2600K @ 5.5Ghz. Super PI 1M in 6.786s

[smakme7757]

Can you show me one person that has done 5 ghz at 1.3 or even 1.35 ?

I'd like to see that too.

At the moment i'm happy with my CPU running at 4.5Ghz - 1.265v. That seems like a resonable overclock without gong too insane on the voltage.

Temps:

Idle: 30c (Hottest core)
Load: 50c (Hottesst core)

 

[Gillbot]

As long as you don't need to RMA the CPU six months down the line.

Which would be unethical since overclocking voids the warranty anyway.

Now I can't wait for someone to link this thread over to the other where everyone is expecting a 5GHz clock out of the box.

 

[smakme7757]

Which would be unethical since overclocking voids the warranty anyway.

Now I can't wait for someone to link this thread over to the other where everyone is expecting a 5GHz clock out of the box.

I think if you have a decent motherboard and put enough volts through the chip a 2600k should reach 5Ghz. most people who don't reach it just don't want to break their chip, and righty so.

As always though you can't buy a 3.4Ghz chip with an expectation of having a 100% chance of reaching 5Ghz.

 

[deimos3428]

Pi is not a prime number

Now you're just being irrational.

 

[smakme7757]

Pi is not a prime number

It is possible to get a PI-Prime, which is a prime number within the decimal of pi :wub:

 

[Beace]

Smakme, what kind of cooling do you use to keep the cores at such low temp for your 5.5 GHz OC?

 

[smakme7757]

Smakme, what kind of cooling do you use to keep the cores at such low temp? Some high tech water solution?

I wouldn't consider it high end, but my CPU and GPU are watercooled. I'm just using commercial products: XSPC and EK parts.

Here are some pics i took if you're interested.

It cost a bit of money, but this is my passion, so every few years i usually upgrade my PC (Previous system was running a Q9450 and DDR2 ram). Having been a student i have never really built myself such a nice system before. Although there are nicer systems out there; this is my passion and a lot of hard work went into the build and i'm extremely happy with how it turned out.

 

[Cogman]

Now you're just being irrational.

Just so long as I'm not imagining things.

 

[nyker96]

Pi is not a prime number

yes it is if you round it!! :]

 

[Gillbot]

I think if you have a decent motherboard and put enough volts through the chip a 2600k should reach 5Ghz. most people who don't reach it just don't want to break their chip, and righty so.

As always though you can't buy a 3.4Ghz chip with an expectation of having a 100% chance of reaching 5Ghz.

and THAT is all I want everyone to be aware of. Too many people blindly EXPECT a certain overclock speed after reading a handful of reviews online.

 

[StinkyPinky]

I wouldn't consider it high end, but my CPU and GPU are watercooled. I'm just using commercial products: XSPC and EK parts.

Here are some pics i took if you're interested.

It cost a bit of money, but this is my passion, so every few years i usually upgrade my PC (Previous system was running a Q9450 and DDR2 ram). Having been a student i have never really built myself such a nice system before. Although there are nicer systems out there; this is my passion and a lot of hard work went into the build and i'm extremely happy with how it turned out.

Your cable management seems outstanding. Sadly that's one art I've never really mastered.

 

[PlasmaBomb]

That's a great looking system smakme :thumsup:

 

[smakme7757]

Thanks guys, i appreciate the kind words .

 

[martixy]

Pi is transcendental.
Though figuring out primes actually does have tons of uses on its own.
However lots of people and institutions with million dollar equipment are way ahead in that department, so it's not like you could make a dent even if you tried.

 

[Schmide]

Should finish the thread before I post. IBIB

 

[ilkhan]

Are you kidding?

Most chips I've seen near 5GHz are up at ~1.50V, and as people have been saying 5GHz isn't a given.

yup.
My 2500K wasn't [quite, it was close] stable at 4.6 on 1.35v. I went straight to 1.4v (I'll keep playing with it, later) to get it stable. Nice temps, but the voltage really is going through the roof at high clocks.

5.5 is pretty nuts, however. My initial goal was 4.0. Then 4.6. Then 5.0. Then back to 4.6. Goal obtained. Actually goal was twice my Q8200, so I should see if 4.7 is stable.

 

[HyperMatrix]

Are you kidding?

Most chips I've seen near 5GHz are up at ~1.50V, and as people have been saying 5GHz isn't a given.

I'm running 5.2ghz on 1.45v. Any more and you'd need to go higher. 1.4 was too low for 5.0.

There is no way on earth to pull 5ghz up from 3.4ghz with 1.3 or 1.35v. 1.35 will net you around 4.5ghz.

