-
Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!
How to Overclock Intel xeon x5680 on ASUS P6T Deluxe v1
- Thread starter MuHcOw
- Start date
Heheh you’ll be fine. That’s 1.6v @ 4800, air cooled. I probably wouldn’t do it in the summer..
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #163
It's just that here I'm told that I shouldn't go any higher...
EarthDog and UltraTaco helped me out a lot on my last OC - So I'm kind of confused now
I DO have pretty good cooling (if you ask me) - That might keep the temp down. But won't 1.5V - 1.6V degrade my CPU a lot faster than normal, despite my water cooler??
EarthDog and UltraTaco helped me out a lot on my last OC - So I'm kind of confused now
I DO have pretty good cooling (if you ask me) - That might keep the temp down. But won't 1.5V - 1.6V degrade my CPU a lot faster than normal, despite my water cooler??
You misunderstood what I said. I said feed it voltage until you can’t keep it cool anymore. You said 1.4 is as high as you would go.. I said I was ok with 1.6, though I should have said for benching, not 24/7, but I thought it was a given.
Some CPUs like voltage and some don’t. It usually lets you know within a few minutes. For daily stuff if it’s not running @ stock, I usually run it between 1.3-1.4v, more if I’m feeling zesty.
Some CPUs like voltage and some don’t. It usually lets you know within a few minutes. For daily stuff if it’s not running @ stock, I usually run it between 1.3-1.4v, more if I’m feeling zesty.
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #165
Hmm... My message got deleted 
Mobile editing
Okay, thanks
My PC is not running 24/7, but on the other hand I don't know when I will be buying myself a new MB, CPU etc.
So keeping it at 1.4 or below is pretty high up on my list (but not set in stone).
I have no issues keeping it cool at 1.42500 (tried it last night).
Mobile editing
Okay, thanks
My PC is not running 24/7, but on the other hand I don't know when I will be buying myself a new MB, CPU etc.
So keeping it at 1.4 or below is pretty high up on my list (but not set in stone).
I have no issues keeping it cool at 1.42500 (tried it last night).
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #167
For science!!
IF I could get a stable system running 26x176 and a stable system running 22x208
What to choose??
Both are 4.576GHz
Tried these...
26x176 (~4.576GHz)
VCore: 1.4
CPU PLL: 1.9
QPI/DRAM: 1.4
The above was a no-go.
23x199 (~4.577GHz)
VCore: 1.4
CPU PLL: 1.9
QPI/DRAM: 1.4
The above was a no-go.
22x208 (~4.576GHz)
VCore: 1.4
CPU PLL: 1.9
QPI/DRAM: 1.4
The above was a no-go.
Increasing Vcore - Is that the only thing that would make the above work for me?
Oh - I have 6 x 8GB RAM installed - Don't know if that makes a difference.
IF I could get a stable system running 26x176 and a stable system running 22x208
What to choose??
Both are 4.576GHz
Tried these...
26x176 (~4.576GHz)
VCore: 1.4
CPU PLL: 1.9
QPI/DRAM: 1.4
The above was a no-go.
23x199 (~4.577GHz)
VCore: 1.4
CPU PLL: 1.9
QPI/DRAM: 1.4
The above was a no-go.
22x208 (~4.576GHz)
VCore: 1.4
CPU PLL: 1.9
QPI/DRAM: 1.4
The above was a no-go.
Increasing Vcore - Is that the only thing that would make the above work for me?
Oh - I have 6 x 8GB RAM installed - Don't know if that makes a difference.
Last edited:
If the ceiling of the chip is not what's holding you, then yes. Meaning, maybe your particular processor won't do 4.6 with your current cooling method.
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #169
My cooler CAN take care of the heat from my CPU. So in that regard I can easily give the CPU some more juice...
It's just that I'm not really happy about pumping too much voltage into it (even though temps are relative low).
Maybe it's just a "bad batch" CPU??
I have two of them and I'll be trying out both of them.
I just wanna make sure that I have reached the "limit" with this CPU before I move on to the next one.
The word "limit" doesn't really make sense to anyone here at Overclockers
I know 
But still - If there's anything I can do in order to get more out of it WITHOUT pumping it with 230 Volts, then I would really like to try..
