3 ms·
You'll definitely need it for the 3970X. I run one on a Noctua NH-U14 (running in push-pull with one of their 2000RPM industrial fans and the included 1500RPM f
by greggyb 6y ago
You'll definitely need it for the 3970X. I run one on a Noctua NH-U14 (running in push-pull with one of their 2000RPM industrial fans and the included 1500RPM fan), and it can get toasty under sustained load. The Noctua typically tests similar to a 240-280 AIO in terms of heat dissipation capacity. It's a longer term goal to do a custom loop with 420mm+ of radiator, but I have other projects before that.
I can maintain turbo under load, but it decays from a full 4.5GHz to 3.9GHz-4.1GHz under a sustained prime95 load. My primary workloads are more bursty, so this is not a big problem for me. I just don't like leaving performance on the table. Also, I cannot turn on PBO on air. It runs up to 95C and then bounces around from 90C-95C, and I'm just not comfortable bumping up against the thermal limit like that long term.