Please write what memory chips you used. And please show me a photo with the new chips. Thank you in advance!
Now he has updated the pictures, you can take a look.
I can’t see all signs clearly. Can I take a photo in normal quality? Or finally write what kind of chips were used, is it really that difficult?
Perfect! Thanks a lot!
H5ANBG6NAM RXNC BGA96 4G
Has anyone looked into overclocking the SDRAM on R4 ? It seems locked at 3200 from my brief check. Worth digging down the rabbit hole?
Edit: I think it’s near impossible to tweak the timings. Happy to be proved wrong.
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As an aside, stumbled on this while doing research.
8GB Raspberry Pi 5 has slightly less measured bandwidth than 4GB RPi 5 https://forums.raspberrypi.com/viewtopic.php?t=369585&sid=41232f7554f75cff05c377638a393a1f&start=25
Is it really 4GB?
As per specification I see 32G?
I see in such a case this chip could be also used: K4ABG165WA-MCWE
Pretty sure those are 32 Gigabit chips, so you have to divide by eight which gives you the 4GB.
Yes you may can do this in this way … but it is also possible to be a bit more “careful”:
→ backside heating with hot plate (120°C)
→ covering other parts on top side with aluminium foil
→ slow cooling after soldering
→ right choice of flux and soldering paste
But in general → this is the way
Might be interesting to poll if there are enough people willing to pay for a 8GB variant to make possible to set up a production line instead of trying their luck with flux&heat gun