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Old School 939 o/c help

ChucKcasH

ChucKcasH

ChucKcasH

Associate
Joined
29 Oct 2003
Posts
216
Hi folks, I need views on how to overclock a 4000 939 single core chip please. I have 2gb of OCZ ddr500 working fine and able to o/c the previous 3500 no probs, but I have one major issue with this 4000 - I cannot increase the fsb at all; not even by 1fsb. I can however, run the memory at the full 250mhz bandwidth with the chip at stock multi. This gives a nice boost in benchies and real world performance, but am I missing any o/c fun? I don't think the chip is borked as it runs sweet unless I mess around with it. Mobo is an A8R32-MVP Del.

cheers
 
Slightly confused about the DDR 500. I was under the impression that the fastest DDR RAM was PC 3200 (400 FSB)

Ignore me I've just seen PC3500 :o
 
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Try putting the hypertransport multi down to 3 put fsb on 250 in sync with ram and give cpu 1.45v up north bridge volts a bit aswel see if that works
 
mattyj1085 said:
Try putting the hypertransport multi down to 3 put fsb on 250 in sync with ram and give cpu 1.45v up north bridge volts a bit aswel see if that works
Click to expand...

The hypertransport should be at 4 as 4*250=1000 which is safe and set the divider to 400mhz as that will overclock the ram and cpu together.
 
Cheers folks - HT is only selectable in Mhz (200/400/800/1ghz) and max voltage is 1.4 with some extra coming by the northbridge. I cannot get it past x4 multi at 250fsb and HT at 200mhz, with cpuz strangely reporting the mem speed to be 200 but 250 in bios....most strange. Its not the end of the world if I can't get it clocked but its just really weird how it won't post with even a minor change.

Any ideas?
 
Set FSB to 250 (3GHz) or 234 (2.8GHz)

CPU Multiplier X12

HTT to X3 (400MHZ)

Voltage to 1.45

Lock PCI Bus to 33.33

Set PCI-E Frequency to 101MHZ

Thats If Its a San Diego Core :)

Also, Your RAM will need more voltage usually - most OCZ are good for 2.9/ 3.0 V

Link to previous success with this chip:

http://forums.overclockers.co.uk/showthread.php?p=7538384#post7538384

oc3gcopy-1.jpg


Hope This Helps ;)
 
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Cheers Chap - will give it a go although the core voltage is the only thing I may have trouble with.

Sorted - 3ghz it is then :P Will try a few benchies but it looks rock solid. Cheers Andy
 
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No worries mate. Its much easier when all the hours of fiddling about have been done for you eh? :D

As you can see from the post link, these were a batch of chips (San Diego) that were basically rebadged FX57's so 2.8GHz was an absolute doddle to achieve as long as your RAM (500MHZ preferable) was up to it, which yours definitely is.

Try at 3GHz and if its a bit wobbly, drop to 2.8. That will still be faster than an FX57 of the same clock speed because you'll have an FSB of 234 which means wider memory bandwidth! :)

OH HAPPY DAY!!!!!!!!!!!!!!!!!! :)
 
All stable at 3ghz with an afternoon up to now benching with no errors. Temps are pretty damn good too with it reporting 31 on idle and about 43 on load - well impressed :D

Cheers for the help and How to ;)
 
Sorry Dude - I've been away plus I've no way of posting them :( Suffice to say though, it does 33k in 3d2k1 with the 1950XT which strangely seems to be the bottleneck now...oh well, there's always an excuse to get an upgrade :D
 
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