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AMD Phenom II X4 965 Black Edition 3.4 GHz Socket AM3 125W Processor Review

AMD Phenom II X4 965 Black Edition 3.4 GHz Socket AM3 125W Processor Review - PCSTATS
Abstract: In most other respects the quad core 3.4GHz Phenom II X4 965 Black Edition 125W revision remains the same. The architecture is "Deneb", the socket is AM3 and the CPU still features 6MB of shared L3 and 512KB of L2 cache for each of the four cores.
 81% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: AMD Nov 04 2009   Julian Apong  
Home > Reviews > CPU / Processors > AMD henom II X4 965 Black Edition C3

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 power saving and CPU clock speed throttling technologies like Cool 'n' Quiet, EIST (speedstep) and hardware 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. 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.

Phenom II X4 965 Black Edition - Now just 125W!

AMD's original Phenom II X4 965 Black Edition had a TDP of 140W, which translated into some outright scary power consumption numbers under load. AMD has hauled its flagship processor back into the lab, and with a bit of tinkering has managed to get its overall power draw down to 125W, saving countless carbon footprints in the midst. It's time to see how much real-world effect these changes have made.

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 i5 750 124 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 240e 122 Watts
AMD Athlon II X2 250 128 Watts
AMD Athlon II X3 435 128 Watts
AMD Athlon II X4 620 130 Watts
AMD Phenom II X3 720 155 Watts
AMD Phenom II X4 955 148 Watts
AMD Phenom II X4 965 - 125W TDP 150 Watts
AMD Phenom II X4 965 - 140TDP 154 Watts

While there's a definite improvement in the Phenom II X4 965 Black Edition (125W)'s idle power draw performance, it's still pretty close to the Phenom II X4 965 Black Edition 140W total system power draw measurement. Intel's main rival is the Core i5 750 processor, that PC system idles at a reasonable 124W.

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 i5 750 (4 Core Load) 169 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 240e (2 Core Load) 153 Watts
AMD Athlon II X2 250 (2 Core Load) 163 Watts
AMD Athlon II X3 435 (3 Core Load) 183 Watts
AMD Athlon II X4 620 (4 Core Load) 195 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 - 125W TDP
(1 Core Load)
176 Watts
AMD Phenom II X4 965 - 125W TDP
(2 Core Load)
195 Watts
AMD Phenom II X4 965 - 125W TDP
(3 Core Load)
218 Watts
AMD Phenom II X4 965 - 125W TDP
(4 Core Load)
243 Watts
AMD Phenom II X4 965 - 140W TDP
(4 Core Load)
264 Watts

Under load, we finally get to see the reduced TDP of the Phenom II X4 965 Black Edition (125W) in action. Overall power consumption has dropped from 264W to a more reasonable 243W, but on balance that's still a lot of electricity consumption! The revised Phenom II X4 965 Black Edition 125W is second only to Intel's Pentium D 940 when it comes to power draw under load, and the Pentium D 940 was able to double as a space heater in its spare time. When compared to the Core i5 750's 169W total system power draw, even the 125W TDP Phenom II X4 965 Black Edition still has a long ways to go.

Over all both the old and new Phenom II X4 965 Black Edition processors are still pushing total system power consumption towards the 250W region. Hopefully AMD can get on the 32nm wagon quickly enough that its future processors will make it under 100W TDP.

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

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Contents of Article: AMD henom II X4 965 Black Edition C3
 Pg 1.  AMD Phenom II X4 965 Black Edition 3.4 GHz Socket AM3 125W Processor Review
 Pg 2.  — Core-by-Core System Power Draw
 Pg 3.  125W Black Edition Overclocking - Breaking 4.0GHz?
 Pg 4.  CPU System Benchmarks: Sysmark 2007
 Pg 5.  CPU System Benchmarks: PCMark Vantage
 Pg 6.  CPU Synthetic Benchmarks: SiSoft Sandra Processor
 Pg 7.  CPU Synthetic Benchmarks: SiSoft Sandra Memory
 Pg 8.  CPU Calculation Benchmarks: Super Pi
 Pg 9.  CPU Calculation Benchmarks: wPrime2.0
 Pg 10.  CPU Calculation Benchmarks: ScienceMark2, WinRAR
 Pg 11.  CPU Rendering Benchmarks: Cinebench R10, Bibble 5
 Pg 12.  CPU Rendering Benchmarks: POV-Ray 3.7
 Pg 13.  CPU Rendering Benchmarks: SPECviewPerf 10
 Pg 14.  CPU Synthetic Gaming Benchmarks: 3DMark Vantage, 3DMark 06
 Pg 15.  CPU Gaming Benchmarks: Crysis
 Pg 16.  CPU Gaming Benchmarks: FEAR
 Pg 17.  Same Performance, More Energy Efficient

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