late-2017 13" Lenovo Yoga 720 + R9 [email protected] (OMEN Accelerator) + Win10 [theitsage]  

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theitsage
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October 16, 2017 2:09 pm  

The 13" Lenovo Yoga 720 is one of the first Thunderbolt 3 laptops to sport an Intel 8th generation quad-core ULV processor. The unit I got has an i5-8250U CPU. Intel claims these quad-core Kaby Lake-R models are 40% faster than the dual-core Kaby Lake predecessors. What about eGPU performance improvement?

I'm sorry to say I don't have a definitive answer yet. The Lenovo Yoga 720 lineup is crippled with x2 PCIe lanes over Thunderbolt 3 connection issue. The 13" model is also effected by OPI GT2 low-power mode. These issues are bigger concerns to eGPU performance than dual vs quad core CPU.

I recently reviewed the OMEN Accelerator and besides this Yoga 720, I also tested the Razer Blade Stealth. The Razer is one of the few ULV ultrabooks to have full x4 PCIe lanes and runs in OPI GT4 high-performance mode. Take a look at the benchmark results. Far left is Razer Blade Stealth external display mode, middle is Yoga 720 external display mode, right is Yoga 720 internal display mode.

 


13" Razer Blade Stealth, external display
i7-7500U @ 2.7Ghz, 2C, 4-lane TB3

13" Lenovo Yoga 720, external display
i5-8250U @1.60Ghz, 4C, 2-lane TB3

13" Lenovo 720, internal display


 

Here are additional screen captures of AIDA64 to confirm half bandwidth of the Lenovo Yoga 720 when compared to the Razer Blade Stealth.

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Sky11
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October 16, 2017 6:21 pm  

Could please also indicate OS versions, AMD and Intel drivers used?

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts


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thendless
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October 17, 2017 1:30 pm  

Really unfortunate the Lenovo is crippled. I am really curious about the 8th gen performance with full lanes 

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theitsage
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October 17, 2017 1:38 pm  

I'm on the look out for an ultrabook with the 8th gen, full four lanes, and GT4.

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thendless
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October 18, 2017 4:23 am  

Spectre 13 X360 looks like a good candidate.

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theitsage
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October 19, 2017 1:28 pm  
Posted by: Sky11

Could please also indicate OS versions, AMD and Intel drivers used?

Razer Blade Stealth: Windows 10 build 15063, Intel 21.20.16.4541, and Crimson ReLive 17.10.1

Lenovo Yoga 720: Windows 10 build 15063, Intel 22.20.16.4691, and Crimson ReLive 17.10.1

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4chip4
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October 19, 2017 2:50 pm  

Can you please also verify/note the FW version of the Omen Accelerator?

2017 HP Spectre x360 15 i7-8550U GTX150 + [email protected] (HP Omen Accelerator) + Oculus Rift + Win10 [no guide] HP Omen Accelerator Thunderbolt 3 enclosure legs stand removal walkthrough
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theitsage
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October 19, 2017 2:55 pm  
Posted by: 4chip4

Can you please also verify/note the FW version of the Omen Accelerator?

Definitely. I only know how to check in macOS. It shows 25.25 on the unit I have.

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wusel
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October 25, 2017 6:27 am  

@theitsage: You say that the 720 has 2 lanes available but doesn't your hwinfo screenshot show 4 lanes? I'm a bit confused.

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mantide
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November 15, 2017 8:31 pm  

Hi, will the late-2017 yoga 720 be charged through the GPU dock?

Planned solution is Aorus Box + yoga 720.

Thanks.

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theitsage
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November 15, 2017 9:21 pm  

@mantide, the Yoga 720 takes charge from eGPU enclosures with power delivery. In my opinion, skip the Yoga 720 and go for the 920.

@wusel, look at Bus #6 right under PCI Express Root Port #3. It's a x2 connection.

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mantide
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November 16, 2017 12:34 am  

@theitsage, yoga 720 is CHEAPER though, with difference in slower TB3 bandwidth, smaller screen, (slower ram) and less build quality. I am not really after the GPU performance.

For 8G RAM + i5, Yoga 720 < $800, yoga 920 < $1000 for almost same internals. Can't choose..

And what do you think of yoga 920 compared to HP spectre in the deal you mentioned?

I would prefer a convertible.

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theitsage
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November 16, 2017 6:16 pm  

The 13" X360 i7-8550U is a great deal during Black Friday. Performance should be the same as the Yoga 920. I don't like how narrow the trackpad is on the HP though.

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mantide
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November 18, 2017 11:04 pm  

@theitsage, I think I will buy HP Spectre x360 15 4k. Do you see any downside? Thanks.

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4chip4
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November 19, 2017 3:02 am  

Note that unlike the 13", the 15" Spectre x360 has x2 lanes due to the extra MX150 in it. I have that model and I don't find x2 too much of a handicap TBH, but then, better to know up front if you're after every last bit of TB3/eGPU performance.

2017 HP Spectre x360 15 i7-8550U GTX150 + [email protected] (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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mantide
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November 19, 2017 4:33 pm  

@4chip4 , Thanks! That's good to know. I just wish the 13" x360 has a dark color theme.

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4chip4
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November 19, 2017 4:59 pm  
Posted by: mantide

@4chip4 , Thanks! That's good to know. I just wish the 13" x360 has a dark color theme.

It does, though obviously black friday deals and specific countries might be limited to certain colors (in fact, in the UK it's the light silver one that tends to be unavailable).  

2017 HP Spectre x360 15 i7-8550U GTX150 + [email protected] (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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davidliu9518
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January 20, 2018 12:39 am  

Hi,

I saw your other post with yoga 920. I have got a yoga 920 and Omen egpu, but I can't get them working properly. I am wondering if you have got the omen egpu working with yoga 920? If yes then which thunderbolt driver should I use?

Thank you so much!

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davidliu9518
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January 20, 2018 12:43 am  

Hi,

I saw your other post with yoga 920. I have got a yoga 920 and Omen egpu, but I can’t get them working properly. I am wondering if you have got the omen egpu working with yoga 920? If yes then which thunderbolt driver should I use?

Thank you so much!

 

Soon I will add my system & eGPU details or a build link to this my signature to give context to my posts


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