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As most of you probably know, any 32 bit application can only use around 3.8GB of RAM (iirc). I managed to diagnose the issue that causes the crash. Oh, and as someone else mentioned, the Stalker CoP DX11 benchmark runs fine in Quad. I am now running the 11.01 Hot Fix drivers with the 11.01 Crossfire profile, but this has solved nothing. I haven't tried lowering the quality of the in-game settings, to see if it would run Quad in DX10/11, but I know it will run on a single 5970 maxed out fine in both modes. This is a completely crap solution, since who wants to run a game that utilized DX10 or more importantly DX11 in DX9 mode? Seems like all the best eye candy is noticeably missing. This runs the game in DX9 and it will work fine. The original Stalker, Clear Sky or CoP will all run 4xGPU if you select Enhanced Full Dynamic Lighting. Its built-in crossfire works fine, so both GPUs on a single card will run the game.ĭX9 will work in quad. If I disable Crossfire, the game then loads and runs fine using a single 5970. My 2xHD5970 setup will crash 100% when I attempt to start a new game or load a save if CrossfireX is enabled.

At some point one of the Catalyst 10.x releases has broken CrossfireX in quad setup.Ĭlear Sky and CoP will crash in DX10 or DX11 in 4X Crossfire. We submitted this to catalyst crew feedback,hopefully Spyre can help so this will get sorted out faster.ĮDIT : This Problem is fixed on catalyst 11.6 and later. When i fired the rig,i got disappointed to see the same behaviour of my bros rig which is suffering from this issue nearly 5 months. I dont have any problem at the other games i play.I saw some other people reporting this exact problem at catalyst threadsĪfter i bought 6970s i thought it might work on my system since these are somewhat newgens. I think catalyst team only tested game through benchmark programme,so they didnt notice this problem as there were so many performance improvement to this game in various catalyst revisions. Since there is no way to use cat 10.6-7 on Radeon HD 69xx family,the game is impossible to play with all possible performance on Quad Crossfire 6970.Although it works with cat 10.6-7 with 4x 5870,it doesnt have the performance improvements of the later catalyst revisions. It crashed since catalyst 10.8(if we remember correct) to the cat 10.12, we tested on my brothers rig.(4x 5870 eyefinity6) So this isnt a new problem and it started with 5870sĬatalyst 10.6 and 10.7 was working with Quad Crossfire on 5870s. It only crashes with 4 way CrossfireX on,if i disable CF or set it to 3 way,2 way it works. Resolution and antialiasing does not matter at this problem. In game video options is set to max.I have to ctrl+alt+del to quit the task in order to return to desktop. The game crashes during level loading on Quad CrossfireX 6970 when