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Need help getting 200BCLK

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October 14, 2011 4:46:17 PM

I'm using this useless board
GB-X58A-UD5 rev1.0 - BIOS version F6 (latest nonBETA) http://www.gigabyte.com.au/products/product-page.aspx?p...
with an i7 930
PSU is 750W Gold (Seasonic X series)

Ok so here is the story...
I my RAM is rated 2000Mhz 9-9-9-27 ct2 and I have a
NH-C14 CPU cooler (setup to blow on the mobo heatsink to, not RAM) in a HAF922 case. Overall cooling is outstanding.
CPU max temp between diff cores is 55-60C with hyperthreading on default settings running IntelBurnTest for 5loops.

After passing a IntelBurnTest EASY and Memtest86+ on X.E.M. ram profile1 for 10loops... I theorycrafted my BIOS changes for the OC...


I'm aiming to OC my CPU by 1Ghz (stock 2.8Ghz) with hyperthreading (minimum) and power saving features if possible, while still using the stock settings of my ram 2000Mhz.

BIOS Adjustments
So my Uncore has to be set to -Desired Ram Mhz x2 = 4000Mhz.... 4000Mhz/200(BCLK)=20....
So my DESIRED Uncore(UCLK) has to be x20, so I set it to that in BIOS.
For -desired RAM multiplier 2000Mhz/200(BCLK)=10, easy... You need a 1:2 RAM multiplier vs UCLK.
On gigabyte the QPI link speed has 3options... x36, 42, 48 and show your outcome in GT/s, divide that by two to get Ghz...
Anyway QPI x36 on BCLK would yield 7.2GT/s (3600Mhz) in other words, PLENTY if not too much.
So I ended up LOCKING IN these settings...

x10 Ram multiplier
x20 Uncore(UCLK)
x36 QPI
Disabled X.E.M. Profile1 instead I manually set up the timers I want to end up with...
That is 9-9-9-27 ct2 and set RAM V on 1.66 (1.64 save showed 1.636V in PC health and 1.66 showed 1.648V in PC health).


Set my CPU multiplier to x12 so when I raise the BCLK I'll never go over stock 2.8Ghz, also feed it CPU VCore 1.275V MORE THEN ENOUGH for those low frequencies...

Now EVERYTHING is on default, except for the above settings...

Set my BCLK to 150.... and QPI/Vtt1.24V (default showed 1.1V [Auto].
From this point on my goal was to raise the BCLK by increments of 150, 160, 170, 175, 180 etc, get a POST without BSOD...
Everything I got BSOD, I would raise the QPI/Vtt by 0.2V, until I got a POST again without BSOD...
With a max safety limit on my QPI/Vtt 1.34V I could only get a POST with 175BCLK... 180 would BSOD... FAIIIILLLLL!

Now from what I understand QPI/Vtt is what determines how high your BCLK can go... If there is any other way to help raise wit WITHOUT increasing my QPI/Vtt over 1.34V PLEASE LET ME KNOW.

Note: Highest stable IntelBurnTest was 170BCLK 3loops Hyperthreading. Highest CPU temp 62degree.


Now if you click the hyperlink to the mobo it claims to being able to run 2200Mhz RAM. Mmm ya right, at what CPU speed? 2Ghz? LOL... If I can't reach a POST with 200BCLK on this board with this insane cooling I'll switch to ASUS for my next buy.

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Extra info.
"IOH Core voltage is easy, if you are running a single PCIe card (graphics card), give the IOH Core 1.1V, two graphics cards 1.15V, three graphics cards 1.2V, or four graphics cards 1.25V. If you plan to run bclock frequencies far beyond 200MHz, sometimes it may help for the IOH core to be even higher."
-Source: http://www.techreaction.net/2010/09/07/3-step-overclock... under heading bclock voltages

I felt IOH Core on Auto anyway because I do have a Single PCEe card BUUUUT. It's DUAL GPU. So I'm unsure if I need to feed it extra V or not. It's a Radeon HD5970 by Gigabyte. http://www.gigabyte.com.au/products/product-page.aspx?p...

Could the HUGE graphics card be drawing some of the QPI/Vtt volt away from the rest of my system?


Thanks for any and all help!

