Benchmarks: Temperature
Who doesn't love a bit of SpeedStep? As is the case with any modern-day CPU, the i5-4670K dynamically reduces frequency when idle, creating very little heat.
But that 4.2GHz maximum speed continues to raise an eyebrow. The frequency bump is best described as modest, yet, even with a Corsair Hydro Series liquid cooler, PC Specialist's chip runs at over 70ºC under extreme load.
The Core i5-4670K carries a TDP of 84W (7W higher than previous-gen counterparts) and remember, this isn't a measure of how much power the processor will use, but rather a sign of how much cooling the chip will need in order to dissipate heat. We suspect the integration of an on-die VRM has made it more difficult to keep Haswell temperatures in check.
Going by what we've seen of early fourth-gen samples, we reckon most system integrators will initially err on the side of caution and ship with lower overclocks when compared to Ivy Bridge.
PC Specialist's chosen PowerColor graphics card, meanwhile, makes use of dual-fan cooling and has no problem in keeping the Radeon HD 7950 Boost core running suitably cool.
