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3870k ~preliminary overclocking

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Kristijonas said:
Why only 3.2ghz? I read it should overclock to 3.5-3.8 stable. Also where are gpu clock settings? Also have you updated BIOS version?
Click to expand...

I just set it up, it takes time to get a feel for a new motherboard and test the settings ...

just upgraded the bios from F2 to F5

now stability testing:
3.4GHz 800nb 633gpu
vcore: 1.3625
apu vddp: 1.205
nb vid: 1.2125
vdim: 1.505


this is higher than either of the two itx motherboards could go btw

damn F5 bios removed nb freq option
this results in about 500MB/s less mem bandwidth 🙁
 
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I am just waiting for my new ssd to arrive and just got a new psu also. I will do some testing with looser memory timings to see if I can get memory over 1333. I know it runs at 1866 9-9-9 timings as it was rock stable for 3 years on another board. I am wondering if my Asus f1a75-i deluxe sets aggressive second timings and these need loosening. I have looked everywhere for some kind of bios setting guide for this board but not found anything yet.

Sent from my Galaxy Nexus using Tapatalk
 
I don't understand all these posts about RAM frequency problems. Why shouldn't your 1866mhz RAM just work at 1866mhz without having to tweak them?
Soulkeeper, what did you mean by
damn F5 bios removed nb freq option
this results in about 500MB/s less mem bandwidth
Click to expand...
Please keep us updated about your success with overclocking. Especially GPU clock!
 
If I am right, isn't it an AMD issue? With Intel, 1866 ram will default to that, whereas on an AMD board, they default to 1333 and you have to set them up to manufacturers spec in order to get the speed up to 'stock'.

Got my gpu clock up to 800mhz fairly easily. THe only thing I can't overclock is the cpu. I have tried a manual multiplier and even if its at x31 it still doesn't want to go into windows. Should I be turning any other options on/off?
 
I thought the gpu stock speed was 800?

It seems quite a lot of people are struggling with the 3870k and memory settings. I wonder if it needs slightly more relaxed timings than other a8 cpu's? Maybe some new bios's will arrive soon.

Sent from my Galaxy Nexus using Tapatalk
 
Nope, its 600 as default. Well it was on mine anyway. I am sure it can be pushed a little more though but I haven't really tested it out properly.
 
I will use my PC for gaming and internet, so gpu clock is the thing I care most. Please let me know about your failures and successes 🙂 And yes, the default gpu clock is 600mhz officially. Can't wait to receive my signature PC 🙂
 
Pretty much similar usage to you...but I will probably play around with Premiere Pro as well. It will be interesting to see how it copes with the Mac Pro 8 core that I have at the office! I would imagine that rendering might take a little longer 🙂!
 
As mentioned earlier, my gpu was set to turbo and when I looked in gpuz it was clocked at 800mhz. I left it at 600mhz and ram was OK up to 1866. I have now got my ram stable at 1600 9-9-9-24 even though its rated at 7-7-7-20 but with the CPU at 3.3ghz and gpu on turbo at 800mhz. Quite happy with this all on auto voltages. Can't decide which will give better performance, CPU 3.3 gpu 800 mem 1600 9-9-9-24 or CPU 3.3 gpu 800 mem 1333 7-7-7-20 or finally CPU 3.3 gpu 600 mem 1866 9-9-9-24. Decisions! I am only using it for a media centre at the moment so probably overkill but am bit streaming high def audio and using 1080p 24. Is this overkill?

Sent from my Galaxy Nexus using Tapatalk
 
mattyc, not neccesarily an overkill. Comfort build that will serve you for many years.

Does anyone know if it's possible to run 2000mhz RAM at 2000mhz with llano?
 
Kristijonas said:
mattyc, not neccesarily an overkill. Comfort build that will serve you for many years.

Does anyone know if it's possible to run 2000mhz RAM at 2000mhz with llano?
Click to expand...

only with bclk raising

at 100 bclk the highest mem mult i've seen on any A75 motherboard is for 1866 speeds
possibly a hard limitation of the lynx platform

so you'd set 1866 then start raising the bclk

also, as some mention above the problem with 1866 memory timings is likely due to the fact that the SPD for fast 2133 memory usually only stores timings for 2133 speed, and something lower like 1333 or 1600
so you end up having to guess on timings for 1866

i'm gonna reboot and try for more speed now, 3.4GHz is 100% stable here
 
if llano is son of PII core then I'd say I expect the newer process to take it beyong 4. But there must be some factor in it that's limiting its OC potential. Although GPU side seems to OC very well from your results, impressed about that.
 
