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I just did a test



I did a benchmark with gta4 and I disabled 2 of the cores on my quad core i5 750. It still came out with 60fps. So does having a duel core really make much difference than having a quad core, is the graphics card the most important factor? The processor is set to 3.2GHz and the graphics card is a GTX560ti.



StatisticsAverage FPS: 59.48Duration: 37.02 secCPU Usage: 49%System memory usage: 44%Video memory usage: 52%Graphics SettingsVideo Mode: 1920 x 1080 (60 Hz)Texture Quality: HighShadow Quality: HighReflection Resolution: Very HighWater Quality: Very HighTexture Filter Quality: Anisotropic x4Night Shadows: HighView Distance: 25Detail Distance: 31HardwareMicrosoft Windows 7 Home Premium Service Pack 1Video Adapter: NVIDIA GeForce GTX 560 Ti  Video Driver version: 301.24Audio Adapter: Speakers (ASUS Xonar DG Audio Device)Intel® Core i5 CPU         750  @ 2.67GHz


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sometimes i think widnows doesn't really disable stuff when they say its disabled. i installed microsoft security essentials (since the windows 8 was validated, i figure why not try it? biggrin.gif), even when i disabled it, it crashed gta IV EVERYTIME i played it. after the third time, i uninstalled it. problem gone. i5 750? it has hyperthreading?


maybe gta IV recognizes it differently than older intel CPUs, i don't know.

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The benchmark is practically broken, so that's another possible cause.

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Just curious as to exactly how you managed to disabled the cores? Did you do it inside the bios or force the OS to run only on 2 out of the 4 cores? Post a pic of CPU-Z so that we can verify if the cores are actually disabled or not.

For the in game benchmark, it does not reflect real world game play.

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I went to task manager, processes, right click gta4.exe, set affinity then untick 2 of the cores. I could see on the performance graph that only 2 of the cores were in operation, the other 2 were at 0% usage. As you can see on the benchmark that the CPU = 49% so it is using 2 cores at almost 100% and the other 2 at 0%. I tested a few minutes in a 30 player multiplayer and it seemed pretty smooth. I'm pretty sure it doesn't have hyper threading, that is the i7.


I will post a screen later.

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