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i7-7700HQ vs i7-8550u??  

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HeelToeNick
(@heeltoenick)
Active Member
Joined: 3 years ago
 

So I got on a chat with Dell and their sales team did not know so they had to get back to me. They surprisingly followed up very quickly. So the models with the 1050ti and 1060 have a tb3 and the model with the 1050 does not. So it’s very good specs for the price. I asked about pcie lanes but he did not let me know. I’m assuming Dell would be smart enough to go to 4 lanes on all models now with the XPS 15 complaints. 

I am am worried about portability with a unit that size since i have to take to from home to Campus every day for the next year. Im actually leaning towards the Aero 14 1050ti or Razer. I know the 1060 is overkill in the Razer but it allows me time to buy a larger housing with a stronger card rather than getting the Aorus and not having upgradeability.

Also the undervolting looks very effective in controlling temps. Good to know when fine tuning the set up.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

@heeltoenick, the Inspiron 15 with TB3 is a very nice system. H systems do not have the 12 PCIe lane limitation of the "U" ones (eg: 4-lanes for PCIe SSD, 4-lanes for dGPU, 1 for wifi, 2 left for TB3 controller), so it is unlikely Dell will implement a 2-lane TB3 controller on such a high performance system.

The other good news is the TB3 security settings are accessible in the BIOS. At least they were in the 7th-gen Inspiron 7577.  This allowed it's TB3 to be enabled so could be functional in a Hackintosh macOS build:

https://www.tonymacx86.com/threads/guide-dell-inspiron-7577-high-sierra-10-13-2-with-thunderbolt-3-working.241575/

With it's GTX1050Ti/1060 dGPU already, you may find performance adequate to forego a TB3 eGPU altogether. An option to consider down the track.  Consider you'd need a GTX1070 TB3 eGPU outputting to an external LCD to better the GTX1060 dGPU's performance.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


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HeelToeNick
(@heeltoenick)
Active Member
Joined: 3 years ago
 

@nando4 I was thinking the same thing. The 1060 is pretty powerful but with my VR needs I'd really like to have something a little more powerful at home. 

There's so many good options out there at the moment it makes it tough to decide which direction I want to go.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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4chip4
(@4chip4)
Estimable Member
Joined: 3 years ago
 

My experiences are that going from 7500U to 8550U was definitely a big step up in VR performance. The cooling is certainly not quiet under load, but thermals seems to be in check, so I don't mind.  I also have a device with a 7700HQ and while I did no benchmarks, the subjective performance felt largely on-par with the 8550U for most the VR apps, when paired with a GTX980 (while the 7500 was noticeably behind these two).

2017 HP Spectre x360 15 i7-8550U GTX150 + GTX970@16Gbps-TB3 (HP Omen Accelerator) + Oculus Rift + Win10 (no guide)
HP Omen Accelerator Thunderbolt 3 enclosure legs stand removal walkthrough
Employed by HP, but my posts and opinions expressed on this forum are my own.


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genium me
(@genium_me)
Active Member
Joined: 3 years ago
 

Why did i not find this earlier? I have exactly the same choice and looked at the same options, first the Matebook x pro then the aero 14 (in between the XPS 15 which is off the list by now again) and currently at the G3. Sadly neither the G3 nor the matebook x pro are availible in germany at this point in time which is extremly annoying. 

I also talked to Dell support and yes the G3 is certainly a 4xPCIe (the matebook is btw only a 2x in case you didnt know), I would be interested if anyone actually has accurate data on the difference the 2 vs 4 pcie makes when not using a box with usb dock (and obviously an external display) also could someone clear up why the resolution seems to matter ? with 4K havin LESS power loss then 1080p >.>? All i currently have is this https://egpu.io/forums/mac-setup/pcie-slot-dgpu-vs-thunderbolt-3-egpu-internal-display-test/ and https://egpu.io/forums/pc-setup/2-lane-vs-4-lane-tb3-performance/#perf.
To my knowledge, following the above linked and some small other stuff, on an external display the difference should be very minimal if existant at all - please let me know if you know more.

