It added that some AMD chipsets "do not conform with the documentation previously provided to Microsoft".
AMD said last week that differences in its chip designs from rival Intel Corp meant its products were at "zero risk" from the Meltdown flaw but that one variant of the Spectre bug could be resolved by software updates from vendors such as Microsoft. Many described the Meltdown and Spectre vulnerabilities as flaws in the basic design of modern processors, so the patches were expected to cause problems. This may require an update to your Lenovo Drivers.
On the other hand, Windows 7 and 8 PCs with the processors like Haswell will notice a significant decrease in system performance. 2015-era Windows 10 PCs with Haswell or older CPU might experience significant slowdowns.
Windows Server on any silicon, especially in any IO-intensive application, shows a more significant performance impact when you enable the mitigations to isolate untrusted code within a Windows Server instance.
In particular, those running older AMD Athlon-based systems have reported that they are unable to boot their PCs past the Windows startup logo after applying the patch.
"We're also committed to being as transparent and factual as possible to help our customers make the best possible decisions for their devices and the systems that run organizations around the world", the company said. "That's why we've chosen to provide more context and information today and why we released updates and remediations as quickly as we could on January 3". The post comes after representatives of the company declined to comment to GeekWire regarding the performance impact of the patches Monday, which are clearly affecting a swath of enterprise computing organizations.
"We plan to share more extensive information about performance impact when we can, but we also want to provide some initial information today".