jfraser Posted November 14, 2015 Share Posted November 14, 2015 @atheotsky: To be save you should get 120W and not less! 90W might work as well, but you should get some more power for peak power draws.@EvIl_DeViL: Both should be fine! 60W can be exceeded if the card draws up to 75W from the PCIe slot AND the AKiTiO draws up to 15-20W. So in worst case you will have to provide 95W through the barrel plug. Maybe even more, because some cards exceeded 75W on the slot and draw even more.In terms of setup, I think the easiest thing would be to use the original power supply along with a Dell DA-2 power supply. It might be easier to be able to plug in a single power cable, but this single power supply idea is liking like it's more work than it's worth. Besides, if you take the Akitio Thunder2 anywhere, you'll probably put it in a backpack, and you should have room for a power strip. To save yourself the effort of plugging in two power cables, you could keep the two power supplies plugged into the power strip. The power strip would allow you to have your eGPU and MacBook plugged into the same outlet while still having additional outlets available, which is particularly good because it's more considerate than taking up both wall outlets. Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 14, 2015 Share Posted November 14, 2015 I wouldn't recommend to use two PSUs at the same time! Quote Link to comment Share on other sites More sharing options...
jfraser Posted November 14, 2015 Share Posted November 14, 2015 I wouldn't recommend to use two PSUs at the same time!Why not?Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 14, 2015 Share Posted November 14, 2015 That is based on informations I got from bitcoin mining forums. Some people mixed PSUs to power 4-10 (or even more) and fried their mainboards (PCIe slots) because of ground loops. That is when power from multiple PSUs are using not all their grounds and the grounds of the other PSU instead. Quote Link to comment Share on other sites More sharing options...
jfraser Posted November 14, 2015 Share Posted November 14, 2015 That is based on informations I got from bitcoin mining forums. Some people mixed PSUs to power 4-10 (or even more) and fried their mainboards (PCIe slots) because of ground loops. That is when power from multiple PSUs are using not all their grounds and the grounds of the other PSU instead.What about desktop users who use an external power supply for their graphics card?Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 14, 2015 Share Posted November 14, 2015 In general they are using one PSU… Quote Link to comment Share on other sites More sharing options...
EvIl_DeViL Posted November 15, 2015 Share Posted November 15, 2015 @jfraser I'd like to use just the barrel plug to avoid messing too much with connections which can catch fire/melt easely with such high amps. why should I use the default psu when I can just stick just only with a far better desktop PSU? It's like fueling a car with 40l of gasoline and a AAA battery. @Dschijn you're right. If you want to use different power sources you MUST common ground them. The second plug is rated 16v 8amps (128w). Since heat is The only thing I think is worth rating a dc plug I feel more comfortable with that, even because I'm going for a hungry gigabyte 970 Quote Link to comment Share on other sites More sharing options...
atheotsky Posted November 16, 2015 Share Posted November 16, 2015 @Dschijn, thank you for your answers , it seems i don't have many choices here . if i'm going to use Dell DA-2 12V 18W , is it ok for me to plug it directly to AkitiO box ? this type power Supply is popular in my country , but i'm not sure if it's ok to use with AkitiO box http://www.amazon.com/gp/product/B008MU0CHG Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 16, 2015 Share Posted November 16, 2015 You need to build an adapter to conenct the DA-2 to the AKiTiO and to the GPU, because the plug of the DA-2 is proprietary.The PSU from amazon is fine, if you are going to use the 12V version and no card that needs more than 80W. Quote Link to comment Share on other sites More sharing options...
Paulis1992 Posted November 16, 2015 Share Posted November 16, 2015 Hello, I would like to build eGPU, so I can boost my Macbook pro mid 2014. I was thinking about bizconbox, but as I understand, it cannot operate with as much speed as Akitio. I am sorry if somebody already asked these questions: All I need for building eGPU is: Akitio Thunder2 PCI Box(with thunderbolt cable included), Dell DA-2 (for gtx 970), GPU (as I said gtx 970). Is that really all I need? Another question: How difficult is it to assemble these components together? Is it only about connecting pins, or I need more skills for it to set it up? If I need more skills, is there any basic manual how to do it? Thanks for your time Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 16, 2015 Share Posted November 16, 2015 @Paulis1992: The Bizon is basically a rebranded AKiTiO…It isn't that hard to assemble an eGPU, but it is more than just plug 'n play: http://forum.techinferno.com/apple-egpu-discussion/10061-basic-egpu-hardware-guide-macs.html Quote Link to comment Share on other sites More sharing options...
Paulis1992 Posted November 16, 2015 Share Posted November 16, 2015 So what would I need to do with the components I mentioned above?As I read in the thread you posted, I would need this Startech PCI Express 6 pin to 8 pin Power Adapter Cable: Amazon.co.uk: Computers & Accessories to connect Dell DA-2 with GPU(gtx 970). Is that all I need for making it work? Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 16, 2015 Share Posted November 16, 2015 The Dell DA-2 has a special 8-Pin connector. You need to bring that 8-Pin to a barrel plug to power the AKiTiO and 6/8-Pin plugs to power the GPU. E.g. some 970 have 2x6-Pin some have 1x6-Pin and 1x8-Pin. So you need 2x splitter cables. First to go from the DA-2 to power the AKiTiO and to be connected with the 2nd spitter. The 2nd splitter can than power the GPU. Quote Link to comment Share on other sites More sharing options...