More about : 200bclk

a b V Motherboard
a b K Overclocking
October 14, 2011 7:01:53 PM

why is it a useless board?

i am using ex58-ud5 with a i7-920 at 4.2ghz

cant remember exact bios settings off hand but its something like

cpu voltage 1.3v shows 1.280v in cpuz

ram multiplier 8

ram voltage 1.66v ram timings 7-7-7 1t command rate

bclk 200

turbo on

hyperthreading on--8 cores

cpu multiplier 21 --20 without turbo

qpi/vtt voltage 1.335

and heres the bit i think you may have wrong-- x36 qpi but not x20 uncore--i think the uncore must be at least half of the qpi so mine is x17



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October 14, 2011 8:10:00 PM

mcnumpty23 said:
i am using ex58-ud5 with a i7-920 at 4.2ghz

ram multiplier 8

ram voltage 1.66v ram timings 7-7-7 1t command rate

bclk 200

qpi/vtt voltage 1.335


LOL ram multiplier 8x200... so you can run 4.2Ghz CPU on 1600Mhz RAM... try doing it with 2000Mhz RAM

Quote:
why is it a useless board?


Because it won't allow you to run at the RAM Mhz you pay for... I payed for 2000Mhz! But won't let me run it with a high BCLK. The worst thing is gigabyte advertise that it can run 2200Mhz RAM... like I said, at what CPU speed? 2Ghz? LOL...

Quote:
and heres the bit i think you may have wrong-- x36 qpi but not x20 uncore--i think the uncore must be at least half of the qpi so mine is x17


Errm no. You don't need to have QPI frequency twice as high as uncore... Look this is what the X.E.M. enable Profile1 sets the latencies to by itself and...
Ram multi becomes x14
Uncore x28
QPI x36
http://i1105.photobucket.com/albums/h342/irlwizard/MITC...
I didn't change that... the profile does BUT IT WORKS STABLE. Survived 10loops of IntelBurnTest with only CPUv of 1.1V and overnight Memtest86+

Here is the odd thing... if Vtt/QPI Volt is set to [Auto] (Profile will choose the V it needs to run) it will work.
BUT! As soon as I manually change only the Vtt/QPI to anything between 1.26V to CRAZY 1.46V even... the system won't POST.


Do I have a right to hate it now? :) 
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October 14, 2011 8:15:11 PM

If I disable X.E.M. Profile 1...

Set my RAM Volt to 1.66 (shows 1.65 in PC Health same as the profile does).
Make my latencies 9-9-9-27 (same as my memory is and what the profile uses)
Use the same 147BCLK as the Profile auto goes to
use the same QPI x36, Uncore x28, Ram multi x14...
CPU Multiplier x12 (with no turbo)...
Finally QPI/Vtt Volt to 1.34V it still will not POST.
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a b V Motherboard
a b K Overclocking
October 14, 2011 8:34:45 PM

my bad-- it should have been The basic rule is that the uncore frequency must be at least twice the frequency of memory.

my memory must be going bad in my old age

the usual consensus is that 2000mhz ram isnt better than 1600mhz ram on these boards when your latencies are 9-9-9-27 and my 1600mhz are 7-7-7-21 and 1t command rate --the lower latencies make up for the difference in mhz

will have to find where i wrote down the bios settings i used
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a c 210 V Motherboard
a c 148 K Overclocking
October 14, 2011 8:43:09 PM

It's been to long .... I'm even forgetting SB overclock settings of late ..... but I always disable XMP profiles ..... always give me trouble. I have my son's box running a 920 at 3.8Gz (Rampage II Extreme) on normal boot undervolted with 1.125 volt as I recall, All BIOS settings normal and HT on. He has two alternate boot profiles for 4.0 and 4.2 GHz that I think are in the 1.225 volt range. Temps are 69 - 73 on the 1st two, the last tops out at 74-75 on worse core. RAM timings are all 6-7-6-18 @ 1600 Mhz.

I used this as my guide

http://vip.asus.com/forum/view.aspx?id=2008122019104023...
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October 15, 2011 7:45:25 AM

Had a good sleep and now I'm up again...

Check these results out with QPI/Vtt of just 1.26V, 7-7-7-21 t1
http://i1105.photobucket.com/album [...] 7-7-21.jpg
http://i1105.photobucket.com/album [...] 7-7-21.jpg

Since the RAM handled that easily, do you think I should tighten it even harder to 6-6-6-18 t1?

