TPU's Core i7 Overclocking and Feedback

[n-ster]

But I heard some d0s aren't so good... any specific batches? wow... 4.2 at 1.26V... The stock cooler could handle that

 

[trt740]

Yes I believe they're doing it on purpose. Not to overclockers but to mainstream people.



My 4.0 with the D0 was 1.216V I wouldn't be surprised if you could get that.

I think your right I'm testing 1.224v (21x 191=4.0ghz) now.

 

[mlee49]

How can you possibly be stable at 1.224? I want your chip :evileye:

 

[trt740]

like this and my core temps are up because I was folding my GPU at the same time

How can you possibly be stable at 1.224? I want your chip :evileye:

raising the case temps

 

[Tatty_Two]

Make that 1.296v and dropping, much better than any C0 I have seen on air.

If you can get it to 1.25v it is Without using turbo of course that only powers up one core

 

[Binge]

If you can get it to 1.25v it is Without using turbo of course that only powers up one core

Stop lying? Turbo works on all cores.

 

[Tatty_Two]

Stop lying? Turbo works on all cores.

Really? Thats strange, some of my software monitioring stuff must be doing false readings then as it's reporting the 20x multi speed as the system speed.... you learn something new every day! Thinking about it, WPrime also shows the slower 20x speed.

Edit: OK done a bit of reading, it appears that with the new "power control unit" (as in Power gates) built into the architecture, Turbo Mode CAN speed up all cores but only does so if all cores are being used, it gives you what you need, so if you just boot to desktop and are only using one core, or say running a single thread app such as SuperPi, then you only get one core at 21x, if you are playing a game with turbo mode enabled and the game uses 2 of your cores, then 2 are running at 21x and 2 at 20x (on a 920), does that sound about right or am I still missing something? If that is about right, then I was right, boot to desktop and only one core is working at the higher speed

 

[trt740]

here ya go tatty, HTT on , using 19x mutiplier, case side on and all cores enabled

Really? Thats strange, some of my software monitioring stuff must be doing false readings then as it's reporting the 20x multi speed as the system speed.... you learn something new every day! Thinking about it, WPrime also shows the slower 20x speed.

Edit: OK done a bit of reading, it appears that with the new "power control unit" (as in Power gates) built into the architecture, Turbo Mode CAN speed up all cores but only does so if all cores are being used, it gives you what you need, so if you just boot to desktop and are only using one core, or say running a single thread app such as SuperPi, then you only get one core at 21x, if you are playing a game with turbo mode enabled and the game uses 2 of your cores, then 2 are running at 21x and 2 at 20x (on a 920), does that sound about right or am I still missing something? If that is about right, then I was right, boot to desktop and only one core is working at the higher speed

OH, and I forgot to mention my GPU is folding during this prime and I'm using air cooling with only one 120mm on my heatsink. I'm now testing 20x 205 =4.1ghz at 1.26v to start with

 

[trt740]

Stop lying? Turbo works on all cores.

no Binge turbo 22x works on single threaded apps and for only one core and 21x works on all core for two threaded apps and anything after that, example a 4 threaded app, would work on 20x with turbo enabled and thats per Intel.

 

[Tatty_Two]

Very nice Tom, I will see if mine can match that, for the sake of interest not competition, I am impatient though so I will just run OCCT for a few minutes to support the screenie....... laters!

 

[Binge]

no Binge turbo 22x works on single threaded apps and for only one core and 21x works on all core for two threaded apps and anything after that, example a 4 threaded app, would work on 20x with turbo enabled and thats per Intel.

Then why is there a difference in results between a WPrime (8threads) at 200x21(turbo on) and 200x20? Riddle me that!

 

[trt740]

Then why is there a difference in results between a WPrime (8threads) at 200x21(turbo on) and 200x20? Riddle me that!

not sure call Intel customer service and ask

 

[Binge]

Damn you saw through my sarcasm... There's a noticible difference between turbo on and off, and the difference is too much to be just on one core. A long while ago (December) I talked with a guy named Serge Bedwani of Intel and he gave me a great rundown of the chips. One of the key features he mentioned was Turbo He said:

"Turbo will allow the user of the i7 920 to achieve a multiplier of x21 instead of x20 if power and thermal characteristics meet a certain set of requirements. This means encoding video and 3D rendering can be done that much faster. This is a feature supported on our Smackover boards. There is also a x22 multiplier which has more rigerous requirements and will only work on a single core and two threads. This is also a function embeded in Turbo mode."

That's a bit better than customer support. Talking with an engineering team manager is usually much better anyway.

 

[Tatty_Two]

Tom, I think your D0 can pip my little C0, the lowest voltage I can run stable with 4 gig with HT on is 1.26v in BIOS, loadline gives her 1.28v in OCCT, 201 x 20x, no turbo...................Nice temps though I can boot into windows and run WPrime with 1.23v at these speeds and I can get 4.1gig on this voltage with HT off.

 

[n-ster]

I thoughty an average Vcore you needed for 4ghz is 1.38 to 1.4 ....

 

[Binge]

I thoughty an average Vcore you needed for 4ghz is 1.38 to 1.4 ....

Not at all. 4.0GHz is not that hard, or at least it shouldn't be.

 

[trt740]

Tom, I think your D0 can pip my little C0, the lowest voltage I can run stable with 4 gig with HT on is 1.26v in BIOS, loadline gives her 1.28v in OCCT, 201 x 20x, no turbo...................Nice temps though I can boot into windows and run WPrime with 1.23v at these speeds and I can get 4.1gig on this voltage with HT off.

Sounds like you got one of the last C0 chips and most likely is a D0 in disguise. Almost no C0 chips I know of will do 4.0ghz at that voltage on air. On water maybe but not on air.

 

[Tatty_Two]

I thoughty an average Vcore you needed for 4ghz is 1.38 to 1.4 ....

Again, it's very chip dependant but I would also think (guess) that some boards perhaps control the various voltages better than others, not sure.

 

[Tatty_Two]

Sounds like you got one of the last C0 chips and most likely is a D0 in disguise. Almost no C0 chips I know of will do 4.0ghz at that voltage on air. On water maybe but not on air.

I can always tell when you get a decent chip..... your just so much happier!

 

[trt740]

Again, it's very chip dependant but I would also think (guess) that some boards perhaps control the various voltages better than others, not sure.

it's more about chip my last C0 needed 1.35v to hit 3.7ghz on this board.

 

[trt740]

I can always tell when you get a decent chip..... your just so much happier!

yes happier than a dog with two dicks

 

[Tatty_Two]

it's more about chip my last C0 needed 1.35v to hit 3.7ghz on this board.

probably, thing is, i was considering being greedy and getting a D0, I really dont think there is any point, I am sure some of the lesser D0's perhaps wont clock as well as this C0.

 

[trt740]

probably, thing is, i was considering being greedy and getting a D0, I really dont think there is any point, I am sure some of the lesser D0's perhaps wont clock as well as this C0.

No your chip is rare. I had 3 C0's and the best I could do was 3.9ghz at like 1.375v without turbo. You would not get any benefit by getting a D0 because as far as I can tell you have one now. To get that 3.9ghz I used a EVGA board that had some very cool voltage controls when using turbo. However, this Rampage is really good as well.

 

[Binge]

Gotta love getting a rare C0. I know I did.

 

[Chicken Patty]

great job with your new CPU trt