Jump to content

Crossfirex won't raise performance?

Nemam11
By Nemam11
in Troubleshooting
 Share
Posted

Hi, I have a radeon r9270x, and I found a radeon HD7850 - they are both 2GB so I figured why not. But when I crossfire them, it benchmarks even lower then the 270x by itself. PSU is 600W. Is that normal? 

 

Specs:

MB: Gigabyte GA-970A-D3

cpu: AMD FX-8150

ram: 4xDDR3 4gb 1600Mhz

ssd: Plextor m5s 128gb

 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

That's not right. Something is definitely wrong.

 

If I'm not mistake the 7850 = 280 doesn't it?

Someone told Luke and Linus at CES 2017 to "Unban the legend known as Jerakl" and that's about all I've got going for me. (It didn't work)

 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

7850 is equal to a r7 265 :/

so thats why

My Main Build: NZXT S340 - NZXT Kraken X31 - Crucial MX100 256GB - i5 4460 - Gigabyte Z97P D3 - Kingston HyperX Red 8GB - MSI Nvidia GTX 780 3GB - Corsair LL & HD RGB Fans, Corsair Lighting Node Pro. 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

HD 7770 GHz Edition -> R7 250X (Cape Verde XT)
HD 7790 -> R7 260, R7 260X (Bonaire)*
HD 7850 -> R7 265 (Pitcairn PRO, rebranded to Curaçao PRO)
HD 7870 -> R9 270 (Pitcairn XT, rebranded to Curaçao PRO)
HD 7870 GHz Edition -> R9 270X (Pitcairn XT, rebranded to Curaçao XT)
HD 7950 -> R9 280 (Tahiti PRO)
HD 7970 GHz Edition -> R9 280X (Tahiti XT2)
HD 8570 -> R5 240, R7 240 (Oland)
HD 8670 -> R7 250 (Oland PRO)

 

Thanks @Speedbird for making this list.

My Main Build: NZXT S340 - NZXT Kraken X31 - Crucial MX100 256GB - i5 4460 - Gigabyte Z97P D3 - Kingston HyperX Red 8GB - MSI Nvidia GTX 780 3GB - Corsair LL & HD RGB Fans, Corsair Lighting Node Pro. 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

Hi, I have a radeon r9270x, and I found a radeon HD7850 - they are both 2GB so I figured why not. But when I crossfire them, it benchmarks even lower then the 270x by itself. PSU is 600W. Is that normal? 

 

What benchmarks are you running?

*Risky click of the day*

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

7850 is equal to a r7 265 :/

so thats why

The cards are still in the same family, Crossfire should work.

OP, did you remember to connect the Crossfire bridge and enable it in Catalyst?

LTT's unofficial Windows activation expert.
 

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

You have t connect the bridge, did you do it?

"like if you could buy two Xbox Ones, put them togheter and actually play games at 1080P! Ha! BURN"

-Linus

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

your MOBO can do crossfire but not very well 

 

dMrIB.png

l Intel Core i7 4790K @ 4.5Ghz l Asus VII Ranger ROG l MSI GTX 970 @ 1555MHz l 


PC PART PICKER

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author

-Alright, I'm not that dumb.. the bridge is connected (I even tried to swap it out with the other one i got)

-I know that the second slot isn't x16 but still, it should improve, right ? even a little..

-I'm not running any serious ones, just the res. evil 6 benchmark and star wars swarm - but improvement in game isn't any either - like COD-AW will blow a blue screen after I try to shoot, far cry4 will play fine for a little while then start laggin, when I get on a fourwheeler and then it's just second before it renders lines across the screen and I have to reset. I don't like to reset my pc

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

yea your main problem is the PCI-E lanes and nothing else

 

your 2nd GPU is getting bottleneck which cause the drop in performance

Budget? Uses? Currency? Location? Operating System? Peripherals? Monitor? Use PCPartPicker wherever possible. 

Quote whom you're replying to, and set option to follow your topics. Or Else we can't see your reply.

 

Link to comment
Share on other sites
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing Troubleshooting

×