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AMD Phenom II X4 955 Black Edition 3.2 GHz Socket AM3 Processor Review

AMD Phenom II X4 955 Black Edition 3.2 GHz Socket AM3 Processor Review - PCSTATS
Abstract: The 3.2GHz AMD Phenom II X4 955 Black Edition is the companies' latest quad-core processor, and it's being released in tandem with a new memory tuning tool called Black Edition Memory Profiles, or B.E.M.P. for short.
 95% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: AMD Apr 30 2009   Julian Apong  
Home > Reviews > CPU / Processors > AMD Phenom II X4 955 Black Edition

Power Consumption Tests, Test System Specs

AMD's latest Phenom II CPUs are built on a 45nm manufacturing process, so we'll see if this, along with the re-architecting of the Phenom II's microprocessor design will reduce power draw compared to Intel's CPUs, as well as previous AMD chips.

Wading through the technical numbers to figure out the differences can be confusing because Intel and AMD report power values in slightly different ways. On paper AMD lists its processors maximum power TDP value, while Intel posts typical Thermal Design Power figures.

Obviously the two measurements of processor power consumption are not quite directly comparable, so to find out how processors stack up in the power efficiency department we need to measure how much power the computer draws while idle, then while in a CPU-stressed state.

To get a more accurate indication of what speeds the processors are currently running at, PCSTATS first disabled a bunch of 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) for both CPU loaded and CPU idle states. These values are measuring an entire system while the processor is running under computational load or idle. 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.

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

Idle power draw for the Phenom II X4 955 Black Edition PC Systemis actually quite good (148W), with a power draw that's close to the other quad-core, Intel's Core i7 920. Since computers tend to spend a lot more time at idle than they do under full processor load, shaving off even a few watts in idle mode can shave a lot of money off an electricity bill, given enough time.

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 (1 Core Load) 175 Watts
AMD Phenom II X4 955 (2 Core Load) 197 Watts
AMD Phenom II X4 955 (3 Core Load) 215 Watts
AMD Phenom II X4 955 (4 Core Load) 236 Watts

All four cores of the Phenom II X4 955 BE were then fired up to full load (236W). To simulate different application configurations, PCSTATS stressed the cores separately and then together. Under a two core load, the Phenom II X4 955 BE did well versus other AMD CPus (197W), but couldn't touch the Intel Core 2 Duos. With all four cores, the 955BE still draws more power than Intel's Core i7 920 (236W vs 158W respectively), and that's with the Core i7 chip using HyperThreading to effectively double its multi-threading capabilities. While AMD has definitely made some gains in terms of power efficiency, Intel's parts are still the winners here.

Prelude to Benchmarks

Over the following page we'll be running AMD's 3.2GHz Phenom II X4 955 Black Edition processor though PCSTATS standard set of gaming, productivity, and multi-threaded processor benchmarks.

There are a wide variety of gaming and synthetic benchmarks here to illustrate what kind of performance boost users can expect from the latest quad-core socket AM3 AMD processor.

Please take a moment to look over PCSTATS test system configurations before moving on to the individual benchmark results on the next several pages.

PCSTATS Test System Configurations
Test System Reference System #1 Reference System #2 Reference System #3
Processor: AMD Phenom II X4 955 Black Edition (45nm) AMD Phenom II X3 720 Black Edition (45nm) Intel Core i7 920 (45nm) Intel Core 2 Duo E8400 (45nm)
Socket: Socket AM3/AM2+ Socket AM3/AM2+ Socket LGA1366 Socket LGA775
Clock Speed: 16 x 200 MHz = 3.2 GHz
14 x 200 MHz = 2.8 GHz 20 x 133 MHz = 2.67 GHz 9 x 333 MHz = 3.0 GHz
Motherboard: Gigabyte GA-MA790FXT-UD5P
(AMD 790FX)
ASUS M4A78T-E (AMD 790GX)*
ASUS M3A78-T (AMD 790GX)
MSI X58 Platinum (X58 Express)

MSI X48 Platinum (X48 Express)

Videocard: ASUS ENGTS250 DK
(Geforce GTS250)
MSI NX8800GTS-T2D320E
(Geforce 8800GTS)
ASUS ENGTS250 DK
(Geforce GTS 250)
MSI NX8800GTS-T2D320E
(Geforce 8800GTS)
Memory:

2x2GB Corsair XMS3-1600C9 DDR3

2x1GB Patriot PDC32G1600LLK DDR3*
2x1GB Corsair Twin2X-8888C4D DDR2
3x2GB Corsair TR3X6G1600C8D DDR3

2x1GB Patriot PDC32G1600LLK DDR3

Hard Drive:

74GB Western Digital Raptor WD740

Optical Drive:

ASUS BC-1205PT-BD

Power Supply:

PC Power & Cooling TurboCool 750W

Heatsink:

Athlon64 K8 Reference Heatsink

Intel Reference 1366 Heatsink Intel Reference 775 Heatsink
Software Setup:

Microsoft Windows Vista Ultimate
AMD Catalyst 9.4
nVIDIA Forceware 182.08

Microsoft Windows Vista Ultimate
AMD Catalyst 9.1
nVIDIA Forceware 169.25

Microsoft Windows Vista Ultimate
Intel INF 9.1.0.1012
nVIDIA Forceware 182.08

Microsoft Windows Vista Ultimate
Intel INF 9.0.0.1008
nVIDIA Forceware 169.25

Benchmarks:
System Benchmarks:
SYSmark 2007
PCMark Vantage
SiSoft Sandra 2009

Calculation B/M:
Super Pi 1.5
wPrime 2.0
ScienceMark 2.3
WinRAR 3.8
Bibble 5

Rendering B/M:
Cinebench R10
POV-Ray 3.7
SPECviewPerf 10

Gaming B/M:
3DMark06
3DMark Vantage
Cyrsis
FEAR

< Previous Page © 2017 PCSTATS.com Next Page >

 

Contents of Article: AMD Phenom II X4 955 Black Edition
 Pg 1.  AMD Phenom II X4 955 Black Edition 3.2 GHz Socket AM3 Processor Review
 Pg 2.  AMD Overdrive 3.0 and Dragon Platform
 Pg 3.  AMD Overdrive 3.0 - Black Edition Memory Profiles (BEMP)
 Pg 4.  Overclocking an Unlocked 45nm Phenom II X4
 Pg 5.  — Power Consumption Tests, Test System Specs
 Pg 6.  System Benchmarks: SYSMark 2007, PCMark Vantage
 Pg 7.  Synthetic Benchmarks: Office Productivity, SiSoft Sandra
 Pg 8.  Calculation Benchmarks: Super Pi, wPrime2.0, ScienceMark2, WinRAR
 Pg 9.  Rendering Benchmarks: Cinebench R10, Bibble 5
 Pg 10.  Rendering Benchmarks: POV-Ray, 3.7, SPECviewPerf 10
 Pg 11.  Gaming Benchmarks: 3DMark Vantage, 3DMark 06
 Pg 12.  Gaming Benchmarks: Crysis, FEAR
 Pg 13.  A Timely Refresh?

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