Bumpin'. Had some black screen issues, I googled it and I read that underclocking VRAM* should work. Also I have a high-quality but low-wattage PSU**. I guess that improving memory cooling and upgrading the PSU would help..?
* Memory is without any cooling since I have an asetek-based AIO cooler and memory chips are just there without any cooling
** XFX TS 430, Seasonic as OEM and with Japanese caps
Card is XFX R9 290 Black Edition aka factory overclocked reference card. I bought this without cooler since I had the AIO cooler already. MX-4 paste between GPU and the block, VRM has heatsinks attached with thermal glue and fan blowin' to them. The AIO cooler of the GPU is Arctic Accelero Hybrid-III 120 with a Gentle Typhoon 120mm 1450rpm attached to the radiator.
English is not my native language so I'm sorry for any possible errors. I guess everything neccessary is still clear.