| >using refan DDR memory...Kllisre, ZIFEI, TANBASSH, Rasalas etc. use the refan chips "refan" I think they might be talking about factory reject recycled/repaired ram. Chuck Peddle (6502) had some patents for this and ran operations in Asia for a company doing this on a large scale "Memory module assembly using partially defective chips" https://patents.justia.com/patent/6119049 https://patents.justia.com/patent/RE39016 Oral History of Charles Ingerham “Chuck” Peddle https://archive.computerhistory.org/resources/access/text/20... >Peddle: I had a patent on how to use partial DRAM. And we turned that patent into a very large business making DRAM in Sri Lanka, in India, using reject die from Micron. >Peddle: We buy the good ones in the front, probably about half price because they sell them about half
price. Although we buy them less than half price because a lot of them don't make the 50% numbers that
other people are looking for. And then the ones in the back, we basically almost get free because we can
use them up. That business died when Micron stopped selling partials(reject dies) to anyone but their subsidiary SpecTech.
"SpecTek began at Micron in 1988 as a component-recovery group. In the two decades since its inception, the company has grown from an internal group to a manufacturing division; that experience has produced a product portfolio and reputation that makes SpecTek a leader in application-specific memory solutions.". Every time you buy Crucial you might be buying inferior SpecTek factory remanufactured/patched from defects product. > We lost 4,500 jobs in a weekend when they stop selling partials. Nowadays a TON of Chinese brands are into partials. Cheap flash memory was first - why throw away 90% defective flash die when you can make small SD card/USB drive out of it. I have no doubt they moved to ram now. For the rest, in current chip shortage $280 wouldnt even cover 4 FPGAs pictured on that website :) |