Help to Overclock

[TOM_K]

I am trying to over clock my new pc. I have never done this before so i need someone with experience to help me...

would like to go to 4. ghz

A nice description of what to do in the BIOS would help.
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CPU

AMD Phenom 1100T
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103913&cm_re=AMD_Phenom_1100T-_-19-103-913-_-Product

Motherboard

ASUS Crosshair IV Formula
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131644

Ram

Corsair's Dominator
http://www.corsair.com/memory-3/amd-memory-solutions/phenom-ii/cmd8gx3m4a1333c7.html

CPU Cooler

Crosshair H70

 

[videl]

Hey, I haven't tried to overclock the six core phenom ...but I have overclocked a black edition phenom II x4 before...so I might be able to help some...

First off, I'd have to say iI don't know how the turbo feature works on these cpus as the previous phenoms didn't have it....

Since this is a black edition cpu, overclocking it should theoretically be really easy.
All you have to do is pick up the multiplier to the desired setting...one that will give you 4Ghz... bus x cpu multiplier (200 x 20 = 4Ghz)
I would not recommend trying to just to this setting right away though

1. So first try raising the multiplier in small increments until you start to go unstable. when the cpu does start getting unstable, add voltage to the cpu also in small increments of .015v or .025v until you get your stability back...

2. Now you can keep doing the previous step again until you reach the desired cpu clock speed. (because we're overclocking with the multi we don't have to worry about other stuff like ram speed so ocing with multi is a bit simpler)

3. To get 100% stability you might have to raise the pcie bus a little (don't go too high though, it can start corrupting your data) and some other motherboard voltages...

4. Turn cool'n'quiet off....also if you can, try turning off turbo so you don't screw up your overclock...Also I recommend you do some research and search up guides to oc that cpu so you know what to do with turbo.

Well, I tired helping a little...I could have gone more detailed but I didn't have much time...if you have more specific questions, ask em...and you should do a little research...

Well, good luck

 

[TOM_K]

I just installed cpu z and it shows


D Ram frequency: 668.9
FSB DRam :3.10
CAS :9
RAS to CAS :9
RAS :9
Cycle :24
Bank :34
command :2T



IS that rignt. My Ram is 1333 why is it what low??????
what should i doo?

 

[saint19]

I can help you with the six core overclock (I have one).

1- Your RAM frequency is ok because you have a dual channel kit so, 668.9 x2 = 1337.8MHz that's the frequency of your RAM. The problem that I see is that the timings aren't correct, so, we need fix that to get better RAM performance.
2- Turn off Cool'n'Quite, C1E support and Turbo core.
3- Set the HT frequency and NB frequency to 2000MHz (for now)
4- Your CPU is BE, so, is more "easy" to overclock. I think that you can get 3.7GHz or maybe 3.8GHz with the stock voltage, so, go to your BIOS and rise the multiplier from x16.5 (I think that is your default multiplier) to x18.5 for 3.7GHz or x19 for 3.8GHz.
5- Test the stability rig with prime95, LinX, OCCT or y-cruncher for 2 hours or more, and ALWAYS keep your eyes in the temps, use HWMonitor or Core temp to know that, 55ºC or above isn't good.

 

[TOM_K]

I can help you with the six core overclock (I have one).

1- Your RAM frequency is ok because you have a dual channel kit so, 668.9 x2 = 1337.8MHz that's the frequency of your RAM. The problem that I see is that the timings aren't correct, so, we need fix that to get better RAM performance.
2- Turn off Cool'n'Quite, C1E support and Turbo core.
3- Set the HT frequency and NB frequency to 2000MHz (for now)
4- Your CPU is BE, so, is more "easy" to overclock. I think that you can get 3.7GHz or maybe 3.8GHz with the stock voltage, so, go to your BIOS and rise the multiplier from x16.5 (I think that is your default multiplier) to x18.5 for 3.7GHz or x19 for 3.8GHz.
5- Test the stability rig with prime95, LinX, OCCT or y-cruncher for 2 hours or more, and ALWAYS keep your eyes in the temps, use HWMonitor or Core temp to know that, 55ºC or above isn't good.

thanks mate but how do i change the timings i have cl7 ram ????

