TPU's Core i7 Overclocking and Feedback

Tatty_One said:

Fits....... very nice, now get some volts runnin thru them CPU's!

@ mastrdvr.... yes anything 1156/1366 will in most things get more performance from turbo enabled as the linky above clearly shows.

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Ok so im confused... lets say I'm stable on an 1156 at 4Ghz with 1.28v... (not even sure that TB works after 4ghz but lets say it does) with TB off.

If i enable Turbo Boost, I would have to up the voltage to 1.33v to prevent BSOD - because the CPU ramps up to 4.2ghz on a 21x multi - clearly i would get more performance over the 4ghz setup, at the cost of higher temps and volts, but would I get higher performance than if i was just to run a straight 4.2Ghz overclock? No right?

Sorry for the stupid question, but Im not understanding if enabling Turbo Boost actually speeds up the clock per clock operation of the chip by 5% or if its a performance increase based on clockspeed increases.

tRFC is now 72, everything else is very similar

finally got myself a D0 i am very pleased with it,this is as far as it goes on stock voltage

boulard83 said:

http://www.infodupat.com/MiscPics/150pass_CAS7.jpg

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Very nice and I must say your LinX numbers are always what I've talked about. Very, very minor deviation from one loop to the next. Also, I'm guessing that is with vdroop? That should pull down to about 1.2v according to CPUz right? What kind of voltage do you need with HT enabled or do you know?

mastrdrver said:

Very nice and I must say your LinX numbers are always what I've talked about. Very, very minor deviation from one loop to the next. Also, I'm guessing that is with vdroop? That should pull down to about 1.2v according to CPUz right? What kind of voltage do you need with HT enabled or do you know?

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Just a lil more for HT (dont know exactly) but i dont use it since im a pure gamer.

This I7 is rock solid. Never had any BSOD in my entire life with this rig. I only had when i do Xtrem OC

Best 3d06 is at 4.6ghz HToff and 4.44ghz HTon with 1.4925vcore, lower = BSOD.

I always leave HT on since I will sometimes encode too and I don't want to bother rebooting just to turn it off and on. I really don't feel a difference in games and I play BC2 online, Borderlands, and I could others that I can't think of right now. I've been messing with my overclock again since I started to encode some blu-rays to my hard drive so I could watch them. I was fine with a 3.33Ghz on core and uncore with ram at 1333 but wanted a little more to help make encoding go faster. I'm figuring 3.6 core and uncore should be about right with ram about 1440 using 8x multi. I can't get these G.Skill Pis to do 1800 and pick up all 3 sticks. Its pissing me off too. I was messing tonight and was able to get 8-8-8-24 2T at 1780 but at 1790 one of the sticks disappear and I can't figure out any way to get it pick up. I'll probably have to mess with refs to get it to post.

Fitseries3 said:

SR2 time!

not bad for stock and only 2 480s...

http://img.techpowerup.org/100518/Capture049.jpg

physx off....

http://img.techpowerup.org/100518/Capture050.jpg

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mstenholm said:

Nice Fits. I asume that you will add a small OC and run it again

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Tatty_One said:

Fits....... very nice, now get some volts runnin thru them CPU's!

@ mastrdvr.... yes anything 1156/1366 will in most things get more performance from turbo enabled as the linky above clearly shows.

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As long as we've been waiting for this, you better get your OC on tonight

i didnt want to doublepost so check my megarig thread for screens.

i'll post really really good ones here every once in a while.

start here... http://forums.techpowerup.com/showthread.php?t=112192&page=51

So Fits, you planning on sleeping tonight?

no. too much to work on.

phanbuey said:

Ok so im confused... lets say I'm stable on an 1156 at 4Ghz with 1.28v... (not even sure that TB works after 4ghz but lets say it does) with TB off.

If i enable Turbo Boost, I would have to up the voltage to 1.33v to prevent BSOD - because the CPU ramps up to 4.2ghz on a 21x multi - clearly i would get more performance over the 4ghz setup, at the cost of higher temps and volts, but would I get higher performance than if i was just to run a straight 4.2Ghz overclock? No right?

Sorry for the stupid question, but Im not understanding if enabling Turbo Boost actually speeds up the clock per clock operation of the chip by 5% or if its a performance increase based on clockspeed increases.

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I suppose thats one way at looking it but the wrong way, firstly I cannot speak for S1156 but I would find it hard to beleive that there is a max limit on Turbo, on 1366 I run turbo at 4.3gigs..... now just to straighten things out........

1. You have 4Gig on a 20x multi with a Bclock of 200
2. I have 4gig on a 21x multi with a BClock of 191 (thats slightly over 4gig however thats not why it is faster thats just the math)
3. My temps (should) be lower than yours cause I am only using the speed when I need it
4. Many will use less volts and therefore heat with the lower Bclock (cant speak for 1156 users personally)
5. It's likely that when Turbo is engaged you will use more power.
6. My 4gig is generally faster than your 4gig for most things
7. Too many people fail to realise that in many things with HT on, their system is actually slower yet almost everyone has HT enabled, where as Turbo is where the real benefits can be and many dont enable, Turbo is the great strength of the architecture NOT HT..... why? because almost everything benefits from Turbo being enabled (as my linked article shows.... upto 11%, although I am assuming that the article runs at the same speed just using a 21x multi with lower BClock otherwise what would be the point in the first place?), few things benefit from HT, there still is just not enuff around coded to fully use multi threads (yet).

Which you gonna choose?

A good test of the theory, would be superPi, I have not tried it but it's single threaded, so run it twice, both at the same speed but one with turbo and one without and see if they are the same times.

