I5 2500k

[Andrei23]

hey peeps, by how much would you say that an i5 2500k outperforms an x4 955 clock per clock?

[cadaveca]

Impossible to compare, because memory controller is in cpu.

[erocker]

i5 2500K Reviews:
http://www.techpowerup.com/reviews/I..._i5_2500K_GPU/
http://www.overclockersclub.com/revi..._corei5_2500k/
http://www.guru3d.com/article/core-i...-2600k-review/
http://www.techradar.com/reviews/pc-...-917570/review
http://www.anandtech.com/show/4083/t...i3-2100-tested

PII 955 x4 Reviews:
http://www.overclockersclub.com/reviews/phenom2_955/
http://www.legitreviews.com/article/980/1/
http://www.anandtech.com/show/2754
http://www.guru3d.com/article/amd-ph...r-review-test/

Read, compare, decide.

[3dsage]

Dont know how much it outperforms it by, by It will definately oc higher with lesser volts, less power consumption..A little more expensive but worth it IMO.
Reviews show it to be faster than a 920 core for core.

Im currently sitting with my 2500k @ 4.5GHZ with 1.27V stable as can be.. Maxed it out @ 4.8GHZ with 1.32 V.. Havent pushed higher but will it will definately bench 5GHZ NP.

[LifeOnMars]

Getting my i5 2500k and p8p67 tomorrow, I'm coming from a 1090T@4GHz so I'll share my thoughts on it tomorrow

[3dsage]

Originally Posted by LifeOnMars

Getting my i5 2500k and p8p67 tomorrow, I'm coming from a 1090T@4GHz so I'll share my thoughts on it tomorrow

Nice looking forward to your results... Seems like SB is getting no love on tpu

Ive owned tons of cpu including 920, 955 ,c2ds etc. There has been not other setup that ive owned before, that made 4.5GHZ OC so freakin easy..

Have fun with it

[LifeOnMars]

Originally Posted by 3dsage

Nice looking forward to your results... Seems like SB is getting no love on tpu

Ive owned tons of cpu including 920, 955 ,c2ds etc. There has been not other setup that ive owned before, that made 4.5GHZ OC so freakin easy..

Have fun with it

I can understand the lack of people going for the platform but TBH I only run one wd 640 black at the moment and the most I'll stretch to is an added ssd for a boot/os drive in the future, so the degradation is not really an issue with me. Once I have used the DVD drive to install windows it will get disconnected and thats it. I'm hopefully aiming for a nice steady 4ghz oc at stock volts but we will see how it goes Better bandwidth from my memory, lower power consumption and more frames....um, yes please

[3dsage]

Originally Posted by LifeOnMars

I can understand the lack of people going for the platform but TBH I only run one wd 640 black at the moment and the most I'll stretch to is an added ssd for a boot/os drive in the future, so the degradation is not really an issue with me. Once I have used the DVD drive to install windows it will get disconnected and thats it. I'm hopefully aiming for a nice steady 4ghz oc at stock volts but we will see how it goes Better bandwidth from my memory, lower power consumption and more frames....um, yes please

Defintaley understandable, but its only ports 2-5 on Sata3 ports, otherwise the rest are good.
My P67 has 10 SATA ports, so I have boot drive and dvd drive on Port 0-1, then my storage drives are on Sata2 ports which I have 5 to spare. Not a big deal IMO.


Trust me though 4GHZ is just a warm up, I think 4.5GHZ is what 4GHZ was for previous processors. I mean the odds are it will bench 5GHZ NP

This thing blows any cpu out there besides 980x etc.
But core for core the fastest processor no doubt

Im attacking this thing over the weekend and see what I can squeeze out of it...

P.S forgot to mention temps, the temps are the greatest...load never passes high 50's on air at 4.5ghz ...lol

[Undead46]

Don't forget that you're giving up Hyper Threading if you get the 2500k instead of the 2600k.

[LifeOnMars]

Originally Posted by Undead46

Don't forget that you're giving up Hyper Threading if you get the 2500k instead of the 2600k.

I'm not worried, it's a nice upgrade either way Any help or links to sandy bridge overclocking methods would be very much appreciated guys.

[3dsage]

Check out XS, for the thread on your particular motherboard.. There is also a 4.5 to 5GHZ stable club, and there is plenty of inspiration.

Low volts, low temps, high clocks FTW..

[slyfox2151]

Originally Posted by cadaveca

Impossible to compare, because memory controller is in cpu.

???? i sware AMD have had there memory controller on the CPU since 2006 / Athlons?


how are they not compare able?

[BinaryMage]

http://www.overclockersclub.com/revi...i5_2500k/5.htm
Overclockers Club always has useful reviews. They pushed the i5 2500K to 4.7 GHz. (interestingly, actually further than the i7 2600K)
http://www.bit-tech.net/hardware/cpu...ore-i5-2500k/2
This is also useful; it explains what all the BIOS overclocking settings do.

[Paulieg]

These were my results with a 2500k that I just sold. Getting ready to test a 2600K now. No worries about degradation either, since almost all manufacturers are offering advance RMA with free shipping. Problem solved. The only issue I have is the ability to fine tune a cpu and memory overclock with BCLK. You never know what you could truly squeeze out of either.

http://www.techpowerup.com/forums/sh...d.php?t=139180

[Zen_]

I upgraded from a 955 to 2500k. Not that scientific but in BC2 and synthetic benchmarks (3DMark, Super Pi etc.) it is significantly better and overclocks 800 MHz more than the 955 with a smaller heatsink.

