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AMD Athlon 1000 K7100MNR53B A ORION 512kb 1000Mhz SLOT A CPU

This CPU is an AMD Athlon 1000 SLOT-A 1000 Mhz K7100MNR53B A ORION 512kb CPU and was pulled from a working system.

This is a very rare CPU these days, The 512 Kb Cache version (ORION) is the fastest SLOT-A Athlon CPU.

Some people prefer the Thunderbird over the Orion and some the Orion over the Thunderbird.

My thoughts on this: The Orion is the last "true" SLOT-A CPU, while the Thunderbird architecture was intended to be used with the upcoming Socket A 462.
AMD ported the Thunderbird back to the SLOT-A, which one can easily see by looking at the cache modules on the PCB. The Orion has two of them, left and right from the CPU while the Thunderbird has
it´s cache integrated in the CPU die. However the two pits in the heatsink are still in place, but not used anymore since the modules are no longer on the PCB.

That is why I personally prefer the Orion over the Thunderbird since it is the last true SLOT-A while the Thunderbird SLOT-A is a backport of the Socket A 462 Thunderbird CPU.

Be sure to check your mainboard CPU support to ensure your board is able to run the CPU.  

It was tested on a SLOT A mainboard and is working fine. The thermal compound has been professionally applied new, since after 22 years the original paste had dried out, like with every other SLOT A CPU these days.

Under the picture you can find the specs of this CPU.



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General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD Athlon
CPU part number
  • AMD-K7100MNR53B A is an OEM/tray microprocessor
Frequency1 GHz / 1000 MHz
Bus speed200 MHz
Clock multiplier10
PackageCard Module
SocketSlot A
Introduction date6-Mar-00
Price at introduction$1299
Architecture / Microarchitecture
Instruction setx86
MicroarchitectureK7
Processor coreOrion (Model 2)
CPUID622
Manufacturing process0.18 micron
Die102mm2
Data width32 bit
The number of CPU cores1
The number of threads1
Floating Point UnitIntegrated
Level 1 cache size64 KB 2-way set associative instruction cache
64 KB 2-way set associative data cache
Level 2 cache size512 KB 2-way set associative backside cache running at 333 MHz
MultiprocessingUniprocessor
Extensions & Technologies
  • MMX instructions
  • Extensions to MMX
  • 3DNow! technology
  • Extensions to 3DNow!
Low power features
  • Halt state
  • Stop Grant states
  • Sleep state
  • Probe state
Integrated Graphics Processing Unit
None 
Electrical / Thermal parameters
V core1.8V ± 0.1V
Minimum/Maximum operating temperature0°C - 70°C
Typical/Maximum power dissipation60 Watt / 65 Watt
Notes on AMD Athlon 1 GHz
  • Actual bus frequency is 100 MHz. Because the processor uses Double Data Rate bus the effective bus speed is 200 MHz.