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AMD Phenom II X3 720 Black Edition 45nm Socket AM3 Processor Review

AMD Phenom II X3 720 Black Edition 45nm Socket AM3 Processor Review - PCSTATS
Abstract: Phenom II X3 720 Black Edition processor is one of the first Phenom II processors, and it's got a secret that has PCSTATS very excited.
 78% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: AMD Feb 28 2009   Julian Apong  
Home > Reviews > CPU / Processors > AMD Phenom II X3 720 Black Edition

System Power Draw Tests

AMD's latest Phenom II CPUs are built on a 45nm manufacturing process. It will be interesting to see if this, and re-architecting of the Phenom II's microprocessor reduce power draw significantly compared to Intel's Core 2 Duo and Core 2 Quad CPUs.

As always, before any power measurements are taken the CPU power saving and clock speed throttling technologies like Cool 'n' Quiet, EIST (speedstep) and C1E power states are disabled. PCSTATS then set about stressing each core of the processor one by one, until all cores were loaded.

For this we used Stress Prime (SP2004). The total system power consumption, measured in Watts, is monitored with an Extech Power Analyzer Datalogger (model 380803). The power meter is located between the main 120AC supply and the PC's power supply so it measures the entire computer system, the difference between CPU loaded and unloaded states is the key value to pay attention to.

Total System Idle Power Draw
Processor Total System Power Draw
Intel Pentium 4 540 150 Watts
Intel Pentium D 840 165 Watts
Intel Pentium D 940 168 Watts
Intel Core 2 Duo E6600 117 Watts
Intel Core 2 Duo E6750 123 Watts
Intel Core 2 Duo E8400 131 Watts
Intel Core i7 920 144 Watts
AMD Sempron 3600+ 120 Watts
AMD Athlon64 4000+ 163 Watts
AMD Athlon64 FX-60 127 Watts
AMD Athlon64 X2 4800+ 143 Watts
AMD Athlon64 X2 5000+ 156 Watts
AMD Athlon64 FX-62 168 Watts
AMD Athlon II X2 250 128 Watts
AMD Phenom II X2 550 BE

145 Watts

AMD Phenom II X3 720* 155 Watts
AMD Phenom II X3 720** 128 Watts

* DDR2 based system, ** DDR3 based PC system.

Running three Phenom II cores in DDR2 memory mode draws a bit more power than PCSTATS likes to see, but fortunately a switch to a socket AM3 motherboard and DDR3 memory mode reduced power draw signficantly in idle mode, bringing the AMD Phenom II X3 720 Black Edition in line with the Core 2 Duo E8400 processor.

Total System Stressed Power Draw - All Cores/Threads
Processor Total System Power Draw (All Cores)
Intel Pentium 4 540 223 Watts
Intel Pentium D 840 (2 Core ) 240 Watts
Intel Pentium D 940 (2 Core Load) 253 Watts
Intel Core 2 Duo E6600 (2 Core Load) 156 Watts
Intel Core 2 Duo E6750 (2 Core Load) 163 Watts
Intel Core 2 Duo E8400 (2 Core Load) 158 Watts
Intel Core i7 920 (8 Thread Load) 213 Watts
AMD Sempron 3600+ 148 Watts
AMD Athlon64 4000+ 172 Watts
AMD Athlon64 FX-60 (2 Core Load) 196 Watts
AMD Athlon64 X2 4800+ (2 Core Load) 173 Watts
AMD Athlon64 X2 5000+ (2 Core Load) 207 Watts
AMD Athlon64 FX-62 (2 Core Load) 235 Watts
AMD Athlon II X2 250 (2 Core Load) 163 Watts
AMD Phenom II X2 550 (2 Core Load) 181 Watts
AMD Phenom II X3 720* (1 Core) 182 Watts
AMD Phenom II X3 720** (1 Core) 157 Watts
AMD Phenom II X3 720* (2 Core) 196 Watts
AMD Phenom II X3 720** (2 Core) 176 Watts
AMD Phenom II X3 720* (3 Core) 213 Watts
AMD Phenom II X3 720** (3 Core) 190 Watts

* DDR2 based system, ** DDR3 based PC system.

When stressed the power consumption of the Phenom II AMD Phenom II X3 720 Black Edition was 190W in DDR3 mode , and broke the 200W barrier when using higher-wattage DDR2 memory. It seems like AMD doesn't have a lot of headroom with this generation of processors, we may not see Phenom II processors clocked higher than 3.4-3.6GHz or so.

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Contents of Article: AMD Phenom II X3 720 Black Edition
 Pg 1.  AMD Phenom II X3 720 Black Edition 45nm Socket AM3 Processor Review
 Pg 2.  Enter the Dragon (Platform)
 Pg 3.  Socket AM3 and compatibility
 Pg 4.  — System Power Draw Tests
 Pg 5.  45nm Overclocking Potential?
 Pg 6.  Test System Specs / Benchmarks: Sysmark, PCMark Vantage
 Pg 7.  32-Bit CPU Synthetic Benchmarks: Sandra 2009 Processor / Memory
 Pg 8.  32-Bit CPU Calculation Benchmarks: Super Pi, wPrime2.0
 Pg 9.  32-Bit CPU Calculation Benchmarks: ScienceMark2, WinRAR
 Pg 10.  32-Bit CPU Rendering Benchmarks: Cinebench R10, Bibble 5
 Pg 11.  32-Bit CPU Rendering Benchmarks: POV-Ray, 3.7, SPECviewPerf 10
 Pg 12.  32-Bit CPU Synthetic Gaming Benchmarks: 3DMark Vantage, 3DMark 06
 Pg 13.  32-Bit CPU Gaming Benchmarks: Crysis, FEAR
 Pg 14.  Conclusions: World's First Triple-Core CPU

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