Oh and don't laugh at Diablo II!! Got to practise before nr3 comes out haha!
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October 15, 2011 8:37:38 AM

Ok so I put my CPU clock ratio to x19.. and enabled turbo so it could run... up to 191x20=3820Mhz...

BUT! It never used the extra turbo clock... only used x19 for the whole burntest (3629Mhz). Anyone know why?
http://i1105.photobucket.com/albums/h342/irlwizard/7-7-...

(The CPU obviously gets too hot anyway, so I'm gonna lower the CPU Vcore by two steps until I get BSOD and see what the temps before then).
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October 15, 2011 8:38:50 AM

PS: Idel gives me temps of just 40.... I donno how high the temps are after 3loops because I put it on 5 and took a shower and thats what I got when I came back.
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October 15, 2011 8:48:55 AM

When you go over 3.2 ghz, turbo is automatically disabled.
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a b V Motherboard
a b K Overclocking
October 15, 2011 9:21:35 AM

irlwizard said:
Had a good sleep and now I'm up again...

Check these results out with QPI/Vtt of just 1.26V, 7-7-7-21 t1
http://i1105.photobucket.com/album [...] 7-7-21.jpg
http://i1105.photobucket.com/album [...] 7-7-21.jpg

Since the RAM handled that easily, do you think I should tighten it even harder to 6-6-6-18 t1?

Oh and don't laugh at Diablo II!! Got to practise before nr3 comes out haha!



give it a try--7-7-7 are tight timings for ddr3 so 6-6-6 might not work but 7-6-6 or 7-7-6 or similar may
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a b V Motherboard
a b K Overclocking
October 15, 2011 9:22:47 AM

kg4icg said:
When you go over 3.2 ghz, turbo is automatically disabled.


where did you read that?

mine is definately showing x21 multiplier when turbo is on
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October 15, 2011 12:52:34 PM

I already know the DRAM Volt helps overclock ram frequency. But does DRAM Volt have anything to do with DRAM timers?

My DRAM Volt is currently set to 1.66... would raising that (within 0.5V of Vtt) help tighten the timers? If not I will lower the DRAM Volt when I reach my maximum stable timers for my current DRAM MHz.
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a b V Motherboard
a b K Overclocking
October 15, 2011 1:05:27 PM

it probably would have something to do with the timings--but as far as i remember you shouldnt go past 1.65v or 1.66v on the ram on the x58 motherboards--i did a fair bit of reading up before getting the parts and must have read it somewhere that it was a no no as i have never went over 1.66v

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October 15, 2011 2:04:20 PM

mcnumpty23 said:
where did you read that?

mine is definately showing x21 multiplier when turbo is on


Did you manually set iy to 21 or have you got it set at 20 and it's going to 21?

Are you watching speedstep kick in when it is not doing anything for which in my case it drops it down to 2.4ghz from 3.8 ghz?

After 3.2 ghz on non extreme chips in which Intel designed into Nehalem that turbo would not activate and published, and from what I have seen in the last 2 years while maintaing 3.8 ghz with my I7-920.
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October 15, 2011 2:07:00 PM

iy=it

wouldn't let me edit a typo.
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a b V Motherboard
a b K Overclocking
October 15, 2011 2:22:55 PM

as far as i remember i set x20 with turbo off and 200bclk--when i put in the latest beta bios i turned turbo on just out of interest and now its 21 x 200bclk

will have to go into the bios and double check
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a b V Motherboard
a b K Overclocking
October 15, 2011 2:30:24 PM

wont let me edit--again

just had a look in the bios--its definately set at x20 non turbo mode and x21 turbo on
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October 15, 2011 3:33:26 PM

mcnumpty23 said:
in the latest beta bios


That's probably why. I always use latest NON BETA bios. =] and in the M.I.T tab with turbo enabled it says x21CPU clock ratio, and without it x21 CPU clock ratio (same)... but 191x21 is plenty anyway (4Ghz). I'm happy with that so I'll just live with turbo disabled.


My question on latency wasn't directly answered tho. Does higher DRAM Volts help lower latency or just increase frequency?
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October 15, 2011 4:00:37 PM

Voltage is not related to latency. For example, my GSkill Ripjaws are at 1.5v across the whole range of it's JDEC selections including XMP. Depending on which selection across from CAS7 up to CAS9. G Skill F3-12800CL9-4GBRL
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