Gadgetory

what is going on guys johnathan here with TLD with a performance benchmark video covering the late 2012 27-inch imac equipped with the top and gtx 680 MX with two gigs of video memory so for this video we're going to be doing a couple different things one of which is enabling GPU or CUDA acceleration and After Effects cs6 now as a quick notes you do need to be running after-effects version 11.04 higher in order to get this function to work so if we head up to After Effects and then go to preferences and previews we can go and check out the GPU information of course this is the gtx 680 MX and then right there under ray-tracing we're going to go and select the GPU that's going to allow it to do a bulk of the work so we can really focus on it stress it out and kind of assess how well and how fast it performs now there are a few different steps in order to enable this it's not going to work out of the box so to speak and I will give you guys a step-by-step guide on how to do that at the end of the video but for now I really want to focus on the actual benchmark the numbers for those of you guys who are just interested in sheer performance so we'll go and click OK get out of this ok again and I'm going to go and play this for you this is the end result of the project and it doesn't look that crazy or that taxing it's just a little five-second clip but if you head over to the render queue you can see it took about nine minutes and 42 seconds to complete now real quick what you guys are seeing right here is a screenshot of the actual render taking place if you head up to the top into ISTAT menus that's what i use to monitor everything you can see the ram is really not being pushed the cpu is really not being maxed out at all but if you go down to the video card you can see it's really really really being pushed to its limits so what I did was run the exact same test on my 2012 retina MacBook Pro that is equipped with a GT 650m with one gig of ideo memory and it took nearly three times the amount of time to complete the exact same render as opposed to the iMac now I did go ahead and run these multiple times just to ensure accuracy the MacBook Pro was consistently just under 30 minutes whereas the iMac was consistently just under 10 minutes so there was a huge difference in performance for this test now I will also be doing my best to bring you guys performance comparisons between the GTX 680 mxc you guys see right here compared to the 675 MX which is actually the step-down kind of really determine if it's worth the upgrade so if you guys are looking forward to that let me know by hitting that like button and also make sure to subscribe so you don't miss out on that video so if you guys came here solely for performance numbers and benchmarks there you have it you can see the iMac does perform extremely well much better than the MacBook Pro regards to the 3d rendering as well as GPU acceleration now if you happen to own an Nvidia based Mac with one gig of VRAM or higher or maybe a hackintosh with something similar you want to know how to enable GPU acceleration let's go to and continue on to part 2 so jump on over to part 2 quick shout out to mike gentle Eenie jr. over at vid musicom hopefully i didn't pronounce that right he has a fantastic walkthrough on how to enable this it actually has the instructions that we'll need to complete this over on his website and I'll have that link down below and then real quick just want to give a quick shout out to Teddy gage calm he is actually the creator of the benchmark project that we used earlier in this video so if you guys want to download this for yourself I will have a link to that also down below now jumping back over to After Effects I went ahead and turn back the clock a little bit so prior to this if you had not enabled these steps if you wanted to preferences previews and we went back up to the GPU information down over by raytrace and you can see the GPU is grayed out does not allow us to select it and it says GPU not available in compatible device or CUDA driver so the first step to enable this is we're going to get out of this press ok ok we wouldn't close down After Effects we're going to go back to Safari because the absolute first step we need to do is download the cuda driver for mac now as of this video the current up-to-date driver is version 5.0 3:7 obviously that could change if you're watching this in the future so make sure to use that link so you're able to get the most up-to-date driver now I had previously already downloaded the file if you were doing so for the first time it should appear in your downloads folder so we're going to go to jump over to that file already have it placed right here we're going to double click on the dmg that's going to open up the package and then we're going to double click that - one more time next we have the welcome to CUDA 5.0 installer we're going to go to and click continue I believe it's only about a two hundred mega installation two hundred two megabytes so it's not going to take that long and you actually don't need to restart to complete this installation so once that is complete we can go to and exit the installer code and click the X exit out of this and we're going to go back to vid me news.com because that is where mr. mike gentle Eenie has the downloadable instructions to go to the game download those to your download folder again I have them conveniently placed over here we're going to go to open that up now we're going to actually need to open up terminal so the easiest way to do that is go up to spotlight type in terminal and there she is now since we are doing this for After Effects obviously we're going to follow the aftereffects instructions we're going to need to copy this little snippet right here like so command C to copy we're going to paste it into the terminal press Enter that is command V by the way just for a quick shortcut on how to paste enter and that's going to actually pull out the exact name of the video card so you guys can see right here GeForce GTX 680 MX you're going to need a hole on just because it is case-sensitive from there we're going to go to and press command and it's going to open up a new instance of terminal then we're going to go ahead and go over to the second line right here copy that again command C we're going to paste that with command V we're going to hit enter and it's going to ask you to enter your password so go to and enter whatever your password is and you can see we have a very short list of supported video cards so what we're going to do is go back to that first terminal we're going to go and copy that go back to the second terminal again just hit enter just so you can create some space we're going to go up and then we're going to copy and paste or actually paste command V again the exact name the geforce gtx 680 MX we're not quite done yet we actually have to save this so we can move on to the next step so next we're going to press control X to exit it's going to ask us do you want to save this we're going to hit Y for yes and then one last thing we're going to hit Enter or return so we can actually save this final step so next we're going to go and open up after-effects down here let it load up real quickly and just for this reference we're not going to open a project or anything I just want to show you that it is enabled now so close this out go up to After Effects preferences previews one last time and if we go over to the GPU information ray-tracing we can now select the GPU so that's pretty much it you are ready to go remember not every Mac is going to work on this but if you do have a latest gen Mac with NVIDIA card with one gig of video memory or more you can do this and you can test this out yourself so thank you guys for watching this video if you did enjoy it please make sure to hit that like button favorite all that good stuff does help the channel out if you guys did miss that I also have a video covering upgrading the memory on this bad boy to 32 to ram that is linked right here you guys can check that out and I will see you guys later you