AMD Thuban X6 OCing database

[richierich1212]

Wes - Another guy tested the same thing as you and gets the same results:

http://www.overclock.net/amd-cpus/727805-overclocking-x6s-disabled-cores-2.html#post9296705

 

[jthunderloc]

Wes - Another guy tested the same thing as you and gets the same results:

http://www.overclock.net/amd-cpus/727805-overclocking-x6s-disabled-cores-2.html#post9296705

Nope, thats me

-Wes

 

[richierich1212]

lmao ok, just noticed your location on OCN as well.

 

[jchu14]

Question for everybody, I was playing around with my 1055t and disabled 2 of my cores to see what a difference it would make with temps, etc and noticed that it dropped and locked my multiplier to 4, can anyone else disable 2 of their cores and see what it does to the multi? As soon as I enabled them everything went back to normal. Trying to see if its the chip, the board, or something in windows. yes, cool N Quiet was disabled, windows wont let me run in performance mode, only balanced. the Apply and Save As buttons are grayed out.

-Wes

I did a quick test with my 1055t and Asus M4A77D. I disabled 4 cores and it appears to work as expected. I still get my overclocked speed at each core and LinX speed is about right. This is with CnQ enabled (the board doesn't disable CnQ even if I set it to disable in bios)

 

[jthunderloc]

then it must be something with this board. Thanks jchu14!

-Wes

 

[paolo.oliva2]

The max IPC is with max clock CPU + max clock NB and max clock RAM

Linx 4,2GHz 1,5Vcore - NB 2,8GHz 1,2V - DDR3 1868MHz 9-9-9-24-33





Error, but 4,358GHz a 1,524V...
NB too high and DDR3 too high



Is OK but with NB to 2,2Ghz not good IPC.

4,323GHz a 1,55Vcore

 

[ZipSpeed]

I'm sure I can push my system more but found a good balance between voltage and temperature at 3.5 GHz. Initially, was priming at 1.35V but failed after 5 minutes. Stable at 1.4V.

CPU Model: AMD Phenom II X6 1055T
* CPU Frequency: 3500 MHz
* CPU vCore: 1.400V
* CPU Multiplier: 14x
* CPU Turbo: Disabled
* CPU NB Speed: 2500 MHz
* HT Bus Speed: 2500 MHz
* HT Link Speed: 250 MHz
* RAM Brand and Model: Patriot Viper II Sector 5
* RAM Speed: DDR3-1333 MHz
* RAM Timings: 7-7-7-20-1T
* RAM Configuration: 2 x 2 GB
* RAM vDIMM: 1.5V
* Motherboard: Asus M4A785TD-V EVO
* Chipset/Socket: 785G/SB710/AM3
* Cooling: Cooler Master Hyper 212 Plus
* Temps: 22C Idle / 45C Load (according to Core Temp)
* Operating System: Windows 7
* 32/64-Bit: 64
* Stable/Suicide/Untested: Stable (Passed Prime95 after 17 hours)

 

[aigomorla]

really impressed with the new X6 especially for the price they came out in.

When i look at your vcore tho guys... i get a shudder.. i know its normal for an AMD, but im so used to not tipping that vcore over 1.4.

But great cpu's guys!

 

[Stoneburner]

I wonder if I made a mistake. I was building a gaming system and I went with the i5-750 over the 1055t. All the tests I saw had the i5-750 kicking amd's ass at stock clocks.

 

[aigomorla]

I wonder if I made a mistake. I was building a gaming system and I went with the i5-750 over the 1055t. All the tests I saw had the i5-750 kicking amd's ass at stock clocks.

if ur a gamer u wont need the extra cores.

if your a cruncher yes, u might cry because ud'd need at least a 860 to a 870 to get close to an x6.

 

[jchu14]

I'm sure I can push my system more but found a good balance between voltage and temperature at 3.5 GHz. Initially, was priming at 1.35V but failed after 5 minutes. Stable at 1.4V.

Have you tried turbo-core? 1.4V might actually be undervolting from stock voltage. The vid for my 1055t was 1.425v at 2.8ghz and 1.475 at turbo-speed. So you can probably turn on turbo core and get 3.9-4GHz boosted speed at stock voltage.

 

[nyker96]

I have a question for those running DDR2s with X6, do you feel the lack of memory bandwidth is a problem for this combo? I mean is your DDR2s enough to feed X6 at full load or you are experiencing some delays for certain app that is due to memory bandwidth shortage?

 

[ZipSpeed]

Have you tried turbo-core? 1.4V might actually be undervolting from stock voltage. The vid for my 1055t was 1.425v at 2.8ghz and 1.475 at turbo-speed. So you can probably turn on turbo core and get 3.9-4GHz boosted speed at stock voltage.

