threads vs cores
threads vs cores
Hyperthreading boosts performance by allowing more threads to run simultaneously on a single core. For a CPU with all cores active and fully utilizing threads, the gain is significant but not always linear. A 6-core processor without hyperthreading may perform comparably to a quad-core chip with hyperthreading if the workload fits well, though it might lag in tasks that don’t use many threads. The improvement depends heavily on the program—some applications benefit greatly from multiple threads, while others see little difference.
It largely varies depending on the specific software, typically capping around 30% on Intel processors.
Considering games, if a quad-core struggles at 20 FPS and only reaches 30 with hyper-threading, the performance gap might widen. Without GPU limitations, the boost could be more noticeable, but real-world results depend on game demands and system configuration.
You're right, the numbers vary. It really comes down to whether the game is well-optimized for virtual threads. If it is, performance will be closer to the expected 33% at 20-30 FPS.
Most titles perform significantly below 30%, likely around 10% or lower when estimating, though hyperthreading can improve speed in many cases
SMT enables tasks to utilize various segments of the core simultaneously while the core transitions between them. For instance, if a single task relies heavily on floating-point operations, and only one thread is needed to fully use the floating-point unit, SMT won't provide any benefit. In fact, the overhead from switching tasks might actually reduce performance.
it makes sense, this explains why FX CPUs struggled. an 8-core model only featured 4 FPUs, acting more like a hardware hyper-threading version with poor IPC. i was upgrading from an i5-6500 at 3.2 GHz to an i7-6700k at 4.0 GHz (h110m couldn’t be overclocked). when playing games, i noticed i was CPU-limited in ultra settings—now it feels more GPU-limited (at 1440p it’s fine, but I can lower it if needed). the chip also runs 20% faster than the i5-6500. i was curious about how the Core i3-6100 performed with and without hyper-threading in games. many titles now use more threads than cores, so some games actually improved in frame rate by about double, depending on the title. for certain games that rely heavily on multiple cores but don’t focus only on 2 threads, this could boost performance noticeably. given upcoming consoles with many cores and thread support, this setup might become viable before the next generation pushes cpu limits, making a GPU upgrade even more appealing eventually.