Car Rads often have this though typically copper tubes with aluminum fins. But you could have copper at the block with aluminum rad. Often though if you don’t do a custom build you often don’t know what there putting into the AiO. Algae build up shouldn’t occur but suggests cheaping out on quality coolant which isn’t that expensive.
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Brass tubes IIRC from when I was a mechanic 
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I haven’t seen brass tubes in awhile. Usually friends and myself scrapping rads were primarily aluminum. Keep in mind Brass is IIRC copper and zinc mixed.
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and there we have it… You are pretty sure…
but failed to deliver an AIO that mixed Copper an Aluminium. I rest my case
Nonetheless, I don’t think I will ever consider buying another AIO cooler again.
Aluminum is less of a problem in car radiators. Such finely spaced cooling fins as used on PC water cooling blocks are not used in cars, and large quantities of much more aggressive chemicals in antifreeze solutions are typically used in cars.
Ah, this is sad. Goodbye SLI. I would have actually used it for VR.
Hello LN2. We are going to need it now. For both the GPU and CPU.
tbh, SLI as it exists is not very good. Vulkan and DX12 has multi-gpu support that works on all cards no matter if they support SLI or not. Sadly, this needs the developers to do more work to support and no one cares to pay for it. SLI had the advantage that nVidia did most of the work in their drivers which made it almost cost free to support for developers, So while SLI is dead, multi-gpu is not, technically. just that no one actually implements for it.
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The 1% framerates are indeed disappointing though. I hope those do not apply to other commonly supportable multi-GPU solutions, such as Vulkan.
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Yep and brings the idea of gpus need not be the same. Years ago Id’s Rage Amd discrete card users discovered you could enable Nvidia’s Cuda with the mobo having onboard Nvidia. From what I recall Nvidia later fixed this in there drivers.
We need more Agnostic gpu things like mgpu.
90 hz would be very nice- isn’t that at the upper limit of what can be done with display port 1.4 and the 8KX?
Mind you, it’s all theoretical for me until I get a new graphics card. Surprisingly tho’, I can play some games even with my old nvidia 1080. Good card just two years ago!
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So You’re, in all seriousness, saying You’ll be running a permanent LN2 setup for gaming…? 
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Switchable. Like I said, quick disconnect fitting to external cooling machine. So at the push of a button, the cooling machine would signal the computer suspend to RAM, purge the water with air/gas, introduce LN2, and then signal the computer to resume from RAM and increase clocks about 50%.
The major cost of this, in theory, would be the high energy consumption to generate LN2. About $1-$2 per flight hour, reflecting about 10-20kWh to generate an hour’s worth of LN2 coolant.
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the trouble with ln2 is that things can get too cold, you’d need some way to control that
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Depends on where You live (electricity isn’t equally “cheap” everywhere).
I think it’ll be a tiny bit over most people’s “entertainment budget” (and perhaps a smidge overkill) but what do I know…
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Ok, I see the ‘money mouth face’ emoji. Keep in mind the VR workstation computer would not ‘burn’ much LN2 at idle, so that high power consumption only happens while actively flying, the cost per flight hour is still 10000x less than a real jet aircraft, and comparable to what we already spend on computer hardware if we can get 1000-2000 flight hours over two years before upgrading…
For me, the capital cost of buying a new CPU and GPU will be the big hit. And that is where I may need to raise some funding… I have a lot of expensive projects.
Moreover, the LN2 doesn’t have to be used at all for most flights. I suspect most people would only flip the switch from water to LN2 when actually needed.
Which is why I am planning to fill the case with dry gas (ie. helium). So no concern about frost, and lower thermal stress, since everything is rather cold, rather than a -200degC cold spot next to room temperature stuff.
I suspect most people wouldn’t buy such a complex and inevitably costly solution. Maybe aviation firms etc, but not people wanting to play in their basement… They want stuff that “just works”… 
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funding… hmm wonder if people would back a kickstarter for getting me a new computer, i mean surely they’d see the benefits… i might even get hold of some stickers or something as backer rewards…
anyways i’m myself kicking around the idea of an in case sub-ambient environment, but I was not that ambitious and more thinking chilled ranter than cryo.
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I really hope You get this done some day but it all just seems a bit over the top… 
Good luck on the project though. If You make it You can probably sell a few units to governmental institutions or other “endlessly funded” entities… 
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I suspect ease of use and capital cost are much greater concerns, than cost per flight hour. This system need not be much more ‘complicated’ than a couple welded aluminum plates for the PC enclosure, a few cheap QDC plumbing connectors, a few soda-bottle sized LN2 tanks, a switch, and a wattmeter plug to ensure the changeover from water to LN2 only happens while the system is at safe low power.
The i9-10900k CPU and RTX 3090 GPU are going to be the expensive parts.
Obviously any educational, corporate, or public sector institution with the funding for actual flights in the first place would find such a system very cheap indeed, but I suspect they can just get companies like Eagle Dynamics to just make versions of DCS World that work on computer clusters dedicated to the purpose…
Those folks probably have access to a lot of software and hardware we don’t.