Gadgetory

hey everyone this is Steve from gamers next astana and today we're talking about overclocking the new gtx 980ti this is a maxwell card on the GM 200 GPU I've already got a review online from yesterday or the day before where we talked about the card it's performance on the whole but we're doing here is looking strictly at overclocking and Maxwell over clocks a bit differently from previous architectures primarily Maxwell introduces something called power percent target and this is the percentage of watts over the native wattage provided to the card that you're allowing for overclocking so in in the case of GM 200 and in the case of the gtx 980ti which is what we're looking at here the power percent targets max setting is a hundred and ten percent other cards will allow 120 percent even 125 percent in the case of some gtx 960 s but for the reference card we're stuck at 110 so we can set it to 110 that allows an additional 10 percent of power over the native power provided so the GM 200 that's on the 980ti has the same memory subsystem the same architecture as every other gen 2 maxwell card meaning after the 750ti launch and that would include the gtx 980 and the titan axe the titan act uses the GM 200 GPU the 980 uses the GM 204 960 is GM 206 in terms of overclocking it's the same idea for all of them but your results will be different the 980 for instance I can push a bit higher than the 980ti but the performance obviously is much greater with the 980ti so we got about a 19% performance gain as you'll see in charts momentarily from the overclock and I was able to push the base clock and boost clock 14 to about 14 44 megahertz which is 40% higher than the native clock rate the native clock rate of the gtx 980ti is 1,000 megahertz and boost is only 1075 megahertz so nothing too impressive stock but after overclocking we can easily push pretty close to 1500 I did lose stability once we started hitting about 1450 though and we'll talk about that momentarily so what you're looking at right now is a chart showing our ink mental jumps to the clock rate the voltage things like that and we do this in a way that's it's very specific for test methodology purposes I set the memory offset to only plus 500 megahertz you could easily set this to much higher potential you hundred megahertz or more but we are more focused on the core clock for overclocking in this instance so I've sort of ignored the memory clock we set it to something that's decent but not the maximum available voltage was maxed out immediately and then we just increment the core clock slowly voltage pushes about one point one eight seven volts on the gtx 980ti reference card and it is thermally limited with the reference cooler so we'll see much better results once we move to action market coolers liquid cooler seems like that as the the board partners come out with their own cards for our overclocking methodology we move things slowly for the core clock it starts out with bigger jumps like 25 megahertz at a time and then once we find instability that would be in the form of visual artifacts like red flickering or texture tearing or we find a driver crash which happens frequently when you're overclocking then it's time to step it back down so I do two passes of endurance testing one is a very quick five-minute check just to see if there's any artifacting or failure of the drivers and then if that's fine I move forward and do the next step in the frequency and we just keep repeating that until a point at which the first five-minute past shows a failure and then it's time to step it back down I'll step it down a bit and then do two tests the first is the five-minute pass the second one is a long endurance test 20 to 30 minutes using msi combustor which is just firm re skinned it pushes about a hundred percent GP load to the GPU even the gtx 980ti and that should provoke a failure if it doesn't provoke a failure then we found our stable clock rate in the case of this the offset was about 255 megahertz so it's just below what the Titan X is generally capable of that tends to push 1450 to megahertz or somewhere in that range this card pushes about fourteen forty four megahertz so very close and the gtx 980ti and Titan X are only different in their core count so the Ti has 28 16 cores in the gix has 30 72 course that's where your major differences in performance pre overclocked after overclocking as you see in these charts the Titan X is actually left behind a little bit by the gtx 980ti and we see at 19 percent performance jump over the 980 i base so it's a pretty big gain it's a massive gain over the 980 non ti card and it's reasonable over the tight neck so if you're willing to overclock you can push your gtx 980ti beyond the thousand-dollar tight necks for performance which is big that's a big deal note that overclocking over long terms can cause damage to the semiconductor just extra heat is not great for it so you'll really want to adventure with this outside of the reference cooler which is what we have here the card is thermally constricted with the reference cooler it's pushed completely to its limits EVGA has got a liquid version coming out I believe Asus might have a liquid version coming out and there's all kinds of aftermarket options from MSI they're doing a liquid cooler as well partnered with Corsair so plenty of options for 980ti overclocking it is definitely worth your time to try it out do be careful when you're doing the clock right stepping because you can cause damage to the device by overclocking it so just do it incrementally be careful and do five minute and then endurance passes and check for instability I would also recommend logging the temperatures to make sure the temperature is within the safe threshold this should not exceed 92 Celsius ever it is designed to thermally shutdown when it hits that temperature but you want to be below that anyway probably in the 80s out of max so that is the overclocking guide for the 980ti pretty impressive stuff definitely a 19% gain for performance is a big deal and is worth trying if you have a 980ti check out our patreon page linked at the end of this video and the end slate as well as the 92 TI review if you haven't seen that already and i've got some cool Witcher content all that stuff on the channel do check out the channel for more information subscribe as always and for those who are posting comments on the previous video I do read most the comments so it's it's great to hear your outreach and hear feedback some people were saying that they wish they could donate to the patreon page but they just can't that's totally fine the best thing you can do for us anyway is to share the content tell people doubt us and if you like it then leave a comment or it like or something like that I will see you all next time you