Ya, I'm undervolting. With a set voltage of 1.4V in the BIOS, CPU-Z would detect a vcore range which fluctuated between 1.296-1.360, with an average of 1.328V. My vid is very similar to yours when I run the CPU at stock.

Which actually brings up another question. I haven't used an AMD processor in years so I'm playing catch up. Typically, what is a safe 24/7 voltage for Phenom IIs? Do they differ between the X2, X4 and X6?

 

[lopri]

I have a question for those running DDR2s with X6, do you feel the lack of memory bandwidth is a problem for this combo? I mean is your DDR2s enough to feed X6 at full load or you are experiencing some delays for certain app that is due to memory bandwidth shortage?

I am curious about that, too. I hope there will be a review comparing DDR2 vs DDR3 performance, especially when overclocked.

I'm sure I can push my system more but found a good balance between voltage and temperature at 3.5 GHz. Initially, was priming at 1.35V but failed after 5 minutes. Stable at 1.4V.

Your setup looks ideal to me, for a 1055T. I am thinking of similar setup but using DDR2-1000, so that I can maintain 1:2 @250HTT. If I were to get a 1090T, I'd first shoot for the same configuration except for the multiplier (16x250). One question: Can you enable Turbo at 14x250?

I wonder if I made a mistake. I was building a gaming system and I went with the i5-750 over the 1055t. All the tests I saw had the i5-750 kicking amd's ass at stock clocks.

I don't think you've made a mistake. 750 will almost always win against 1055 in games.

 

[thilanliyan]

I have a question for those running DDR2s with X6, do you feel the lack of memory bandwidth is a problem for this combo? I mean is your DDR2s enough to feed X6 at full load or you are experiencing some delays for certain app that is due to memory bandwidth shortage?

Is there anything I can test that with?

I haven't felt like programs are slow...but then I've never run a DDR3 system.

One question: Can you enable Turbo at 14x250?

I tried enabling turbo after Ocing with my 1055 on my Gigabyte board and it doesn't work. I have seen at XS though that some people are getting turbo to work with OCing. It might just be a Gigabyte/board issue for me.

 

[ZipSpeed]

I am curious about that, too. I hope there will be a review comparing DDR2 vs DDR3 performance, especially when overclocked.


Your setup looks ideal to me, for a 1055T. I am thinking of similar setup but using DDR2-1000, so that I can maintain 1:2 @250HTT. If I were to get a 1090T, I'd first shoot for the same configuration except for the multiplier (16x250). One question: Can you enable Turbo at 14x250?


I don't think you've made a mistake. 750 will almost always win against 1055 in games.

I can enable turbo but I haven't tested it to see if it can run stable at my current voltage.

 

[jchu14]

I can enable turbo but I haven't tested it to see if it can run stable at my current voltage.

FYI, you can adjust turbo multiplier downward. This way you can strike a good balance between turbo speed and non-turbo speed at your vcore. I couldn't get stably at 253x16.5, but I was able to lower the turbo mutiplyer to 15 and run stably.

 

[CD14]

* CPU Model: AMD Phenom II X6 1090T
* CPU Stepping:
* CPU Frequency: 4216
* CPU vCore: 1.476 (CPU-Z)
* CPU Multiplier: 21
* CPU Turbo: Disable
* CPU NB Speed: 1405
* HT Bus Speed: 200
* HT Link Speed: 1405
* RAM Brand and Model: DDR3 1600mhz Patriot Gamer
* RAM Speed: 1333
* RAM Timings: 9-9-9-24
* RAM Configuration: 2x2gb
* RAM vDIMM: 1.65
* Motherboard: Asus Crosshair IV
* Chipset/Socket: 890FX AM3
* Cooling: 5x120mm Rad; Swiftech XT
* Temps: 42C Load according to coretemp/hwmonitor
* Operating System: Windows 7
* 32/64-Bit: 64
* Stable/Suicide/Untested: Stable 5 hrs 20 mins Prime95

CPU Temp is 56c. Pushed it with voltage and it started to throttle at about 72c. 4.3 but too much heat for it to handle. 1 ghz is great for AMD I assume. Much more fun with i7 though.



Throttled:

 

[alyarb]

Some of these OCs are really nice. I'm beginning to wonder whether yields overall are really great or if they haven't aggressively binned these chips yet.

