I believe Dan3 showed this example of how AMD's T-bird Thermal design i.e Junction temperature has far more head room than the P4. AMD's 95°C vs P4's 40°C.
Also Note the FSB is 200Mhz on this 1300Mhz T-bird
Milo
Pic of a 1300Mhz Tbird 1.75Vcc 95°C 256k L2 cache 200Mhz FSB
hardocp.com
AMD T-bird spec sheet
amd.com
Taken from above PDF
AMD Athlon™ Processor Model 4 Revision Guide 23614E—December 2000
Preliminary Information
1 Product Marking Identification
1.1 Production Marking
The following figures and tables describe the product marking for the PGA (Socket A) and the card
module (Slot A) versions of the AMD Athlon Processor Model 4.
Figure 1. OPN Example for the AMD Athlon™ Processor Model Notes:
This table lists configurations planned to be supported in volume for this device. Consult the local
AMD sales office to confirm availability of specific valid combinations and to check on
newly-released combinations.
A 0850 A P T 3 B
Note: Spaces are added to the number shown
above for viewing clarity only.
PGA OPN
Max FSB: A = B = 200 MHz, C=266 MHz
Size of L2 Cache: 2=128Kbytes, 3 =256Kbytes
Case Temperature: Q=60ºC, X=65ºC, R = 70°C, Y=75ºC, T=90ºC, S=95ºC
Operating Voltage: S = 1. 5 V, U = 1.6 V, P = 1. 7 V, M = 1. 75 V, N = 1.8 V
Package Type: M = Card Module, A = PGA
Speed: 0850=850 MHz, 0900=900 MHz, 1000=1000 MHz,
1100 = 1100 MHz, 1200=1200 MHz, 1133= 1133 MHz, etc.
Family/Architecture: A = AMD Athlon™ Processor Model 4 Architecture
P4 Thermal rating
support.intel.com
Table 1. Boxed Processor Fan Heatsink Set Points Internal Chassis Temperature (°C) Boxed Processor Fan Heatsink Set Points
36 or less Fan speed constant at lowest fan speed. Recommended temperature for nominal operating environment.
40 Recommended maximum internal chassis temperature for boxed Pentium 4 processor-based systems.
45 or greater Fan speed constant at highest fan speed.
Set points may vary ±1°C. |
