Max Tjunction secret revealed soon

[CTho9305]

edit: forgot to add my conclusion - so in conclusion I believe the reason it took Intel this long to publish what they knew >1yr ago is that this data betrays the fact that Intel's QX's are factory overclocked by way of manipulating the Tj-max value.

Have you looked at other companies' max temperatures?

 

[nevbie]

So certain type of processor problems are a function of clockspeed and temperature. And Intel needs some safety distance to that true problem limit, so they have to start lowering Tjmax at some point...

Ahh, whatever, overclockers probably hit other problems than heat first, with these 45nm ones.. or maybe not, if the effect of clockspeed gets too strong after some point.

Good reply in any case.

 

[geokilla]

Ya know. I take that back on the 140C. I wasn't thinking clearly lol.

100C is pretty high imo. So what do you guys feel comfortable pushing your temperatures to? I'll probably back down at around 70 to 80C....

What do you think the Tjmax is for 65nm CPUs? I'd say a guess of around 90C?

 

[VirtualLarry]

From link

"A high TJis not necessarily a bad thing?Even a 30W device can have a high TJif the heatsinkis small?Small heatsinksare usually less expensive than large ones
Increasing TJby 10 °C on 65nm reduced heatsinkcost by ~$2
High TJhas benefits?Reduces heatsinksize and cost ??Smaller systems?Reduces typical fan speed ??Quieter systems?Lower shipping costs ??Lower cost systems?Reduces amount of resources used ??Environmental benefit
TJspecification is set by the device manufacturer and will be in line with quality and reliability requirements"

So now we know how much Intel is saving by shrinking the heatsinks. Who here would pay $2 for the larger heatsinks? "I know I would, overclocking 45nm on a stock heatsink might be a lot more viable with the larger heatsinks.

 

[Idontcare]

Originally posted by: CTho9305

edit: forgot to add my conclusion - so in conclusion I believe the reason it took Intel this long to publish what they knew >1yr ago is that this data betrays the fact that Intel's QX's are factory overclocked by way of manipulating the Tj-max value.

Have you looked at other companies' max temperatures?

Just did, ouch.

Phenom X4

140W TDP 9950 max temp is 64°C

125W TDP 9850 and 9750 max temp is 61°C

95W TDP 9650 and 9550 max temp is 70°C

 

[graysky]

Originally posted by: bryanW1995
Update (8.21.2008):

45nm Desktop Dual-Core Processors
Intel Core 2 Duo processor E8000 and E7000 series - 100°C

45 nm Desktop Quad-Core Processors
Intel Core 2 Quad processor Q9000 and Q8000 series - 100°C
Intel Core 2 Extreme processor QX9650 - 95°C
Intel Core 2 Extreme processor QX9770 - 85°C

I read the PP slidedeck as well, but there is no mention of xeon equivalents of the Q9000 series (i.e. my X3360). I'm assuming it too is 100 °C?

The other thing that pissed me off is that I saw no mention of the older 65nm cores.

 

[soccerballtux]

what about core 2 duos non extreme 65nm? My proc. It's a conroe.

 

[bryanW1995]

Originally posted by: graysky

Originally posted by: bryanW1995
Update (8.21.2008):

45nm Desktop Dual-Core Processors
Intel Core 2 Duo processor E8000 and E7000 series - 100°C

45 nm Desktop Quad-Core Processors
Intel Core 2 Quad processor Q9000 and Q8000 series - 100°C
Intel Core 2 Extreme processor QX9650 - 95°C
Intel Core 2 Extreme processor QX9770 - 85°C

I read the PP slidedeck as well, but there is no mention of xeon equivalents of the Q9000 series (i.e. my X3360). I'm assuming it too is 100 °C?

The other thing that pissed me off is that I saw no mention of the older 65nm cores.

I think that unclewebb was planning to ask them that. Anand and/or derek would probably have a better chance of finding out, however.

 

[LOUISSSSS]

SO WHATS THE TJMAX for the Q6600 g0? i'd like to set it in the 2.70 version of RealTemp