![]() The GPU supports DirectX 11.1, OpenCL 1.2 and OpenGL 4.0. In comparison to the HD 4000, the graphics core has been modified extensively. The base clock can be automatically overclocked using Turbo Boost technology.ĭepending on the processor model, the base and turbo clock rates may differ greatly resulting in varying graphics performance between CPU models. Also, you might be able to get more consistent graphics performance by increasing the allowable thermal design power(TDP) in your BIOS(not available on all mother boards).Įdit: suggests that thermal throttling will kick in quickly when over clocking the HD 4000(that may explain your varying performance) and that increasing the TDP by increasing the current limit in Intel's Extreme Tuning Toolkit can resolve the problem.The Intel HD Graphics 4600 (GT2) is a processor graphics card included in some of the Haswell processors of 2013. So you might test this hypothesis by loading one or two of the CPU cores and checking how it impacts your score(assuming the benchmark is almost purely testing the iGPU). If this is indeed the case, then iGPU performance will depend on the current CPU load. Then the actual frequency is dynamically scaled between the min and max allowable values based on the CPU thermal and power budgets. I suspect that Intel Extreme Tuning Toolkit merely sets the maximum turbo boost frequency of the iGPU. ![]() ![]() Without overclock as you can see the scores are from 350-400. Quite recently I even have problems reaching in the 400+ score (most scores drops below, even while being overclocked), which was not at all a problem earlier. It's quite random whether I can reproduce the results above or not. ![]() What I am thinking I am battling here is either some adaptive voltage or auto scaling. I used FurMark for these records SCORE CLOCK VOLT The problem here is I am not unable to get reliable consistent results.Īt some point I was able to get a decent record, but I'm unsure whether it was "Adaptive" or "Static" voltage as the Intel Extreme Tuning Toolkit sometimes changes this setting. People managed to get 1600-1700MHz (OC) instead of 1250-1300MHz (default). I've tried to overclock my Intel HD Graphics 4600 in my desktop PC. ![]()
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