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Nick Vasey
(@nick_vasey)
Eminent Member
Joined: 2 years ago
 
Posted by: defvs
Posted by: Leto Atreides
I looked at some of the ADT-Link stuff and I could not find any place where you connect a power source to it.  I also found the EXP GDC for $13 vs $50 for the R43SG  What do you mean signaling issues?  And which version of the EXP GDC has these issues? (Surely if its a known problem, newer versions would have sorted it out by now?)

All version are affected to my knowledge. Their cable is really badly made. Cannot run even gen 2 signaling without often crashing.
The one EXP GDC you're talking about is an x2 lane if you paid it for 13$. The ADT-Link (find it here, 30$-40$ depending on cable length) R43 is an x4 link. But it can do Gen 3 where the EXP GDC cannot.

defvs, I think you're being a tad absolutist in the first three sentences of your statement (above): I - in fact - am running an EXP GDC Beast (v. 8.5c) at Gen 2 that is both stable and has zero signalling issues/crashes. There exists, of course, the off-chance I've just been lucky with my particular Beast.

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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defvs
(@defvs)
Active Member
Joined: 2 years ago
 
Posted by: Nick Vasey
defvs, I think you're being a tad absolutist in the first three sentences of your statement (above): I - in fact - am running an EXP GDC Beast (v. 8.5c) at Gen 2 that is both stable and has zero signalling issues/crashes. There exists, of course, the off-chance I've just been lucky with my particular Beast.

Yup; the EXP GDC 8.5 is only two lanes though. It all depends on the GPU and also your Gen speed. You are getting more perf. drop at Gen 2 x2 compared to an R43 at Gen 3 x4. But let's compare the EXP GDC 9.x which is x4 lanes. Comparison is my own experience, as I've owned a v9.5 before and returned because of the insane issues it gave me.
You'll get theorically a bandwidth which is 2 times greater on the R43 (Gen 3 x4) than on the GDC9.5 (Gen 2 x4) and that's considering you'll even run at Gen 2. Don't even imagine running Gen 3 with it.

You're saying that you are not getting any crashes. Please do try to see in the Windows Event Observer, in the System category, if you get some WHEA-Logger errors. Theses are signs of corrected errors. Which are not "crashes" but often shows that your PCIe link is not stable. Windows attempts to correct the errors in PCIe, and that creates random performance drops.

Laptop : Mi Notebook Pro, i5-8250u undervolted + TDP unlocked, 8G RAM 256G nvme, MX150-2...
eGPU : Asus STRIX 1060-6G running over ADT R43SL (15cm) M.2 with Gen3 x4

Greetings from France !


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Oussama One-Gamer
(@oussama_one-gamer)
New Member
Joined: 5 months ago
 

Am I need to get power supply whene the graphic card don't need it like gt 610 for work the exp gdc?

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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VesyCZ
(@vesycz)
New Member
Joined: 2 months ago
 

Hey guys,

I'd like to echo what Oussama wrote.

I've ordered EXP GDC 8 version and plan to use Dell DA-2 power brick and plan to start with some cheaper GPU, just to test if it works with my Dell 7490 in the first place. A lot of those cards (RX 550, RX 560) do not need additional power, they get it from the PCIE slot - does that apply also for the EXP GDC 8? Can it handle those cards? The power consumption of those GPUs is around ~50W so in theory the PCIE slot should handle it.

Can anyone confirm please?

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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joevt
(@joevt)
Noble Member
Joined: 3 years ago
 

@vesycz, I'm not sure about that. A PCIe card needs to ask for 75W before a slot will allow 75W. The default is 10W for x1 cards and 25W for x4 cards. 75W is only for x16 cards that ask for it. I don't think that communication exists for these kinds of PCIe risers which don't do x16 but I don't know for sure.

 

Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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VesyCZ
(@vesycz)
New Member
Joined: 2 months ago
 

@joevt, thank you sir, I'll rather pick a gpu with its own power input then.

 

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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Petnold
(@petnold)
Active Member
Joined: 3 months ago
 

About powering eGPU - I am trying to get a GTX 960 to run on my Precision M3800 with Beast 8.5. I borrowed this card, I am planning to buy later an RX 580 for this purpose.

Currently I have Dell's DA2 brick - 220W plugged into the Beast and another cable connecting Beast's side 6-pin socket with GPU's power supply port. This PSU seems to be enough for GTX 960, but I can not say the same about RX 580 which is way more power-demanding. Do you think I will need another, more powerful PSU?

I have also heard something about "power leaks" with the DA brick, is it still the case?

The GTX 960 works fine with my PC, for average of 40 minutes. It will always eventually crash. My laptop restarts, and the process is usually enriched with a beautiful bluescreen. I receive a load of errors like VIDEO_MEMORY_MANAGMENT_INTERNAL, DRIVER_POWER_STATE_FAILURE or VIDEO_TDR_FAILURE. Shoud I suspect power issues or just crappy EXP GDC's signaling? If thats the latter, can someone help me with switching my NGFF port's PCIe gen from 2.0 to 1.1 or 1.0? I would really appreciate it!

Seeking to build a eGPU on my Dell Precison M3800 (i7-4712HQ, 12GB 1600MHz, Win 10); possibilities: M.2 PCIe a+e socket or Thunderbolt 2


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chasseur_de_mer
(@chasseur_de_mer)
Active Member
Joined: 2 months ago
 

@petnold, regarding the power supply issue, maybe it's better to check the documentation for the RX580.

I'm using an EVGA GTX 970 SSC ACX 2.0, and the documentation said it needs at least 500w for a tower setup, so to be sure I got a 550 watt PSU, and I'm using the standard power setup on the EXP manual. Plus two 6-pin PCIE connectors from the PSU to the GTX 970 for supplemental power. I know it's overkill but at least I can also use the PSU for a future mid tower project if needed.

For the crashing, you might want to check if there's electromagnetic interference in your house from fluorescent lights with starters. My setup is in an upstairs room, but when someone flips on the fluorescent light in the ground floor, I get the video tdr failure BSOD.

As long as no one touches any fluorescent lights, and I don't touch any lights or electric fans in the same room as the setup, I can run Meshroom photogrammetry software all night with no problems. Turning on LED lights or even an air conditioner in a separate room also has no problems.

 

2018 14" Lenovo Ideapad 330-14IGM [7th,4C,P] + GTX 970 @ 4Gbps-M2 (EXP GDC 8.x) + Win10 [build link]  

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Petnold
(@petnold)
Active Member
Joined: 3 months ago
 

I am planning to buy a desktop when I move to another house, so I think I'll just go for a PSU of high power, most probably 750 W so that I could use it in future.

I am still fairly young and live with my family of six so I don't think I'll be able to just force everyone else not to use main living room lights, which are all fluorescent. I did not think that lamps downstairs can affect eGPU setup to such degree.

I will try to make a semi-professional EMI shielding with copper tape on this tragedy called EXP GDC cable. I would not place much hope on this solution though. Do you know how to switch my NGFF port to use PCIe gen 1 instead of 2? I can sacrifice those few frames for the sake of stability.

This post was modified 1 month ago

Seeking to build a eGPU on my Dell Precison M3800 (i7-4712HQ, 12GB 1600MHz, Win 10); possibilities: M.2 PCIe a+e socket or Thunderbolt 2


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DestinysChild
(@destinyschild)
Active Member
Joined: 2 months ago
 

Hey guys!

 

I got this GDC Expresscard as a gift and I wanna give it a go...

If using it with a 580 will the Dell DA2 provide enough power? Is there any better option I´m missing (talking about the psu, not the egpu)?

 

Thannks!

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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