i5 3570K - Quick Question

[mswbull]

Hi all,

First time poster, long time reader

After six years of my E6700ES I decided it was finally time to upgrade my system. As a result I placed the following order on Sunday, which should hopefully arrive today:

• MSI Z77A-GD65 Intel Z77
• Intel Core i5 3570K + Noctua NH-D14
• Samsung Green 16GB DDR3 PC3-12800C11 1600MHz 30nm
• Sapphire HD 7950 OC 3072MB

I haven't been in the overclocking scene since the Conroe days, therefore I have a couple of "quick fire" questions that I was hoping someone could answer:

1. Default voltage of the i5 3570K (I can't find reliable information)?
2. Recommended 24x7 maximum voltage for the i5 3570K?
3. Recommended 24x7 maximum temperature for the i5 3570K?

I have been following the other threads, but there is a lot of information, some of which is conflicting (to be expected with a new chip), however I want to make sure I know my limits before starting my first OC in nearly six years

Thanks in advance!

Matt.

 

[the_director]

I would also appreciate this info. Moving from a Q6600 and 3570k arriving in the next hour.

 

[scritchyrat]

Sign me up for this too. I've got some new RAM and a 3570k (and more importantly, Haribo!!) arriving today and I'd like to see some definitive guild for Ivy like there is for Sandy

 

[Krono5]

1. Default voltage of the i5 3570K (I can't find reliable information)?
2. Recommended 24x7 maximum voltage for the i5 3570K?
3. Recommended 24x7 maximum temperature for the i5 3570K?

1: Around 1-1.1v. Varies per individual chip.
2: You probably won't need to worry about this due to temps. However 1.3-1.35v seems to be banded about a lot by knowledgable people and is good until there's more concrete numbers.
3: 70-75c in p95 as a conservative estimate until more is known. However I personally wouldn't go over 85c absolute maximum.

Thats only my best guesses from information available and you shouldn't go too far until more is known imho.

 

[mswbull]

1: Around 1-1.1v. Varies per individual chip.
2: You probably won't need to worry about this due to temps. However 1.3-1.35v seems to be banded about a lot by knowledgable people and is good until there's more concrete numbers.
3: 70-75c in p95 as a conservative estimate until more is known. However I personally wouldn't go over 85c absolute maximum.

Thats only my best guesses from information available and you shouldn't go too far until more is known imho.

Perfect, thanks for the information! I'll keep an eye on the other 3570K OC thread to see how people are getting on.

One additional question, what's the verdict on the Intel Speed Step stuff (if it's even still called that). Do people leave it enabled, or disabled (for maximum performance)? Any advantages or disadvantages I should know about?

Thanks again.

Matt.

 

[Krono5]

That provides some good information.

 

[mswbull]

Thanks for the information. I've just finished building my system and am currently running at 4.5GHz with 1.300V.

Prime has been running for about 30mins. Initially temps sat around 70C, however at the point where the tests switch to "using FFT length 8K" I saw an immediate jump to 80C (which was a little concerning). However the system did remain stable.

 

[PCZ]

The 8k and 10k tests are the small fft's.
These will generate the most heat.
If you want to quickly test for maximum heat/stress select small fft's only.
The tests are quite small and mostly fit in the 2nd level cache so they execute very quickly and are a good test of the CPU core and cache,

The larger fft's are good for testing the RAM.
Blend if left to run long enough will cycle through all the fft sizes giving your PC a good workout,