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AMD Phenom II X3 720 (BE) vs Intel Core 2 Duo E8400

Mini Review

AMD Phenom II X3 720 (BE) advantages

  • The CPU is 23% faster when running multi-threaded tasks. The performance advantage depends on specific task. In some of them the microprocessor could be up to 53% faster.
  • Memory performance of the processor is better.
  • The Phenom II X3 720 CPU features 3DNow! technology. The 3DNow! instruction set allows the microprocessor to execute certain floating-point operations faster, and thus boost performance in games and software, that support the instructions. These instruction are obsolete now, and only some old games and software used them.
  • This CPU has clock multiplier unlocked. As a result, the microprocessor can be easily overclocked on most motherboards to get higher performance. Be aware that overclocking voids warranty of the processor.

Intel Core 2 Duo E8400 advantages

  • Single-threaded performance of the Intel E8400 is better.
  • The CPU includes SSSE3 and SSE4.1 instructions.
  • The E8400 is 39% more energy efficient than the Phenom II X3 720.

720 vs E8400 performance comparison

The charts in the section below demonstrate relative performance of Phenom II X3 720 (BE) and Core 2 Duo E8400 microprocessors in different kinds of applications. To calculate displayed numbers we averaged results for several benchmarks for each specific program type. Consequentally, performance in individual benchmarks may be worse or better than what you see in the charts on this page. The 'Overall performance' calculates an average of all-around performance benchmarks, and benchmarks, specific to each task type.
Single-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1
 
1.42
 
 
Higher is better
Multi-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1.23
 
1
 
 
Higher is better
Memory-intensive applications
2
1.6
1.2
0.8
0.4
0
 
 
1.34
 
1
 
 
Higher is better
Overall performance
2
1.6
1.2
0.8
0.4
0
 
 
1.09
 
1
 
 
Higher is better

  - AMD Phenom II X3 720 (BE)       - Intel Core 2 Duo E8400

Please see the "Benchmarks" tab for full list of benchmarks, demonstrating performance difference between Phenom II X3 720 (BE) and Intel E8400 in various types of programs.


720 vs E8400 power consumption comparison

Thermal Design Power
200
160
120
80
40
0
 
 
107W
 
65W
 
 
Lower is better
 

Detailed side by side comparison of AMD 720 vs Core 2 Duo E8400 specs can be found in the "Specifications" tab. Much more detailed comparison of low level features of both processors is located in the "CPUIDs" tab.


Pros and Cons summary

Phenom II X3 720 (BE) Core 2 Duo E8400
General recommendations:
Insignificantly faster in general,
Can be effortlessly overclocked
  General recommendations:
Performs somewhat faster in single-threaded tasks,
Supports SSE4.1 instructions,
Lower power

Drawbacks:

Not as fast in single-threaded applications,
Does not support some instructions,
Requires significantly more power
 

Drawbacks:

A bit slower performance in all application types

Similar processors

Phenom II X3 720 (BE) Core 2 Duo E8400
 

Similar microprocessors use the same socket and architecture as AMD 720 and Core 2 Duo E8400.

Jump to:
  • Benchmarks
  • CPUIDs
  • Comments
 

Popular comparisons:

More comparisons

Compare AMD Phenom II X3 720 (BE) with...

Other Core 2 Duo CPU:

Any CPU:


Compare Intel Core 2 Duo E8400 with...

Other Phenom II X3 CPU:

Any CPU:


Note: To see differences with any CPU, type in any combination of the following into the "Any CPU" field: manufacturer name, full or partial family name, model number, part number, core name, socket name, operating frequency, bus speed (must have FSB suffix), and the last level cache. Here are some valid searches:

  i5-3570K
  Intel Celeron 2 GHz
  K10
  Pentium 4 800FSB
  AMD 3.3GHz 8MB

Specifications

Please visit AMD Phenom II X3 720 (BE) and Intel Core 2 Duo E8400 pages for more detailed specifications of both microprocessors.

 AMD Phenom II X3 720 (BE)Intel Core 2 Duo E8400
Market segmentDesktop
ManufacturerAMDIntel
FamilyPhenom II X3Core 2 Duo
Basic details
Model number720E8400
CPU part numberHDZ720WFK3DGIAT80570PJ0806M
EU80570PJ0806M
Box part numberHDZ720WFGIBOXBX80570E8400
BXC80570E8400
BX80570E8400A
Introduction dateFebruary 9, 2009January 7, 2008
 
CPU features
Core nameHekaWolfdale
Platform nameDragon 
MicroarchitectureK10Core
Technology (micron)0.045
Data width (bits)64
SocketSocket AM2+ / Socket AM3Socket 775
Frequency (MHz)28003000
Bus speed (MHz)2000 (HT/QPI)1333
Clock Multiplier149
L1 cache192 KB (code) / 192 KB (data)64 KB (code) / 64 KB (data)
L2 cache (KB)15366144
L3 cache (KB)6144 
Max temperature (°C)55 - 7372.4
TDP (Watt)95 / 106.565
Max power dissipation (Watt) 100.31
Core voltage (V)1.15 - 1.4250.85 - 1.3625
Cores32
Threads32
Multiprocessing1
 
Instruction set extensions
3DNow!+-
AMD64 / EM64T 64-bit technology+
MMX+
SSE+
SSE2+
SSE3+
SSE4.1-+
SSSE3 / Supplemental SSE3-+
 
Supported technologies
PowerNow! / Enhanced SpeedStep+
Trusted Execution-+
Unlocked multiplier+-
Virtualization+
Virus Protection / Execute Disable bit+
 
Integrated Graphics
GPU TypeNone
 
Integrated Memory Controller(s)
The number of controllers10
Notes:

Rows with different specifications or features are highlighted.

