A64 3500+ Overclock

Goody_GTI

Goody_GTI

Goody_GTI

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Hi all, I'm new to the overclocking business and i have read a few guides and im preety sure that i now understand the basics of it all. I was mainly after a few figures for the settings that people with a similar setup to mine have used to run their cpus at and have been stable etc. My hardware is as follows:

A64 3500+ Newcastle core running at stock 2200mhz
1gb Geil Ultra PC4000 ram
ASUS A8N-SLI Deluxe mobo

It would be nice to get it running at around 2400mhz+ :)

Any help would be much grateful!


Goody_106
 
SpudMaster said:
i used to run my old 3500+ at 2.5ghz with 1.52v in a dfi ultra-d
Click to expand...

Sounds pretty similar to mine. Would do 2.5Ghz on stock volts but just seemed to hit a brick wall there.

Haven't seen many of these do over 2.5Ghz.
 
use to run it at 2.4ghz on a coolermaster hyper6 heatsink. but was limited to only 220mhz fsb then due to lack of pci n agp locks on the board i was using with it. Then i got watercooling and a dfi ultra-d board and clocked it to 2.5ghz. I could get it too 2.6ghz but required quite a lot of volts and and wasnt really happy running it at that. never did do extensive stability testing at 2.6 so cant say how stable it actually was
 
goody_106 said:
Hi all, I'm new to the overclocking business and i have read a few guides and im preety sure that i now understand the basics of it all. I was mainly after a few figures for the settings that people with a similar setup to mine have used to run their cpus at and have been stable etc. My hardware is as follows:

A64 3500+ Newcastle core running at stock 2200mhz
1gb Geil Ultra PC4000 ram
ASUS A8N-SLI Deluxe mobo

It would be nice to get it running at around 2400mhz+ :)

Any help would be much grateful!


Goody_106
Click to expand...

Mine does 2530Mhz (230x11) with 1.55v using a Zalman 9500 and Akasa 80mm Ultra quiet case fans (x4).

I usually run it at 2400Mhz though (240x10) so I can keep my RAM at PC3200 speeds with tight timings 2-2-2-6 on the 5/6 divider.
 
just got the A64 3500+ venice and after reading the the forum to get the basics have pushed it to 2.75ghz(250 x11) at 14.5volt, this is running stable on a basic air fan with temps just under 40C when gaming though i don't know if there is any diffrence between the venice and newcastle models.
 
Maqua said:
just got the A64 3500+ venice and after reading the the forum to get the basics have pushed it to 2.75ghz(250 x11) at 14.5volt, this is running stable on a basic air fan with temps just under 40C when gaming though i don't know if there is any diffrence between the venice and newcastle models.
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Lots of difference between a venice and newcastle not least the process shrink to 90nm (IIRC) and the reduction in default volts required (Newcastles were 1.5v)

Also, I'm sure it was a typo, but 1.45v sounds about right. 14.5v would fry it :o Nice clock there btw.
 
Mate ive got my 3500+ running at 2.7ghz atm, upped volts by 0.2 and have had it at 2.8. Using stock cooler and temps never go above 45, around 43 at load. Guess ive bin a lil lucky with my chip ???
 
Thanks for everyones response, been a good help! I have just tried to play with a few settings in the bios and used the following settings:

HT Freq. - 4x
Cpu Freq - 220
Cpu Multiplier - 10x
Cpu Voltage - 1.45v

Which should give it a clock of 2200mhz (same as standard just using different values) but when i tried to rebbot i got a POST saying CPU overclock failure:(???

I was intending to try this and then gradually step up the Cpu freq.

Have i done something wrong/stupid?! I have a sneaky feeling it could be the voltage??
 
I have sorted the voltage out now, put it back to 1.6v and now it works ok at 2.2ghz and my ram has also gone up to 220mhz.

Gonna gradually build up the frequency to see what i can get put of it :p
 
Right im slowly stepping up the cpu freq and i have got it running at 2.3ghz now, but it is slowing my ram down??

As soon as i go over 220mhz it drops it to:

225 * 10 = 187mhz?

230 * 10 = 191mhz?

but at 220 * 10 the ram runs at 220mhz

Anyone have any suggestions as to why its doing this
 
Have got it running nicely @2.4ghz now, everything seems preety stable. have been testing it for a while using prime and seems ok. Thanks for your help everyone :)
 
goody_106 said:
Right im slowly stepping up the cpu freq and i have got it running at 2.3ghz now, but it is slowing my ram down??

As soon as i go over 220mhz it drops it to:

225 * 10 = 187mhz?

230 * 10 = 191mhz?

but at 220 * 10 the ram runs at 220mhz

Anyone have any suggestions as to why its doing this
Click to expand...

Thats the RAM divider coming into play. Now you've managed 240Mhz, with a RAM divider of 333Mhz (or 5/6 or however it is specified in our BIOS) your RAM should now run at 200Mhz and be totally in spec.

At 220Mhz your RAm will have been running at 220 and may or may not have caused a problem. My ballistix runs at 220 but I have to loosen the ram timings or in bombs.....(Cas latency usually)
 
Ye i figured that out after playing around with a few bios settings :D

I had the max memclock set to auto so it was running the ram at 333 like u said, put it back up to ddr400 and the rams running at 240mhz now
 
just posting a link to cpu-z verification:


linky


I'v got it running at 2415mhz using 230*10.5.

Do my ram timings seem ok to everyone ?

been running it for a few days now seems stable no errors with prime95, and im still using stock cooling :p

will purchase a freezer 64 pro soon tho and push it some more
 
Goody

I don't recommend running an A64 on a .5 multiplier. I can't remember where I read it, but I read that half multi's can cause problems with A64 on board memory controller.

I think your better off sticking with the 11x multi or the 10x multi.

220x11 is 2420Mhz so will give you approximately the same overclock. Your RAM may be able to run 1:1 with the HTT too with looser timings.

Try it and see.

I've got mine 3500+ newcastle to 230X11 = 2530Mhz for benchmarking with a 166/333Mhz RAM divider.
 
keep the multi as high as poss (11) this puts less stress on the board and cpu.

A64s dont need the bandwith gained by raising the htt, they just want clockspeed.

Also always use a divider to get low latencies, these are more benificial than ram bandwith
 
Defcon5 said:
keep the multi as high as poss (11) this puts less stress on the board and cpu.

A64s dont need the bandwith gained by raising the htt, they just want clockspeed.

Also always use a divider to get low latencies, these are more benificial than ram bandwith
Click to expand...

I'm at a loss to explain why you would think a high multi would put less stress of the board and CPU? :confused:

I agree with low latencies though, they do help my benchmark scores far more than increased RAM frequency (to a point).
 
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