I ran the same benchmarks that I ran on the OS X side. In Windows 10 on the new Retina iMac 5k, it actually scores higher. Interesting.
Operating System: Windows 10 Technical Preview
Computer 2014 iMac Retina 5k
i7-4790K CPU processor
AMD Radeon R9 m295x 4096MB Video Card
Ultra Street Fighter IV Gaming on iMac 5k and Benchmark:
If you have any questions or would like me to run more tests in Windows 10 on the new Retina iMac, then…