As the ‘TR4’ part of the name suggests, the be quiet! Dark Rock Pro TR4 has been designed to work with Threadripper CPUs, something that wasn’t supported with the Dark Rock Pro 4. From the outset, the Dark Rock Pro TR4 shares a very similar aesthetic to the Dark Rock Pro 4 which we reviewed previously, and also shares a very similar price at £79.99. Looking at both models side by side, it’s pretty easy to confuse them, but the biggest giveaway that one is TR4 socket-specific Is, of course, the massive CPU block.