[LifeOnMars]

Thats a nice thread thanks Paulie. The fastest CPU i will have owned in my life

[random]

Hey guys,

I currently have my i5 at 45x multi / 13000vcore / 1.100 vtt qpi

when I put a 47x+ multi my computer boots but the clocks reset automatically, is this because my PSU doesn't have enough power? It's the same when I try to overclock my RAM, currently its at 1333mhz when I put it to 1600mhz all the clocks reset, it's bugging the hell outta me.

EDIT: RAM is okay now for some reason after I updated my BIOS to F6, still can't reach 5ghz though.

[LifeOnMars]

Hey Randomflip what voltage are you running your memory at mate? Got my rig all setup today, I'm at 4.5GHz like yourself but I've only just set my memory to 1600 @ 1.6v but keep seeing stuff about "it's bad to run memory over 1.5v with sandy bridge" Is that true? Also is there any software out there at the mo that can give me accurate figures on current voltages?

[random]

Originally Posted by LifeOnMars

Hey Randomflip what voltage are you running your memory at mate? Got my rig all setup today, I'm at 4.5GHz like yourself but I've only just set my memory to 1600 @ 1.6v but keep seeing stuff about "it's bad to run memory over 1.5v with sandy bridge" Is that true? Also is there any software out there at the mo that can give me accurate figures on current voltages?

I followed a guide to get my clocks and they set a standard of 1.65 for their ram as well so I assume its alright. But yeah hopefully someone can confirm this. Uhh to monitor voltage I'm not too sure, I'd imagine you'd be best off to use whatever came with your mobo else you can try Lavasys EVEREST but I think that its been discontinued.


EDIT:WAIT I JUST CHECKED, I remember why my comp wouldn't boot at 1600mhz before it was because I changed the voltage to 1.65.. DONT TO IT just to be safe, left mine on auto and shows as 1.5 at BIOS.

EDIT2: I set it to 1.5volts and I can boot into windows and play games just fine on 1600mhz, patriot RAM has been really good to me.

Sorry bout the typing, using a really non responsive wireless keyboard atm

[Lethalrise750]

The recommended value doesn't mean the max safe. The recommended for LGA 1366 was like 1.525 on the whitepapers but 1.65 was perfectly safe. From what I've seen up to 1.65 is fine and even 1.67 so I wouldn't worry as long as you're at or below 1.65.

I've been using AIDA64 for my Voltage readings and they seem to be quite accurate.

[LifeOnMars]

Originally Posted by Lethalrise750

The recommended value doesn't mean the max safe. The recommended for LGA 1366 was like 1.525 on the whitepapers but 1.65 was perfectly safe. From what I've seen up to 1.65 is fine and even 1.67 so I wouldn't worry as long as you're at or below 1.65.

I've been using AIDA64 for my Voltage readings and they seem to be quite accurate.

Thanks alot for your useful post. I have been using hw monitor from the sandy bridge reviewers kit but will try AIDA. I'm currently at 45x100bclk and have noticed that under heavy heavy load like the cpu test in 3d mark 06 that i get voltage spikes of 1.38, most of the time it remains under 1.35v. i have load line enabled in the bios. I'm seeing people who are running 4.5 with 1.32volts. Is there a way to disable Load line calibration in my bios or get those max volts down at the same clock? Thanks

[Paulieg]

Originally Posted by LifeOnMars

Thanks alot for your useful post. I have been using hw monitor from the sandy bridge reviewers kit but will try AIDA. I'm currently at 45x100bclk and have noticed that under heavy heavy load like the cpu test in 3d mark 06 that i get voltage spikes of 1.38, most of the time it remains under 1.35v. i have load line enabled in the bios. I'm seeing people who are running 4.5 with 1.32volts. Is there a way to disable Load line calibration in my bios or get those max volts down at the same clock? Thanks

You should find loadline calibration where your overclocking option are in the bios. Maybe instead of disabling loadline, you should just decrease your vcore. Loadline helps prevent your vcore from dropping too low under load.

[LifeOnMars]

Originally Posted by Paulieg

You should find loadline calibration where your overclocking option are in the bios. Maybe instead of disabling loadline, you should just decrease your vcore. Loadline helps prevent your vcore from dropping to low under load.

That's the thing. I have found it but no option to disable that I can see. Just Auto,Regular,Medium, High, Ultra High and Extreme. I have it set to regular at the moment

EDIT - Just read your edited post Paulie and my LLC actually powers up to what it needs rather than down.

[Lethalrise750]

Originally Posted by LifeOnMars

Thanks alot for your useful post. I have been using hw monitor from the sandy bridge reviewers kit but will try AIDA. I'm currently at 45x100bclk and have noticed that under heavy heavy load like the cpu test in 3d mark 06 that i get voltage spikes of 1.38, most of the time it remains under 1.35v. i have load line enabled in the bios. I'm seeing people who are running 4.5 with 1.32volts. Is there a way to disable Load line calibration in my bios or get those max volts down at the same clock? Thanks

To disable it, change it from auto to Regular in bios and it will disable it. If you're using a fixed voltage(aka Manual and not Offset) try setting it to High or Ultra High and it should give you near the exact voltage you put into bios.

[LifeOnMars]

Originally Posted by Lethalrise750

To disable it, change it from auto to Regular in bios and it will disable it. If you're using a fixed voltage(aka Manual and not Offset) try setting it to High or Ultra High and it should give you near the exact voltage you put into bios.

Ooh ok, gonna try that now. Thankyou and will report back in a bit....I am currently using offset rather than manual so will have to change that, thanks.