E6, a De Beers Group company, is developing a copper-diamond composite material to serve as a more effective heatsink. E6, a De Beers Group company, is developing a copper-diamond composite material to serve as a more effective heatsink. Post navigation Logitech repair program offers OEM replacement parts for 20+ devices — available in 62 countries US retailer lists RX 9070 preorders starting March 23 — AMD ad suggests RDNA 4 was set for January