Sign in with
Sign up | Sign in
Your question
Solved

AHHHH Can't get Intel 2700k stable at 4.8Ghz!!

Last response: in Overclocking
Share
November 24, 2011 5:56:44 AM

Hi Everybody,

I really need the group's help. I'm a newbie at overcloking and I just can't get my 2700k to be extremely stable at 4.8! I know people are talking about 5.0 Ghz+. But all I'm asking for is just 4.8Ghz (extremely stable)!

Ok, so here's what I'm running:

CPU = i7 2700k (Retail, Costa Rica)
MB = ASUS Maximus IV Extreme -Z
RAM = CORSAIR Vengeance 32GB (4 x 8GB) DDR3 1866 CMZ32GX3M4X1866C10
PSU = Corsair Professional Series Gold 850 (AX850)
HD = OCZ RevoDrive 3 X 2 240GB
COOLING = Corsair Hydro Series H100

I have a feeling that it might be my ram that's holding my back from the higher clock speed. The other feeling is that I just don't know what I'm doing...

I am able to get 4.6 at 1.35Vcore. Passed IBT at Maximum (with all 32GB of RAM, took forever). This is basically using the Asus ROG stock overclocking feature within the BIOS... I've tried tweaking many other settings, and have read almost every single post on overclocking the 2700k with no luck. I've also gotten 4.7 at 1.35 to pass a couple times but it's not as stable as I'd like (BSOD after reboot for some reason). Ideally, I'd like it to always pass IBT at maximum.

Can someone please take some time to educate me on this? Has anyone achieved extreme stability at 4.8? If so, what are your settings? Should I be changing PLL voltage? Should I enable PLL? Should I increase my memory CAS? There are so many settings in the Asus Bios that it's very difficult to navigate. My temperatures are pretty normal, 35C at idle and max I've seen is 74C on load, but usually hover around 65C.

If anyone has achieved 4.8Ghz and passing 20 runs of IBT (at Maximum and 8 cores), can you please chime in. I've also watched this video and have tried to mimic the settings without any luck : http://www.youtube.com/watch?v=lajZi-JAFXA

Thanks guys! I really appreciate it.
November 24, 2011 6:21:19 AM

xaveon said:
Hi Everybody,

I really need the group's help. I'm a newbie at overcloking and I just can't get my 2700k to be extremely stable at 4.8! I know people are talking about 5.0 Ghz+. But all I'm asking for is just 4.8Ghz (extremely stable)!

Ok, so here's what I'm running:

CPU = i7 2700k (Retail, Costa Rica)
MB = ASUS Maximus IV Extreme -Z
RAM = CORSAIR Vengeance 32GB (4 x 8GB) DDR3 1866 CMZ32GX3M4X1866C10
PSU = Corsair Professional Series Gold 850 (AX850)
HD = OCZ RevoDrive 3 X 2 240GB
COOLING = Corsair Hydro Series H100

I have a feeling that it might be my ram that's holding my back from the higher clock speed. The other feeling is that I just don't know what I'm doing...

I am able to get 4.6 at 1.35Vcore. Passed IBT at Maximum (with all 32GB of RAM, took forever). This is basically using the Asus ROG stock overclocking feature within the BIOS... I've tried tweaking many other settings, and have read almost every single post on overclocking the 2700k with no luck. I've also gotten 4.7 at 1.35 to pass a couple times but it's not as stable as I'd like (BSOD after reboot for some reason). Ideally, I'd like it to always pass IBT at maximum.

Can someone please take some time to educate me on this? Has anyone achieved extreme stability at 4.8? If so, what are your settings? Should I be changing PLL voltage? Should I enable PLL? Should I increase my memory CAS? There are so many settings in the Asus Bios that it's very difficult to navigate. My temperatures are pretty normal, 35C at idle and max I've seen is 74C on load, but usually hover around 65C.

If anyone has achieved 4.8Ghz and passing 20 runs of IBT (at Maximum and 8 cores), can you please chime in. I've also watched this video and have tried to mimic the settings without any luck : http://www.youtube.com/watch?v=lajZi-JAFXA

Thanks guys! I really appreciate it.




I just built my system the other day but on an I7 2600k. Coming off an AMD build and different motherboard, OC'ing an I7 is somewhat different than what I am use to.

I am still trying but manage to hit 4.5 stable. How did I get there? After all the tweaking with voltage, mem, etc., it did not work. So all I did was just simply bump up the multiplier and leave the rest on AUTO. Yes, its strange and seems like the I7s don't need much juice to OC.

Good luck.
m
0
l
a b à CPUs
November 24, 2011 7:53:00 AM

xaveon said:
Hi Everybody,

I really need the group's help. I'm a newbie at overcloking and I just can't get my 2700k to be extremely stable at 4.8! I know people are talking about 5.0 Ghz+. But all I'm asking for is just 4.8Ghz (extremely stable)!

