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1800+ with 64k of cache ???

A

Audiofight

Platinum Member
I received an AthlonXP 1800+. The markings on the die confirm this. but, the die itself has nothing printed on it like the older T-Bird chips. When I boot the chip in my roommates system, it posts as a Duron 1066MHz. When I boot it in my system, it posts as an Athlon XP 1066 MHz

CPUID lists it as an Applebred core, .13u, 64k L1 and 64k L2 cache. The logo is that of a Duron.

The worst part is the damaged video on my HTPC when I try using it. I am using an A7N266-VM/AA w/ integrated video and it is all screwed up when this chip is installed.

Is it possible to either short out a bridge on the chip to make it think it is only a Duron or by cracking the core or something?

Or, did the die markings get switched on me?
 
That sounds like a NEW Duron if it only has 64k of L2 cache.

What FSB does it post at and what is the multiplier defaut at?

Got pics?
 
I have fixed the display problems. Apparantly the board corrupted the video driver when I switched processors. By removing and re-installing the WDM drivers, it is fine. I will play with that more this afternoon.

However, I think the L1 bridges were cut to unlock the chip (I think that is how it is done anyways, correct me if I am wrong please) and that is causing it to default to an 8x multiplier.

I have some screenshots of the Windows Hardware screen that reads the chip as an Athlon XP 1.07GHz.

The bios post is that of an Athlon XP 1066MHz. CPUID v1.22 says it to be a Duron. The chip markings (which don't look to come off the die easily) are that of an 1800+

I think, because my board can't adjust multipliers, that the unlocked chip is causing my issues. I think cpuid is just assuming the clock speed must make the chip a Duron instead of an AXP chip.

EDIT: I don't have any way to host my pics though....I can email them if you want to see
 
I find it hard to believe that the markings could all be switched around like that. I don't see how to remove the markings from the chip itself. It is marked as a legit Athlon XP 1800

The person I bought it from said they unlocked it. I am thinking that is where the problem lays; I can't adjust multipliers on my board I am using it on, nor my roommates board.

I am looking at the article on how to connect the pins in order to re-lock the chip back to default settings. I may go that route, but the cache not showing up fully is what confuses me the most.

It shows up with both cpuid and Sisoft Sandra as having 64k L2 cache. It should read 256k....

Anyone have a link to an article on how to unlock the latent cache on the newer Durons? I think I can use that info to reverse engineer this chip back to proper working order.
 
What BIOS revision does your A7N266-VM/AA have? Also, is the motherboard jumpered for 133/133 CPU/memory (yes = 🙂, no = 😱)
 
i had a 2500+ that had a chipped bios so most the cache was disabled and it read as a duron
performance was also less
check your benchmarks
and make sure L2 isn't disabled in the bios or something

good luck
 
Originally posted by: audiofight
I think it is bios 1005....have to reboot and see

The jumpers are set correctly.....133/133
Click to expand...
k, you want to upgrade to 1007. My first guess is you have a Thorton-core 1800+ and you do need 1007 for the Thortons to be fully recognized. BTW did that fan arrive, or did the USPS think it was a bomb and explode it? 😀
 
I am the original person who had the chip, it was working fine when I had it, used to run it at 2400 mhz, 256k L2 cache but that was along time ago since I bought 2500 mobile, it is an 1800 not a duron so don't debate about that
It may be audiofight's board, he said he will try it in his friend's nForce2 board, that is what I had it in anyway, NF7-S v2.0
I did not mod the chip in anyway, I did do the L12 mod on the board though to enable high fsbs.
 
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