External GPU advice
Hi Slackers,
I have been considering getting an external GPU for my laptop due to recently getting re-interested in flight simulators. The laptop is a Thinkpad T430 with Intel HD4000 graphics. My plan is to get probably an Nvidia card connected to a dock compatible with my laptop's ExpressCard slot and a separate power supply. I have a few questions that I'm hoping can be cleared up before I jump in, though.
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I wonder…
The Express card is pcie-1.0 speed, and by the time you're paying for Express Card Graphics Adapter & Graphics card, you've most of the price of a new box there. These things not in mass production don't come cheap. With a HD4000, your box is probably within a year of 2013 - not new. CPU upgrades are hardly on because there's a wattage limit on the cpu. Have you thought of a fresh box? |
Have to check -- it may actually bottleneck at PCIe 2 speeds, but it's still a restriction on the GPU's performance. And the CPU and RAM in the 430 are pretty weak by gaming standards.
I think the 430 had a variant with Thunderbolt, but I'm guessing not yours? |
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Edit: actually, I was mistaken. It doesn't have Thunderbolt. Regarding using an external GPU with my laptop rather than building a new box, my thinking is that the game already runs decently with the laptop as is, except in areas that have detailed scenery with a lot of buildings, or if I try to turn up the autogen vegetation or turn on antialiasing. I think a GPU upgrade would help a lot with that. But I suppose I should do a cost analysis of that versus building a relatively cheap desktop with the intended graphics card and a current low-to-mid-end CPU. I'm sure the new box would be more expensive in total, but maybe it would be close enough to make it worth it. It would certainly be more convenient than shutting down the laptop and plugging in the eGPU every time I wanted to play, plus managing 2 sets of video drivers, etc. |
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I suppose you could get a GPU you like with the external enclosure and if it doesn't work out, return the enclosure and keep the GPU for a new build. Also, although I personally use and like Nvidia, some AMD cards may work without proprietary drivers. But running two drivers in tandem is not something I've done so I don't know what the performance is like or if there are pitfalls. |
Okay, thanks. I will definitely do some research and do some price comparisons before deciding. I was thinking of getting AMD for just the reason you mentioned, but I have read that they don't work well for FlightGear, the flight sim I've been playing that motivated this.
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I just found this post which makes an eGPU seem pretty easy to use. Apparently it will even work on the laptop screen:
https://egpu.io/forums/thunderbolt-l...ks-flawlessly/ It's Ubuntu, but it sounds like the configuration is done through the Nvidia software. |
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I know I represent the voice of caution, but I really hope it works out for you guys.
I went to upgrade my (Samsung)box, found I could use no modern upgrade because the few cpu models that worked were so rare they were silly prices. And in some cases, the graphics were actually WORSE than what I have. Would your box fetch much secondhand? It might offset the cost |
luggable machine overcomes laptop issues
I use home-built luggable machines to circumvent the anemic performance of laptops. Laptop computers are limited by their ability to dissipate heat and are purposely throttled to keep them from overheating. There is also the video graphics adaptor problems that you are encountering. Most laptops have only one external graphics port and if you want to use an external graphics pad to assist in a presentation, there are few laptops that have multiple graphics output. Further laptop problems include backup storage options and storage, period.
I looked at the option of Alienware or Razor or other custom built laptops to overcome some of those problems. I used to always own both a desktop and a laptop which also created a problem of just which machine has the file that I want and lots of transferring of files which in one sense adds security of multiple copies but creates versioning issues of projects in development. All overcome-able but finally in 2013 I decided to try building my own personal luggable machine halfway between desktop and laptop, finally with the watercooling power of a desktop, multiple HDD, SSD, and NVMe drives, and heavy duty graphics, the power to run 4 monitors for online lectures with video camera, Wacom tablet, .ppt, .pdf, a decent keyboard and mouse, and all my files with me all the time. I have now built several mini/micro-sized boxes to run various projects around the lab and for my personal use. My latest iteration of this concept is an AsRock PG-ITX Z390 motherboard, i7-9770K, 16GB ram, 1TB NVMe SDD, 4TB HDD backup, GigaByte RTX2060 mini-ITX OC 6gb, 120mm AlphaCool dual inline fan radiator, 700W SFX powersupply and a LianLi TU15O portable case with two Noctua 120 mm filtered push fans and a 120 mm exhaust fan. The old wood base and open top shell box was easy to cool but Changping (北京昌平区) is dusty so this one is dust-proof. I run a wacom cintix 13 pad and 3 large monitors on my desk. I have no screen tears or glitches and can do video conferencing and livestream teaching or record-and-render with no hesitation or mishaps. I am much too busy for gaming. This portable machine fits into a carry-on box along with the keyboard, mouse, and the Wacom Cintix as a portable monitor. I am running Slackware64-current as my daily driver and I have Win10 for when I must have it and usually some other flavour of linux on a separate partition, presently kalilinux but i have had ubuntu and other debian derivatives at times for fun and rarely now for systemd stuff. We've got several dell laptops in the family and although I can't use my machine in the cafe or at the kitchen table, I never worry about battery power or any other sort of power to work. Further there's none of the crap-ware that comes with every commercial computer that takes time to clean out. |
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Gamers need the best of everything in an ideal world, that's all.
Of course your old cpu will work, and I don't even know what your cpu is. PCIE-1.0 (which I think is the Express card speed) is a limitation. If you go with what you're intending, you'll certainly get an improved experience. I hope it's enough to satisfy you. The sort of investigation you're doing convinced me not to upgrade my laptop at all, but to live with it. |
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Well, go for it. I'll be interested in how this works out.
The last Flight Sim I played was on a Sinclair ZX Spectrum, boasting 48k of ram which did pretty well for what it was, a 4Mhz Z80. It was a cassette tape for program loading and you had an interrupt every 20 milliseconds which updated the screen on your tv:). So your (pathetic) cpu was also your gpu. Different times! |
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