Closed What happens if I crossfire a 7850 with 7870. Tags: Radeon Performance Crossfire Graphics Last response: May 4, 2012 8:17 PM in Graphics & Displays Share goombaxiv May 4, 2012 1:57:14 PM What happens if I crossfire a 7850 with 7870. Will the 7870 throthle back to the 7850 performance or they will both run at their maximum? More about : crossfire 7850 7870 mrwil May 4, 2012 2:08:08 PM you can always oc the 7850 to the 7870 performance. Score 0 goombaxiv May 4, 2012 2:09:56 PM What happens if both are OC Score 0 Related resources 7870 + 7850 crossfire - Forum 7870 ghz crossfire with 7850? - Forum AMD 7850 + 7870 crossfire - Forum Crossfire Overclocking 7870 and 7850 - Forum 7950, 7870, 7850, or crossfire my 7770? - Forum Can't find your answer ? Ask ! Get the answer ilysaml May 4, 2012 2:37:59 PM The faster card will downclock itself to cope up with the slower card, you need to have the same Memory Clock & GPU Clock running for the best performance. And it's highly recommended to CF identical cards. Score 0 goombaxiv May 4, 2012 3:05:44 PM I do understand that the speed as to be the same but the 7850 has 1024 SP and the 7870 has 1280 SP. Is the CF combo going to behave has 2 X 1024 SP or 1024 + 1280 SP? It make sense that the clock has to be the same but cutting the number of cores doesnt seem right? Score 0 Best solution ilysaml May 4, 2012 3:12:29 PM It doesn't go like this...when you CF...nothing is doubled...both the HD 7850 and HD 7870 have the same "GPU" so they share the work load between each other. You'll end up having 2 x HD 7850s...because the HD 7850 has the lower SP,.....etc. Share goombaxiv May 4, 2012 3:14:47 PM Ok thanks for the reply. I wonder why they allowed to CF higher cards when the best one will be downclocked. Score 0 ilysaml May 4, 2012 3:17:55 PM goombaxiv said:Ok thanks for the reply. I wonder why they allowed to CF higher cards when the best one will be downclocked. Well you can always get the same card and free yourself of such hassle Score 0 goombaxiv May 4, 2012 3:36:16 PM Best answer selected by goombaxiv. Score 0 Mousemonkey May 4, 2012 8:17:37 PM This topic has been closed by Mousemonkey Score 0 Can't find your answer ? Ask ! Publish Related resources SolvedCrossfire w/7870 and 7850 Forum SolvedSAPPHIRE HD 7850 OC 2GB GDDR5 or SAPPHIRE HD 7870 OC 2GB GDDR5 to crossfire with A10 5800k. Which is better??? 7970 is toooooo Forum Crossfire a XFX Double D FX-787A-CDFC Radeon HD 7870 with my HD 7850 Forum Crossfire problems with a 7850 and 7870 Forum AMD 7870 + 7850 No Crossfire option Forum SolvedQuestions on crossfiring Radeon 7870 with Radeon 7850 Forum Can you crossfire the 7850 2gb with a 7870 LE (XT)? Forum 7870 7850 crossfire? Forum Solved660ti or 7870 or 7850 what is the coolest running card? Forum SolvedWhats better Crossfire HD 7850s 2GB OC or R9 290?? Forum Crossfiring a 7850 Factory overclocked card with a 7870? Forum Crossfiring HD 7870 + 7850 on this system, specting to get better results for Battlefield 4? Forum SolvedWhat happened to the 7850? Forum Whats the better deal??? 7850 v 7870 v gtx 660 Forum What mobo to get for 7870 crossfire? Forum More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !