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We have some ARM-based single-board computers at work, but I don't know of any ARM-based computer that allows for the configuration flexibility that you have in mind.
I know that at least some of these computers can run Windows for ARM, so Volterra is probably not MS's only target for this.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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That one is getting closer - but 96 cores may be somewhat over the top 
The price tag is one thing. That "someone has managed to get Window running on it" is not very comforting to me. The guy doing the porting says that "Windows on Arm has zero support for graphics cards yet" - that is not comforting, either.
Also, HPC guys (buying this kind of machine) are sort of conservative. Even though ARMv9-A is two and a half years old, they stick to ARMv8. USB4 is four years old, they stick to USB3. My current PC has a 1 TB M.2 disk - they stick to 256 GB. They stick to DDR4 (yes, I know that current DDR5 chips are significant below it theoretical potential, but yet!)
Yet, I am happy to learn that such machines are available, so thanks for the info - even if I am not going to buy one.
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As dandy72 suggested it feels pretty early to make the switch yet. Expect problems for the next year or two while they work out the kinks.
Technology-wise, hypothetically for laptops and such, ARM is good option since it's low power, but pretty full featured - at least the ARM Cortex As typically are.
For desktops and workstations not so much. I wouldn't want to develop on one yet for a number of reasons.
I'd wait before you replace a primary machine with an ARM.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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You can check out ThinkPad X13s (13” Snapdragon) Laptop Snapdragon® 8cx Gen 3 Compute Platform (3.00 GHz up to 3.00 GHz)
Caveat Emptor.
"Progress doesn't come from early risers – progress is made by lazy men looking for easier ways to do things." Lazarus Long
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A couple weeks back I decided that I needed a decent ARM machine in order to have a development box with weak memory ordering (especially important for Java since it doesn't hide the problems like x86/x64 hardware and the .NET platform do).
I did an extensive review. Based on that I got myself a cheap ARM-based Chromebook and a Macbook Pro. Since I use JetBrains IDEs I can pick up on the Mac where I left off on my Wintel notebook and vice versa; the only thing I really miss on the Mac is LINQPad. Based on a month of working like this I can only say one thing: I should have gotten myself a juicy Macbook as soon as the M1 chip came out!
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You may buy a MacBook Pro with an M2 and virtualize Windiws 11  .
Edited a type
Gilles Plante
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Thanks for all the replies. It seems quite clear to me that I am a (at least) a year or two early, asking for a proper ARM based desktop. I am not in a rush to upgrade (and the day I get an ARM desktop, I will most certainly keep my x64 running next to it - lots of my old software tools will never be ported to ARM).
I most certainly want more flexibility than a laptop or notebook; they are no more extendable than the Volterra (which I have considered and rejected; lack of flexibility is one reason). Not only would I like to play around with ARM; I have recently done some reading on CUDA, but my 660Ti card is too old for running many of the samples in the CUDA programming guides I have picked up. I would like to plug in a more modern card - not for the speed (except to see how fast I can get my own code!) but for the 'compute capability', as nVidia calls it.
Also, if I buy a new PC in late 2023 (or most likely 2024-25), I would want a reasonably modern architecture. ARMv9-A is two and a half years old; I won't go for older ones. USB4 is four years old; I won't go for USB3.
So, thanks for the information. It confirms what I suspected: I need not panic yet. My old PC will do alright for another couple of years. I have plenty time for learning more about both ARM and CUDA before putting it into practice 
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... but I emptied my work e-mail InBox this morning.
This hasn't happened in years.
Software Zen: delete this;
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Quick! Set up a Rule: "All incoming mail" ... "Send to Junk mail folder" 
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Long ago, when we still had physical inboxes, a coworker of mine spent some time the quiet days between Christmas and New Year to work through his inbox. Near the bottom of it, he found a wall calendar for the year that still had three days left.
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A few years ago, the team I was working with decided we needed a holiday planner for the year, so ordered one which arrived about the 18th March as I recall. We hadn't decided where to put it by the following Tuesday, 24th March 2020, when the UK government order a lockdown because of Covid-19 and we've all worked from home ever since!
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By "emptied", do you mean deleted/filed or just read?
I rarely delete anything from my Outlook mailbox and's currently showing that, across all folders, I have 88,913 unread messages! 6 of those are in the InBox.
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I use my InBox as something of a "to-do" list. Messages will sit there for days, weeks, sometimes 2-3 months. Once something's completed, it get moved to a topic/product/project folder.
Software Zen: delete this;
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My retirement age exceeds my life expectancy, so no.
Software Zen: delete this;
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Should we rename the Towers of Hanoi the Towers of e-Mail? 
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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People at work are stunned when, for example in a screen sharing session, they notice how organized my inbox is. I currently have 4 items, 3 flagged as important. Everything else is organized into folders by customer and third-party vendors, often with sub-folders on particular tasks and email correspondences. While the main inbox is not often totally empty, the # of items usually doesn't exceed a dozen by the end of each day. ![Jig | [Dance]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/jig.gif)
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Same here - but I never let others see it
"If builders built buildings the way programmers wrote programs, then the first woodpecker that came along would destroy civilization." ― Gerald Weinberg
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I joke that I cause rain by closing all my notepad++ tabs. It leaves a local vacuum and pulls in all the clouds.
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Same. And the last tab is new20!
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Which idiot ever came to the idea that editing MSOffice documents in a browser would be a good idea ?
No, I do NOT WANT TO EDIT MY DOCUMENTS in a Freaking browser, because as the name says, it is a BROWSER and not an EDITOR.
Sorry, I had to vent. Please give me my IT world back from 10 years ago - Everything has only been going downhill since then.
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What gave you the idea that you are in control? 
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Rage wrote: Which idiot ever came to the idea that editing MSOffice documents in a browser would be a good idea ?
Google? (lots of competition from Google Suite in browser) 
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Let me introduce you to the Chromebook...
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