Review Index:

AMD Athlon 1.4 GHz and Duron 950 MHz Review

Author: Ryan Shrout
Subject: Processors
Manufacturer: AMD

Test Setup and Overclocking

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Let’s jump right into things here. I am sure you all are aware what the Athlon Thunderbird and Duron processors offer the user, so I won’t bother describing (again and again) about the core and technology of the Thunderbird. Besides, the Athlon MP has changed much of that.

The test setup, that you see below, is pretty standard. I decided to use a couple different motherboards, one AMD 760 and one KT133A. Using the new king of the AMD 760 hill, the Epox 8K7A and one of the better KT133A motheboards, the Asus A7V133 I have lined up what I think will give a clear indication of the speed increase from 1.33 to 1.4 GHz as well as how the Duron 950 MHz fares.

Test System Setup


AMD Thunderbird 1.4 GHz

AMD Thunderbird 1.33 GHz

AMD Duron 950 MHz


Epox 8K7A AMD 760

Asus A7V133 KT133A


1 x 256MB Corsair PC2100 DDR SDRAM

1 x 256MB Corsair PC133 SDRAM

Hard Drive

20.5GB 7200 RPM Western Digital EIDE

Video Card

Visiontek GeForce 3

Video Drivers

Detonator 11.10

Operating System

Windows 98 SE


As you might guess, the Duron 950 MHz overclocked much more (on a percentage basis) than the 1.4 GHz Thunderbird. Using the KT133A for overclocking, the Duron was able to reach 1.3 GHz very comfortably without any freezing or errors. Pushing the Athlon was a bit more of a hassle. By raising the FSB and lowering the multiplier, I was able to find its limit, with standard air cooling, to be 1.65 GHz. This is certainly a great bit of overclocking. While I haven’t looked much into, the folks at AthlonOC seem to think the steppings and codes are behind it all. I suggest you give them a look and see what they say about it.

January 5, 2013 | 05:58 PM - Posted by Anonymous (not verified)

Was that 1.4GHZ Athlon overclock to 1.65GHZ done with a voltage bump, or with stock voltage? Thanks

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