Hello, i have my trusty old i5 2500k and some kingston low profile 1333Mhz ram. I managed to overclock cpu to 4.3Ghz 1.3V and ram to 1600Mhz (without bumping voltage i might add, i am really impressed with that, didnt want to bump voltage since ram has no heatsink). I really like round numbers and 4.3Ghz bothers me, i want 4.5Ghz. I tried 4.5Ghz at 1.3V, system didnt boot. At 4.4Ghz it crashed under prime95. At 4.3Ghz it is stable in prime95 and memtest86+. After 5 minutes in prime95 it reaches 70C on hottest core. As you see i am pushing limits since in the summer it will be about 8C hotter. This is an old chip so i am not afraid to run it at 75C at full load, but everything over i would rather not do. I am using Xigmatek xigmatek hdt 1283. So my question is, is there any other voltage besides CPU voltage, that could help me with my overclock. As u can see i cannot push CPU voltage any more.