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Overclocking & On-battery Performance of GTX 980 Laptops

2015-12-27
the GTX 980 when in a laptop it's an entirely different beast depending on how it happens to be implemented and this comes down to power and thermal constraints placed upon it in this video we're going to give a little bit of a deeper look into MSI's implementation on their GT 72s 6qf Dominator pro G not only in normal operating mode plugged into the wall but also overclocked plugged into the wall and stock but on battery freshbooks is the super simple invoicing solution that lets you get organized save time and get paid faster click now to try for free first off let's take a look at its overall physical features this probably out of your budget level expensive machine features an SD card reader for 3.5 millimeter audio jacks and four USB 3.0 ports on the left-hand side on the back there's a killer e 20 400 Ethernet jack one power in one USB 3.1 type C Super port and one mini DisplayPort on the right-hand side you have your last two USB 3.0 ports and a blu-ray writer on the top of this unit that it has a chiclet based keyboard with zoned lighting controls there's also some buttons for power on and off a graphic switch between the eye GPU and discrete GPU for power saving reasons or performance reasons a cooler boost button which massively ramps up your fan speed a dedicated xsplit gamecaster or user-defined application button and a dedicated button to launch the SteelSeries engine for keyboard lighting and macro control it also features a pretty nice touchpad with dedicated buttons which I actually do prefer on something like a gaming laptop but one thing that I don't like well it's good aesthetically is that they outlined the touchpad with an LED but for physical reasons I'm not going to be looking down at my touchpad so it's not actually going to really going to help me and I'd like to be able to know where the edge of the touchpad is for a screen it features a 17.3 inch anti-glare wide view 1080p screen which doesn't feature g-sync I thought all MSI Dominator Pro G's laptops featured g-sync hence the whole pro G thing but I can't find it anywhere in the video control panel or on the box or in the laptop itself physically on a sticker so I don't know we're waiting comment from MSI moving on to the internals there's an i7 69 20 HQ processor running at 3.8 gigahertz with turbo boost engaged 32 gigs of DDR for memory 2 PCI Express based nvme SSDs in raid 0 totaling 512 gigs and a single 7200 rpm one terabyte hard drive Bluetooth version 4.1 killer n 1535 combo 2 by 2 AC wireless and finally the piece de resistance the full desktop grade gtx 980 so that's a lot of hardware and a lot of money let's see how it performs we tested our laptop in three different scenarios running on AC power running on AC power but overclocked and running on battery power at stock we use the 500 megahertz overclock on our CPUs and a 100 megahertz overclock on our GPUs which were both stable even without giving the chips any extra voltage our goal was not only to get an idea of the msi gt72 s performance but also come to contrast the different approaches that MSI and Sager took with their respective desktop gtx 980 s we recently reviewed the Sager NP 98 70 u2g which features not only a desktop gtx 980 but a desktop intel skylake i7 6700 K as opposed to the laptop specific sky like we have in our MSI notebook meaning these two units will have to approach power management quite differently with that in mind let's start off by looking at power draw and thermals in our Crysis 3 skybox load test not surprisingly the msi drew 47 want slower than the Sager with the latter essentially trying to cram an entire desktop rig into a laptop chassis the MSI though ran hotter under load with the GPU getting up to 83 degrees Celsius and the CPU getting up to 78 degrees at stock speed and 87 when overclocked but to be fair to MSI the Sager has a much louder and more aggressive default cooling profile the after mentioned cooler boost button on the MSI really cranks up the fans and would undoubtedly result in lower temperatures in any event though the msi ran quite a bit cooler on battery thanks to throttling to save power we also saw a difference in GPU boost with the MSI GTX 980 ending up twenty six megahertz lower than the Sager at stock the MSI CPU also didn't overclock as well as applying a 100 megahertz offset only resulted in an actual clock speed increase of 65 megahertz but where the MSI really struggled was when we unplugged it and ran the low test on battery power here the GTX 980 maxed out at only 256 megahertz way lower than the stagers 734 here we can see the differences in design philosophy between the two models while segre designed theirs to be a true replacement for your high-end desktop rig and the size seems to be more focused on building the 980 into a more traditional conservative mobile platform which was ultimate being lighter smaller and quieter but not as great in the performance Department with that said you'd probably think that the MSI would give us more longevity due to a lower power processor and more aggressive throttling on the GPU but sadly this was not the case our benchmarks added up to roughly 16 minutes of gameplay time which drained both the MSI and the Sager by a whopping 39% each meaning you'll be hard-pressed to get an hour of gameplay time out of either model however the MSI was only able to manage 25 fps in Crysis 332 in Tomb Raider and 35 in battlefront with the settings cranked up at 1080p when you consider that the say Curitiba rates of 45 65 and 67 respectively for the same percentage of battery drain however the experience was much more positive when we plugged it in where it managed frame rates that took full advantage of the screen 75 Hertz refresh rate and we're only slightly lower than the sagres possibly due to MSI's notebook class CPU overclocking our CPU and GPU gave us a nice little bump of 4 to 5 frames per second Squarespace is a simple platform for building powerful 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bye
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