Xeons and MCE

[Lepton87]

Does MCE work with Xeons? It's multi core enhancement at least in Asus nomenclature. Other companies may name this feature differently but what it does is it runs all core at 1C turbo, so for example 5820K runs at 3.6GHz with all cores and that makes it faster than 5930K without it. I ask because there are some interesting Xeons SKUs that while right now very expensive, might not be so in a few years when companies will be upgrading.
For example Xeon Processor E5-2699 v3 is a 18C 2.3GHz but it has 3.6GHz turbo, 18C at 3.6 would be cool. Even 12C at 3.4-3.6 with so much cache would be sweet.

 

[cbn]

That is a very interesting idea. I would give ASUS or one of the other board makers a call if no-one here is able to answer.

P.S. I wonder what the power consumption of 18C at 3.6 Ghz would be? Or even 12C at 3.4 or 3.6?

 

[cbn]

I don't mean to side track this thread, but looking at this Xeon price list on Intel Ark, I got to wondering how much a processor like the $372 E5-1630 V3 (4T/8T @ 3.7/3.8 with 10MB cache, 140 watt TDP) would cost compared to a LGA 1150 Haswell i7 several years into the future?

Deep discount? Or too rare of a Xeon to find at a good price?

 

[Lepton87]

That is a very interesting idea. I would give ASUS or one of the other board makers a call if no-one here is able to answer.

P.S. I wonder what the power consumption of 18C at 3.6 Ghz would be? Or even 12C at 3.4 or 3.6?

I guess it would need water cooling, that's for sure but it has a bigger die than regular 8C HW-E die. It's over 680mm2 (18C) or just under 500mm2 (12C) so that would make it a bit easier to cool then those overclocked overvolted HW-E. 6 cores at 3.5 draw about 140W so that would make it about 400W, overclocked HW-E can draw as much.
ps. if that works then it should make a good CPU for a few of our forum members. 18C at 3.6GHz is better than 8C at 4.2-4.5GHz.

I don't mean to side track this thread, but looking at this Xeon price list on Intel Ark, I got to wondering how much a processor like the $372 E5-1630 V3 (4T/8T @ 3.7/3.8 with 10MB cache, 140 watt TDP) would cost compared to a LGA 1150 Haswell i7 several years into the future?

Deep discount? Or too rare of a Xeon to find at a good price?

take a look at how cheap are those westmere Xeons...

BTW. I didn't think of that before but I just realized that 16-18 cores at 3.2-3.6GHz could replace many 2P servers and there are programs that have licensing cost per core, that would be an awesome solution for a server board for such applications. Consumer boards are out of the question due to not supporting ECC...

 

[cbn]

ASUS and Asrock both told me this should work on any Xeons the boards support.

 

[cbn]

Bump to see if anyone else has experience or input.

 

[crashtech]

This is your proof?

http://forums.anandtech.com/showpost.php?p=37166984&postcount=5

I think you are a straight up guy, but there must be more than someone on the phone saying "it should work."

 

[Burpo]

Of course it works & always has.. Why wouldn't it? Not at 1 core turbo speed but 1X below that you can lock all cores.

 

[crashtech]

I've seen it not work on my very own workbench, but unfortunately did not document it. That's why I am skeptical. I think the problem is going to be that the feature is not always well documented in the available literature. But I shouldn't be trying to start an argument. I was just hoping more for a link to a list of boards or some such.

 

[cbn]

I was just hoping more for a link to a list of boards or some such.

I made the following thread to help us compile a list:

http://forums.anandtech.com/showthread.php?p=37274704#post37274704

 

[Burpo]

I don't believe any will run all cores at highest multi.. Usually 1 less than highest is what the boards I've seen will do.

 

[cbn]

Consumer boards are out of the question due to not supporting ECC...

Some consumer boards (like the ASRock X99 Extreme 4) do support ECC:

http://asrock.com/mb/Intel/X99 Extreme4/

 

[crashtech]

I made the following thread to help us compile a list:

http://forums.anandtech.com/showthread.php?p=37274704#post37274704

I hope we can see some participation!

 

[cbn]

Assuming MCE and high core count Xeons work together, I wonder what the effect would be on data integrity?

 

[escrow4]

I don't believe any will run all cores at highest multi.. Usually 1 less than highest is what the boards I've seen will do.

My X99 Extreme 4 runs my 5930K @ 3.7GHz max turbo no problems MCE enabled.

 

[Idontcare]

My X99 Extreme 4 runs my 5930K @ 3.7GHz max turbo no problems MCE enabled.

That's an otherwise already multiplier unlocked chip.

The concern/question here in this thread is whether MCE functions identically so with multiplier locked/capped Xeon processors.

 

[cbn]

According to this article entitled "MultiCore Enhancement: The Debate About Free MHz" from Anandtech (dated 2012) the motherboard is what actually controls the speed of processor on the Sandy Bridge and Ivy Bridge processors.

http://www.anandtech.com/show/6214/multicore-enhancement-the-debate-about-free-mhz

However this technology is not defined by the processor itself. The act of telling the processor to run at a certain speed is set by the motherboard, not the processor. So as part of the deal with Intel, motherboard manufacturers’ code in the BIOS the algorithm to make the CPU switch speeds as required.

Not sure what has changed on the LGA 2011-3 Xeons or if the LGA 2011 Xeons were capable of MCE overclocking?

 

[Thrawn7]

Just tried this with a Xeon E5-2660 v2 ES. Not working so far.

On MSI X79-GD65 the "Turbo Enhanced" field disappears from BIOS. On Asus P9X79 LE the "Multicore Enhancement" field doesn't appear at all even on 3930K.

Either way, can't get the top multiplier to work.

 

[lucien_br]

X99 Taichi BIOSMod + Xeon 2686v3 overclocked@3.6Ghz all 18-core.
OverClock all core to turbo max works with all Xeon v3. V4 not works!