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Why is everything RISC-V some low power device, I want a workstation with PCIe 5.0 powered by RISC-V.
Cause it’s immature and low power devices are easier
What needs to be improved? The standards or manufacturing?
I’d guess they’d need to figure out whatever apple did with it’s arm chips.
efficient use of many-cores and probably some fancy caching arrangement.It’ll may also be a matter of financing to be able to afford (compete with intel, apple, amd, nvidia) to book the most advanced manufacturing for decent sized batches of more complex chips.
Once they have proven reliable core/chip designs , supporting more products and a growing market share, I imagine more financing doors will open.
I’d guess risc-v is mostly financed by industry consortia maybe involving some governments so it might not be about investor finance, but these funders will want to see progress towards their goals. If most of them want replacements for embedded low power arm chips, that’s what they’re going to prioritise over consumer / powerful standalone workstations.
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At a minimum they’ve got to design a wider issue. Current high-performance superscalar chips like the XuanTie 910 (what this laptop’s SoC are built around) are only triple-issue (3-wide superscalar), which gives a theoretical maximum of 3 ipc per core. (And even by RISC standards, RISC-V has pretty “small” instructions, so 3 ipc isn’t much compared to 3 ipc even on ARM. E.g., RISC-V does not have any comparison instructions, so comparisons need to be composed of at least a few more elementary instructions). As you widen the issue, that complicates the pipelining (and detecting pipeline hazards).
There’s also some speculation that people are going to have to move to macro-op fusion, instead of implementing the ISA directly. I don’t think anyone’s actually done that in production yet (the macro-op fusion paper everyone links to was just one research project at a university and I haven’t seen it done for real yet). If that happens, that’s going to complicate the core design quite a lot.
None of these things are insurmountable. They just take people and time.
I suspect manufacturing is probably a big obstacle, too, but I know quite a bit less about that side of things. I mean a lot of companies are already fabbing RISC-V using modern transistor technologies.
That makes sense.
I think that’s the whole point of all risc - it saves power over cisc but may take longer to compute some tasks.
That’d be why things like phones with limited batteries often prefer risc.
That’s true for small and simple microcontrollers, but larger and more complicated ones can theoretically implement macro operation fusion in hardware to get similar benefits as CISC architectures
It definitely could scale up. The question is who is willing to scale it up? It takes a lot less manpower, a lot less investment, and a lot less time to design a low-power core, which is why those have come to market first. Eventually someone’s going to make a beast of a RISC-V core, though.
Who’s willing to scale it up? China probably
Excl. Nation-states which have their own strategic reasons- NVidia, Google, Amazon, IBM, almost every single big cloud player are going to begin investing in RISC-V as it matures.
ARM charges a lot for its licensing and that’s only going up in the near future. x86 is simply too expensive to compete for unless you’re AMD or Intel.
At some point the Cloud CPU players are gonna jump on RISC for the cost savings, and the prospect of building their own platforms without licensing fees and lack of input on the direction of the ISA.
China is the main driver of growth in RISC-V currently. But we need to see how the trade wars will affect that. There was a recent news about RISC-V specifically in this regard.
We might also see more activity from Intel, Qualcomm and Nvidia.
milk-v is going to release a pretty powerful system, iirc i read it will be released in about 10 months, ventana also reportedly will release a server cpu in 2024.
That’s the sort of thing I am interested in seeing, thanks! :)
Given that sifive just effectively fired everyone, this might fall flat.
That’s yet another example of why you should not believe everything you read online, see this .
It takes time, as it all is under heavy development. Just since very recently there are risc v sbc available that can run linux - before it was pretty much microcontrollers only. Be patient :)
That’s promising at least :)
It’s probably what’s available without costing several kidneys.
Risc-v is still 50% slower than an unisoc SOC.
RISC-V is advancing pretty quickly. I imagine we’ll see desktop class CPUs within a decade.
