AMD Bundled Coolers: Blessing Or Curse?
Before the Athlon XPs with Barton cores were even launched, we started getting a deluge of e-mails from readers wanting to know how effective the coolers that ship with boxed Athlon XPs actually are. And yet another outpouring of e-mail basically read: "I've got an Athlon XP 2400+ and want to upgrade to an Athlon XP 2700+. Do I need a new, more powerful cooler?"
Let's first take a look at the maximum thermal-power readings of high-end Athlon XPs with Thoroughbred A, B and Barton cores (source: AMD Data Sheets Processor Model 8 and Model 10):
|Model||Core Frequency||FSB||L2 Cache||Core||Max Thermal Power||DIE Size||Max specific Thermal Power||Max DIE Temp|
|2200+||1800 MHz||266 MHz||256 kB||TB-A||67.9 W||0.80cm²||84.88W/cm²||85 °C|
|2600+||2133 MHz||266 MHz||256 kB||TB-B||68.3 W||0.84cm²||81.31W/cm²||85 °C|
|2700+||2167 MHz||333 MHz||256 kB||TB-B||68.3 W||0.84cm²||81.31W/cm²||85 °C|
|3000+||2167 MHz||333 MHz||512 kB||Barton||74.3 W||1.01cm²||73.56W/cm²||85 °C|
|2400+||2000 MHz||266 MHz||256 kB||TB-B||68.3 W||0.84cm²||81.31W/cm²||85 °C|
The Athlon XP 3000+ with a Barton core has the highest maximum thermal power: 74.3 watts. But since its die is 20 percent larger than high-end models with Thoroughbred B cores, such as those you'll find in the Athlon XP 2600+ and 2700+, its maximum specific thermal power is almost eight watts (or some ten percent) less at 73.56 watts/cm².