![]() Sandy Bridge: Probably due to its much higher clock speed the older Westmere-EP CPU performs better in most tests than the newer Sandy Bridge-EP CPU (the fastest Sandy Bridge-EP, the E5-2690, might be on par or even better, though). Single-thread performance on VDI: As the SunSpider and Super Pi tests show, single-thread performance on a VDI machine is not great. Given that desktop PC CPUs are faster than laptop CPUs it is safe to assume that a VDI machine does not stand a chance against a PC. new PC: Even a laptop CPU outperforms the Xeon in nearly all tests. old PC: A VDI machine running on Intel’s newest server CPU is not that much faster than a physical PC with a 5.5 year old CPU. These conclusions are, of course, only applicable to similar scenarios, so things may be different for you: We can learn several interesting things from these tests. The virtualization hosts were running VMware ESXi 5.0. At the default setting (“balanced”) CPU performance is noticeably worse. The virtualization hosts’ power profile was set to maximum performance. The system with the Xeon E5-2670 had an oversubscription ratio of 4:1, the system with the Xeon X5690 had 6:1. The virtualization hosts running the VDI machines were oversubscribed in terms of virtual to physical CPU allocation. HyperThreading was enabled where available. Single-thread performance is still extremely important today, which is why Intel enabled their CPUs to optionally run only one thread at a high speed instead of multiple threads at normal speed (“Turbo Boost”).Īll measurements were run twice. Some tools are multi-threaded and take advantage of more than one CPU core while others do not. SunSpider 1.0 in IE8: Measures JavaScript performance.CineBench 11.5 CPU: 3D rendering tool turned into a benchmark. ![]()
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