Phenom II X6 1055t, wont go past 3.65

RCoon

RCoon

RCoon

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I've read many forums about overclocking this, a lot have managed 4.0, though i've hit a wall at 3.65ghz.
im running 16gb ram, oc'd at about 1387, originally 1333, and ive kept HT and NB at 2000-2100. The core volt is set to 1.45, and my ram at 1.65v.
multiplier is at 14 (locked on the 1055t at 14 or below) with the value currently at about 258ish. i've disabled most of the cool n quiet etc on my mobo, an asus m4a87td evo, and ive got the processor being cooled with a corsair h80 cpu water cooler.
the computer is perfectly stable att the current settings after running prime95 for a few hours, but the second i up the core value from 258, and reduce ram to below 1333, the computer reboots, and instead of booting windows, i just get a post message saying overclocking failed!
 
I have found that my 1055T will go to about 3.8Ghz with 8Gb of 1600 ram but is best at 24/7 using 3.5Ghz. Not all x6 core processors will hit 4Ghz and with the confines of a locked multiplier your 3.65Ghz is probably a limit on your current system mobo/ram.
 
i did get the feeling that 16gb instead of 8gb was reducing the amount i could overclock the core by!
 
As above, 3.5GHz is a good clock for the 1055T. I've got 3 of them myself, 1 at home and the other two at work. Mine does 4GHz no problem, the other two struggle at 3.8+ but a lot of that is down to the boards IMO. Run mine at 3.5GHz too, mainly because I like quite computing
 
I was stable at 3.8Ghz until I upgraded from 4 to 8Gb of Ram, now I can only get 3.5Ghz. I've only ever been able to run the ram at the slowest speeds though, so I assume its just an issue with the mobo not being able to cope. Ah well :(
 
How hot do they run? What HSF would you recommend?

I read somewhere that early Phenom II's had miscalibrated core temp monitors (they read temperatures significantly lower than motherboard monitors immediately below the chip).
I guess if you're unlucky enough to have one of these, you need to be extra cautious with temp.

I have a tuniq tower 120 extreme that I bought for my old Q6600; it has AM2/2+ mounts - but not sure about AM3.
Did the mounting bracket change at all between AM2 & AM3, or will it be fine as-is?
 
TehJumpingJawa said:
How hot do they run? What HSF would you recommend?

I read somewhere that early Phenom II's had miscalibrated core temp monitors (they read temperatures significantly lower than motherboard monitors immediately below the chip).
I guess if you're unlucky enough to have one of these, you need to be extra cautious with temp.

I have a tuniq tower 120 extreme that I bought for my old Q6600; it has AM2/2+ mounts - but not sure about AM3.
Did the mounting bracket change at all between AM2 & AM3, or will it be fine as-is?
Click to expand...

Phenoms have lower max safe temps, according to AMD documentation (62c for 125w and 70 odd for 95w iirc) than Intel chips and do tend to run a bit cooler. Core temps are way off though, usually the best way to monitor temps is using something like HWmonitor and looking for the CPU or TMP0/1 fields

As for the Tuniq, it will be fine and the mounts should be the same. I have a 120 on my X6 here with the fan at ~600RPM idle 34c, ~800RPM load 60c, though mine is a 95w 1055T, so for a 125w you may need higher fan speeds if using the stock Tuniq fan
 
d_brennen said:
Phenoms have lower max safe temps, according to AMD documentation (62c for 125w and 70 odd for 95w iirc) than Intel chips and do tend to run a bit cooler. Core temps are way off though, usually the best way to monitor temps is using something like HWmonitor and looking for the CPU or TMP0/1 fields

As for the Tuniq, it will be fine and the mounts should be the same. I have a 120 on my X6 here with the fan at ~600RPM idle 34c, ~800RPM load 60c, though mine is a 95w 1055T, so for a 125w you may need higher fan speeds if using the stock Tuniq fan
Click to expand...

Core temps are accurate at above 40c or so and those are the ones AMD recommend you follow for their safety limits.
 
From Core Temp FAQ

I can only see a single temperature reading.
AMD processors based on the Phenom and Phenom II (Athlon II, Sempron II, Turion II, etc.) only have a single thermal sensor.
Thus Core Temp will only display a single CPU temperature reading. There is no way of getting a per-core reading on these processors.
Click to expand...

Why is the temperature of my Phenom based processor lower than the ambient temperature?
Starting with the Phenoms, AMD's digital sensor no longer reports an absolute temperature value anymore, but a reading with a certain offset, which is unknown. It is estimated that this offset is between 10 - 15c.
Click to expand...

Take Core Temp's core readings with a pinch of sodium chloride
 
d_brennen said:
Are you overclocking it? They are meant to be 95w stock, maybe 106w with Turbo active? HWmonitor gives a live estimate of power. Mine shows as 106w in CPU-Z too

http://www.cpuid.com/downloads/hwmonitor/1.18-setup.exe
Click to expand...

Definitely not overclocking it; infact I've never seen turbo boost activate; I guess that's down to the Dell motherboard too.

HWMonitor shows 109.20W peek. However I'm skeptical of CPU-Z/HWM compatibility with this Dell motherboard - as they both report the CPU VCORE as ~1.98V 0_o

Here's the screenshots of both (prime had been running a large FFT for a few mins, hence the temps. It idles at a reported ~18°c)

HWM%201055T%20Dell%20XPS%207100.png
CPUZ%201055T%20Dell%20XPS%207100.png
 
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d_brennen said:
Ahh, as an OEM machine it will be a 95w. Does the BIOS have any clock/voltage settings? I'm guessing not
Click to expand...

bwhahaha. No :D
I was thankful the bios allowed the post boot logo to be disabled! :rolleyes:

Well I guess if it is a 95W chip, that's good news for my plans to replace the motherboard & PSU to see how far it'll overclock.
I suppose I'll find out for sure when I replace the HSF.

Any suggestions for a cheap, but good overclocker?
Or am I being unrealistic expecting a ~4GHz overclock on a ~£60 mobo?
 
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K, good to know. Will adjust my search parameters =]

Though just glancing at my case I'm starting to wonder if my old tuniq tower 120 extreme will actually fit in the case; it might well be too tall for the case width! Erf.

So.... new motherboard, new psu, possibly new ram (it's only 10666 atm), and either a new atx case, or a new HSF.
I might just not bother...
 
TehJumpingJawa said:
K, good to know. Will adjust my search parameters =]

Though just glancing at my case I'm starting to wonder if my old tuniq tower 120 extreme will actually fit in the case; it might well be too tall for the case width! Erf.

So.... new motherboard, new psu, possibly new ram (it's only 10666 atm), and either a new atx case, or a new HSF.
I might just not bother...
Click to expand...

TBH, they are fine for most things at stock, but really shine at 3.5GHz+. Though spending a lot of dosh on old tech... Maybe start saving for a whole new setup
 
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