Xeon E3 -> Overclock via Turbo Boost?

FreeStream · 5 Mar 2013 at 19:07

I'm aware that these chips are multiplier locked, but do these chips allow for the +4 bins that the Core i5/i7 counterparts allow?

I can't find any proof so if anyone has any proof that these chips allow for the +4 bin then that would be great!!!

Thanks!!

Subliminal Aura · 5 Mar 2013 at 19:38

Nope, as frigid as the pope.

3770 or the 2600 are your best options - Also depends on your mobo - z68 or better

FreeStream · 11 Mar 2013 at 18:51

Subliminal Aura said:
Nope, as frigid as the pope.

3770 or the 2600 are your best options - Also depends on your mobo - z68 or better

Don't support ECC and some people claim that they have the support, but nothing concrete.

It is a Asus P8B-WS, C206 chipset.

Subliminal Aura · 11 Mar 2013 at 18:59

Concorde Rules said:
Don't support ECC and some people claim that they have the support, but nothing concrete.

It is a Asus P8B-WS, C206 chipset.

No problem with your board and ECC with a Xeon but definitely can't see a turbo overclock on the Xeons.

Where are these claims/people that you talk of ? Email in trust if it's not forum friendly

FreeStream · 12 Mar 2013 at 13:55

To be honest I might just buy one and see.

Makes no difference in the end.

ubersonic · 12 Mar 2013 at 14:08

Concorde Rules said:
I'm aware that these chips are multiplier locked, but do these chips allow for the +4 bins that the Core i5/i7 counterparts allow?

Yup, I ran a E3-1245V2 @4GHz for a couple of hours but saw no real difference apart from what cine-bench said so set it back to normal.

Subliminal Aura · 12 Mar 2013 at 14:10

ubersonic said:
Yup, I ran a E3-1245V2 @4GHz for a couple of hours but saw no real difference apart from what cine-bench said so set it back to normal.

The question is BCLK overclock or did you manage to do it via the turbo multiplier

ubersonic · 12 Mar 2013 at 14:38

Turbo multi, on a Z68 board, just set it to 40.

Subliminal Aura · 12 Mar 2013 at 15:03

ubersonic said:
Turbo multi, on a Z68 board, just set it to 40.

40? That doesn't make sense - Why didn't you set it to 42 ?

What was the multiplier for all the cores under full load with something like intel burn test.

ubersonic · 12 Mar 2013 at 15:05

Subliminal Aura said:
40? That doesn't make sense - Why didn't you set it to 42 ?

Because I was running it at 4.0GHz like I said.

Subliminal Aura · 12 Mar 2013 at 15:06

ubersonic said:
Because I was running it at 4.0GHz like I said.

You can't be running at 4ghz on all cores unless you also up the BCLK.... Do you understand how the turbo works ?

ubersonic · 12 Mar 2013 at 15:36

Subliminal Aura said:
You can't be running at 4ghz on all cores unless you also up the BCLK.... Do you understand how the turbo works ?

O.o

Yes, the E3-1245V2 has a non turbo multi of 34 and turbo multis of +2/+3/+4/+4, by raising the all cores turbo 4 bins over its stock setting of +2 you get +6, added to 34 thats 40, and 4GHz.

Subliminal Aura · 12 Mar 2013 at 15:48

ubersonic said:
O.o

Yes, the E3-1245V2 has a non turbo multi of 34 and turbo multis of +2/+3/+4/+4, by raising the all cores turbo 4 bins over its stock setting of +2 you get +6, added to 34 thats 40, and 4GHz.

Very Cool.... but you miss the fact that only 1 core will ever hit the max turbo multiplier(that's what I was getting at

as explained here / thread

If you put all the cores under load on your setup the the frequency across all cores will be 3.7ghz (this should be your specified overclock not 4ghz

)

Anyway that's very impressive as I couldn't get my E3 to budge on a Z68 - you must be the first to prove it.... Any chance you could post screenies with the system under full load when you get a chance ? Cheers

Subliminal Aura · 12 Mar 2013 at 15:58

Here's my +4 on my i7-2600

[1] At idle a single core can burst to 4.2ghz (this is a random event)

[2] At full load all the cores register 3.9ghz (solid no fluctuations)

ubersonic · 12 Mar 2013 at 16:08

Subliminal Aura said:
Very Cool.... but you miss the fact that only 1 core will ever hit the max turbo multiplier(that's what I was getting at as explained here / thread

If you put all the cores under load on your setup the the frequency across all cores will be 3.7ghz (this should be your specified overclock not 4ghz )

Ill try and explain what I did further, heres a quote from the thread you linked:

Core i7-2600

35X - 4 cores active
36X - 3 cores active
37X - 2 cores active
38X - 1 core active

If the bios allows, you can get a +4 overclock on top of the base results above.

39X - 4 cores active
40X - 3 cores active
41X - 2 cores active
42X - 1 core active

What I did was basically:

Xeon E3_1245V2

36X - 4 cores active
37X - 3 cores active
38X - 2 cores active
38X - 1 core active

To:

40X - 4 cores active
40X - 3 cores active
40X - 2 cores active
40X - 1 core active

Giving a 4GHz turbo all the time.

Subliminal Aura said:
Anyway that's very impressive as I couldn't get my E3 to budge on a Z68 - you must be the first to prove it.... Any chance you could post screenies with the system under full load when you get a chance ? Cheers

Im pretty sure I remember the guy I sold it to doing the same thing, he mentioned it in a thread on here somewhere. I can show you a screenshot of my current i7 3820 running with a 40x multi on all four turbo clocks but I doubt that's any use.

Subliminal Aura · 12 Mar 2013 at 16:19

Very cool - I'll take your word for it

.... Now I have to wonder why I couldn't get my E3 working grrrrrrr

I also wonder if it'll work on the higher Xeons like an E3-1275v2

// Thread makes me want to buy back my E3 :rolleyes:

ps The misunderstanding was due to me thinking that you were running all the cores at 4ghz lol