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AMD Phenom II X4 965 BE Processor Specifications
| Processor Frequency: | X4 965: 3.4GHz |
| Core Multiplier: | X4 965: Unlocked |
| L1 Cache Sizes: | 64K of L1 instruction and 64K of L1 data cache per core (512KB total L1 per processor) |
| L2 Cache Sizes: | 512KB of L2 data cache per core (2MB total L2 per processor) |
| L3 Cache Size: | 6MB (shared) |
| Memory Controller Type: | Integrated 128-bit wide memory controller * |
| Memory Controller Speed: | 2.0GHz with Dual Dynamic Power Management (unlocked) |
| Types of Memory Supported: | Support for unregistered DIMMs up to PC2 8500 (DDR2-1066MHz)/ PC3 12800 (DDR3-1600**) |
| Theoretical Memory Bandwidth: | Up to 25.6GB/s |
| HyperTransport 3.0 Link: | One 16-bit/16-bit link @ up to 4.0GHz full duplex (2.0GHz x2) |
| HyperTransport 3.0 Bandwidth: | Up to 14.4GB/s |
| Total Processor Bandwidth: | Up to 36GB/s total bandwidth |
| Packaging: | Socket AM3 938-pin organic micro pin grid array (micro-PGA) |
| Fab location: | GLOBALFOUNDARIES Fab 1 module 1 (Dresden) |
| Process Technology: | 45-nanometer DSL SOI (silicon-on-insulator) technology |
| Approximate Transistor count: | ~ 758 million (45nm) |
| Approximate Die Size: | 258 mm2 (45nm) |
| Max Ambient Case Temp: | 65° Celsius |
| Nominal Voltage: | 0.875 - 1.425 Volts |
| Max TDP: | 140 Watt |
*NOTE: MC configurable for dual 64-bit channels for simultaneous read/writes
**NOTE: Above DDR3 10666 (1333 MHz) only one DIMM per channel is supported.
Test Configuration and Power Measurements
We tested the AM3 Phenom II X4 955 BE in the following system configuration:
- Motherboard: ASUS M4A79T
- Memory: OCZ3ALVE16004GK
- CPU: AMD Phenom II X4 965
- Cooler: OCZ Vendetta 2
- Memory: OCZ2RPR10664GK**
- Graphics Card: PowerColor MM RADEON 4890
- HDD: HDD: WD 1500ADFD (Raptor)
- SSD: Intel SSDSA2MH080G15E (80 GB)
- Optical Drive: HP dvd1070i-H01 6 Multiformat DVD writer
- PSU: OCZ EvoStream (720W)
** The memory was run at 1600 MHz 8-8-8 with the NB set to 2.4 GHz according to the AOD BE profile specifications.
Benchmark Overview
- Microsoft XP-32 Pro / Windows 7 64 (RC 7.100)*
- SiSoft Sandra 2009 SP4
- CPU-Z 1.49
- Caligari TrueSpace 5.1
- Caligari TrueSpace 7.5 / VRay 1.51
- Cinebench 9.5
- Cinebench 10
- DIEP Chess
- MainConcept H.264
- DVD-Shrink 3.2
- Nero 9 Recode
- VirtualDub 1.76 with DivX 6.8
- Crysis "Demo"
- Devil May Cry 4
- Unreal Tournament3
* We used a fresh install of XP-32 Pro as well as Windows 7 -64-bit (7100) For comparison purposes, the all benchmarks were run in WinXP 32
Power Measurements
Looking at system power consumption is interesting to a certain degree, however, for all practical purposes we are more interested in the isolated CPU power consumption. To estimate the latter, we used the same power measurement setup as in previous reports. Briefly, we used a Fluke 80i-410 AC/DC current probe in combination with a Wavetek Meterman 30XR multimeter to measure current through the isolated +12V supply lines feeding into the CPU VRM. To increase granularity of the measurements, we ran the supply lines in a triple loop through the clamp. The clamp itself was calibrated using a BK Precision model 1692, 30V 40 A DC power supply. Since there is a temperature dependency of the probe, we monitored the zero-current offset at the beginning of each measurement as well as at the end of each run. If the values drifted we retook the measurements. Despite these precautions there are possible deviations of the read-out from the real current, however, these errors mostly affect the lower (processor idle) measurements. We estimate that the errors should not be more than 10% at the lower end of the data and less than 5% in the mid and higher data range. Moreover, since the same procedures were applied to all processors tested, there may be an offset in the absolute numbers, however, the relation of the individual cores to each other with respect to power consumption should be fairly accurate.
Having learned our lessons regarding power measurements on the Nehalem platform, we verified that the 4+1 phases of the VRM receive their power from the 12V auxiliary power plug by ohming out the connections between the MOSFETs and the plug on one side and the MOSFETs and CPU socket on the other side. In theory, showing the electrical continuity does not exclude additional supply power coming in from the 24 pin main eATX connector, however, we also checked there and got "open circuit" readings. This means that we can with reasonable certainty claim that the entire CPU power, including cores and NB/IMC (but excluding I/O power) is derived exclusively from the auxiliary 4-pin 12V input. Details are given on this page.
In addition to the method outlined above, we used a modified PSU to run the 12V line directly through the Wavetek Meterman and read out the current. Both methods gave identical results.
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