CPU temp questions

1. The 9900 is an old tech cooler by the new standards. The new HDT coolers like the Core Contact Freezer are the new kings of the hill.

2. Try reducing vcore and/or speed.

^ I was talking about the 120mm Core Contact btw

Here are the links:
CCF 120mm: http://www.newegg.com/Product/Prod [...] 6835207004
$20 after MIR

CCF LGA1366 bracket:
http://www.newegg.com/Product/Prod [...] 6835207005
$5 after MIR

That heat sink has the best price vs performance imo. If you want more cooling performance add a Scythe Slipstream 110 CFM fan, which should drop temps up to 7C.

Top heat sink review site: http://www.frostytech.com/top5heatsinks.cfm
The Core Contact is ranked #4.

csflame4432 ,

Where did you read this? I hope it wasn't here at Tom's. I'd really like to know.

You've now posted this on 2 threads ... I seriously hope there aren't any others.

Intel has no such "max temp 85c" specification for any Core i7 variant. Whatever you read was based upon speculation rather than specification. Just to keep our readers from becoming more confused than they already are, I am emphatically stating, for the record, that this information is wrong and misleading.

No disrespect intended, but please, do not spread FUD! It just takes a few forum members to grab that ball and run with it, which will multiply like cockroaches, making my work here at Tom's much more difficult, having to also stomp out yet another misconception.

I have already addressed this issue in your previous thread: Overclocking i7 950 - http://www.tomshardware.com/forum/ [...] g#t1826103

Once again, my objective is to assure that enthusiasts understand Intel's specifications, standards and test methods, so they can better decide how to apply and manage their overclocking options.

From Intel's Processor Spec Finder - http://processorfinder.intel.com/L [...] SearchKey=

All Core i7 9xx variants:

Vcore Max 1.375v
Tcase Max (CPU temperature) 68c
Tjunction (Core temperature) 73c

The Thermal Specification shown in Intel's Processor Spec Finder is Tcase Max (CPU) not Tjunction (Core), which is a very common misconception among most enthusiasts. Since there's a 5c gradient between the CPU sensor and the Core sensors, (shown in the following Intel document) - http://arxiv.org/ftp/arxiv/papers/0709/0709.1861.pdf - just add 5c to the value shown in the Spec Finder to determine the corresponding Core temperature, which is 73c for all Core i7 9xx variants.

Intel's second and frequently misunderstood Thermal Specification, Tjunction Max, (100c for all Core i7 9xx variants) applies to overtemp protection such as Throttle and Shutdown, so you don't toast your transistors. As such, any i7 9xx Core temperatures which exceed 73c should be considered "overtemp". Further, when specifications are exceeded, then processor degradation becomes a concern, which is explained in the following AnandTech article - http://anandtech.com/cpuchipsets/i [...] i=3251&p=6

Comp

Actually, this is well worth my time, because down the road, I don't want to be clicking around the forums chasing down dozens of "OK to run i7 9xx at 85c" threads. Since processor temperature is such an unnecessarily complex topic, unless Intel re-words their specifications so they're clear to everyone, and includes a simple spec sheet in the retail box, there will always be newcomers who don't understand, especially as very few read my Guide or know where to find Intel's specifications.

I did look at the megahelms, but I like the HDT ones better.

Yes it was at another forum

Here we go, I found it

http://www.xtremesystems.org/forum [...] p?t=228788

Thank you very much for finding that thread. I just read through it, and it has some very bad advice. The member in question thinks that the CPU temperature sensor is still the old thermocouple-in-the-socket touching the underside of the CPU, which hasn't been the case for many years since before single cores became dinosaurs. He doesn't understand that the CPU temperature sensor is integrated into the processor package substrate layers, and clearly doesn't understand Intel's specifications.

Thanks again.

I'm a member there, so I'll clear up those misconceptions ASAP.

You're very welcome.