Originally Posted by mouacyk
Nice work on the research and you got some results, albeit not exactly what you wanted. However, the conclusion you draw may be flawed.
Without bumping voltage at all, my X5470 was only able to do 3.6GHz on my P35 board but on my P45 board with LLC handled 4GHz just fine. I think to get the most out of your E xeon, you will need a better motherboard chipset that can provide better power delivery. In hindsight, the mod should have pointed out things like this, so as to not raise so much hope for people on P35 chipsets (like myself). I was determined to see a 4GHz LGA771/775 CPU though, so I ebay'ed my board and got a decent deal.
So I took your advice about looking into a P45 board. I realised that I actually have a Gigabyte GA-EP45-DS3 board set up in another system. I spent the best part of the day switching components over. Replaced the P35 with the P45. I thought, well it's not really getting much use on the secondary system, so I may as well use it instead.
This board is so much better at overclocking. The 3.4 Ghz wall was no more. It is currently sitting at 3.8 Ghz with vcore set to I believe 1.26 or 1.27 in the bios. At idle it hovers between 1.216 and 1.232. At load it hovers between 1.168 to 1.200. Temperatures are around mid 50's with some of the cores touching high 50's. This is with both LinX and Intel Burn Test by the way. These two programs stress the CPU more than others and generates more heat as a result. In real world situations it should be a lot more cooler. So how does it look? I'm thinking of getting to the 4.0 Ghz milestone! What do you recommend I keep the vcore under and also what about temps?
Anyway, a quick question. There's one small but loud problem with this board. Although this board works really well, the CPU Fan header on the actual mobo does not function. I think this was short circuited many years ago. So that fan header is pretty much useless. I've connected the CPU Fan instead to one of the other SYS_FAN headers on the board. Problem is, the fan is spinning at max RPM and it's pretty loud. It doesn't adjust fan RPM according to temperatures, so even when the CPU is running cool, it's still whirring away. Is there anyway around this? Perhaps some sort of add on or something I can do to make the CPU Fan function as it's supposed to?Edited by Dante May Cry - 2/11/16 at 12:33pm