Hi all,
My i7 920 is working well, but I'm curious about what you think of turning off hyper-threading. Under load, my cpu runs cooler without hyper-threading, and I doubt that MSFS X gets much use out of the extra 4 threads. Your thoughts?
Let's not confuse the two.
Hyperthreading is where one core can be two logical processors, which in some tasks like encoding has massive gains. For example, my old Pentium 4 was hyperthreading, it had two logical cores, and as such, could run two threads; but that doesn't mean it's a dual core, it's only logic.
Multithreading is a programme that uses multiple threads, which takes advantage of multi core processors, and usually hyperthreading processors.
RTM FSX was pretty much single threaded. It ran on one core, or one logical core. Why was it single threaded? Because RTM FSX sucked.
SP1 / SP2 FSX will scale the scenery engine correctly up to a practically unlimited amount of cores. Multithreaded. My Q6600 routinely reaches 100% utilization on all cores in FSX SP1 / SP2, particularly when I'm flying fast over dense autogen.
In FSX SP1 and SP2, you could use a]the JOB SCHEDULER tweak, which could make the sim treat any processor as a 1, 2, 3, 4, 5.... 128, core processor. On my old Pentium 4, with SP1 and SP2, using a tweak to make FSX multithreaded to supposedly, 'take advantage' of Hyperthreading, had no gain. It created microstutters which just as not worth it. Enabling it caused, in my case, microstutters.
FSX is designed for multiple cores, not multiple logical cores. If you try and run it that way there will probably be no gain, and perhaps many problems.
So. You want Hyperthreading DISABLED. And NO jobscheduler tweaks in fsx.cfg.
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