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Ask GN 2: Dx12 v. Dx11 Disparity, 300W PSU Viability, More

2015-08-25
hey everyone I'm Steve from gamers Nexus tada and we're back with another ask GN video this is our second episode the first one was fairly well liked you guys posted a lot of questions in the comments and we're gonna address a few more of those today in this ask GN video again this is a pretty unscripted straightforward Q&A with the comments that are received via Twitter Facebook or just YouTube comments for the channel and we're gonna go over a few of those today so the previous video talked about a couple of things like the 4790k vs. the 67 100k for 3ds max we talked about DTF ddr3l versus ddr3 and today we're starting with sanic or Sonic who says I hope I see you at PAX our odds are low though not really a question but this does bring up something I wanted to point out for everyone we will be at PAX this weekend this video should be going live on a Monday or Tuesday and will be at PAX the ensuing weekend so that would be Friday through Sunday we'll be there recovering the show and there will be a lot of coverage on the website gamers Nexus on that and of course a lot of video coverage as well if you happen to see us there you're gonna be present don't hesitate to say hi to anyone in a gamers Nexus shirt there will be three of us working the show and we might be in a rush but we certainly happy to talk with anyone who wants to come over and say hi so yes we will be at PAX and the first real question here Run 4 pixels says please tell me the gtx 950 is possible with my 300 watt power consumption and I think what run for pixel's means here is pretty simply will the GTX 950 work with a 300 watt power supply and that really depends on a lot of things that depends on the other hardware as always I have hair in my face so the 950 we just reviewed in video and written form and it is one of the lowest power consuming cards of its output in terms of frame rate graphics fidelity that we've tested yet so it's got a 90 watt TDP in testing I found that with a 4790k 32 gig of ram and a of SSDs which is our testbench for every GPU in a single GPU configuration we found that that configuration consumes about 200 watts of power I think it was 199 or 201 somewhere in there with a 960 you go up a little bit towards 216 220 somewhere in that range but with the 950 you're around or under 200 watts with a 4790k at stock and 32 gigabytes of RAM at I think it was 1.5 volt kit maybe 1.65 though either way pretty powerful hardware and under 300 watts the thing with power supplies is they are fairly complicated I know it's a thing that I think a lot of builders will sort of just pick one that has good reviews on Newegg and add it to the cart but there's certainly a lot more to them than that we just published an article on voltage ripple for one example of how power supplies can be complex at the base level and when it comes to power supplies the core item is efficiency and not just wattage so what you're looking at is how efficient does the power supply fuel the amount of power demanded by the system how efficient is that process and generally most power supplies do best when they're sitting at 60 to 80% power consumption depending on the manufacturer the supplier and the spec so the ATX spec is the most common one for the types of systems that we're all building and you'll want to look at the power supply manufacturers website to determine where their PSU performs best but if you're assuming the average 60% load you probably want a little bit more than 300 watts for peak efficiency meaning when the CPU and GPU are under 100% load you want a little bit of headroom for allowing fluctuations for allowing loss through heat efficiency loss and that would put you in the 350 range in general you can definitely run a gtx 950 with a 300 watt power supply if it's efficient if it has good components and of course depending on your other components in the system so if you're running something like an FX 9000 series chip which is a 220 watt TDP then the answer would be no you would need something more powerful than 200 300 watts you need something closer to 500 to allow for that efficiency window but if you're running an Intel processor or the modern AMD APU s anything really in the less than 100 watt range for TDP on the CPU then you will be able to get by on a 300 watt power supply hopefully that answers that question and if you have more questions about power supplies check out the website we actually have a whole dictionary that talks about power supply specs we talk about voltage ripple efficiency 80-plus certifications so check gamers excist on that for that info moving on Shawn Wright asks how long do you think the 980ti will remain the fastest asterisk single GPU card and defines the asterisk as ignoring Titan X so this is a good question first of all Shawn here makes the distinction single GPU card so that's pretty important because that means that the video card has one GPU on it in this case the GM 200 so we're ruling out things like the 295x2 and any potential dual GPU cards that Nvidia may or may not make in the future so looking at single GPU solutions then at the high end it's the sort of the 980ti and the fury x in the gaming range and then you've got Titans of course we're ignoring the Titan X here per the question and you've got AMD FirePro series and the fire pro series is really not within gaming range just like the Quadro series is not within gaming range so we're gonna roll those out and look strictly at knee gaming marketed cards ignoring the Titan X which is oddly a gaming marketed card despite the Titans legacy so the nine ATI is I would agree with the premise that it is among the fastest single GPU solutions on the market right now depending on what you're testing certainly is the fastest in a lot of tests that we've conducted depending on the version of the 980ti the manufacturer how long will it remain the fastest or one of the fastest at this point we don't have any good data that there will be GP launches before Pascal or before am these Arctic Isles series so until that point I would suspect that the 980ti will remain at the top of its class I would certainly expect some sort of high-end launch from one of the two manufacturers at some point in the near future even if it's just a refresh or it's a dual GPU launch or whatever I I'm not being coy here we really just don't have any information right now so I would expect something at some point it might be a Titan because Titan is due for another update in the future that may be a dual precision Titan though but the the short answer really is that I have no good information on this