- May 16, 2020
- Dell OptiPlex 9020 MT
- E3-1240 v3
- Sapphire Pulse RX 580 4G
Look forward to seeing the results. I've got a 4790 in my MT and really like it. The prices for used ones have gone way up on Ebay and other sites. Budget gamers buy them up to install in their gaming desktops. Still a good performer with modern games.
The comparable Xeons cost from 40-50 USD less. They will perform slightly slower with single core tasks but should match up well when all 4 cores/8 threads are in use. I'm certain that any Xeon with 6 or more cores will not work as the Dell BIOS will not allow that. To go there would require a higher spec Dell server which has a different BIOS to accommodate those. The T1700 Precision which is much like the 7020/9020 could only use a 4 core max Xeon such as the E3 1200 V3 series CPU you will be using.
I can confirm that Xeon E3 1240 V3 works perfectly. Previously installed macOS Mojave boots without any BIOS change/downgrade, all 8 threads visible in the monitoring tool integrated to macOS, so hyper threading works. On Windows, first I had to boot without hyper threading enabled, then task manager still showed I have the i5 4590 in the machine. After shutting Windows down, enabling hyper threading in the BIOS and booting again, it recognized the Xeon one and all threads were available.
One thing I don't understand though that under AIDA64/OCCT stress test the new CPU (which is an i7 4770 equivalent) runs much hotter than the i5 4590 did. Under AIDA64 the max temp of the hottest core is about 83°C (before it was 10°C less), under OCCT it reached 93°C after 1 hour. The latter worries me as it was measured in a room with 28°C so it might reach 100°C during summer. (Under synthetic stress tests, which is designed to be resource consuming, I know, but still...)
How is it possible considering the TDP of the Xeon CPU is less then the i5s? Do I need a 3rd party cooler? What are your i7 max temps?