Ok, so here's what I'm running:

CPU = i7 2700k (Retail, Costa Rica)
MB = ASUS Maximus IV Extreme -Z
RAM = CORSAIR Vengeance 32GB (4 x 8GB) DDR3 1866 CMZ32GX3M4X1866C10
PSU = Corsair Professional Series Gold 850 (AX850)
HD = OCZ RevoDrive 3 X 2 240GB
COOLING = Corsair Hydro Series H100

I have a feeling that it might be my ram that's holding my back from the higher clock speed. The other feeling is that I just don't know what I'm doing...

I am able to get 4.6 at 1.35Vcore. Passed IBT at Maximum (with all 32GB of RAM, took forever). This is basically using the Asus ROG stock overclocking feature within the BIOS... I've tried tweaking many other settings, and have read almost every single post on overclocking the 2700k with no luck. I've also gotten 4.7 at 1.35 to pass a couple times but it's not as stable as I'd like (BSOD after reboot for some reason). Ideally, I'd like it to always pass IBT at maximum.

Can someone please take some time to educate me on this? Has anyone achieved extreme stability at 4.8? If so, what are your settings? Should I be changing PLL voltage? Should I enable PLL? Should I increase my memory CAS? There are so many settings in the Asus Bios that it's very difficult to navigate. My temperatures are pretty normal, 35C at idle and max I've seen is 74C on load, but usually hover around 65C.

If anyone has achieved 4.8Ghz and passing 20 runs of IBT (at Maximum and 8 cores), can you please chime in. I've also watched this video and have tried to mimic the settings without any luck : http://www.youtube.com/watch?v=lajZi-JAFXA

Thanks guys! I really appreciate it.

that's why people choose 2500k for overclocking and gamming.
m
0
l
Related resources

Best solution

a c 103 à CPUs
a c 239 K Overclocking
November 24, 2011 11:35:47 AM

@xaveon

Quote:
RAM = CORSAIR Vengeance 32GB (4 x 8GB) DDR3 1866 CMZ32GX3M4X1866C10


32GB of system memory?

Why? 32GB?

If you spent that much on memory, I'm curious as to what graphics card you're running, with an 850W power supply?

What would you possibly need that much memory for?

Quote:
I have a feeling that it might be my ram that's holding my back from the higher clock speed. The other feeling is that I just don't know what I'm doing...


I guarantee you that's what is holding you back and as long as you are determined to run that much memory you may as well settle for the 4500mhz range and probably have to drop the memory speed significantly to become P95 Blend test stable

Quote:
Can someone please take some time to educate me on this? Has anyone achieved extreme stability at 4.8?


I've clocked my 2500K to 5100mhz, but I'm only running 8GB 2 x 4GB of memory, good luck with getting 32GB to a high overclock with any kind of stability.

No offense, but you should have started your education in the parts purchasing stage of this adventure, and bought the components that would have allowed your overclocking goals.

My suggestion would be to leave the DDR3 voltage 1.5v and Timings 10-11-10-30 at the 32GB kit specs even though 11-11-11-30 may work better and start dropping the memory speed from 1866, to 1600 and test for stability if No, drop to 1333 and test if No, drop to 1066 and test if No, drop to 800 and test, until you find the memory speed that will run at 4800mhz.

Just because any memory is rated a certain speed does not mean when the manufacturer rated the memory that they're making claims that the memory can run the rated speed at a highly overclocked level, that memory was only tested and rated for the highest stock capable speeds required by the CPUs it would be run on.

Therefore to reach stability at the higher CPU multiplier clock speeds you have to drop the speed the memory runs at.

Good Luck!

Quote:
Should I be changing PLL voltage? Should I enable PLL? Should I increase my memory CAS?


No! Learn first! Then Do!
Share
November 24, 2011 12:59:24 PM

Maybe he wants to create a ram disk or ram cache. I'm about to build a system and I'd like to put 32 GB in it so I can create a 24 GB Ram Disk. If I do thought I'll be doing it on X79 because 8 gb dimms are out of this world.
m
0
l
November 24, 2011 1:02:13 PM

pro-gamer said:
that's why people choose 2500k for overclocking and gamming.


I wouldn't say that at all. There's plenty of stories of guys getting 4.8+ out of a 2600K. This guy should have done research before purchasing/attempting overclocking though.
m
0
l
November 24, 2011 3:40:21 PM

Quote:
32GB of system memory? Why? 32GB? What would you possibly need that much memory for?


I'm not a gamer. This system is for Photoshop/Lightroom. So the more System Memory the better.

Quote:
If you spent that much on memory, I'm curious as to what graphics card you're running, with an 850W power supply?


I'm using an nVidia Quadro FX 5800

Quote:
My suggestion would be to leave the DDR3 voltage 1.5v and Timings 10-11-10-30 at the 32GB kit specs even though 11-11-11-30 may work better and start dropping the memory speed from 1866, to 1600 and test for stability if No, drop to 1333 and test if No, drop to 1066 and test if No, drop to 800 and test, until you find the memory speed that will run at 4800mhz.