About the Aero 14, due to a lack of reviews, the massive bezle which kinda goes against my idea of portable, the slow SATA SSD, and the high price of 1799€ this one is no longer on my comparison list. maybe these considerations help you aswell. Also be aware that the Aero 14 is send with single slot 16GB ram so if you want to have dual channel you are kinda forced to go to 32.

In favor of the Matebook is the low weight, thinness and overall portability, especially with the usbc charger. The amazingly good SSD and thermal arrangement of this laptop is just another plus.  And obviously that screen o.O. While the battery runtime is great i do worry about the quad core 8550U compared to the 8750H (around 35% more power) and i dont have any solid data on how much this will impact performance 🙁  If you decide to get a matebook do a reinstall of windows, it seems the partitioning wasnt well done and is a little small Grin
This now goes back to the question of USB ports or other docks hurting your performance even when not in use - if this is true you should certainly not get a box with any ports for the matebook, which means you should get a razer core if you want to optimize performance. See here https://egpu.io/forums/thunderbolt-enclosures/for-the-best-egpu-performance-should-we-not-use-the-usb-ethernet-on-the-egpu-box/#post-37336

The G3 is just amazing value, btw you can also get the TB3 port when going for the i7 version, this OR the 1050Ti/1060 and you get a TB3 4xPCIe option. Also definitly make sure to get the better wifi card on this device the standard one is just bad. You can save a few bucks by getting a linux version and buying & installing Windows yourself.  I can also highly recommending getting a 1x8GB ram for this one and putting in a second one yourself, this is likely the easiest laptop to upgrade i have ever seen its literally 1 screw Smile also a plus here is the addition of an Ethernet cable and the 3 USBA ports. Keeping this laptop cooled is quite a task, and usually you will see some throtteling, still it far outclasses any 8550U CPU obviously. Sadly it also uses a slower SATA SSD - and even the port seems to not support high speed NVMI ssds - better then SATA but nowhere near matebook level.

 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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4chip4
(@4chip4)
Estimable Member
Joined: 3 years ago
 

The 4K loss is smaller because the 4K bottleneck in those tests is the GPU, while on 1080p, the bottleneck is the available PCI bandwidth. This doesn't mean "it works better in 4K", just that 120 vs 100 fps (for 1080p) is a bigger drop than 25 to 23fps (for 4K). Just like attaching the same trailer to a truck will decrease the top speed less than if it was attached to a passenger car.

2017 HP Spectre x360 15 i7-8550U GTX150 + GTX970@16Gbps-TB3 (HP Omen Accelerator) + Oculus Rift + Win10 (no guide)
HP Omen Accelerator Thunderbolt 3 enclosure legs stand removal walkthrough
Employed by HP, but my posts and opinions expressed on this forum are my own.


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genium me
(@genium_me)
Active Member
Joined: 3 years ago
 

This means we will consistently see eGPUs struggle more when trying to get higher framerates compared to desktops? independent of those framerates being on 1080p (f.e with a 1070) or on 1440p (f.e. with a 1080) or on 4k (1080ti) Is this about correct as a conclusion?
Is it therefore reasonable to assume that reaching 110 to 120 frames on a UW QHD (3440x1440p) display is not not realistic when playing most (modernish) games? (even when accounting for reasonable improvements with the 11 series GPU?)
Now is this tied to the eGPU setup or to the CPU that is used not being able to handle higher fps? (the 8700k is still over 85% stronger then the 8550U, and (only) about 25 to 30% above the 8750H)
this brings up the CPU question again,  does anyone have data on using the 8750H instead of the 8550U or 7700HQ?
This review leaves me to believe that something about the 8550U is better suited for eGPUs then the 8750H is ( https://www.ultrabookreview.com/20435-xps-15-9570-review-live/#c0 see section Thunderblot3, also the scores of the dell xps 13 are overall quite good arent they!?) 
I have seen reports on reddit of people who had far better results on the 8th gen then on the 7th gen with eGPUs (will try to find it again and link it here), I wonder if any changes were done that benefit this kind of setup? Last year i read that intel wants to integrate TB3 into their upcomming CPUs, https://www.tomshardware.com/news/intel-integrates-thunderbolt-to-cpu,34501.html did this actually happen, are there and news on this idea at all? i cant seem to find any information thats less then a year old 🙁

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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