Update pages/instances/faq.mdx

Author: bene2k1

pages/instances/faq.mdx

@@ -55,7 +55,7 @@ You can change the storage type and flexible IP after the Instance creation, whi
 Instances are billed according to how long they remain powered on:
 
 - **CPU Instances**: Charged per hour while powered on or in standby.
-- **GPU Instances**: Charged per minute while powered on or in standby.
+- **GPU Instances**: Charged per minute while powered on or in standby (except for RENDER-S GPU Instances which are billed per hour).
 
 Note, that while compute resources follow this usage-based model, other resources - such as IP addresses and storage — are billed for the entire duration they remain allocated to your account, even if the Instance is powered off.
 For more information about Instance billing, refer to the [Instances pricing page](https://www.scaleway.com/en/pricing/virtual-instances/)