I bsod on this mobo if I enable turbo... it only comes back on at 3.8ghz without issues :/ and I have no HT so my choice is pretty limited.

but yeah, turbo > no turbo at the same clock but 4.0 ghz is 4.0 ghz whether you hit it by turbo or not. I just cant enable it past 3.8 and for most things I would imagine that 4.0 non turbo is faster than a 3.8 turbo.

But I will try to get it enabled to see if it can give me an OC boost... i think i might hit the wall though with my vcore... i already LinX at 74C on air in a cold room, i dont think adding more juice is a good idea.

phanbuey said:

I bsod on this mobo if I enable turbo... it only comes back on at 3.8ghz without issues :/ and I have no HT so my choice is pretty limited.

but yeah, turbo > no turbo at the same clock but 4.0 ghz is 4.0 ghz whether you hit it by turbo or not. I just cant enable it past 3.8 and for most things I would imagine that 4.0 non turbo is faster than a 3.8 turbo.

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Yes that makes sense, so could you do some testing at 3.8gig on say SuperPI, one at 20x and one at 21x and see as I am intregued, of course to be honest in many things, would we really notice a 5% improvement unless it was a benchmark?

Tatty_One said:

Yes that makes sense, so could you do some testing at 3.8gig on say SuperPI, one at 20x and one at 21x and see as I am intregued, of course to be honest in many things, would we really notice a 5% improvement unless it was a benchmark?

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once I get home Ill run some tests.

physx off...

ok bad news bears on the TURBO... looks like the 3.8 was not stable... i cant get it stable at all it just boots into windows and then bluescreens at 1.35v - ooooon a chip that hits 4.3ghz at 1.35v

super.

phanbuey said:

ok bad news bears on the TURBO... looks like the 3.8 was not stable... i cant get it stable at all it just boots into windows and then bluescreens at 1.35v - ooooon a chip that hits 4.3ghz at 1.35v

super.

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Maybe it's just your board not liking turbo, assuming of course you have EIST enabled and yor Windows powerscheme is set to performance? I have actually found that I use less voltage with Turbo, what I mean there is I can get 4.2gig using Turbo (and HT off so the same as you in that respect) with 1.32V (1.4V with HT on) but if i disable Turbo and increase the BClck on a 20x multi she needs 1.37V.

Tatty_One said:

Maybe it's just your board not liking turbo, assuming of course you have EIST enabled and yor Windows powerscheme is set to performance? I have actually found that I use less voltage with Turbo, what I mean there is I can get 4.2gig using Turbo (and HT off so the same as you in that respect) with 1.32V (1.4V with HT on) but if i disable Turbo and increase the BClck on a 20x multi she needs 1.37V.

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I stopped buying specific motherboards because the turbo function wasn't up to snuff. The Rampage II Extreme used to have a terrible bios. Now it works very well with turbo. Another thing to consider is some i7s have weaker internal sections than others. The Multiplier may be stressing the CPU more than higher uncore/BCLK, and that's ok as long as the user can work around that. I hope phanbuey doesn't lose heart completely, but the fact is he won't know until he tries either another board, CPU, or both.

Binge said:

I stopped buying specific motherboards because the turbo function wasn't up to snuff. The Rampage II Extreme used to have a terrible bios. Now it works very well with turbo. Another thing to consider is some i7s have weaker internal sections than others. The Multiplier may be stressing the CPU more than higher uncore/BCLK, and that's ok as long as the user can work around that. I hope phanbuey doesn't lose heart completely, but the fact is he won't know until he tries either another board, CPU, or both.

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Very good points there thank you, my UD4P likes turbo fortunatly, I gather you are a beleiver that Turbo can be a real positive with the right kit.

Anyone know how well the later 39xx batches of 950s are fairing?

FWIW, my 920 does: 4ghz core, 3200 uncore and 1600 ram 7-7-7-18, 200 bclk
This with 1.25v core and vvt, 1.14 ioh, and 1.56v ram in bios. This is with llc on. 4.2ghz on core takes another .25v on core.

I'm just trying to get a 950 for the higher multi for some higher core clocking without pushing the bclk.

mastrdrver said:

Anyone know how well the later 39xx batches of 950s are fairing?

FWIW, my 920 does: 4ghz core, 3200 uncore and 1600 ram 7-7-7-18, 200 bclk
This with 1.25v core and vvt, 1.14 ioh, and 1.56v ram in bios. This is with llc on. 4.2ghz on core takes another .25v on core.

I'm just trying to get a 950 for the higher multi for some higher core clocking without pushing the bclk.

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What are you hoping to accomplish? Higher multi without base clock? Question is why? Higher overal clock?

I'm not an experienced overclocker but I watch the boards enough to know if you're getting a good voltage for your oc, multiplier doesn't matter much. State your dreams, you'll get better response.

4500 core

Seriously though, that's nice for benching but I'd rather be able to run a higher uncore without pushing my ram. I've never really messed around with pushing the ram since it seemed to be trivial and take up too much time. Until recently I didn't have another system so I didn't have time to mess with the ram.

While the voltage is good for the clock, pushing uncore over qpi is where the trouble is. I'd rather run 180 bclk so I could do 4000 qpi and push the uncore and not need to shove the volts until it gets closer to 4ghz. This while being able to do 4ghz core.

I've seen some cheaper 950s on ebay is the only reason I'm asking.

BTW, I've got a Noctua D14. For my 920 at least, I don't see 80+C until I'm over 1.35v core with llc. That's about 1.425v with vdroop. Also, no I don't live in an ice cube. 25C is a constant ambient. I can run the Noctua passive and see barely 80C with 1.25v with vdroop and pass 25 loop LinX full load. Comes to a little over an hour.

Damn nice clocks! looks like some kinds of phase cooling for -6?