6820HK with 1080GTX vs 7820HK with 1070GTX

Discussion in '2015+ Alienware 13 / 15 / 17' started by prastis, Jan 8, 2018.

  1. prastis

    prastis Notebook Consultant

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    Dear All,

    I think I am ready to press the button on an alienware dell outlet laptop.

    There are currently two options which interest me, which i want your opinions on.

    There is one with 6820HK with 1080gtx without SSD (scratch and dent) for around 1700GBP
    Another one with 7700HQ with 1070GTX with 256 PCIe SSD (scratch and dent) for around 1650GBP.

    Taking into consideration that the 6820HK version is older and more prone to the heatsink design, as well as the lack of ssd, I am guessing the second option is a better choice correct? Also, the 1070, I am guess it produces less heat, so with a bit of overclocking, would it reach 1080's performance or at least close the gap?

    I want the laptop to last a few years (4 minimum), and taking into consideration I will be getting the 1440p 120hz screen variant, I want a card that will benefit me the most of the years to come and make my screen worthwhile. I wouldn't say I play very demanding games, or I am a graphics freak, who wants everything on ultra to be happy. As long as I can take advantage of the 120hz in the future, with pleasant graphics I will be happy.

    Finally, last question, all the 1440p 120hz screens are with GSYNC correct? BEcause the description on dell website doesn't specify GSYNC, but as far as I know, its there.

    Thank you in advance.
     
    Last edited: Jan 8, 2018
  2. TheDantee

    TheDantee Notebook Evangelist

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    6820HK with the 1080 much better deal IMO
     
  3. prastis

    prastis Notebook Consultant

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    Yes, maybe that is the case, since I saw that it was a 7700 instead of a 7820 (my eyes are playing games). Are there considerate disadvantages concerning 6820 vs 7820, except from speed? Is the fact that the one is older going to have any considerate drawbacks?

    Also the model with 6820hk isn't prone to have the old WHD panel that had issues? or chances are that they replaced it?
     
  4. TheDantee

    TheDantee Notebook Evangelist

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    I don't much about the 17 R4 and it's flaws but being a BGA GPU and CPU it always best to go for the best possible so u don't have to upgrade as then u will need a whole new motherboard... 1070 vs 1080 is a much larger difference then a 6820HK vs 7820HK (you can compare using game-debate or userbenchmark) so technically speaking the 1080 6820HK system will last u longer as u could easily OC the 6820HK to 7820HK Speeds... Where as a 1070 vs 1080 overclocking that difference is a little bit harder

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  5. Pete Light

    Pete Light Notebook Deity

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    Hi there, I've owned several of both the skylake and kabylake R4s so I guess I'm well qualified to provide some answers here.
    Yes all the QHD screens you speak of are G-Sync. Performance wise the difference between the two CPUs is pretty negligible unless you are planning on overclocking the 6820HK which can yield 4GHz. if you do, then you're looking at a 10-15% difference in clock speed but quite a noticeable difference in FPS also.

    Having said that I'd recommend you get the 7700HQ. For me, the 6820 was only just capable of handling a 1080, the PCH (even with custom cooling mods) still gets very hot (mid 90s plus) when running at 4GHz and you're more likely to have an old **** paste, inferior heatsink and pads, cooling issues right out the box and a display with horizontal lines across it it. Although this would likely be negated if you got a laptop cooler or didn't overclock anyway.

    The 1070 can be overclocked but it will be no match for the 1080, that's the only card that will guarantee medium or higher settings up to 120FPS for the next 4 years at QHD resolution. The 1070 is still a good pairing with the 7700HQ though, the CPU is just about powerful enough to keep up with the GPU and a solid 60FPS+ should be possible at medium or higher settings with QHD for 4 years.

    Final note: I notice You're in the UK, recently I sent back my old skylake of that configuration to Dell. Just for ****s and giggles I stripped it down completely before I sent it back and fixed every problem with it. So if you're lucky you may be picking up that one... (came with 32GB RAM and a 512SSD)

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  6. Pete Light

    Pete Light Notebook Deity

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    Correct, although he mentioned it was the 7700HQ not the 7820HK. There's a large difference between the performance of these chips!

    Your advice is still valid though

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  7. TheDantee

    TheDantee Notebook Evangelist

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    From what I can tell it's a 9% difference and you lose 2MB of Cache... This is not at all a big deal in most cases and u can OC the Cache and the chip to make up for as much as the loss possible I would rather be short 2MB of Cache than having a much worse GPU which is more important for gaming anyway. The GPU will allow him to play games longer (4 years like asked) at better settings than the lower end gpu and the better cpu. CPU helps in games of course but doesn't make as big of an impact as a GPU. For budget systems I still recommend gen 1, 2 and 3 i7 CPUs and for really low budgets I recommend the FX Line (for gaming and rendering there's nothing it can't really handle) if people can game on something like a 2700k today with a new GPU it shows my point that cpu doesn't have as big of impact. Now keep that in context you don't pair a Pentium with a 1080Ti ;)

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  8. prastis

    prastis Notebook Consultant

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    Guys thank you very much for your assistance. The models have changed again. Now the 1080 version is way too expensive compared to 1070 model. Will see what I will do. Is the 1080 worth 400 more pounds? my brain tells me no :p

    Don't get me wrong, I am not a gaming junkie, I just want to be future proof!
     
  9. TheDantee

    TheDantee Notebook Evangelist

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    400 more.... No probably not... I recommend getting some thermal grizzly liquid metal paste for the cpu and GPU, from what I hear that system has some heating issues so hopefully that paste will allow u to clock a bit higher or in the least keep ur Temps lower :)

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  10. TheDantee

    TheDantee Notebook Evangelist

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    Who are you buying from? If it has a scratch and dent u could try to say they dropped it and u want it lower for that reason. It's always to go for the best ur wallet can buy... But it doesn't even have an SSD which kinda makes it hard to say go for the 1080 model. But being BGA and not replaceable it's really up to u... If u ever want to upgrade from a 1070 u need a new motherboard (check eBay) which will cost more than an SSD, a 256GB SSD at that.

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