my phenom 965 c3 clocking

[gareth170]

That's brilliant I think. Can't estimate how long I've spent on mine, but I have a suspicion I started last Autumn and I'm far from finished.

Happy with 3.9 or hoping to take it higher?

well maybe go higher at some point. but for now im happy as it is

 

[gareth170]

But I still run at 3.9GHZ, I can get it IBT stable on 1.375V,

have u tryed prime95 on blend at that too mate?

some people say prime95 on blend may find the system unstable, where IBT doesn't (i won't say any names, )

 

[gareth170]

Just wondering what cpu cooler you guys are using?

Thermalright Ultra-120A with 2 fans

 

[gareth170]

Would you recommend that over the Corsair H50? I was really tempted with Corsair but if the Thermalright Ultra-120A is better then I will get that.

Corsair H50 is better but i will never use a watercooling because if it leaks it'll kill the system..

if u don't mind using a watercooler then go for it.

 

[gareth170]

That has crossed my mind.
I just started a new thread because I would have thought if that did happen then Corsair would be responsible for the damage caused.
I cant find anything on their site though.

Corsair as got abit strong on that now

u will need to prove that it wasn't a user error and even then Corsair could still say no.

 

[gareth170]

I'm running at 3.9GHZ, where i've done more than 10 loops.
I don't need your "expert advise"...
I just don't see the need to justify myself to you or anyone else.

its not about justifying yourself. people are only trying to help mate.

if your o/s crashs and doesn't boot back up due to a unstable system or even a slightly unstable system, you'll be ****** off because you'll need to reinstall everything. or another thing is if your doing something important and if the system crashs.

if a game or app that u use doesn't crash the 1st, or 2nd time, doesn't mean it won't crash sometime in the future if the system is unstable or slightly unstable.

 

[gareth170]

does everybody know if the cpu-nb voltage is safe at 1.25v? the stock is 1.1v

the cpu temp hasn't changed, its still 48c under load. i thought the cpu temp goes higher if u up the cpu-nb voltage..

edit: i've found this on amd site...


http://game.amd.com/us-en/content/pdf/AMD_Dragon_AM3_AM2_Performance_Tuning_Guide.pdf

 

[gareth170]

AMD's overdrive allows for 1.55V on the NB.

i know but for air cooling amd recommands 1.50v max for the cpu-nb and cpu voltages, see the picture..

 

[gareth170]

now i'm at 3.8ghz, 2.6ghz NB, 7-7-7-20 ram timings. prime95/ibt/linx stable

now trying for 7-7-7-20 1t

 

[gareth170]

I thought the C3 stepping was the answer to getting the illusive 4GHz which was a problem for the previous stepping. Isn't that the case? :/

4ghz can be done but it needs 1.5v+..

its better to have 3.8-3.9ghz with a high NB frequency, than a 4ghz core clock with a 2.2ghz nb

 

[gareth170]

Air struggles to breach 4ghz... the 955/965 like to be kept cool if you can keep them under 50c then you can get 4ghz+ primstable at reasonable voltage (1.45v).. if you are pushing 55c - 60c then you are going to need 1.5v+ although the CPU's should be fine up to 1.55v.. if you can keep the temperatures sub 40c then there are examples on XS of 965 running prime @ 4ghz at around 1.375v

common stable air clocks are 3.9 - 4ghz, water can reach 4.2ghz... vcore very much dependant on temperature

true

but that also depends what stock vid u get.

also said its better to have a 3.8-3.9ghz core clock with a high NB frequency, than a 4-4.2ghz core clock with a 2.2ghz nb

 

[gareth170]

3.8ghz, 2.6ghz NB, 7-7-7-20 1t..

 

[gareth170]

weird today prime95 found a error in 3 minutes with the same settings as above...

i know its not the cpu clock because the system didn't crash. its ether nb or ram. i've set the ram timing back to 7-7-7-20 2t and im running prime95 again. so far its fine.

 

[gareth170]

Temperatures?
These Phenom II's throw a wobbly at certain temperatures.

same 47-48c

as i said i know its not the cpu clock because the system didn't crash

 

[gareth170]

my ram default settings are 1600 7-7-7-20 1.7v but with 1.7v i can't run them at 7-7-7-20 , so i was told 1.75v would be fine, is that right? 7-7-7-20 is stable with 1.75v

 

[gareth170]

yeah cant't see any problem with that, quite nice timings and speed there for the ram tbh

thanks

yeah my ram are Patriot amd gamer 'PGS34G1600LLKA, i had to rma the first set because it wouldn't run at 1600. the replacement are better.

so far it's done 4hours on prime95 , blend

 

[gareth170]

Hi, where you read the temps from, cpu core ? or CPU, i use CPUID hardware monitor, its got cpu core temps ?, using a Arctic extreme cooler is not very good at all, its idle is 40c on all cores, and loads 60c, can only get it to work on 3.7ghz without crashig in Intel Burn Test, just ordered a Scythe Mugen 2 and will try again, will be happy it to run 3.8ghz on stock voltage (which is 1.4v correct ?)

well all amd temps on they site are based on the tcase, (overall cpu temp). everest gives you the cpu temp and the core temp.

40c is alittle high for idle and 60c is to high for load on stock voltage but it also depends on your room temp..

it sounds like u have the similar chip as me, if its fully stable at 3.7ghz on stock voltage i would say leave it on that for now then try 3.8ghz when u get the cooler. but tbh 3.8ghz on stock voltage is very difficult with a 1.4v vid chip. a slight bump up on the voltage will easyly make it stable

 

[gareth170]

after reading a few , seems like most people are getting 3.8ghz at stock voltage, aint 1.4 v stock voltage.

theres different stock voltages for the same model. e.g, ours stock voltage is 1.4v but another person 965 c3 chip maybe 1.35v or 1.375v..

the 1.375v vid chips can do 3.8-3.9ghz on stock voltage. the 1.4v vid chips find it difficult doing 3.8ghz on stock voltage.

 

[gareth170]

what voltage was yours at 3.8ghz stable ? and NB voltage speed , thats all you change right, multipler, cpu voltage, nb voltage 1.25v, 2600mhz thats all right ?

Thanks

core is 1.425v for 3.8ghz (but that drops down to 1.408v when idle (on my motherboard)), cpu-nb i've upped to 1.275v for fully stable at 2600mhz, cpu multipler x19

 

[gareth170]

oh hai!

I have my pII 965 and Gigabyte ud5, with corsair ddr3 4gb ram coming tommorrow.

I have bought the Titan Fenrir cooler.

http://www.overclockers.co.uk/showproduct.php?prodid=HS-008-TI&groupid=701&catid=57&subcat=

How should I start overclocking? baby increases? I don't want to do it in lol.

Whats this about nb ghz? am I best to attach a fan to the nb?

start off with just upping the cpu multipler then when you've find the max on stock voltage , bump the vcore by + 0.025v then repeat the first step.

the cpu-nb is inside the cpu so just keep your eye on the temps