question it's not me being under embargo or NDA we just don't have an answer and I would imagine that you won't see massive gains until the new architectures from Andy and NVIDIA are both out and that would be Arctic Isles and Pascal both of which I would predict to be available Pascal we know to be available sometime within the next year or so NVIDIA has given us a couple of time frames for Pascal we published all of them we've seen 2016 through 2018 as one of them so that would put it coming out next year whether or not that's a game in skew I really don't know it will be a did I shrink though and the AMD Arctic Isles one should also be a die shrink they're both moving to HB m2 in theory and that should be much faster than HP m1 which is already really impressively fast and it'll be more capacity 8 to 16 gigabytes in the likely range there so that's when I would expect the biggest shift moving on lethality from Twitter asked hey guys curious your take on the disparity of AMD versus Nvidia in the real world DX 12 benchmarks coming out so this is something that is certainly worth addressing we are going to pack soon so I'm not gonna have time to run the x12 benchmarks right now but there's more than that to it I'm waiting for us to have more to work with for DX 12 so that is an important item of note here as I walk into this so the disparity between AMD and NVIDIA there's been a lot of benchmarks run lately and for those who may have seen them I'll just shout PC perspective was among the first group to publish a few there been some German ones I've gone lied gone online excuse me and the disparity that's being discussed here is that AMD has seen a larger gain in general from dx11 to the x12 performance and vidi has seen a pretty small gain from dx11 2d x12 performance moving between the api's so why is that happening well it's it's a little bit simplified right now there's only one game that's really even a testable title it's ashes of singularity or something like that that is the only game that is presently using dx12 in any capacity any official capacity that game is an alpha that game is made by Star doc who are at least have some partnership with AMD and have worked with mantle in the past and it's just it's one game so all games will perform differently the DX travel feature levels are going to be tapped into differently for different games so this is not a benchmark that is indicative of platform wide GPU hardware level wide or software level wide performance for DirectX 12 it is a benchmark of ashes of singularity using dx12 what's the current hardware but it's not the best indicator of overall performance until we really get more games that are coming out in a real-world scenario using the X 12 other than the 3d mark API overhead test which is a great test but it's not meant for comparing GPUs even 3d mark says that pretty directly on their page so what is our take on it what is my take on it I would say that I'm personally waiting for more software to be available in the real-world application area to actually test the x12 and I think also worth noting is that Nvidia has very seriously invested in optimizing for DirectX 11 in the past and in the immediate future and to this end we'll see smaller gains for Nvidia from DX 11 to 12 because they've invested so much in dx11 that they're really hitting the cap of what it's capable of already andy has struggled quite a bit for their driver launches in recent past in the last few months last three months in particular they really have stepped up their game for dry so definitely a good thing in that regard it's not nearly as bad as it was a couple of back in December was their first major launch in quite a while and then it was silent for 180 days so they've gotten better but they have never been particularly good with DirectX 11 performance so that means we're seeing bigger gains from Andy from dx11 to dx12 one interesting note is that the jump for AMD from DX 11 to 12 is putting them close to parity with NVIDIA either few FPS above you have PS below either way the 390 X is close to parity with the 980 and the benchmarks that we've seen and the internal ones we've conducted and haven't published so that is certainly promising for those who want a more competitive video card market and it's just not include it's not the full picture so I would say kind of hang back for a moment don't just jump on the AMD it's gonna crush on video or Nvidia is gonna crush AMD boat just yet because it's not clear we need more games we need more of the complete picture before we can really start tearing into DX 12 and how it will impact the GPU marketplace a couple more here Peter grata note says hi Steve when are you going to touch these otech 980ti amp extreme we've heard a lot about this card heard that it's a pretty good overclocker here's the thing we published a review a little while ago about the GTX 980 Xtreme I think it was the original 980 Xtreme not the TI version from ZOTAC and at that time we were very firm in our statement not to buy that video card because it had some very serious over volting and overclocking issues and I've heard from various readers that those issues have been resolved I've heard from others that they still exist and unfortunately we can't validate that either way because we don't have the 980 Xtreme anymore to validate it was sent back and I have not received any test hardware from ZOTAC since that point so when will we get the zotac 980 I have extreme I would not bet on it unless I can get a friend who will buy it and then borrow that for few days in bench market I would not bet on us getting one of those in the immediate future I will certainly try and see if so attack would be interested in sending us a review sample but based on our last review of the 980 extreme it's it's just not a not an easy thing to get right now and then finally Grande ratio says two days ago you look like a girl so I'm not really sure how to respond to that comment but thank you I suppose that is Hall for this ask a GN video please leave your comments below if you have any questions for the next video and again we're at pax so come say hi and if you like the kind of content we produce check out our patreon page it's in the post roll video we've now gone up to nine backers on patreon so again slow growth but extremely helpful because it does help us keep producing this content we've away from traditional advertising things like that and of course I've got Keegan working on the video and video editing aspect of this so it's a growing team at this point and the support certainly helps cover all the bases so that's all for this one I will see you all next time
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