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2500k vs 2600k temps

R

Rvenger

Elite Member <br> Super Moderator <br> Video Cards
I just purchased a 2600k and sold my 2500k rig. I put the system back together and noticed the temps are a good 8-10c higher at the same speeds.

Does the 2600k naturally run a bit hotter?


My Idle temps on my 2500k were below 30c and never hit above 60c @ 4.3ghz on 1.28v

The 2600k idled in the low 30s and peaked out at about 65c @ 1.22v. It was running at 4.2ghz at the time.

Both systems were using a Hyper 212+ cooler.


Thanks
 
I was under the impression that hyperthreading caused slightly higher temps. Perhaps someone else with experience can chime in.
 
Bill Brasky said:
I was under the impression that hyperthreading caused slightly higher temps. Perhaps someone else with experience can chime in.
Click to expand...

Almost every account of users testing that theory on 1156 and 1366 cpu's noted something close to that. The i7 920 I7 860.
 
Maybe if I disable HT then that would give me an idea if its hyperthreading thats causing temp spikes.
 
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Disabling HT on my 2600K results in 3 degrees C cooler at max temp during load at 4.8Ghz. I'm not just guessing, I measured at 12 minutes into Prime95 large FFT run.

More significantly, though, disabling HT allows my 2600K to bench stable (Prime95 - 0 errors) at 4.8Ghz and 1.41v. With HT enabled, max stable is 4.6Ghz. I don't have any interest in going higher voltage than 1.41 so I can't say more. I'm not suggesting you disable HT just to get higher clocks, because I'm not convinced the tradeoff is worth it.

It is small section of silicon to disable, so shouldn't account for a gigantic temperature spike.
 
mrjoltcola said:
Disabling HT on my 2600K results in 3 degrees C cooler at max temp during load at 4.8Ghz. I'm not just guessing, I measured at 12 minutes into Prime95 large FFT run.
Click to expand...

Yeah, but 3C? Doesn't really seem worth it IMO, unless it's simply a feature you don't use. And if that's the case, then why get a 2600K?
 
Bill Brasky said:
Yeah, but 3C? Doesn't really seem worth it IMO, unless it's simply a feature you don't use. And if that's the case, then why get a 2600K?
Click to expand...

Is what worth what?

I performed the test to answer his question; I then clarified that I didn't recommend disabling it.
 
To be honest, I've profiled with and without HT, and it is a hard call on my apps. Since Intel has some really smart people (albeit maybe under the thumb of their marketing dept and their investors) I figure that HTT is worth keeping around unless you find a particular reason not to. With Netburst, there were reasons. Not so sure with Nehalem.
 
2600k has 2mb more cache as well. May count for 1-2c more heat generation
 
I wouldn't worry too much about temperatures, the 2600K is a slightly higher clocked CPU, it has hyperthreading and more cache, so it's going to generate a little more heat.

Even with the temperature increase you're still below any dangerous temperature. My 2600K @ 4Ghz idles at average 25c per core and loads at average 45c per core. I'm also underwater, so considering you're on air it will be higher than that and it seems about right.
 
mrjoltcola said:
Is what worth what?

I performed the test to answer his question; I then clarified that I didn't recommend disabling it.
Click to expand...

I didn't mean for that comment to pointed at you, but was just thinking aloud, I guess. I also got misconstrued the OP's question to mean, "I'm thinking of disabling HT to get a better overclock..."

Basically a communication fail on my part. 😀
 
Bill Brasky said:
I didn't mean for that comment to pointed at you, but was just thinking aloud, I guess. I also got misconstrued the OP's question to mean, "I'm thinking of disabling HT to get a better overclock..."

Basically a communication fail on my part. 😀
Click to expand...

Oh, ok! No, it was a fail on both parts. 🙂 No worries.

Dealing with trolls on other forums keeps me too defensive, so much that sometimes I misread the good guys.

That is what I like about Anandtech forums, more good guys & less trolls here than other hardware forums. Cheers!
 
Ok, I finally figured out my max stable overclock without tweaking the voltage too much. I am not going to push this chip to the limit because it seems to be a similar overclocker to my 2500k. (And to think that a Costa Rica chip would of been a better overclocker)

I have it at stock voltage with LLC enabled and it seems to be stable at 4.4ghz. Noticed that Gigabyte overclocks the BCLK by 1mhz default 🙄.

I reseated my CM Hyper 212+ twice and I went out and purchased a new tube of Ceramique. The max temps on my 2500k never exceeded 60c. My 2600k after about 30 minutes of Prime 95 and Intel Burn Test were hitting 74c. It seems to me that the Hyper 212+ performs better on the 2500k than the 2600k. Im sure the thermal compound has to "cure" a bit so it may drop a couple degrees.

Anyone with the same HSF having similar temps?
 
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