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To: tejek who wrote (128031)	2/21/2001 9:35:40 PM
From: milo_morai	Read Replies (2) \| Respond to of 186894

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.