There is the 64 core, 32-128GB DDR4 Milk-V Pioneer, but it uses PCIe 4.0
Me too. Hell, I’d settle for a multi-core RV64GC processor offered as a bare chip and socket since I’ve always wanted to give building a motherboard a try but, the dev systems available seem to have everything soldered :(
Does the trackpoint work like an old IBM thinkpad? If so this would be a really neat computer.
It’s called a nipple. And yes.
I’ve always called it the clit
My god, you’ve found it?!
More like it found me
Do you have one? The Thinkpad trackpoint was great but no other company that put a “nub/nipple” on their laptops was as good. I think IBM put a lot of effort into that device and whatever knockoffs Dell, HP etc were using were clumsy and uncomfortable in comparison.
Are netbooks making a comeback?
With RISC-V and ARM I hope so. In the past I feel like they were too bloated and it made them feel worse than a tablet or a laptop.
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Loved my netbook back in the day. put major hours into roblox on that bih
Does RISC-V have security benefits since it is open source? Is it easier to detect hardware backdoors if it is used instead of x86 or ARM?
RISC-V instruction set (ISA) is open source. But the actual implementation (microarchitecture) has no such obligations. And among the implementations that can run Linux, none (that I know) are open source designs.
With regards to hardware backdoors - no, closed source RISC-V implementations are not easier than x86 or ARM to audit for security.
I think the CPU chips themselves are closed source but the architecture is open under MIT so this means anyone can close them
Hmmm I wonder if it’s possible to hack together that tiny keyboard together with a Steam Deck…
Does it run GNU/Linux?
Yup they have an image based on Debian
I need one of these right now.
The Pad 4A is a bit more interesting to me. 1280x800 is really awful in 2023. But the pad 4A has a 10" 1920x1200 display which would be so much nicer in a small form factor laptop.
While I agree with you with the 16:10 display being nicer, in terms of size. 1280x800 isn’t bad once you take into consideration of screen size. Like the ppi for both displays are in the low 200s. A 1080p 15.6 in display has a lower ppi than both of those.
To me it’s less about the PPI and more the ability to fit things on the screen.
1280x800 is just small enough that that certain elements might not fit on the screen. Or if they do they just barely fit with no wiggle room. 1920x1200 is probably unreadable to even freaks like me (I run 150% scaling on a 16” 4K display) but it gives me the option to turn off/down scaling and actually fit things when needed.
That’s fair. I run 125% scaling on 15.6 1080p display so I know exactly what you feel.
I use a 1280x800 on my steamdeck and honestly its fine for 90% of stuff as long as it can scale properly. Am I the only person who ran a 720p monitor back when people were just getting into 4k?
I ran 1280x800 and 1366x768 for years and hated it. After the retina MBP came out and embarrassed everyone I vowed I’d never go back.
1080p is the minimum I’ll do at this point for a modern device.
Even 1080p is frustrating for many things now.
How well can it play Minecraft theoretically?
Geekbench score is not bad
This is the best summary I could come up with:
Known as the Lichee Console 4A, the laptop features a display size of just 7 inches, 16GB of memory, and an LM4A TH1520 processor.
Despite its small size, the Lichee Console 4A packs the features and functionality that you’d generally expect from a mainstream x86 laptop in this price range: LPDDR4X memory, 128GB of eMMC storage, and an optional external NGFF SSD.
Display-wise, the video resolution of the 7-inch display is 1280 x 800 featuring capacitive touch touchscreen support, plus a mini HDMI port for external monitor output.
There’s also a 2MP front camera that should suffice for basic web calling.
Additionally, there’s also a microSD slot reader, which can expand the device’s storage on top of what it already has.
Other miscellaneous specs include a battery capacity of 3000mAh, RedPoint (seemingly a copy of Lenovo’s TrackPoint), a 72-key keyboard, an aluminum outer shell, and a weight of 650 grams.
The original article contains 295 words, the summary contains 150 words. Saved 49%. I’m a bot and I’m open source!
Any estimation on the battery life?