Soulkeeper said:
only with bclk raising

at 100 bclk the highest mem mult i've seen on any A75 motherboard is for 1866 speeds
possibly a hard limitation of the lynx platform

so you'd set 1866 then start raising the bclk

also, as some mention above the problem with 1866 memory timings is likely due to the fact that the SPD for fast 2133 memory usually only stores timings for 2133 speed, and something lower like 1333 or 1600
so you end up having to guess on timings for 1866

i'm gonna reboot and try for more speed now, 3.4GHz is 100% stable here
Click to expand...

Well I'm hoping that my Gigabyte A75M-UD2H with latest BIOS version will be able to work at at least 1866mhz at stock timings (CL9).
Why don't you try overclocking CPU to 3.8 and then test it if it's stable? I've heard that the maximum completely stable spot should be from from 3.5 to 3.8. Though I will probably just set it to 3.4 or 3.5 myself.
 
Here is an update on my progress:

tried 3.6GHz and 3.5GHz although I could get them stable enough to benchmark I could not make them 100% stable

I tried with voltages up to these:
gpu 1.215
nb 1.2375
cpu 1.4625

more cpu voltage doesn't seem to help stabilize over 3.4GHz, as "normal" 1.4125v is fully stable with 3.4GHz
I'm not as aggressive with my voltages as some ... but 1.4+ "normal" seems high already
This could be as high as I take the cpu speed for awhile.
I did leave this system running overnight at 3.4GHz, I suppose it's possible it "burnt in" at that speed, and now that's my ceiling.

I tried a few different GPU speeds
633MHz fully stable
700MHz fully stable
850MHz system rebooted randomly
800MHz stable so far

I tried 133MHz bclk with cpu/mem set to my known stable settings.
The system would not post and I had to clr cmos
Possible the PCH needed more voltage, or 134MHz is needed to auto kick in the next divider,
but it was slightly spooky when the system would not post and did not recover itself
I really don't want to play with oddball bclk frequencies, I want to maintain reasonable rdtsc accuracy and not have to reset my clock every day.
Also it's very hard to enter the gigabyte bios, often times it finishes posting before the keyboard is initialized.

here are some photos showing what changed in the gigabyte bios from F2 to F5:

before
IMG_0023.JPG

after
IMG_0030.JPG


before
IMG_0027.JPG

after
IMG_0031.JPG



They replaced "CPU Northbridge Freq." with "DRAM E.O.C.P."
which is akin to the asus f1a75-i and it's auto oc crap, all it does is calculate the bclk for you and reset everything else you just set, causing a headache. The mb manual still contains "CPU Northbridge Freq.".
The memory section received more sub settings: mostly drive stength related. The kind of thing that are of no use to 99% of people, i've never heard of these being used by anyone on other motherboards.

with these settings:
3.4GHz 1866mem 800gpu 600nb(assumed due to bios removal)
1.4125v 1.505v 1.215v 1.2125v respectively
While running the unigine tropics benchmark my system pulls up to 177W according to kill-a-watt
and 43W idle
 
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Anyone know the specific names of voltages on my Asus itx deluxe board for the north bridge and gpu? I still can't get 1600 mem stable, I thought I had but it always bsod even with massively loosened timings. Thinking of cranking all relative voltages up to maximum acceptable voltages just to see if it is ever going to be stable. I can't find a good over locking guide for my motherboard anywhere.

Sent from my Galaxy Nexus using Tapatalk
 
nyker96 said:
if llano is son of PII core then I'd say I expect the newer process to take it beyong 4. But there must be some factor in it that's limiting its OC potential. Although GPU side seems to OC very well from your results, impressed about that.
Click to expand...

GF 32nm is pathetic. What these chips should be is an easy 4GHz with PhII voltages, not a regression from them.
 
yeah, these chips do struggle to compete with core2 45nm parts

hell my Q9450 ran at 3.2GHz @ 1.18v
had a E5400 that did 3.6GHz @ 1.28v
and those where low overclocks by most reports

llano needs 1.4+ volts just to hit 3.2GHz in most cases

for some reason they are still mysteriously enticing tho ... can't really put my finger on why
 
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With adequate voltage I found 3.5ghz to be very easy to get.... 3.6ghz+ was unstable no matter the voltage, I even went up to 1.61 volts to no avail... Don't bee afraid to go to 1.475 volts or so in the 3.4-3.5ghz range.

