iXBT heeft een review van de IDT Winchip 266 op z'n site gepleurd. Zo'n beetje alles is slecht aan deze CPU, zelfs z'n prijs:
Summing up, we'll get the following picture. To be objective, all tests showed that IDT Winchip 2 failed to surpass AMD K6-2, which is not much more expensive. In other words, if you aim at finding the best Socket-7 processor it is definitely AMD K6-2 or K6-3.
[break]...en overklokken moet je al helemaal niet proberen:[/break]
And now a few words about overclocking. When we found out that IDT Winchip 2 wasn't getting any warmer while working, a hope crept in that it should perform beautifully at higher frequencies. Ha! Tell us more! We suffered a great fiasco trying to apply the widely spread overclocking method to this stubborn CPU. Even the slightest frequency increase over the nominal one led to unstable performance. So, unfortunately, we have to grieve the overclockers: there is no way to make their hopes come true.