The first Athlon hit the market on 21th of August 1999 and impressed many enthusiasts by it's performance. The AMD K6-2 was not bad but suffered from a slow floating point unit (FPU) and didn't scale well beyond 500MHz ~ 550MHz. AMD needed something new and the Athlon was perfect!

Basically the A... > Read more

This AMD Athlon 650 Slot A processor has OPN code K7MTR51B with an A-marking. The A means it's equipped with the Pluto core. If you have a model with C it has the Argon core. Pluto is 180nm and used in the 550MHz to 850MHz models with 512KB off-die L2 cache. Argon did it's job in 500MHz to 700MHz At... > Read more

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In early 2000 the world was presented with the Athlon 800 with Slot A interface. This Athlon is based on the Orion core and runs it's L2-cache at just 320MHz (2/5th of the clock-frequency on these models). This hurts performance a bit. The later models with the Thunderbird core have half the L2-cach... > Read more

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[table border=0][tr][td]The first 1GHz chip from AMD wasn't socketed but appeared as this Slot A model. AMD launched the Athlon 500 in August 1999 and continued to raise clockfrequencies up to 1000MHz in March 2000. The 1GHz mark was magical in the days but ... > Read more

Technically this slot A model is the same as this socket A (462) Athlon 850. Both have the 'Thunderbird' core with 256KB on-die full speed L2 cache. I did not benchmark the Slot A version of the 850MHz 'Thunderbird'. It should perform identical except for di... > Read more

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A proper 800MHz part; made in Q3 of the year 2000 and made for socket A. Athlons from early 2000 often use the much bigger slot A connector.

In it's day this 800MHz piece was a normal 'good performer'. Not the fastest part available, but by far not a budget part. Especially compared to the more e... > Read more

A normal AMD Athlon CPU, one you could buy in the stores in the end of the millennium year.

The AMD Athlon is known to run quite hot. They did compared to the Pentium III. The Pentium 4 'Willamette' is much cooler in idle modus but in stressed they consume a lot of power, too. Fact that the Athlo... > Read more

A regular Athlon 900 on a 100MHz (DDR200) bus but, according to the sticker, used to be property of S3 Graphics.... > Read more

Introduced on June 5, 2000 along with all S462 Athlon models between 600MHz and 1000MHz. You would pay a high premium for owning the fastest CPU back in 2000 if you bought this CPU. It's 'new price' was $990! If you opted for the 900MHz model you would just pay $589. Almost 50% saved .

Notice t... > Read more

A strong performer. This is the B-variant which uses a 100MHz (DDR200) FSB. The C-variant uses the faster 133MHz (DDR266) bus but still runs at 1200MHz.

The 1200MHz model is solid and reliable while staying within cooling proportions. Models like the 1333 and 1400 needed better cooling and stretc... > Read more

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The AMD Athlon 1000 on socket A saw it's daylight at 31 October 2000, about 6 months after the launch of the 1000MHz Athlon for Slot A. Note that this CPU is different compared to the first model as it has 256KB on-die L2 cache instead of 512KB off-die L2 cache. Almost everyone was excited about the... > Read more

The 1333MHz Athlon is the second fastest Athlon 'Thunderbird' CPU one can get. Back then it offered enough power leaving the Pentium 4 nowhere in many applications, especially with price/performance ratio in mind.

Back in the day the high clocked Athlon's ran quite hot although many newer CPU's h... > Read more

This CPU is identical to this Athlon 1400 except that is has been made 3 weeks earlier and that someone removed the four pads/cushions that support the heatsink.... > Read more

A regular AMD Athlon 'Thunderbird' running at 1100MHz using a 100MHz FSB. AMD also made Athlon's up to 1400MHz that still used the 100MHz FSB to be able to offer CPU's that could run on older motherboards that didn't support a 133MHz (DDR266) FSB. However, at these higher speeds the 133MHz FSB versi... > Read more

The fastest Athlon 'Thunderbird' out there. At the time this was considered a real hot CPU in terms of power consumption/heat output. People ofted blamed AMD for having hot running CPU's but in the years after the Athlon 1400 many new CPU's were released by both AMD and Intel which ran hotter.

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With it's 1300MHz clock and 100MHz (DDR200) FSB this is the smaller brother of the Athlon 1400C.
Just like with the 1400MHz model this was considered a 'hot-running' CPU. Back in it's day it's thermal properties we're highly debated in forms of fanboyism. ... > Read more

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