RE: Upgrading my XPS 435mt CPU
To bring this thread up-to-date, the fastest i7-9xx processors that are upgrade options for the Dell Studio XPS 435MT (Mini Tower) are (all quad core):
- i7-975, 3.33 GHz
- i7-965, 3.2 GHz
- i7-960, 3.2 GHz
Matching Xeon processors also work and are usually less expensive:
- W3580, 3.33 GHz
- W3570, 3.2 GHz
- W3565 3.2 GHz
Note that neither 6 core i7-9xx processors nor 6 core Xeons work in the 435MT. Hex core Gulftown i7-990X, i7-980X, i7-980 and i7-970 processors will not work since 435MT BIOS wasn't updated to support them.
See this discussion thread for more details.