Athlon 1g cpu ---200fsb or 266 fsb?

[cheric4]

I ordered an athlon cpu from Tigerdirect and they sent me one. My question is how can i tell if it's a 200fsb or 266fsb version? I wanted the 1g/200fsb for my abit kt7 m/b.

 

[pcmodem]

Howdy,
Take a look at this Anandtech review URL:

http://www.anandtech.com/showdoc.html?i=1441&p=3

Note the two lower pictures of the ""old" Athlon 1.1 Ghz" and the ""new" Athlon 1.33 Ghz":

1. The CPU die on the 1.10 Ghz reads A1000AMT3B (Strange, it should read A1100AMT3B)
2. The CPU die on the 1.33 Ghz reads A1333AMS3C

The final digit "B" on the upper and "C" on the lower denotes the version Athlon Tbird you possess with respect to FSB speed. Revision B are 200 Mhz FSB and the Revision C are the 266 Mhz FSB.

Good luck!
-PCM

 

[cheric4]

PCModem,

Thanks for the help.....

 

[cheric4]

PCModem,
What would happen if you use a cpu with 266fsb on a abit 7kt (200fsb)?

Thanks for the help.....

 

[zzzz]

You won't be able to use the full speed if it is not unlocked. ( not a big deal, you can do it by connecting L1 bridges.)

 

[ScrapSilicon]

<< PCModem,
What would happen if you use a cpu with 266fsb on a abit 7kt (200fsb)?

Thanks for the help..... >>

it would default to 750mhz at 100 clock/200DDR not sure if just unlocking would fix the bus speed but OCing your newly made &quot;750&quot; causes issues with USB drivers/peripherals

 

[cheric4]

With an abit KT7 (has fsb and mutiplier adjustment in the Soft Menu III), do you still have to connect &quot;the dots&quot; on the cpu?

 

[pcmodem]

Heya,
Are you referring to running that same 266FSB 1Ghz Thunderbird CPU? If so, that CPU ships locked at a 7.5 multiplier (1 Ghz = 7.5 x 133).

If you put that CPU into a 200FSB motherboard like you suggest, Scrap Silicon is correct, the board will recognize the CPU's 7.5 multiplier and run it at the default 200 Mhz FSB, yielding a performance decrease for your CPU as if it were a 750 Mhz CPU (750 Mhz = 7.5 x 100).

In order to get around this, yes, you would have to &quot;connect the dots&quot; as you write, the L1 briges. Alternately, you could just increment the FSB speed from 100 Mhz (200Mhz DDR) to 110 Mhz (220 Mhz DDR) or so, which will also yield a noticable performance gain. A mild 10% overclock like this should not adversely affect the stability of your PCI and IDE devices.

Nevertheless, a 10% overclock will not return that 1 Ghz CPU running at 750 Mhz to 1 Ghz performance (750Mhz x 1.1 = 825 Mhz). Best thing to do is order a CPU designed for your board.

I don't recommend connecting the L1 bridges for those not used to soldering, as the chances of ruining the CPU are high, which would kill your ability to RMA the CPU. Many novices try the safer pencil-graphite stick method instead, but this is also not recommended as graphite connections do not last, they must be reapplied, and the last thing you want to do is remove your heatsink every 6-12 months and reapply graphite.

L8r,
PCM