I think Sapphire should have used the exact same heat sink for the RX 5700 XT. My Sapphire VEGA 64 Nitro+ was able to stay cool enough under all desktop conditions that the fans never came on. Normally, when I startup a game it tells my graphics card to. I have also tried lowering my monitor to a 60Hz refresh, but the card exhibits the same fan on/off cycling. For some reason this game locks my graphics card to the base 300MHz when I use Sapphire Trixx. Please note that I am currently using the card's quiet BIOS and have an HP 1440p monitor with a fixed 75Hz refresh rate. This fan on/off cycling is really annoying - its actually more annoying than the constant low level fan noise of eh reference card - and makes Sapphire's the 'fan stop at idle' claim misleading. The time it takes between fan off to fan on is approx. As mentioned this is just using desktop applications such as Word/Outlook or browsing etc which, according to Sapphire's claim, should see no fans coming on. Then the cycle constantly repeats: the GPU temp steadily climbs back up to 59degC and the fans come back on and then off once it reaches 49degC again. Under desktop conditions the GPU temps steadily climbs up to 59degC and then the fans come on until the temp drops down to 49degC at which point the fans stop. The heat sink is simply not large enough to passively maintain a fixed low GPU temp under desktop conditions, which makes the fans come on periodically. I purchased this card to replace my reference 5700XT and, while it is a good card in many respects, it suffers from the same technical flaw as my original Sapphire RX480 Nitro+.

Sapphire trixx