Intel Xeon e3-1231v3 overclocking

After being a happy owner of Intel Xeon e3-1230v2 and e3-1230v3 I have bought e3-1231v3 for my current build.

The cpu was bought together with MSI Z97-G55 SLI motherboard at Computeruniverse: cpu, motherboard.

The e3-1230v3 I ran at 3.8ghz and e3-1231v1 has +100mhz of clock speed, that is why I hoped to run it at 3.9ghz or so.

Unfortunately this is not the case. For whatever reason I am not able to run all four cores at maximum turbo boost speed of 3.8ghz.

The motherboard BIOS and tuning application both show that 36 is the maximum cpu clock multiplier when all four cores are enabled.

I tried to disable all kind of power or thermal throtlling, but no luck. The maximum Cinebench 11.5 score was 8.08pts it is less of what my old e3-1230v3 was capable of.

I know, e3-1231v3 is not meant to be overclocked, but I run some virtual machines, and lots of applications at the same time that is why I would like to squeeze some more performance out of it, especially if keep in mind that e3-1230v3 was running at 3.8ghz with 8.40pts in Cinebench 11.5.

I am not sure, but it seems like the motherboard is the reason why I cannot tune up the cpu.

After all of these I just left my cpu run at its stock speed. In Cinebench 11.5 e3-1231v3 scores 7.87pts.

Views: 6629 Comments: 5
Brennon on 20 April 2015 03:19 says

If you really want to OC your xeon, try increasing its frequency not its clock. 100Mhz is standard and 105 shouldnt be to hard to achieve. That freq boost is across all cores at the standard clock effectively pushing alot more out of your chip.

Const on 20 April 2015 09:40 says

Brennon, I know that, but thanks for the advice.

Laurence on 29 July 2015 18:03 says

I have a Z87 Asrock Extreme 4 motherboard with the latest bios update with the same issue, can only get 2 of my cores running at x38.

Hope to understand why this is happening.

David on 11 September 2015 21:17 says

In case you guys haven't figured it out yet, the Xeon 1231 is a has well CPU, Intel disable more over clocking features for non-k has well chips. The previous generations could be overclocked 4bins (400MHz) above stock and run all cores at the same speed. Haswells can't do this anymore, bclk is the only way to squeeze more speed out of them I too have a 1231 and just learned this.

Const on 12 September 2015 01:15 says

David, thank you for the info. Looks like e3-1230v3 is even more interesting option then.