 
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Removed 7850 and crossfired with another R7 265, works like a charm, i guess the issue was unidentical skus

Problem solved ... thread maybe locked
They are technically supposed to be the same card (IE R7 265 just a rebranded HD 7850) but maybe it was either the card itself or there was some limitations with the bios on each card.

Odd enough but glad its resolved!
 
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They are technically supposed to be the same card (IE R7 265 just a rebranded HD 7850) but maybe it was either the card itself or there was some limitations with the bios on each card.

Odd enough but glad its resolved!


Yes but they have huge difference in memory clocks, 1200 vs 1400, i guess this is where the problem was coming from, the stuttering, tried to lower the memory clock on r7 265, but it didn't happen don't know why
 

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Removed 7850 and crossfired with another R7 265, works like a charm, i guess the issue was unidentical skus

Problem solved ... thread maybe locked
We aim to please. Locked.
 
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