Sachin10 Posted November 17, 2015 Share Posted November 17, 2015 I've added a new to show Far Cry 4 performance at 1080p with ultra settings. My setup includes an external display, a GTX 970 and a dual-core laptop. My framerate is normally between 40 and 60 fps. 1 Quote Link to comment Share on other sites More sharing options...
Paulis1992 Posted November 17, 2015 Share Posted November 17, 2015 The Dell DA-2 has a special 8-Pin connector. You need to bring that 8-Pin to a barrel plug to power the AKiTiO and 6/8-Pin plugs to power the GPU. E.g. some 970 have 2x6-Pin some have 1x6-Pin and 1x8-Pin. So you need 2x splitter cables. First to go from the DA-2 to power the AKiTiO and to be connected with the 2nd spitter. The 2nd splitter can than power the GPU.can you post the links for the barrel plug and the splitters I need? Best from amazon or ebay. Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 17, 2015 Share Posted November 17, 2015 6-pin pcie splitter | eBaybarrel plug 2.5 | eBay Quote Link to comment Share on other sites More sharing options...
jfraser Posted November 17, 2015 Share Posted November 17, 2015 6-pin pcie splitter | eBaybarrel plug 2.5 | eBayHow do you add the barrel plug to the splitter?Sent from my iPhone 6 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 17, 2015 Share Posted November 17, 2015 How do you add the barrel plug to the splitter?Please read: http://forum.techinferno.com/apple-egpu-discussion/10061-basic-egpu-hardware-guide-macs.htmlandhttp://forum.techinferno.com/enclosures-adapters/8317-%5Bguide%5D-making-molex-barrel-adapter.html Quote Link to comment Share on other sites More sharing options...
Rastafabisch Posted November 17, 2015 Share Posted November 17, 2015 Here's just a small reminder: I'm selling my Akitio eGPU setup. Take a look! Quote Link to comment Share on other sites More sharing options...
Tech Inferno Fan Posted November 17, 2015 Author Share Posted November 17, 2015 Here's just a small reminder: I'm selling my Akitio eGPU setup. Take a look!I've moved your advert and related reply posts into the T|I marketplace: http://forum.techinferno.com/notebook-components/11446-fs-akitio-thunder2-thunderbolt2-enclosure-gtx750ti-96w-ac-%5Bgermany%5D.html#post148534 Quote Link to comment Share on other sites More sharing options...
Rastafabisch Posted November 17, 2015 Share Posted November 17, 2015 Thank you. I didn't even no that there was a platform that for. Quote Link to comment Share on other sites More sharing options...
pyramidgod Posted November 25, 2015 Share Posted November 25, 2015 Im running the eGPU set up with the Akitio Thunder2, GTX 980 Ti SC 2.0, EVGA 850w Bronze and a Late 2013 Macbook Pro Retina maxed out for that year at 2.8 GHz Intel Core i7, 16gb RAM, 1TB SSD. I'm using this set up for Premiere and Davinci Resolve as CUDA.When my GPU isnt being used this is the performance in CUDA-ZMemory Copy Host Pinned to Device: 1275.23 MiB/s Host Pageable to Device: 1250.35 MiB/s Device to Host Pinned: 1380.52 MiB/s Device to Host Pageable: 1352.74 MiB/s Device to Device: 108.852 GiB/sGPU Core Performance Single-precision Float: 6971.89 Gflop/s Double-precision Float: 228.923 Gflop/s 64-bit Integer: 369.856 Giop/s 32-bit Integer: 2049.2 Giop/s 24-bit Integer: 1443.37 Giop/sWhen I'm playing 4k on my timeline in premiere I'm getting this from CUDA-ZMemory CopyHost Pinned to Device: 759.846 MiB/s Host Pageable to Device: 775.32 MiB/s Device to Host Pinned: 1022.51 MiB/s Device to Host Pageable: 666.432 MiB/s Device to Device: 95.5938 GiB/sGPU Core Performance Single-precision Float: 7053.49 Gflop/s Double-precision Float: 230.088 Gflop/s 64-bit Integer: 479.468 Giop/s 32-bit Integer: 2318.85 Giop/s 24-bit Integer: 1676.76 Giop/sIt doesn't play 4k in real time in premiere. It also only exports 4k at 14-10fps avg or lower and 1080p at real time for around 24-30fps to my RAID Thunderbolt 2 G-Drive. My CPU says its at 350% when running these processes. Is the CPU just bottlenecking everything? I saw people running setups off lesser CPUs with less powerful cards and getting better playback? HELP PLEASE ANYONE!! Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 25, 2015 Share Posted November 25, 2015 @pyramidgod: In OSX? Can you also monitor somehow the GPU load? 1 Quote Link to comment Share on other sites More sharing options...
tcrown Posted November 27, 2015 Share Posted November 27, 2015 Anyone used a Dell 240W power supply for Alien laptops with the Akitio Thunder 2, looks like the same connector but is the Akitio able to draw that much power?I'm planning a eGPU set-up for a Mac mini with an EVGA GTX960 mITX card that requires 128W but also with some room to upgrade the card down the road. Quote Link to comment Share on other sites More sharing options...
Dschijn Posted November 27, 2015 Share Posted November 27, 2015 @tcrown: A Dell DA-2 with 220W and most important with 12V is better. You can power cards up to a GTX970 with that. Quote Link to comment Share on other sites More sharing options...
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