I recently purchased a very slightly used (at least its physically flawless) ASUS Dual Fan RX 580 OC 4GB card from Ebay. Upon popping it in my PC found that its BIOS had been modded to GPU/Mem 1150MHz/2000MHz for mining-- this was not advertised in the Ebay listing-- the card was underperforming in gaming so I went through the steps and obtained a default BIOS from TechPowerup.com, flashed the GPU, all went well, and performance did increase. However, I have 2 issues/questions-- in Firestrike 1.1 and Timespy, before I run a benchmark, the opening menu where you select your bench recognizes the GPU as a RX 580, but after I run a benchmark, I get a validation warning on both FS and TS saying my GPU and my driver version are not recognized. Im using Relive 17.9.2 I believe. I tried using DDU to clean the drivers and have re-installed different versions, but I still get the same validation warning-- is this just because the ASUS Dual 4GB may have not been submitted to the 3dmark database yet, or something more sinister? Second question is performance-- Im running a Ryzen email@example.com GHz, 8G 2666MHz RAM, SSD, and default clocks on the RX 580. I dont have the exact scores handy now, but Im basically getting the scores below Firestrike: Graphics (dont remember exactly, will update later today) Overall - 11400 While I dont think these scores are horrible, they are falling about 10% behind what Im reading on average for a 580. That said, almost all 580 reviews I have found are using an 8GB version, which also has 2000MHz mem clock vs. 1750MHz mem clock of all 4GB versions. I havent yet tried to OC the memory to 2000 to see how it affects the run. Does anyone know the average performance delta on FS and TS with the different mem sizes and speeds?