Find out the Max Case Temperature and Max Power draw of your CPU.

Download AMD64 TCaseMax v1.19.

This is a new type of program, which checks AMD64 CPUs for their maximum rated case temp or TCaseMax and reports the TDP which corresponds to the processor in question.
On most AMD processors TCaseMax and TDP values are constant, and depend on CPU type and model, but on the E Revision chips, both this values and the default voltage are variable.
These are the chips that have variable values:
Athlon64 (Venice, San Diego)
Athlon64 FX (San Diego)
Athlon64 X2 (Manchester, Toledo)
All Rev E Opterons and Dual Core Opterons
What this all means is this: On 90nm manufacturing process, the power leakage of transistors on individual processors differs greatly, this is why AMD implemented TCaseMax. Each CPU has a different TDP rating, here's how it works:
A program reads the TCaseMax value off the CPU, then depending on the processor (CPU type like A64, Opteron;CPU Rating like 3500+, 146) it finds the processor's Thermal Profile (If you download the "AMD Opteron™ Processor Power and Thermal Data Sheet" and look at pages 10-11 you'll see the different thermal profiles). When the thermal profile is determined, the program finds the TDP rating that corresponds to the CPU's TCaseMax value.
So in a few words, the higher the TCaseMax, the higher the TDP of a processor will be (the transistor leakage is higher), so the processor will run hotter. Several people have reported that the Opterons rated at 71C TCaseMax were pretty hot. On the other side these processors will be able to reach higher clock speeds.
That is why we see that on average processors with higher TCaseMax can usually reach higher CPU speeds when overclocked.
Every CPU type (A64, FX, X2, Opteron, DC Opteron) has a different thermal profile, that is why you see that on an FX a TCaseMax rating can be "only" 57C and it'll overclock way better than an A64 with a 57C TCaseMax rating. That is because at 57C TCaseMax, an FX has a TDP of 77W while the A64 has a TDP of 44W.

If you want to post a screenshot press Alt+PrintScreen and paste it in paint and save in PNG (if you have WinXP or Win2003). Pictures do speak a 1k words Or at least click "Copy to clipboard" button and paste the text here.
*Note: The "Create stats file" button doesn't work yet, but it will work soon, where it'll create a file that you'll upload to a website and it'll add you to a DB of chips and there will be statistics of different CPUs.


What's new:

Version 1.19
Fixed a bug with program's GUI.
Fixed a potential problem with Opterons from big OEMs TDP/TCM not reported.

Version 1.18
Fixed a bug with reporting TDP on newer X2 4200+ CPUs.
Fixed a bug where CnQ was not supported and VCore field is empty, the field wouldn't be grayed out.

Version 1.17
Fixed a bug with incorrectly showing Dual Core FX PR number.
49C TCM chips will now be reported again, no "This CPU does not support TCaseMax feature." messages anymore.

Version 1.16
Fixed a bug with newer HE DC Opterons not showing the proper TDP.
Fixed a bug with the naming of HE and EE Opterons.

Version 1.15
49C TCaseMax is not used anymore, this means that for any CPU which returns 49C TCM (like the new Dual Core Opterons), the program will report "This CPU does not support TCaseMax feature."
Extended the 'D' Thermal Profile, as some chips using this profile have reported higher TCMs than the highest TCM specified in the profile.

Version 1.14
Serios bug fixed. Program would not show information about any processor that was an E revision CPU.

Version 1.13
Athlon 64 FX thermal profile fixed.

Version 1.12
Renamed to "AMD64 TCaseMax".
Added support for FX-60 and Dual Core CPUs with 1 core disabled.
Several bugs fixed.

Version 1.11
Several bugs fixed.

Version 1.10
Added TDP - Will now report the TDP (Thermal Design Power, or in other words the maximum power the CPU draws at stock speed/voltage)

Version 1.04
First version with all new AMD CPUs supported.

Regarding the stats... I decided to remove them as they are practically useless right now. I will hopefully put a up a page where you will be able to upload your results, and then compare your results to a database of other chips.

This is not an AMD Athlon64 processor, this program will not continue



I was half expecting "illegal instruction" or some such

4400+ Toledo = 55

3000+ Venice also=55

Two DH8-E3 Venice Athlon 64s, both have TCaseMax 55 degrees. Pretty low I think.

2700 MHz @ 1.65V /w XP-90C and medium speed fan

Standard CPUID: Family: F, Model: F, Stepping: 0
Extended CPUID: Family: F, Model: 1F, Stepping: 0

CPU Information:
Processor: AMD Athlon 64 3200+ (Winchester)
Revision: DH8-D0
Platform: Socket 939
Maximum Case temprature = 65C°

Standard CPUID: Family: F, Model: 4, Stepping: A
Extended CPUID: Family: F, Model: 4, Stepping: A

CPU Information:
Processor: AMD Athlon 64 3000+ (ClawHammer)
Revision: SH7-CG
Platform: Socket 754
Function failed, can't show maximum core temprature.


I'll test the Turion when I get a chance.

DH8-E3 s939 Venice 3200 = 55
interesting little app.

So what exactly is this temp now?? Is this the maximum temperature the CPU can be at or the Case?

Its the maximum temprature the CPU is rated for.
Like this table taken from here:
T_Case
A = variable
I = 63
K = 65
M = 67
O = 69
P = 70
X = 95
Y = 100
Max Case Temperature

On another note, we've gotten readings of several Venices reporting 57C and one reporting 59C.
I don't know if its any indication, but I'm guessing that the higher the max temp the higher are the chance of that chip hitting higher speeds when OCing.

Standard CPUID: Family: F, Model: F, Stepping: 0
Extended CPUID: Family: F, Model: 1F, Stepping: 0

CPU Information:
Processor: AMD Athlon 64 3200+ (Winchester)
Revision: DH8-D0
Platform: Socket 939
Maximum Case Temperature = 65C°

mine says 55

The Coolest said:

Its the maximum temprature the CPU is rated for.
Like this table taken from here:
T_Case
A = variable
I = 63
K = 65
M = 67
O = 69
P = 70
X = 95
Y = 100
Max Case Temperature

On another note, we've gotten readings of several Venices reporting 57C and one reporting 59C.
I don't know if its any indication, but I'm guessing that the higher the max temp the higher are the chance of that chip hitting higher speeds when OCing.

Click to expand...

Excellent little program and certainly not unreasonable to suggest the link between case temperature and overclockability within the same family stepping.

My 3000+ Venice = 57º

Edit: Hey Milkman, Nice to see you finally got your venice and it looks like it's doing pretty good.

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Mine read DH8-DO Winchester, Max temp 65.

San Deigo 3700+ - Reversion SH8-E4 - Max Temp. 59C

3000+ Winnie 65!

I got the can't show max temp, See sig for PC.

PLEASE ONLY POST RESULTS FOR THOSE CPUs:

Athlon 64 "Venice", DH8-E3
Athlon 64 "Venice", DH8-E6
Athlon 64 "San Diego", SH8-E4
Athlon 64 FX "San Diego", SH8-E4
Athlon 64 X2 "Manchester", BH-E4
Athlon 64 X2 "Toledo", JH-E6

Other CPUs are not interesting because they have it fixed. For example all Winchester cores will report 65 degrees, all Semprons E3 / E6 will report 69 degrees ect.

my X2 4200+