Overclocking an i7 920 D0 - 4.7GHz

Big.Wayne · 20 Apr 2009 at 02:03

rjkoneill said:
today i have been busy giving my chip a thrashing

after the untimley demise of my p6t deluxe [RIP] and with it my old 920 and memory

Hey rjkoneill,

I'm not sure if I'm reading this right but are you saying you toasted a £500 of hardware? :eek:

Ducky Spud · 20 Apr 2009 at 12:06

rjkoneill said:
also - futuremark ORB system seems to pick my chip up as a 975 when its overclocked past 4.5GHz

hope they fix this

You've just got a chip they aint even making yet!! Thats impressive

haha

Nice work though, D0 stepping is making the 920 a bargain compared to the other i7 CPUs!

Infernum · 20 Apr 2009 at 14:28

Helios1234 said:
Doubt it as most boards would be limited to around 222mhz bclk if you're lucky (although I've seen 230 on a DFI) with a max multi of 21x. That would only give you about 4.6ghz. I would have thought that what Rjkoneill got is pretty much the maximum you can get on an i7 920.

How come my p6t deluxe says I can raise it to 500bclk?

Helios1234 · 20 Apr 2009 at 14:37

dmarcisz said:
How come my p6t deluxe says I can raise it to 500bclk?

If you check any x58 motherboard review or check out what people have achieved, 220 is about the limit even though upto 500 is selectable. This is where the i7 965 comes in handy for the overclock you're looking for because of it unlocked multi.

malccy · 20 Apr 2009 at 18:14

Sorry but can you tell me please what bclk is?

Good clock btw.

Helios1234 · 20 Apr 2009 at 19:11

It's the base clock i.e the core i7 equivalent to the fsb.

rjk · 20 Apr 2009 at 19:44

Big.Wayne said:
Hey rjkoneill,

I'm not sure if I'm reading this right but are you saying you toasted a £500 of hardware?

yes - unfortunatly the vrm's blew on my p6t deluxe

taking out my £200 ram and my £250 chip

so thats a grand total of around £700 worth of top end hardware that got RMA'd back to intel/asus/corsair

good because it meant i could get a D0 920 as a replacement

bad because it meant i was without my PC until the issue was sorted

w3bbo · 20 Apr 2009 at 19:50

Helios1234 said:
It's the base clock i.e the core i7 equivalent to the fsb.

Changing the BCLK frequency also changes the uncore components such as the QPI (Quick path interconnect) which is the direct replacement for the FSB. Increasing/decreasing the baseclock also increase the memory controller frequency too (much the same as the FSB did in the past).

For all intents and purposes tho you can consider the bclk to be the FSB when overclocking as it acts the same way...even though it's not really the fsb

.

Nice clock Rich btw

CK61938 · 20 Apr 2009 at 19:52

now that is sweet overclocking my friend

I would just be happy with about 4.0GHz anyway...seeing as I am having to RMA the Deluxe V2 (which I hope will be replaced), in the meantime I will buy the P6T SE and see how that performs with the D0 stepping of the 920 (currently sitting on my shelf as we speak lol)...but well done on getting it to 4.66GHz

DavyBoy · 20 Apr 2009 at 20:07

Awesome results man.. I am glad that I decided to hang on for the D0 Stepping i7 CPU to become available...

I will be picking one up in another 2 weeks, to finish my i7 build.. I have got my x58 mobo (gigabyte EX58-UD5) and I have also got 6GB of Corsair Dominator 1600MHz RAM... I am really looking forward to finishing this rig!!!

Audigex · 20 Apr 2009 at 21:29

That's a hell of an overclock - about 75% at the top end.

Any pics of your WCing etc?
Edit: Ignore that - I'm too thick to see the BUILD LOG in your sig :-P

rjk · 20 Apr 2009 at 21:54

the thermochill triple is hung out of the back of my case atm

should be mounting it internally soon but it will require me to take my whole system apart

rjk · 21 Apr 2009 at 21:11

managed to get a 4GHz profile stable at 1.18v :eek:

Infernum · 21 Apr 2009 at 21:48

rjkoneill said:
managed to get a 4GHz profile stable at 1.18v

Cool

my D0 arrives tommorow

But after failing to overclock my C0 could you please tell me what you changed the qpi voltage to? (I think its called that, its the other voltage that needs to be changed with cpu volt but I'm not sure of the name)
I have a p6t deluxe btw so does that mean bios settings have a different name?

lankymorley · 21 Apr 2009 at 21:54

rjkoneill said:
managed to get a 4GHz profile stable at 1.18v

That's brilliant man! What load temps are you getting with that profile?

Bito · 21 Apr 2009 at 22:27

And the profile is ...... ?

Well done.

rjk · 21 Apr 2009 at 23:58

dmarcisz said:
Cool my D0 arrives tommorow But after failing to overclock my C0 could you please tell me what you changed the qpi voltage to? (I think its called that, its the other voltage that needs to be changed with cpu volt but I'm not sure of the name)
I have a p6t deluxe btw so does that mean bios settings have a different name?

i used to have that board - its fairly easy
what cooler are you using?

lankymorley said:
That's brilliant man! What load temps are you getting with that profile?

around 60'c max
its about the same temps as i get at 4.3ghz/1.28v whilst gaming

so pretty good as a nice 'failsafe' profile

Infernum · 22 Apr 2009 at 09:38

rjkoneill said:
i used to have that board - its fairly easy
what cooler are you using?

I got the Noctua NH-U12p Se1366 in push/pull. Was hoping to be able to get a 4ghz - 4.2ghz OC, does this sound possible?

magicroundabout · 22 Apr 2009 at 09:51

if you have a D0 stepping CPU it'll be simple.
Mine is running @ 1.296v @ 4.2ghz

not tried for more as i already feel this is a massive clock from stock 2.66ghz

Infernum · 22 Apr 2009 at 13:44

magicroundabout said:
if you have a D0 stepping CPU it'll be simple.
Mine is running @ 1.296v @ 4.2ghz

not tried for more as i already feel this is a massive clock from stock 2.66ghz

If I put the cpu voltage to that amount, then would I need to change anything else? Or would I only need to change stuff if I put the cpu voltage higher?
I am using 1600mhz patriot viper @ 1.65v btw. So would I be okay to put volt at 1.66? aas it doesn't let you do it at 1.65, although the mobo said that anything above 1.65 is dangerous?