It takes longer, but just go one tick at a time until you're 100% stable. GPU clocking was also very easy.

Sometime this weekend I'm going to try an up the BCLK to get some better memory bandwidth for gaming and stuffs.

-soth
 
ctsoth said:
With adequate voltage I found 3.5ghz to be very easy to get.... 3.6ghz+ was unstable no matter the voltage, I even went up to 1.61 volts to no avail... Don't bee afraid to go to 1.475 volts or so in the 3.4-3.5ghz range.

It takes longer, but just go one tick at a time until you're 100% stable. GPU clocking was also very easy.

Sometime this weekend I'm going to try an up the BCLK to get some better memory bandwidth for gaming and stuffs.

-soth
Click to expand...

what gpu voltage are you using ? 800MHz right ?

1.6v !?! that's socket A 130nm memories there !
🙂
 
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I hate to say it, but i'm not gonna get any more speed out of this crappy platform.

I Tried several times to get 133+ bclk, but this gigabyte motherboard (just like the other 2 A75 motherboards) would not do it. I've yet to see anyone on these forums pull it off.

gigabyte needs to fix a few things also:
it takes 4+ resets of the system before the del key is recognized and you are allowed to enter the bios
if you enter a bad setting (ie: 133+ bclk) the system will not boot forcing you to clr_cmos (which is located in a bad spot)
there is no page-up/down option for selecting voltages faster in the bios
So every time I try a different setting in an attempt to get 133+ bclk I end up spending 30+ minutes dealing with this crap.

Also what is the point of a dual bios if you can't save known/good profiles and just use a key combo like insert button to boot/load them ? ie: a fallback mechanism
I mean wtf ? insert button for loading default/safe fallbacks was the greatest thing a few years ago.
why remove it ?

3.2-3.4GHz == maximum reasonable expectation for llano imo
1866MHz memory is the fastest memory it'll use if you value the contents of your hard drives and don't love data corruption.


Here's to hoping trinity is worth a damn for serious overclockers.
 
Ok, I think I figured out a few things here
finally managed to get 133+ bclk

VGA does not work with 133+
hdmi does
also AHCI must be disabled or the hd's disapear
also it's near impossible to get in the bios using a USB keyboard, using a tradition PS/2 keyboard solves that issue

so now i've just got to purchase an HDMI LCD If I want to run my memory at it's rated 2133 speed ....
or put an addon card in
 
That sucks, I had hoped that Gigabyte A75M-UD2H is the best motherboard out there for overclocking 🙁 Well my PC is already ordered, at least I'll know to be careful. Thanks for updating us with information Soulkeeper. I will have my signature PC probably tommorow. I will let you know how it works for me.
 
BLCK overclocking seems to be worthless. I can do 3.4GHz (34x100) and 850MHz on the GPU. I think I will leave it here. It isn't worth the headaches to try and up the RAM speeds beyond 1866MHz.
 
Kristijonas said:
That sucks, I had hoped that Gigabyte A75M-UD2H is the best motherboard out there for overclocking 🙁 Well my PC is already ordered, at least I'll know to be careful. Thanks for updating us with information Soulkeeper. I will have my signature PC probably tommorow. I will let you know how it works for me.
Click to expand...

I do think it is the best FM1 board, it's just the A75/llano experience still has limitations

I'm seriously considering buying an LCD now, just so I can run a 133 bclk, very strange situation.
I could probably live without AHCI.

also, This is a good thread don't let it die 🙂
 
I have been trying all weekend and cannot get my ram stable at 1600. It bsod anything above 1333 even if I pump high volts through it. My ram is corsair xms 1600 rated for 7-7-7-20. I think my Asus board is setting the secondary timings to tight, I have set nb volt to 1.4 ram at 1600 9-9-9-35 and it still bsod. Where can I find out the secondary timings for my ram? This ram ran on last Intel board at 1866 8-8-8-24 all day long. Its just either the 3870k or my Asus itx board.
Has anyone else got memory problems on Asus f1a75-i deluxe. I am running newest BIOS 602.
Thanks in advance.

Sent from my Galaxy Nexus using Tapatalk
 
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