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AMD Phenom II X4 965 Black Edition 3.4 GHz Socket AM3 Processor Review

AMD Phenom II X4 965 Black Edition 3.4 GHz Socket AM3 Processor Review - PCSTATS
Abstract: AMD's 3.4GHz Phenom II X4 965 Black Edition processor represents a slight clock speed increase over the previous forerunner, the quad-core 955 Black Edition, and competes with Intel's existing quad-core family of socket 775 CPUs.
 94% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: AMD Aug 19 2009   Julian Apong  
Home > Reviews > CPU / Processors > AMD Phenom II X4 965 Black Edition

Core-by-Core System Power Draw

To determine how much power multi-core processors draw, PCSTATS will be measuring total power consumption what the CPU is in idle and several CPU-stressed states.

To get an accurate measurement, it's necessary to disable AMD and Intel's power saving and CPU clock speed throttling technologies like Cool 'n' Quiet, EIST (speedstep) and C1E power states.

To simulate single-core load a program called Stress Prime (SP2004) is used. PCSTATS set about stressing each processor from one to all cores. This programs gives better insight into different power draw scenarios. The SP2004 program is multi-threaded, allowing individual CPU cores to be stressed by each instance of the program. Total system power consumption was read with the Extech Power Analyzer Datalogger (model 380803). The Extech Power Analyzer is located between the main 120AC supply and the PC's power supply.

Given that motherboards vary across these test systems this is not a "true" measure of CPU power draw alone, but rather a measurement of the total computer system power draw, which we can compare for each specific platforms between the CPU idle and CPU stressed states.

965 Black Edition - 140W TDP

AMD's Phenom II X4 965 Black Edition CPU continues to be manufactured on the 45nm SOI process, but to reach the lofty heights of 3.4GHz AMD has boosted TDP for the chip. The previous heavyweight 3.2GHz Phenom II X4 955 BE ran at 125W; apparently for AMD engineers to achieve the 200MHz speed boost a substantive leap to a 140W TDP was necessary.

Under system idle situations the 965 Black Edition draws a little less than 10W extra, but with all four cores fully loaded the Phenom II X4 965 BE pulls in an extra 30W.

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 Phenom II X3 720 155 Watts
AMD Phenom II X4 955 148 Watts
AMD Phenom II X4 965 154 Watts

Idle power draw for the AMD Phenom II X4 965 Black Edition system is on the high side compared to most of today's processors, 154Watts. This is 6W more than the X4 955BE, which is clocked 200MHz slower. The X4 965 BE is rated at 140W TDP, while the previous flagship processor, the X4 955 BE is pegged at 125W.

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 Phenom II X3 720 (3 Core Load) 213 Watts
AMD Phenom II X4 955 (4 Core Load) 236 Watts
AMD Phenom II X4 965 (1 Core Load) 182 Watts
AMD Phenom II X4 965 (2 Core Load) 207 Watts
AMD Phenom II X4 965 (3 Core Load) 234 Watts
AMD Phenom II X4 965 (4 Core Load) 264

With all four of the AMD Phenom II X4 965 Black Edition's cores loaded to 100%, total system power draw reaches 264 Watts, a new record. The 50W difference between the Phenom II X4 965 Black Edition running four threads and the Core i7 920 running eight threads is a bit disconcerting. The difference between idle and a single core load is a moderate 30Watts. It's clear that AMD is pushing the 'Deneb' architecture a little harder than before.

Remember that these are power draws for the entire system, not just the processor. In most cases a modern 500W power supply won't even break a sweat.

Overclocking is up next, and you won't want to miss these overclocking results...

< Previous Page © 2017 PCSTATS.com Next Page >

 

Contents of Article: AMD Phenom II X4 965 Black Edition
 Pg 1.  AMD Phenom II X4 965 Black Edition 3.4 GHz Socket AM3 Processor Review
 Pg 2.  AMD Overdrive 3.0 and Dragon Platform
 Pg 3.  — Core-by-Core System Power Draw
 Pg 4.  Black Edition Overclocking - Breaking 4.4GHz?
 Pg 5.  Test Specs + 32-bit CPU System Benchmarks: SYSMark 2007
 Pg 6.  32-bit CPU System Benchmarks: PCMark Vantage
 Pg 7.  32-Bit CPU Synthetic Benchmarks: SiSoft Sandra CPU / 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.  Core i5 or Phenom II X4 965 Black Edition?

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