The results for the fanless Surface Pro with Core i5 are impressive. For one, Microsoft did not reduce or halve the thermal design power (TDP) from 15W to 7.5W, which is something the company could have done to keep the Surface Pro cool. In fact, during peak turbo bursts the Core i5 regularly hit and stayed at the max 3.5 GHz, and it would peak at 18W TDP. https://cdn.opieoils.co.uk/images/variants/icon/silkolene/silkolene-pro-cool-antifreeze-coolant-ready-to-use-1-litre-1.jpg

https://cdn.opieoils.co.uk/images/variants/medium/silkolene/silkolene-pro-cool-antifreeze-coolant-ready-to-use-1-litre-1.jpg We haven't had all of these iPhone 13 Pro cases in our test labs, but we have owned similar cases from each of these brands across multiple generations of phone models. We only recommend cases we trust, from brands we know well. https://cdn.opieoils.co.uk/images/variants/icon/silkolene/silkolene-pro-cool-antifreeze-coolant-ready-to-use-1-litre-2.jpg

They're The Same!?

Fans circulate the air, removing warm air from the cage interior, and can help to protect dog from overheating Remember kids, the only difference between screwing around and science is writing it down. - Adam Savage https://cdn.opieoils.co.uk/images/variants/medium/silkolene/silkolene-pro-cool-antifreeze-coolant-ready-to-use-1-litre-3.jpg

When running the fan at full speed with LED light turn on and set at full brightness we recommend running it from USB-C. There is some power limit throttling, but as nearly every laptop (and every Surface) uses PL1 to keep the PC from getting too hot.

Cool Runnings

PRO COOL is compatible with all alloys, plastics, elastomers and gasket materials used in modern engine cooling systems and is “Ready-to-use” no dilution required Overall, performance with the Surface Pro Core i5 is outstanding and significantly better than the same Surface Pro 4 configuration even without a fan. Those concerned that the fanless Surface Pro is underperforming to stay below thermal limits can be assured that not only is that not the case, but in fact the Pro is faster than the Surface Laptop with a Core i5 configuration. Surface Pro Core i5 stress test and throttling https://cdn.opieoils.co.uk/images/variants/large/silkolene/silkolene-pro-cool-antifreeze-coolant-ready-to-use-1-litre-2.jpg Like all laptops and mobile PCs, there is some degree of power throttling (which is different from CPU thermal throttling) to keep the magnesium chassis of the Surface from getting too hot. Nonetheless, for a passively cooled system, Microsoft's Surface Pro with Core i5 does quite well.