Wrong Tj. Max for Intel Xeon 45nm processors

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Floyd
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Wrong Tj. Max for Intel Xeon 45nm processors

Post by Floyd »

Hello, I know it can be solved with the "Adjust offsets" option but it would be great if the program detects this family correctly. These CPUs are very popular because they can be used in old socket 775 motherboards.

Comparison with AIDA64:
tjmax.png
Intel doc (page 19):
Intel® Xeon® Processors 5400 Quad-Core:
X5492, X5482, X5472, X5470, X5460, X5450 85 °C
Thanks for this awesome software!
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The Coolest
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Re: Wrong Tj. Max for Intel Xeon 45nm processors

Post by The Coolest »

I'm aware of this doc. It was a really long discussion and eventually I decided to keep TjMax at 100 for some models.
In some cases it will work and in others it may not. I suggest to simply apply the offset in your processors case.
Main rig:
AMD Ryzen 9 5950X (True Spirit 140 Direct) / Mobo: Asrock Fatal1ty X470 / EVO 970 500GB + WD Blue 250GB + HDD / GPU: Dell RX 570 4GB / Mem: 2x16GB DDR4-3200 G.Skill 32GTZKW TridentZ - 32GB total / PSU: Seasonic Prime Ultra Gold 650W
NAS:
Core i7 2600K 3.4GHz @ 4.3GHz (Scythe Mugen2) / Mobo: Biostar TP67XE / 2x Inland Pro 120GB + HDDs / GPU: ATi Mach64 VT2 / Mem: 4x4GB DDR3-1600 G.Skill 8GBXL RipJawsX - 16GB total / PSU: Seasonic S12II 620W.
Secondary rigs:
Core i3 7130U / MiniPC / SanDisk SDSSDP-128G / GPU: Intel HD 620 / Mem: 1x8GB DDR3L-1600
Xeon X3430 2.40GHz @ 3.06GHz or Core i3 540 3.06GHz @ 4.0GHz (Freezer 7 Pro) / Mobo: MSI H55M-ED55 / PNY CS1111 240GB / GPU: ATI FirePro V3800 / Mem: 4x2GB DDR3-1600 G.Skill 4GBRL RipJaws - 8GB total / PSU: Seasonic S12II 620W
AMD Phenom II X4 B93 / Mobo: ASUS M2A-VM / GPU: ATI Radeon Xpress X1250 / Crucial M4 120GB / Mem: 2x2GB DDR2-800 - 4GB total / PSU: Antec 380W.

Core Temp - Accurate temperature monitor for Intel's Core/Core 2 and AMD64 processors

Floyd
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Re: Wrong Tj. Max for Intel Xeon 45nm processors

Post by Floyd »

The Coolest wrote:I'm aware of this doc. It was a really long discussion and eventually I decided to keep TjMax at 100 for some models.
In some cases it will work and in others it may not. I suggest to simply apply the offset in your processors case.
That's ok, I respect your decision but I can confirm that the CPU throttles when it reaches 85ºC so that document is correct, at least with X54XX processors.

But, it would be great if you reflect the offset correction here:
tjmax_offset.png
I mean, if I set -15 (as I do) that box should say 85ºC instead of 100ºC. I'm asking for this because I browse several OC forums where members use your program and you can't never guess if a particular member adjusted the offset (watching their screenshots) or he simply has a bad cooling system. It's not a problem if the member uses AIDA64 or Speedfan because they detect the Tj. Max well, but most of them use Core Temp or RealTemp. In this last case it's easy to guess because it shows distance to Tj. Max below the temps.

Thanks!
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Re: Wrong Tj. Max for Intel Xeon 45nm processors

Post by The Coolest »

There is no way to 'detect' TjMax on Core 2 generation processors.
All these programs have an internal 'database' which they use for this.
The TjMax value was added into a separate register only with the introduction of the Nehalem architecture.

There are some technical aspects due to which making the change you request is probably more work than it's worth in practice.
I can understand why an owner of such a CPU would want it, but if you think about it, it's a 10 year old processor, which isn't that widespread anymore.
Main rig:
AMD Ryzen 9 5950X (True Spirit 140 Direct) / Mobo: Asrock Fatal1ty X470 / EVO 970 500GB + WD Blue 250GB + HDD / GPU: Dell RX 570 4GB / Mem: 2x16GB DDR4-3200 G.Skill 32GTZKW TridentZ - 32GB total / PSU: Seasonic Prime Ultra Gold 650W
NAS:
Core i7 2600K 3.4GHz @ 4.3GHz (Scythe Mugen2) / Mobo: Biostar TP67XE / 2x Inland Pro 120GB + HDDs / GPU: ATi Mach64 VT2 / Mem: 4x4GB DDR3-1600 G.Skill 8GBXL RipJawsX - 16GB total / PSU: Seasonic S12II 620W.
Secondary rigs:
Core i3 7130U / MiniPC / SanDisk SDSSDP-128G / GPU: Intel HD 620 / Mem: 1x8GB DDR3L-1600
Xeon X3430 2.40GHz @ 3.06GHz or Core i3 540 3.06GHz @ 4.0GHz (Freezer 7 Pro) / Mobo: MSI H55M-ED55 / PNY CS1111 240GB / GPU: ATI FirePro V3800 / Mem: 4x2GB DDR3-1600 G.Skill 4GBRL RipJaws - 8GB total / PSU: Seasonic S12II 620W
AMD Phenom II X4 B93 / Mobo: ASUS M2A-VM / GPU: ATI Radeon Xpress X1250 / Crucial M4 120GB / Mem: 2x2GB DDR2-800 - 4GB total / PSU: Antec 380W.

Core Temp - Accurate temperature monitor for Intel's Core/Core 2 and AMD64 processors

Floyd
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Re: Wrong Tj. Max for Intel Xeon 45nm processors

Post by Floyd »

The Coolest wrote: I can understand why an owner of such a CPU would want it, but if you think about it, it's a 10 year old processor, which isn't that widespread anymore.
Are you sure? :mrgreen:
xeon775.png
1212 pages, 1,538,148 views, last post today: http://www.overclock.net/f/5/intel-cpus

As an overclocker, you surely know that overclocking an Intel "k" processor is pretty easy and boring. It's "overclocking for the masses". Even today, overclocking enthusiasts are buying high performance 775 motherboards in order to play with these CPUs (my EP45-UD3P is still sold for more than $100-120 in ebay because of this).

Overclocking one of these processors above 4.5 GHz and let it stable is a challenge even for experienced overclockers. That's why, in 2017, we're still playing with these beauties. All OC forums have an active thread with this matter.

Kind regards.
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