 

[Spook]

* CPU Model: AMD Phenom II X6 1090T
* CPU Stepping: CCBBE CB 1013 CPCW
* CPU Frequency: 4001MHz
* CPU vCore: 1.375v Currently testing
* CPU Multiplier: 20
* CPU Turbo: Disabled
* CPU NB Speed: Default
* HT Ref Speed: Default
* RAM Speed: Default 1333Mhz
* RAM Timings: 9-9-9-24
* RAM Configuration: 2 x 2GB
* RAM vDIMM: 1.675c
* Motherboard: Asus M4A89GTD Pro/Usb3
* Chipset/Socket: 890GX
* Cooling: Zalman 10x Performa
* Temps: 20C Idle / 41C Load
* Operating System: Windows 7
* 32/64-Bit: 64
* Stable/Suicide/Untested: Being Tested.

Had troubles with both the M4A79XTD EVO - Bios did not support the 1090T and the Asus Crossfire IV, The NB was overheating to 100c, and shuting down.

Microcenter did not have a replacement Crossfire, so settled for a M4A89GTD Pro/Usb3. Oops this had all the features I needed, but also has onboard video.... But it works

Currently at 4G, and running Prime, 20min good

will update

Update :

* CPU Model: AMD Phenom II X6 1090T
* CPU Stepping: CCBBE CB 1013 CPCW
* CPU Frequency: 4001MHz
* CPU vCore: 1.375v Currently testing
* CPU Multiplier: 20
* CPU Turbo: Disabled
* CPU NB Speed: Default
* HT Ref Speed: Default
* RAM Speed: Default 1333Mhz
* RAM Timings: 9-9-9-24
* RAM Configuration: 2 x 2GB
* RAM vDIMM: 1.675v
* Motherboard: Asus M4A89GTD Pro/Usb3
* Chipset/Socket: 890GX
* Cooling: Zalman 10x Performa
* Temps: 20C Idle / 48C Load (closed case)
* Operating System: Windows 7
* 32/64-Bit: 64
* Stable/Suicide/Untested: 24hr Prime / Stable

I could probably push this rig farther, but 4Ghz is the sweet spot I always wanted.

 

[thilanliyan]

Update :

* CPU Model: AMD Phenom II X6 1090T
* CPU Stepping: CCBBE CB 1013 CPCW
* CPU Frequency: 4001MHz
* CPU vCore: 1.375v Currently testing
* CPU Multiplier: 20
* CPU Turbo: Disabled
* CPU NB Speed: Default
* HT Ref Speed: Default
* RAM Speed: Default 1333Mhz
* RAM Timings: 9-9-9-24
* RAM Configuration: 2 x 2GB
* RAM vDIMM: 1.675v
* Motherboard: Asus M4A89GTD Pro/Usb3
* Chipset/Socket: 890GX
* Cooling: Zalman 10x Performa
* Temps: 20C Idle / 48C Load (closed case)
* Operating System: Windows 7
* 32/64-Bit: 64
* Stable/Suicide/Untested: 24hr Prime / Stable

I could probably push this rig farther, but 4Ghz is the sweet spot I always wanted.

Have you done any OCCT or LinX stability testing? That vcore is amazingly low for 4GHz.

 

[KilJim]

What should i set the loadline calibration for the least fluctuations in vcore?

 

[thilanliyan]

What should i set the loadline calibration for the least fluctuations in vcore?

LLC? For AMD? Don't see that option for MY motherboard in BIOS.

 

[aigomorla]

I have a big favor to ask of you guys.

And im not saying this to down the product.

Its a bug im noticing on all the X6's as of his moment and i was wondering if its only limited to the people i actually asked.
(mark has confirmed his sensor is borked as well)

Will wait and see, but so far they are off 12c. but that still great for 4 ghz.

SO i am asking this public.

Can you guys shut down your system for about 15min.. wait for it to cool down completely.

Then turn the system on, and take a look at your idle temps when you boot right into windows.

Im hearing your sensors are all majorly borked, and its reading lower values then it should be. (sub ambient readings on ambient cooling...)

This can be dangerous unless you know the delta offset it is, because i heard from people who live on AMD telling me the MAX u want to go is 60C and not 80C like Intel.

But can we see how many people if applicable have a borked temp sensor on there X6?

This issue would be simular to intel's borked sensor on core 3... and how it always reads way lower then the others on the earily 920's.

 

[nyker96]

Is there anything I can test that with?

I haven't felt like programs are slow...but then I've never run a DDR3 system.



I tried enabling turbo after Ocing with my 1055 on my Gigabyte board and it doesn't work. I have seen at XS though that some people are getting turbo to work with OCing. It might just be a Gigabyte/board issue for me.

umm, actually good question, I don't really have any idea how you can run an objective comparison between DDR2 vs DDR3 unless you got both and uses similar chipsets as well on both testing boards. I'll have to think about it. maybe someone else who is knowledgeable can chip in on an idea on how to test if the memory bandwidth is chocking cpu performance?