I could push mine higher and keep it stable if i had a better cooling system. Water-cooled CPU with 6x 75cfm 120mm fans and a large 200mm fan. under full stress test at 5.2ghz after half an hour it sits at 61 Celsius. This is with a side-open case and has easier access to air to cool the radiator. So it's very stable and very cool. But this is as high as I'd like to go as it will run perfectly and only gets as hot as a stock chip on the stock intel fan. Even though it's been supercharged.

I'm loving this chip. Running it with 16gb of 1600mhz 7-8-7-20 ddr3 memory and an ocz revodrive. It's like sex. For geeks. Haha. Cheers guys.

Also...beyond 4.5ghz or so, my asus p8p67 eve board takes 2 minutes to post. Apparently a common issue for some mobo's. So keep that in mind and research a good mobo if you're looking to over clock more than 1ghz.

Happy oc'ing guys.

 

[Morg.]

Well .. 5Ghz isn't a given, but the OP gets quite low temps @ 1.5V (1.584 here) ... with a single loop (or so it seems).

If you expect 5 Ghz without having to overvolt at any point, yes you should quit drugs.
If you expect 5 Ghz and are ready to go to 1.5V, chances are you'll almost always get it - and I call that a given

 

[paperwastage]

1.3 if you're lucky, but most people have to go to 1.35.

lol

3.3ghz - 1.2v - stock
3.3-4.0 ~ 1.2v
4.0-4.6 ~ 1.3v <--- good point to stop if you're risky adverse like me
4.6-4.8 ~ 1.4v
4.8-5.0 ~ 1.5v

rough estimates of voltages needed. if you can get 5.0ghz under 1.42V, then it's a relatively good chip

 

[NFarnzy]

I just put a SB together this last weekend.

gigabyte UD4

4.4ghz @ 1.28v

I am enjoying my new system too!

 

[scrubman]

With Japan going down system upgrades are going to be costing a lot more! Better get your new tech asap!

 

[Dadofamunky]

Thanks guys, i appreciate the kind words .

Looks really freaking nice. I bet Aigomorla wouldn't even be ashamed to admit it.

 

[Morg.]

With Japan going down system upgrades are going to be costing a lot more! Better get your new tech asap!

1. Japan is not going down
2. Japan is not Korea / malaysia / dresden

 

[Ado6]

Mannn.... And here I thought getting to 5.1 was a good accomplishment with my 2500K and you're sitting at 5.5 lol. Great job on the Overclock! Oh and nice looking rig! :thumbsup:.

Out of curiosity what kind of voltage does your chip need to be stable at 5.0 or 5.1? Trying to get a rough estimate to what mine will need for 5.2/5.3 since I'm just on air cooling. I got a stable 5.1 with 1.38 set in bios, but with llc on extreme HW Monitor Pro was showing that it got to 1.4 on the vcore.

 

[Morg.]

Mannn.... And here I thought getting to 5.1 was a good accomplishment with my 2500K and you're sitting at 5.5 lol. Great job on the Overclock! Oh and nice looking rig! :thumbsup:.

Out of curiosity what kind of voltage does your chip need to be stable at 5.0 or 5.1? Trying to get a rough estimate to what mine will need for 5.2/5.3 since I'm just on air cooling. I got a stable 5.1 with 1.38 set in bios, but with llc on extreme HW Monitor Pro was showing that it got to 1.4 on the vcore.

You're doing it all wrong.

Here's how you OC a CPU :

Pick a maximum temperature (if you know of a specific temp where the CPU gets more unstable, that's easy) between 0 and 90 °C (chips survive it) under prime95 load.

Add the cooling you want.

Up the voltage, run prime 95, check temp after 10 minutes or so (that's already far beyond real temps).
Up it some more till you reach the max temp you picked.

Now for the actual OC'ing.

Take a big first step, based on info you read on the interwebz, like 'some dude got 5.5 ghz out of his i7-2600' --> test yours @ 5.5 directly.

Then, play around to find the instability wall (it's usually not that far from there anyway).

Set your clocks just behind that wall.

Now to set the vCore correctly.

Drop your vCore very slowly (smallest step you get on your bios) and do a stability test each drop.

Once you've reached the minimum vCore for that frequency you got @ the instability wall, you're done and can go in final testing, which should take a retarded amount of time and various tests to make sure everything is fine.


So no use for voltage estimates and other useless stuff.
(Also, if you like your CPU, you will prefer a core temp around 70 - 80 instead of 90 max / and if you're completely rainbow, you'll go to 50 and say "whew that's hot").

Also, take extra care of the heat AROUND the CPU, as many tower coolers do fine on the chip but nothing around, which gets the area surrounding your CPU in the neighborhood of your CPU max temp --> bad (add small fan, do stuff, dance around).

Aaand .. sometimes your *bridge likes to heat a lot too, don't forget about it.

And one last thing, there are physical barriers to how fast your CPU will go, even if you can put a bajillion volts as vCore, there is a limit, and that is why we find that limit before finding the lowest vCore for that limit.