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Ryzen 5 2400G Radeon Vega Linux OpenGL/Vulkan Gaming Benchmarks
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Michael Nice review! It would have been nice to see some more demanding games like Deus Ex:MD to see what is playable and what is not.
Originally posted by dungeon View PostThese 24 CUs alone on mobile Vega (so even if you forget additional HBM size) is impossible to be in an Ryzen APU... but as you see 11 CUs like on this one could be packed.
On Playstation 4 PRO APU, much bigger gfx could be packed thanks to the small size of Cat CPU architecture so Jaguar CPUs size and also that GDDR5 memory is elsewhere
I think the reason why AMD stopped short of adding more CUs is that the memory bandwidth just isn't there to feed them.
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Originally posted by chithanh View PostMichael Nice review! It would have been nice to see some more demanding games like Deus Ex:MD to see what is playable and what is not.
I don't think that is true. Raven Ridge is 210 mm2 (on GloFo 14FF) while PS4 Pro APU is 325 mm2 (on TSMC 16FF). Each of the 40 CUs on PS4 Pro is supposedly 3.52 mm2 so AMD could have added many CUs to Raven Ridge without surpassing PS4 Pro APU in die size.
I think the reason why AMD stopped short of adding more CUs is that the memory bandwidth just isn't there to feed them.Michael Larabel
https://www.michaellarabel.com/
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Michael have you ever tried
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level I get quite a boost in almost all game, sometimes as high as 20-30%, in some games, especially war thunder. Some games it makes no difference. With my RX 480. Yes I understand this is not ideal to leave on. But the performance improvement can be quite high. I supposed there is still frequency scaling issues with the opensource drivers.Last edited by monte84; 14 February 2018, 10:48 AM.
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Originally posted by chithanh View Post[USER="1"]
I don't think that is true. Raven Ridge is 210 mm2 (on GloFo 14FF) while PS4 Pro APU is 325 mm2 (on TSMC 16FF). Each of the 40 CUs on PS4 Pro is supposedly 3.52 mm2 so AMD could have added many CUs to Raven Ridge without surpassing PS4 Pro APU in die size.
I think the reason why AMD stopped short of adding more CUs is that the memory bandwidth just isn't there to feed them.Last edited by dungeon; 14 February 2018, 11:24 AM.
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To stay with same thermals, they might pack more only when they go to lower nm process... initial Playstation 4 had about 250 max power rating (that one done on 28 nm), later one Playstation Slim was at 16 nm and max power rate there was 165W. So question is always what to do with that 30-40%ish, should we stay down or to pack or to fire up something more
Real max power used by console observed was also about 40% lower... so there is OC potentional there too
That is the story even with these PC APUs, these could go theretically plus/minus 40% up or down... but is usually released to mainstream as optimal right between these two extremes, otherwise it would be some fixed specialLast edited by dungeon; 14 February 2018, 12:25 PM.
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Originally posted by ElectricPrism View PostI prefer thin cases that are as minimal as possible.
I am working on a new case about the same height and width of a a Xbox One S except with a slightly longer depth with a full dGPU. 2.5".
I basically have 3 options -- I can go buy a PicoPSU and do a AMD Ryzen 2400g build say with a NFC S4 Mini -- do a Dr Zaber Sentry although the costs is $360 to send to the states and I'm not 100% sure the dimensions are as small as they could be since my case is about 7.1 Liters of volume and IIRC it is a bit more than that.
Just something to point out though, there are PicoPSUs (or devices like them) that go up to 250W, and aren't very expensive. You can build something powerful and tiny for very little money.
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Originally posted by grok View Post
You likely need a Displayport to HDMI 2.0 converter, which a nice motherboard can discreetly include on-board in theory - if none does then get an external one.
BUT there are a lot of "HDMI 4K" converters which of course are useless (yet another HDMI 1.4!)
So you can't go to any store ; web-search for a "real" one, fully explicit e.g. like this :
"Supports UHD Resolutions up to 3840x2160p at 60Hz with 24 bit color and 4:4:4 color sampling"
(That or a geforce GT1030 would work with your Kabini if it fits in the case, but the CPU will still be slow)
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Originally posted by dungeon View Postif you need to fit into AM4 and to have that 45/65W cTDP then adding more CUs is impossible
Then the cooling is not optimal yet. For Raven Ridge, AMD chose to use thermal paste instead of soldering the heatspreader to the die, as this is cheaper.
On the other hand, Raven Ridge massively benefits from DDR4-3200 memory compared to slower RAM, but doesn't benefit much past that. So for a hypothetical Vega20 APU, either we need DDR4-6000 which doesn't exist yet (only up to DDR4-4600 is currently available in the market), or some kind of fast cache needs to be placed on the package or mobo.
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