HP EliteBook 840 G5 Notebook thunderbolt 3
 
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harkonnen
(@mehenn)
Estimable Member
Joined: 3 years ago
 

Hey guys!

 

I am wondering if anyone knows if this baby ( https://support.hp.com/gb-en/document/c05903000 ) can be used with a Razer Core X Chroma (I think it has TB3). On that link it says it has a TB port, but that is all I know...

 

Thank you!

late-2016 13" Macbook Pro + [email protected] (TB3 to TB2 adapter) (AKiTiO Thunder2) + macOS 10.12.3
late-2016 13" MBP + Quadro M2000/FirePro WX5100/GTX750-TB3 (AKiTiO Thunder3) + macOS 10.12.3
(Custom Thunder cables)


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itsage
(@itsage)
Illustrious Member Admin
Joined: 3 years ago
 

@mehenn It has a Thunderbolt 3 port but only 2 PCIe lanes. The good news is you may use the NVMe M.2 slot inside for better eGPU performance. @Nando4 has built one and it posted impressive numbers. If you prefer Thunderbolt 3 connection for convenience and power delivery, I’d recommend going with the HP EliteBook 840 G6.

 

external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide


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harkonnen
(@mehenn)
Estimable Member
Joined: 3 years ago
 

@itsage

Thank you!  How portable will be with the M2 connector? Won't that be sticking out of the bottom of the case prone to tearing up?

late-2016 13" Macbook Pro + [email protected] (TB3 to TB2 adapter) (AKiTiO Thunder2) + macOS 10.12.3
late-2016 13" MBP + Quadro M2000/FirePro WX5100/GTX750-TB3 (AKiTiO Thunder3) + macOS 10.12.3
(Custom Thunder cables)


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nando4
(@nando4)
Noble Member Admin
Joined: 3 years ago
 

@mehenn , Elitebook 840 G5/G6 are very nice laptops.  If getting the FHD non-touch version, look for the automatic light sensor (ALS). System equipped with the ALS come with the 400nit LCD, rather than the non-ALS 220nit LCDs.

For eGPU use, my 840 G5 with a M.2 egpu was very fast, eg:

https://egpu.io/forums/pc-gaming/forza-4-benchmarks/#post-53800

Problem there is the system only has one M.2 slot.  Theoretically, the SSD could be swapped in/out but given the value of data, it’s hardly practical. The better solution is to use the WWAN slot to host a x1 2242 SSD as discussed, liberating the x4 3.0 M.2 slot for eGPU use. Or use a TB3 eGPU.

Some other pointers:

– HP’s recent BIOS disables undervolting You’ll want to rollback to an older BIOS if wish to unlock undervolting and increase TDP.

– the dGPU model has a beefier heatsink, useful if undervolting/TDP unlocking and wanting to turbo the the highest multiplier without temp throttling

– 840 G5 has  a 2-lane TB3 port due to the Kaby Lake CPUs having only a total of 12-PCIe lanes.

– 840 G6’s Wiskey Lake CPUs have 16-PCIe lanes. HP could now have a 4-lane TB3 port but couldn’t find verification of it anywhere.

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

2015 15" Dell Precision 7510 (6th,4C,H) + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 // compares M.2 vs TB3 performance


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