I have a exp gdc beast v8 and GTX1070 as the eGPU. Power is supplied by 450w ATX. I found there are some problems when connect to both laptops.
CPU: i5 3320m (can upgrade to i7 2760 am)
Memory: 4 x 2G (can upgrade to 2x8G)
a. Blackscreen when start up no mater how to set the switch.
b. Tried pin 22 isolation. Start up correctly on both "7s" and "14s", however, system can't detect the card. Look furthermore in Aida64, the pcie port where the eGPU is installed is missed. When switch back to wifi card, the PCIe port appear again.
2. Dell E5420
This is the one I'm using. It is almost out of box and no need any further configuration. After installed win10 the 3Dmark FSE shows ~8000 for graphics card. 30~45fps for GTA5 all high setting on 1080p.
However, it has annoying instability issue. Game will randomly crash. Sometimes after 1 hour, 2 hours. Sometimes it works perfectly for 3 hours. One thing for sure is that if leave it running for whole night, no matter 3Dmark or GTA5 will crash at sometime. I do see there is suggestion that to run it under pcie 1.1 mode. However, is there any other one since it cause a lot performance loss.
CPU: i7 2760qm
Memory: 8G x 2
Since the same CPU/memory can be used for both laptop, I can try both and see which is the best one. The key concern is the performance and stability. Personally I tend to HP 6470b even though there is no success still now. However it's a newer platform right?
Additionally, I see in another thread mentioned that 2 pcie 1.1 X1 port can be linked to form a x2 port. Can the same apply to HM65/76 on pcie 2.0 X1 port?