來自Mary Jo Foley's Blog的Q&A顯示,實際上Windows Vista SP1并不如我們想象的那么光彩奪目,事實上它并不會顯著地改變用戶界面和回歸程序兼容性。如果通過Windows Update安裝(已裝好之前的更新程序)，那么它只會有大約45MB；大家也不用擔心SP1太小，因為同樣的方法下，當年XP的SP2也只需下載80到100MB。

但是在SP1中還是有一些新東西的,例如支持EFI啟動,SD高級DMA支持等.

內含Q&A原文,大意已經在上一段闡明.

Mary Jo Foley got a chance to see a note sent to certain testers of Vista SP1 earlIEr this month and quite a few interesting facts have turned up in it:

Q: How big is SP1?

A: “Windows Vista SP1 is approximately 45 MB when delivered over Windows Update and is designed to not significantly change the UI or regress application compatibility.”

Q: What are some examples of “support for emerging technologies and standards?”

A: “With SP1, Windows Vista can boot via EFI (Extensible Firmware Interface) on an x64 Machine. SP1 supports ExFAT, a new file format that will be used in Flash memory storage and consumer devices Support for SD Advanced DMA Support to improve transfer performance and decrease CPU utilization is part of SP1