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Strange OC problem: do i have a a64 mobile?


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Hello,

 

I have a NF3 UT board. Great board, bit i am having strange overclocking problems with my amd64 3400+ Clawhammer 1 MB Co revision OEM (just bought this cpu).

This proc runs stable until around 260 x 9.5 (2.48 Gh), at standard voltage. Upping cpu voltage (until 2.75 volt) does not overclock better; htt is 3x and i have a enermax 550 watt.

 

265 x 9.5 but also 228 x 11 do not work stable, there seems to be a cpu limit at 2.5 Ghz. So the memory (OCZ 3700EB) is also not the problem (the same OC problem occurs with 228 x 11).

 

But....cpu-z and sandra do identify this cpu as a a64 mobile??? Perhaps that is a explanation for this strange overclock behaviour. How can i, without removing the cooler, know what kind of a64 cpu i do have? Thanks for replying.

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Originally posted by rodemannetje

Hello,

 

I have a NF3 UT board. Great board, bit i am having strange overclocking problems with my amd64 3400+ Clawhammer 1 MB Co revision OEM (just bought this cpu).

This proc runs stable until around 260 x 9.5 (2.48 Gh), at standard voltage. Upping cpu voltage (until 2.75 volt) does not overclock better; htt is 3x and i have a enermax 550 watt.

 

265 x 9.5 but also 228 x 11 do not work stable, there seems to be a cpu limit at 2.5 Ghz. So the memory (OCZ 3700EB) is also not the problem (the same OC problem occurs with 228 x 11).

 

But....cpu-z and sandra do identify this cpu as a a64 mobile??? Perhaps that is a explanation for this strange overclock behaviour. How can i, without removing the cooler, know what kind of a64 cpu i do have? Thanks for replying.

 

Here's my 3200 DTR just got in today. CPU-Z identifies it the same as the attachment. Install and run this program this will tell you your CPU string...........http://cbid.amdclub.ru/files/cbid73t.zip

 

Post your attachment once your done. The circle in my attachment is my CPU stepping.

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I have run this program. The code is the same, except that mine shows AP at the end. Also version, stepping and revision are different.

Because i also see announce date: 6 januari 2004, i assume i do not have a mobile (the mobile is introduced in july or something like that, wasn't it?).

 

Well, thanks for replying, but i still have this somewhat strange overclock behaviour. Any one has a solution for this?

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Originally posted by rodemannetje

I have run this program. The code is the same, except that mine shows AP at the end. Also version, stepping and revision are different.

Because i also see announce date: 6 januari 2004, i assume i do not have a mobile (the mobile is introduced in july or something like that, wasn't it?).

 

Well, thanks for replying, but i still have this somewhat strange overclock behaviour. Any one has a solution for this?

 

Well the AP stands for a CO core which does not OC as well as the CG's like mine ending in AR.

 

What bios are you running? Using the 10/15 here. Here's a pic of my temps as well.....no problem with voltage.

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Hi!

Looks like I got the exact same CPU like you, RacerX. But I cant get it to such an insane speed like yours ... im stuck at 240*10 (or 300*8 actually ;) ).

Could you please post your BIOS config? I think that would really help me! Thanks in advance!

 

BTW: I think that programme doesnt recognize mobiles ... well, at least i DO hope so, because thats what i found on extremeoverclocking.com:

 

3200+: ADA3200AEP5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.0 GHz, x10

 

but thats hwat the CPU itself says:

3200+: AMA3200BEX5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.0 GHz, x10

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@ rodemannetje

 

You ran the voltage all the way up to 2.75 on that processor?

 

And it's still alive?

 

C'mon now.

 

If you had a mobile it would be the CG core and overclock

better than what this 3400+ CO is basically doing.

 

These A64's will give you all they got and then fall flat. There

is nothing gradual about the way they hit the limit.

 

What you might do is set the LDT at 2 and see if you can

gain some.

 

Give that 3700EB 2.9V of Vdimm.

 

What have you done as far as memory timings ?

 

Make that 3700EB run at 7-3-3-2.5 and see if that

will help.

 

What voltage are you actually running to that processor ?

 

What type of heatsink & fan are you using here.

 

We need a lot more information in order to help.

 

Please ease over to the usercp and make us up a

 

signature listing all of your hardware etc.

 

http://www.dfi-street.com/forum/showthread...=&threadid=1541

 

 

Cheers.

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Okay, i have edited my profile, and will try smartgardian tonight. I am now assuming i have a regular amd64 3400+ 1 MB Clawhammer rev. AP (so the memory only runs at 1T).

 

The memory is not the problem i think; the problem occurs with 10x250 (2.5 Ghz)as also with 228 x 11 (2.508 Ghz).

260 x 9.5 is stable (2.48 Ghz)!!

Upping voltage does not inprove stability. Cpu temps are quite low: idle around 32 C, load about 40 C.

 

Htt is 3, so that also should be okay.

 

Core voltage reading in the bios are a bit higher.

1.55 volt in bios reads out as 1.58 volt.

1.55 volt + 104% reads out as 1.65 volt.

1.55 volt + 110% reads out as 1.78 volt.

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