Problem is that I don't know where to begin and how much to expect.
Being naive by nature I WAS hoping for 4.6GHz with this CPU at around 1.4V (I have to no avail tried with 1.425V).
It's just that I'm not really happy about pumping too much voltage into it (even though temps are relative low).
Maybe it's just a "bad batch" CPU??
I have two of them and I'll be trying out both of them.
I just wanna make sure that I have reached the "limit" with this CPU before I move on to the next one.
The word "limit" doesn't really make sense to anyone here at Overclockers
I know But still - If there's anything I can do in order to get more out of it WITHOUT pumping it with 230 Volts, then I would really like to try..
Problem is that I don't know where to begin and how much to expect.
Being naive by nature I WAS hoping for 4.6GHz with this CPU at around 1.4V (I have to no avail tried with 1.425V).
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #177
Because I tried running Prime95 a few days ago (small FFTs) @ 1.425 Vcore, and none of my temps went alarmingly high (not stable though).
But I don't think I want to keep it that high.
I know some bench tests will create more heat than Prime95, but I don't think it will add more that a few degrees - I could of course be wrong here!!!
But I don't think I want to keep it that high.
I know some bench tests will create more heat than Prime95, but I don't think it will add more that a few degrees - I could of course be wrong here!!!
Last edited:
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #178
@freeagent:
Can you elaborate a bit?
My old x5680 ran at 4.4GHz, also with 48GB RAM (slightly underclocked).
Can you elaborate a bit?
My old x5680 ran at 4.4GHz, also with 48GB RAM (slightly underclocked).
OP
- Joined
- Jul 19, 2013
- Thread Starter
- #179
A little update - Haven't had much time lately, so the OC have been put on hold quite a few times.
But so far I have been trying the following combinations:
26x177 (~4.602GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
25x184 (~4.600GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
24x192 (~4.608GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
23x200 (~4.600GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
22x209 (~4.598GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
None of the above will give more that ~45 minutes of Prime95 (small FFTs).
I'd rather not go above 1.4 Vcore because of "reasons"
I've been trying to adjust only ONE parameter in order to keep it "simple". So I dialed the "CPU PLL" this time.
4.6GHz would be SO great, I'm just not sure it's possible with THIS CPU if I have to stay at (or below) 1.4 Vcore - Unless you guys know what else to try.
If I find a BCLK/Multiplier combination that is stable with the above voltage settings, then my next step would be to try lowering those voltage levels again while maintaining stability.
Any words of wisdom? ("give up" doesn't count)
Thanks
But so far I have been trying the following combinations:
26x177 (~4.602GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
25x184 (~4.600GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
24x192 (~4.608GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
23x200 (~4.600GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
22x209 (~4.598GHz)
VCore: 1.4
CPU PLL: 1.80 / 1.86 / 1.92
QPI/DRAM: 1.4
None of the above will give more that ~45 minutes of Prime95 (small FFTs).
I'd rather not go above 1.4 Vcore because of "reasons"
I've been trying to adjust only ONE parameter in order to keep it "simple". So I dialed the "CPU PLL" this time.
4.6GHz would be SO great, I'm just not sure it's possible with THIS CPU if I have to stay at (or below) 1.4 Vcore - Unless you guys know what else to try.
If I find a BCLK/Multiplier combination that is stable with the above voltage settings, then my next step would be to try lowering those voltage levels again while maintaining stability.
Any words of wisdom? ("give up" doesn't count)
Thanks
- Joined
- Oct 28, 2017
You have thos backwards, Sir.
Dram bus voltage has to be within .5 volts of your QPI/DRAM core voltage.
Here is an example:
QPI/DRAM Core 1.1v......DRAM Bus 1.5v-1.60v
QPI/DRAM Core 1.2v......DRAM Bus 1.5v-1.70v
QPI/DRAM Core 1.3v......DRAM Bus 1.5v-1.80v
On p6t, it's a little different. Minimum qpi/dram is 1.2v and you get a warning at dram bus 1.66v (goes in .02 increments, so it's either 1.64-OK or 1.66-NOT OK; can't do betweens). Their safe limit seems to be set to .45v difference, bit warning keeps lit after you pass 1.66 dram even if you increase qpi/dram
Similar threads
