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RISC-V SBC VisionFive 2 Officially Shipped

starfivetech.com

21–30 of 105 posts

Re: RISC-V SBC VisionFive 2 Officially Shipped

#21
post #14

Any performance comparisons with Raspberry Pi boards? How does this RISC-V CPU stack up against them?

A board that you can buy will perform better than one that is unavailable.

For what it's worth, I managed to get an RPi4 at retail price within a few days by setting the appropriate filters on https://rpilocator.com and keeping a watch on it with an Android app called "Web Alert". I've used the same trick to buy out-of-stock cameras and laptops too, works a treat.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#22
post #5

Earlier quoted context omitted.

Looks pretty good opensource-wise, right? Some linux fork with ton of patches but hopefully most of that will get upstreamed, and except that I found no weird blobs or proprietary crap.

I haven't looked at the v2 but they seemed to be doing an alright job at getting things upstreamed with the v1. the only thing i remember seeing that wasn't very good in that regard was the neural net stuff that they had and that seemed more from just issues getting the hardware working than any nda or lack of desire to do it. I'd hope that the v2 is similarly worked through even if it needs some non-upstream patches…

It seems like many SoCs (also in ARM space) advertise '2 TOPS' or however many TOPS neural processors integrated in the silicon... but the actual number of SoCs where those coprocessors can be used in Linux seems to be very low.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#23
post #7

Explaining Computers "StarFive VisionFive 2 RISC-V SBC review, including a demo of an engineering release of Debian, and of Python GPIO control" https://www.youtube.com/watch?v=ykKnc86UtXg

It's sad how 'being able to actually use GPIO pins in software' is an achievement for an SBC. But I do applaud StarFive for actually seeming to throw some support behind their boards.

We have been spoiled with Raspberry Pi the past few years prior to the shortages. I wish another vendor could get close to Pi's position to give more competition in terms of support and documentation.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#24
post #18

Any performance comparisons with Raspberry Pi boards? How does this RISC-V CPU stack up against them?

CPU slower than 4 as said, but even Jetson Nano is slower that the mad performance per watt of the 4. BUT the GPU is apparently better which would make this THE SBC. I will test my 3D MMO engine and give exactly what is what once I receive mine, should be a couple of days. The Raspberry GPU has a serious cache problem, it can't render a triangle at 60FPS in 1080p!!! But 100 non-instanced animated characters (each wit…

>the mad performance per watt of the 4.

More like bad than mad.

This SoC is far more efficient, using just 4.4w on full load and achieving some 80% of rpi4's cpu performance at a much lower power, with no need for a heatsink.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#25
post #24
post #18

Earlier quoted context omitted.

CPU slower than 4 as said, but even Jetson Nano is slower that the mad performance per watt of the 4. BUT the GPU is apparently better which would make this THE SBC. I will test my 3D MMO engine and give exactly what is what once I receive mine, should be a couple of days. The Raspberry GPU has a serious cache problem, it can't render a triangle at 60FPS in 1080p!!! But 100 non-instanced animated characters (each wit…

>the mad performance per watt of the 4. More like bad than mad. This SoC is far more efficient, using just 4.4w on full load and achieving some 80% of rpi4's cpu performance at a much lower power, with no need for a heatsink.

We'll see, if you need a heatsink for this here is one I bought which should fit: http://www.enzotech.com/cnb_s1l.htm

Not going to debate the gflops/w yet, but Raspberry 4 cores are also around 1W each and they kick ass compared to even M1 (much worse OFC, but per $/openess they still win imo)

Re: RISC-V SBC VisionFive 2 Officially Shipped

#26
post #5

Earlier quoted context omitted.

Looks pretty good opensource-wise, right? Some linux fork with ton of patches but hopefully most of that will get upstreamed, and except that I found no weird blobs or proprietary crap.

Still no sign of an actual Technical Reference Manual or any other detailed documentation on the SoC (registers, peripherals, etc). A big pile of Linux patches, while better than nothing, is a poor substitute for actual documentation. SiFive does provide docs for the core complex (processors, cache, irq controller, etc), but that doesn't cover any SoC-specific peripherals.

Agreed. But I feel like that is still a step ahead of RPi where you get random firmware blobs for the GPU without which it won't even boot.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#27
post #25
post #24

Earlier quoted context omitted.

>the mad performance per watt of the 4. More like bad than mad. This SoC is far more efficient, using just 4.4w on full load and achieving some 80% of rpi4's cpu performance at a much lower power, with no need for a heatsink.

We'll see, if you need a heatsink for this here is one I bought which should fit: http://www.enzotech.com/cnb_s1l.htm Not going to debate the gflops/w yet, but Raspberry 4 cores are also around 1W each and they kick ass compared to even M1 (much worse OFC, but per $/openess they still win imo)

If the SoC in rpi4 was any good, it wouldn't need a huge heatsink to not throttle.

The reality is that it draws around 10w more often than not.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#29
post #27
post #25

Earlier quoted context omitted.

We'll see, if you need a heatsink for this here is one I bought which should fit: http://www.enzotech.com/cnb_s1l.htm Not going to debate the gflops/w yet, but Raspberry 4 cores are also around 1W each and they kick ass compared to even M1 (much worse OFC, but per $/openess they still win imo)

If the SoC in rpi4 was any good, it wouldn't need a huge heatsink to not throttle. The reality is that it draws around 10w more often than not.

I know what 10W feels like because the Jetson Nano draws that, and Raspberry 4 is 7W with GPU+4 cores saturated.

You will need a heatsink on the Visionfive if the GPU does what I hope it does.

The Raspberry 4 GPU is only 1W vs. 5W on the Jetson Nano!

I'm hoping for a 2-3W GPU on the Visionfive and then you'll need a heatsink for MMO gameplay no question about it.

Longevity is now crucial as hardware peaks, heat kills electronics slowly but oh so surely!

Edit: Do you have a URL for those 3.xW and 4.4W claims... Then I think we wont see 100+ but cache can still be larger so you can have 100 at 1080p and that is enough for mainsteam adoption and replacing all other computers (Switch, PS4, XBOX, phones and pads etc.)!

The future belong to those that compile!

Re: RISC-V SBC VisionFive 2 Officially Shipped

#30
post #29
post #27

Earlier quoted context omitted.

If the SoC in rpi4 was any good, it wouldn't need a huge heatsink to not throttle. The reality is that it draws around 10w more often than not.

I know what 10W feels like because the Jetson Nano draws that, and Raspberry 4 is 7W with GPU+4 cores saturated. You will need a heatsink on the Visionfive if the GPU does what I hope it does. The Raspberry 4 GPU is only 1W vs. 5W on the Jetson Nano! I'm hoping for a 2-3W GPU on the Visionfive and then you'll need a heatsink for MMO gameplay no question about it. Longevity is now crucial as hardware peaks, heat kills…

4.4 W is the figure given for the SoC on full load.

They also give a lower figure that's 3.x W for full load with the GPU off.

It won't need a heatsink, because with its power draw it won't get above 70C even on full load, while the chip is built for industrial temperature range in operation.

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