Wednesday, February 14th 2024
Intel Core i9-14900KS Draws as much as 409W at Stock Speeds with Power Limits Unlocked
Intel's upcoming limited edition desktop processor for overclockers and enthusiasts, the Core i9-14900KS, comes with a gargantuan 409 W maximum package power draw at stock speeds with its PL2 power limit unlocked, reports HKEPC, based on an OCCT database result. This was measured under OCCT stress, with all CPU cores saturated, and the PL2 (maximum turbo power) limited set to unlimited/4096 W in the BIOS. The chip allows 56 seconds of maximum turbo power at a stretch, which was measured at 409 W.
The i9-14900KS is a speed-bump over its predecessor, the i9-13900KS. It comes with a maximum P-core boost frequency of 6.20 GHz, which is 200 MHz higher; and a maximum E-core boost frequency of 4.50 GHz, which is a 100 MHz increase over both the i9-13900KS and the mass market i9-14900K. The i9-14900KS comes with a base power value of 150 W, which is the guaranteed minimum amount of power the processor can draw under load (the idle power is much lower). There's no word on when Intel plans to make the i9-14900KS available, it was earlier expected to go on sale in January, along the sidelines of CES.
Source:
HKEPC
The i9-14900KS is a speed-bump over its predecessor, the i9-13900KS. It comes with a maximum P-core boost frequency of 6.20 GHz, which is 200 MHz higher; and a maximum E-core boost frequency of 4.50 GHz, which is a 100 MHz increase over both the i9-13900KS and the mass market i9-14900K. The i9-14900KS comes with a base power value of 150 W, which is the guaranteed minimum amount of power the processor can draw under load (the idle power is much lower). There's no word on when Intel plans to make the i9-14900KS available, it was earlier expected to go on sale in January, along the sidelines of CES.
228 Comments on Intel Core i9-14900KS Draws as much as 409W at Stock Speeds with Power Limits Unlocked
Intel engineers are not dumb. They know the usage patterns much better than you and I.
Gamers - one of the few remaining demographics who care about single-theaded or low-threaded performance are buying X3D chips that are just better despite far lower power draw.
Everyone else who needs more performance will just add cores; 7950X, ThreadRipper (Pro), EPYC, Xeon.
Pushing so far beyond the point of diminishing returns of efficiency is stupid. It has always been stupid, and it will remain increasingly stupid as the environmental and monetary cost of energy usage increase exponentially.
Just about the only possible answer would be hardcore AVX-512 users and just about every situation I can imagine where heavy AVX-512 is needed, you also need gobs of bandwidth. Consumer i9's are godawful for that which is why they're all using Xeons for AVX-512 workloads.
Am I missing something, is there a productivity workload that doesn't work on Zen4 and needs AVX-512, but not with significant memory quantities or bandwidth? AMD are ahead of intel in just about everything except AVX-512 which is already pretty niche outside of the datacenter and ECC-equipped HEDT pro-tier workstations running Xeons already.
Turn off SMT on the 7800X3D, and games that aren't threadbound get 5-10% boost.
So if you can limit the wait times, make a more efficient and responsive P core, while offloading the HT style work that would happen in-between high priority instructions to e cores, you're actually making the overall process much faster. -- less theorhetically efficient at full thread load from the point of view of a single P core, but more specialized and more responsive overall.
If eliminating HT hardware also allows you to fit more P cores on the die with a space and a TDP reduction then that win is compounded further.
It should be something the OS scheduler can turn off and on at will, rather than this dumb all or nothing approach we have now where we have to choose to cut our thread count in half just to get some latency gains. We only need those latency gains on ONE thread :)