I'll try this. I've gotten it stable at 4.6Ghz and I might just leave it at that. 200Mhz isn't going to make much of a difference.

Quote:
Therefore to reach stability at the higher CPU multiplier clock speeds you have to drop the speed the memory runs at.


I have dropped it and have also tried setting it to auto. I'm at a point (I personally feel) of diminishing returns. I can get it stable at 4.6 at 1.35Vcore. But haven't been able to get it stable at 4.8 at 1.38Vcore. Which means to get it stable, I might have to go into the 1.4+. I just don't feel that the extra 200Mhz isn't worth the additional voltage increase.

Quote:
I wouldn't say that at all. There's plenty of stories of guys getting 4.8+ out of a 2600K. This guy should have done research before purchasing/attempting overclocking though.


There isn't a definitive answer on 2500k vs 2600k vs 2700k. Everyone has their own opinions. I can reference more than 5 different threads with people stating that the 2700k is great, and then I can also reference 5 other threads that state that the 2700k is nothing more then a binned 2600k. Do you have definitive proof that the 2500k or the 2600k overclocks better than the 2700k? I'd love to see it.
m
0
l
November 25, 2011 1:11:10 AM

Nope. I just know that to suggest people buy a 2500K because it's better for overclocking is quite contrary to a lot that I've read. Like you eluded to, buying a processor is kind of a crapshoot, no matter the model. I'm simply saying there's plenty of 2600K's out there (probably at least half, as a guess) that can go 4.8+.
m
0
l
a c 103 à CPUs
a c 239 K Overclocking
November 25, 2011 7:28:22 AM

Quote:
I'll try this. I've gotten it stable at 4.6Ghz and I might just leave it at that. 200Mhz isn't going to make much of a difference.


That's a great overclock with that much memory.
m
0
l
November 25, 2011 2:07:08 PM



Quote:
I've clocked my 2500K to 5100mhz, but I'm only running 8GB 2 x 4GB of memory, good luck with getting 32GB to a high overclock with any kind of stability.


I am trying to get to 5.0 but i can't get it stable!!

What are your vcore settings ( including: PLL, LLC, VTT, Dram and SA?) I have been trying for several hours to get my system stable beyond the 4.8 mark but it didn't work out. Ram configuration is 2 x 4 GB G. Skill 1600 CL9 running at 9 9 9 24 1T, My ram is by the way still not stable on 4.8 in the blend test in P95, any suggestion whitch voltage i would need to increase, i Have current voltages on:
dynamic vcore: +0.070 (adds up with the LLC to 1.40 Vcore)
VTT voltage: 1.080 stock is 1.05
system agent voltage: 0.920 unchanged
graphics dvid: +0.000
CPU PLL: 1.860 V up from 1.82
and Dram is set to 1.56 instead of 1.5

Thx for any insights 4ryan6

m
0
l
December 1, 2011 11:09:47 PM

Best answer selected by xaveon.
m
0
l
a c 103 à CPUs
a c 239 K Overclocking
December 3, 2011 12:23:43 AM

stephanisk said:
Quote:
I've clocked my 2500K to 5100mhz, but I'm only running 8GB 2 x 4GB of memory, good luck with getting 32GB to a high overclock with any kind of stability.


I am trying to get to 5.0 but i can't get it stable!!

What are your vcore settings ( including: PLL, LLC, VTT, Dram and SA?) I have been trying for several hours to get my system stable beyond the 4.8 mark but it didn't work out. Ram configuration is 2 x 4 GB G. Skill 1600 CL9 running at 9 9 9 24 1T, My ram is by the way still not stable on 4.8 in the blend test in P95, any suggestion whitch voltage i would need to increase, i Have current voltages on:
dynamic vcore: +0.070 (adds up with the LLC to 1.40 Vcore)
VTT voltage: 1.080 stock is 1.05
system agent voltage: 0.920 unchanged
graphics dvid: +0.000
CPU PLL: 1.860 V up from 1.82
and Dram is set to 1.56 instead of 1.5

Thx for any insights 4ryan6


Drop the memory to 2T instead of 1T, and see if the guide in my sig helps
m
0
l
March 24, 2012 4:47:21 AM

xaveon said:
Best answer selected by xaveon.

nxaveon, unfortunately you`re looking for the best of both worlds here,you want a photo editing and multi-tasking rig that does extreme overclocking as well.The 32 g ram slows down the whole procedure for overclocking, you have great results and I would leave it at that.Most of us would be thrilled to get those numbers ! Jerry from toronto 2700k-cosmos case-2x4g corsair vengance-asus max 4 ext z68-120 agility 3 boot-2tb wd sata 3-1050 corsair hx psu-hybrid TEC and water-2x240 rads-asus 7950 gpu. 24 hours prime 95 5.2 at 1.49v
m
0
l
!