6 ms·

I was very surprised by some of the thermal characteristics of my i7-13700k. My previous build was an i7-4790k, so it's been a minute. I had to undervolt this t

I was very surprised by some of the thermal characteristics of my i7-13700k. My previous build was an i7-4790k, so it's been a minute. I had to undervolt this thing and cap it's max TDP (disable boost modes -- it has boost modes which are very thirsty) to get it to complete benchmarks while staying under 90* C (with a top of the line case, very good fans / circulation, and a large AIO). It's great now but undertuning the thing is a total departure from what I recall from '00s and '10s gaming machines.

csdvrx 4y ago
I wish I could undervolt my laptop. As noted by the author: > ===== Notice that undervolt is typically locked from 10th gen onwards! ===== I can't even modify the BIOS due to BootGuard and the keys burned into the CPU. Hopefully there will be a way to leak/extract the keys someday, as this create real e-waste for fake security.
- mjg59 4y ago
  Boot Guard is based on RSA signatures, so the private key material isn't present on the device
  - csdvrx 4y ago
    I was thinking more about the recent Alder Lake Lenovo leaks :) Right now I'm fighting with nohz_full and rcu_nocbs to limit the wakes per second, with irqaffinity on top to isolate to one core what must happen so that the others can stay in PC8 when I'm not compiling. I'm down to about 350 on a 12th gen Alder Lake with E and P cores running Wayland with a few terminals, Thunderbird and Edge) but I wish I had the ability to also undervolt to go beyond 4W
NavinF 4y ago
> i7-13700k 253 W max turbo power is not that crazy by today's standards. > top of the line case, very good fans / circulation, and a large AIO I think you'll find that what people consider good cooling for a desktop has changed somewhat in the last decade. My first GPU didn't even have a fan, but today it's fairly common for enthusiast builds to have an external radiator. I dunno what you consider large, but most AIOs only have slightly more surface area than large air coolers so they really aren't worth it for sustained workloads like gaming or ML training. Custom loops have always been the go-to solution.
charrondev 4y ago
What AIO did you use? I just built a new PC with an i9-13900k and an MSI MEG Coreliquid 360 AIO cooler. It benchmarks really well and I’ve never seen it over 50*C, the fans are really quiet, and I haven’t changed any of the configuration for it. On the flip side I’ve got a i9-12900k in a different PC with air cooling and a more compact case and between that and the graphics card, the smaller machine runs super hot and noisy.
- scruple 4y ago
  It's a CoolerMaster 360 AIO in a midtower Corsair case. I was using Cinebench for benchmarking. I haven't seen any performance hits, in benchmarks or typical usage, so I'm comfortable with all of it. I decided to undervolt the thing based on about a dozen or so Reddit threads worth of conversation about the thermal properties of these 13th generation Intel chips.

csdvrx 4y ago

I wish I could undervolt my laptop. As noted by the author: > ===== Notice that undervolt is typically locked from 10th gen onwards! ===== I can't even modify the BIOS due to BootGuard and the keys burned into the CPU. Hopefully there will be a way to leak/extract the keys someday, as this create real e-waste for fake security.

mjg59 4y ago
Boot Guard is based on RSA signatures, so the private key material isn't present on the device
- csdvrx 4y ago
  I was thinking more about the recent Alder Lake Lenovo leaks :) Right now I'm fighting with nohz_full and rcu_nocbs to limit the wakes per second, with irqaffinity on top to isolate to one core what must happen so that the others can stay in PC8 when I'm not compiling. I'm down to about 350 on a 12th gen Alder Lake with E and P cores running Wayland with a few terminals, Thunderbird and Edge) but I wish I had the ability to also undervolt to go beyond 4W

NavinF 4y ago

> i7-13700k 253 W max turbo power is not that crazy by today's standards. > top of the line case, very good fans / circulation, and a large AIO I think you'll find that what people consider good cooling for a desktop has changed somewhat in the last decade. My first GPU didn't even have a fan, but today it's fairly common for enthusiast builds to have an external radiator. I dunno what you consider large, but most AIOs only have slightly more surface area than large air coolers so they really aren't worth it for sustained workloads like gaming or ML training. Custom loops have always been the go-to solution.

charrondev 4y ago

What AIO did you use? I just built a new PC with an i9-13900k and an MSI MEG Coreliquid 360 AIO cooler. It benchmarks really well and I’ve never seen it over 50*C, the fans are really quiet, and I haven’t changed any of the configuration for it. On the flip side I’ve got a i9-12900k in a different PC with air cooling and a more compact case and between that and the graphics card, the smaller machine runs super hot and noisy.

scruple 4y ago
It's a CoolerMaster 360 AIO in a midtower Corsair case. I was using Cinebench for benchmarking. I haven't seen any performance hits, in benchmarks or typical usage, so I'm comfortable with all of it. I decided to undervolt the thing based on about a dozen or so Reddit threads worth of conversation about the thermal properties of these 13th generation Intel chips.