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AMD® Phenom™ II Overclocking Thread

Gareth: cool mate no worries, drop one off sometime in the future and hope you feel better soon! :)

gurusan: Interesting? . . . isn't the i3 slower that what you got? (3.8GHz and 4 cores) or are you planning some 5GHz clocking expedition! :p . . . did you see the AIIX4630@3500MHz vs i3-530@4000MHz fritz? . . . no worries either way man and it was an honour to have you contribute to the thread, your an OcUk legend! :cool:
 
Yup I know it's slower but I have spent more than I was planning on the i5 motherboard (scored an Asus P7P55D Deluxe, I've actually had my eye on this board for quite some time and I never like skimping on the mobo), and the Thermolab Baram I currently have is not compatible with socket 1156 so I will need a new cooler (have decided on the Cogage Arrow); the expenses are mounting up. I'll have to make do with the i3 530 for a couple weeks. Also I do have a sweet spot for highly clocked dual cores :D I am hoping for a 4.3GHz+ clock...we'll see.

I'll need to be careful with the Clarkdale though as there's a rapidly filling 32nm graveyard. :eek:
 
Some interesting points in there. I expecially like the idea of a BE version clocked higher than the standard ones.

Maybe a nice 3.4ghz 125W BE, that'll clock to around 4.0ghz....
 
BE x6 is likely to come in at 3.2ghz @ 140w TDP I would think...

What excites me is

a) The new turbo functionality for extra mhz boost to single cores

and

b) Using this in conjunction with K - 10 stat... just set some nice profiles:

1 - 2 cores loaded: Clock to 4.4ghz
3 - 4 cores loaded: Clock to 4.2ghz
5 - 6 cores loaded: Clock to 4.0ghz

guestimate figures I know but will be really nice :)

Anyway's taking the thread off-topic
 
Outrageous! :) . . . AMD® Phenom™ II X6 BE :D

Will they need their own dedicated thread or will they be part of this thread?

Changing subject quickly I have a question although it's not urgent so drop an answer off sometime when you post next . . . . I want to know a bit more about TDP and the way a motherboard has a TDP rating?

This is the mobo I am using (AM2+/DDR2)


Support CPU up to 125W

Now my question is this . . . I'm using a 95w TDP chip that is overclocked in the above mobo, how do I work out the TDP of the chip once its overclocked & overvolted? . . . . I'm thinking at some point I will hit some kind of "TDP Wall" :confused:
 
I would think you can guestimate the TDP based on higher end chips of the same stepping running at similar clocks and voltages.

The trouble is, once we get above 965 speeds we're into a bit of an unknown. I'm not sure about cpu-nb overclocking and overvolting either.

I saw this coming a while back so made sure my board had 140w support as well as DDR2 and DDR3. Fingers Crossed that Jetway keep the BIOS updates coming...
 
http://www.antec.outervision.com/

Interesting tool Wayne, I think this might be my trouble, a 4ghz overclock at 1.55v give me a TDP of 209w, up from 3.4ghz @ 1.375v, and my motherboard isn't the best really, it's only a M4A79XTD Evo. I always knew I should have gone for the Crosshair III haha.

I'm probably not going to upgrade from the 965BE C2 to an X6, I'll wait for the 32nm (or is it 22nm AMD are going with next? I can't remember), and build some mad x8 or x12 watercooled monster. :P

I believe it won't be long until Intels patent on HT technology is over either? I can't wait. For a true AMD fanboy like me, the future's looking goooood. :P
 
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Generally accepted formula for overclocked TDP:

TDP * ( OC MHz / Stock MHz) * ( OC Vcore / Stock Vcore )^2
---------------------------------------------------------------
So for example my old 705e: 2.5GHz @ 1.20V stock to 3.85GHz @ 1.488V

65W * (3850MHz/2500MHz)*(1.488V/1.2V)^2 = 154W
 
Good question, you should actually be using the voltage in CPU-Z for both cases (pre and post overclocked) as that's probably the most accurate software reading.

Also remember what TDP actually is; even though it's in Watts it's not an actual power rating. It's basically just a manufacturer's suggestion as to approximately how much heat the cooling should be capable of removing.
 
Oh dear now I'm confused? . . . so does that mean the motherboards TDP rating improves if you put better heatsinks on it and improve your cooling? :D

Which AMD board has a "humongous" TDP rating?
 
oh now I see why you are confused. The motherboard has a tdp rating as well for the CPUs.....this is something I've not seen until recently with the AMD boards...and tbh I think it's just marketing BS.

The power circuit for the CPU on a mobo is going to have certain current ratings depending on the quality and number of components used. Obviously as the CPU draws more current the components on a mobo will start to heat up and come close to or exceed their maximum current ratings and temperature ratings. This is no different on an Intel or AMD motherboard though so I have no clue why AMD motherboards advertise things like 140W cpu support.

This is also why I like motherboards with good cooling on the mosfets and a decent number of power phases....you can skimp on this stuff when running stock but when you overclock it becomes more important. I wouldn't want to run a 4GHz phenom quad on a board with no cooling on the mosfets for example
 
Wayne: You will have the following being released at the end of April

Thuban X6 CPU which will be:

2.6ghz X6 1035T 95w TDP
2.8ghz X6 1055T 95w TDP
3.0ghz X6 1075T 125w TDP
and not yet confirmed...
3.2ghz x6 1095T? 140w TDP

You will also have the new Zosma which are Thuban cores will two disabled cores (is the general consensus)

960T 95w - 3.4ghz
975T 95w - 3.6ghz

There is limited information on these are they are Q2 2010 release.

Now what's perhaps more interesting is that "Scorpius" platform (Bulldozer Core, 4 / 8 core 32nm, ATI 6xxx series GPU) Are now being shown on the AMD road map as AM3 components.

z000006-AMD-Roadmap.png

AMD Road Map from CeBIT 2010
Source: http://www.golem.de/1003/73484.html
Direct Link: http://scr3.golem.de/screenshots/1003/AMD-Thuban/thumb480/z000006-AMD-Roadmap.png
 
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^^ exactly the reason I insisted on getting an 890 board mate ;)

Looking forward to X6 - my 965BE is only a stop gap (cheapest CPU i've ever bought @ £130!)
 
My mam seems to have a fetish of keeping my room hot, I.E, around 10C higher in ambient than the loft..

Currently doing a blend 8 hour at 3.8GHZ with ample voltage.

I may's well while I'm at college, to see if I'll have problems when going for 4GHZ blend.

So, expect my 3.8GHZ temps to be 52c =/.
 
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