 

[saint19]

I gone use the pictures on thise review to help you to set the correct RAM timings.

http://www.xbitlabs.com/articles/mainboards/display/asus_crosshair_formulaiv-gigabyte-ga890fxa_ud7_4.html

Go to your BIOS>Extreme Tweaker>DRAM Timing Configuration, you can see the 1st picture in the link.

When you are there, we need change the following options.

1- DRAM CAS# Latency = 7
2- DRAM RAS# to CAS# Delay = 7
3- DRAM RAS# PRE Time = 7
4- DRAM RAS# ACT Time = 20
5- DRAM Command Rate = 2T for now, after we can try 1T.

Change too the DRAM voltage to 1.65V.

Test the stability of those settings with memtest86+.

Let me know if that works.

 

[TOM_K]

Thank you again for the fast response and very very helpful info.....



1- DRAM CAS# Latency = 7
2- DRAM RAS# to CAS# Delay = 7
3- DRAM RAS# PRE Time = 7
4- DRAM RAS# ACT Time = 20
5- DRAM Command Rate = 2T for now, after we can try 1T.

Do i leave the rest of the numbers auto?
and also my memory is unganged i red in the forums that it is best to gang them ??? if yes how???

thanks again

I gone use the pictures on thise review to help you to set the correct RAM timings.

http://www.xbitlabs.com/articles/mainboards/display/asus_crosshair_formulaiv-gigabyte-ga890fxa_ud7_4.html

Go to your BIOS>Extreme Tweaker>DRAM Timing Configuration, you can see the 1st picture in the link.

When you are there, we need change the following options.

1- DRAM CAS# Latency = 7
2- DRAM RAS# to CAS# Delay = 7
3- DRAM RAS# PRE Time = 7
4- DRAM RAS# ACT Time = 20
5- DRAM Command Rate = 2T for now, after we can try 1T.

Change too the DRAM voltage to 1.65V.

Test the stability of those settings with memtest86+.

Let me know if that works.

 

[videl]

It was fater to copy and paste rather than type it all out...lol...

"It is amd's version of Nvidia's Locked vs unlocked architecture.

basically allowing you to use your ram in dual channel vs single channel.

Ganged = dual channel mode for ram. All cores get access to 100% of the ram.

unganged = single channel. Each core gets access to a stick of ram.

In theory, the unganged mode is better as each core will get access to data quicker. In theory.

Some limitations apply... and i dont know muchelse.

Edit: sorry, it also alows you to control the clocks indipendantly from eachother. "

quote from: overclock.net http://www.overclock.net/amd-memory/324052-ganged-vs-unganged-mode.html

 

[saint19]

With unganged RAM you lose performance since dual-channel isn't functional.

 

[videl]

Unless of course you only have one channel occupied, then you won't see a difference...
but if you use both channels you have best performance with ganged...

 

[TOM_K]

I use all 4 channels but i cant find the option in the bios???? looked everywhere

Unless of course you only have one channel occupied, then you won't see a difference...
but if you use both channels you have best performance with ganged...

 

[videl]

hmmm idk, have you looked in DRAM Driving Configuration?
Maybe you board doesn't have that feature...maybe your board keeps
it at unganged and doesn't even include that feature in the bios...

 

[green300]

Look under, Advanced/Chipset/Northbridge Configuration/Dram Controller Configuration/DCT Unganged Mode. Options being auto or always.

 

[TOM_K]

thanks man found it

Look under, Advanced/Chipset/Northbridge Configuration/Dram Controller Configuration/DCT Unganged Mode. Options being auto or always.

 

[TOM_K]

my final settings are

CPU 4.1 GHz

CPU ratio 20
CPU bus 205
dram frequency 1371
CPU voltage 1.45
ram voltage 1.65
ram ganged

cool and quiet disabled
c1e support disabled
-----------------------------

idle
degrees
CPU 44
MB 29
north b 46
south b 37

have to test with prime yet


what do you think????

 

[videl]

looks goo so far...just check out your load temps...wow my nb ran at 67...weird...maybe thats why the mobo died quickly, was probably faulty...

 

[TOM_K]

started prime 95 and it crashes after 5 min . don't know what to do next. help......

looks goo so far...just check out your load temps...wow my nb ran at 67...weird...maybe thats why the mobo died quickly, was probably faulty...

 

[videl]

Hey try adding cpuvtt voltage if you have it...and/or raise the qpi voltage a bit...and pick up the PCIe clock up a bit, like 110 or something...see if that adds any stability...