For detailed specifications of "AMD Phenom II X3 720 (BE)" or "Intel Core 2 Duo E8400" parts please click on the links in the table header.

Benchmarks

System setup

AMD Phenom II X3 720 (BE) and Intel Core 2 Duo E8400 processors were tested using different system components, that are identified by MB, RAM and VID columns in the tables below. The numbers in each of these columns correspond to one of motherboards (MB), memory configurations (RAM) or graphics adapters (VID), listed below:

MB - Motherboard(s):
1. ASROCK 4CORE1600TWINS-P35
2. MSI K9A2 PLATINUM
3. ASROCK M3A780GXH/128M

RAM - Memory:
1. 2 GB DUAL-CHANNEL CORSAIR CM3X1024-1333C9 DDR3
2. 2GB DUAL-CHANNEL CORSAIR CM2X1024-6400C4

VID - Video card(s):
1. POWERCOLOR 24PRO256M DDR2 (ATI RADEON HD2400)

All tests were performed at default frequency and voltage, using manufacturer's stock fan/heatsink. None of the components were overclocked. Motherboard BIOS options were left at default settings.

The results of all benchmarks are broken into four categories: multi-threaded, single-threaded, memory intensive and graphics / gaming.


Phenom II X3 720 (BE) vs Intel Core 2 Duo E8400 single-threaded benchmarks

Single-threaded benchmarks run on a single CPU core, and do not depend on such features as the number of cores, or Hyper-Threading technology. Additionally, they do not utilize on-chip caches, dedicated to other cores.

     

    AMD Phenom II X3 720 (BE)           Intel Core 2 Duo E8400

CINEBENCH R10 CPU score (1 core) benchmark

Measures performance of a single-core rendering of a photo-realistic 3D image using CINEMA 4D software engine.
Longer is better <MBRAMVID
100%111
78.0%221
77.7%311

Super PI (1M) benchmark

Measures time, required to calculate the first 1 million digits after the decimal point in the number Pi.
Longer is better <MBRAMVID
100%111
63.5%221
63.4%311


Phenom II X3 720 (BE) vs Intel Core 2 Duo E8400 multi-threaded benchmarks

Multi-threaded benchmarks utilize all CPU cores and other on-chip resources (on-chip caches, internal buffers, etc). Intel's Hyper-Threading feature also helps to improve multi-threading performance.

     

    AMD Phenom II X3 720 (BE)           Intel Core 2 Duo E8400

CINEBENCH R10 CPU score benchmark

Measures performance of multi-core rendering of a photo-realistic 3D image using CINEMA 4D software engine.
Longer is better <MBRAMVID
100%311
99.8%221
90.1%111

CINEBENCH R10 render time (seconds) benchmark

Measures time taken to render a photo-realistic 3D image using CINEMA 4D software engine.
Longer is better <MBRAMVID
100%311
99.8%221
90.1%111

Euler3D benchmark

Longer is better <MBRAMVID
100%311
95.5%221
94.4%111

Sandra Dhrystone (MIPS) benchmark

Runs Dhrystone test on all cores, and reports estimated integer performance in MIPS (Millions of Instructions Per Second).
Longer is better <MBRAMVID
100%221
99.8%311
85.5%111

Sandra MultiMedia Floating Point (it/s) benchmark

Longer is better <MBRAMVID
100%221
85.4%111

    AMD Phenom II X3 720 (BE)           Intel Core 2 Duo E8400

Sandra MultiMedia Integer (it/s) benchmark

Longer is better <MBRAMVID
100%221
70.6%111

Sandra Whetstone (MFLOPS) benchmark

Runs Whetstone test on all cores, and reports estimated floating-point performance in MFLOPS (Millions of Floating-Point Operations Per Second).
Longer is better <MBRAMVID
100%221
99.9%311
72.6%111

Sandra Whetstone SSE2 (MFLOPS) benchmark

Runs SSE2-enabled Whetstone test on all cores, and reports estimated floating-point performance in MFLOPS (Millions of Floating-Point Operations Per Second).
Longer is better <MBRAMVID
100%221
99.8%311
86.1%111

wPrime v1.55 (32M) benchmark

wPrime benchmark measures time taken to calculate square roots of numbers from 1 to 33554431.
Longer is better <MBRAMVID
100%311
99.9%221
65.3%111


Phenom II X3 720 (BE) vs Intel Core 2 Duo E8400 graphics benchmarks

Graphics benchmarks depend on the type of integrated or discrete graphics adapter, and to less extent on the processor performance. Because these benchmarks are synthetic, they may not truly represent gaming performance. However, they still can be used to estimate whether one processor will perform faster or slower than another CPU in games and other 3D tasks.

     

    AMD Phenom II X3 720 (BE)           Intel Core 2 Duo E8400

3DMark2001 score benchmark

Runs a series of game simulations and feature tests to measure graphics and 3D game performance of discrete and integrated GPUs. It utilizes a single CPU core, and it is compatible with DirectX 8 and later APIs.
Longer is better <MBRAMVID
100%111
99.5%221
99.4%311

CINEBENCH R10 OpenGL score benchmark

Longer is better <MBRAMVID
100%111
99.5%311
98.9%221


Phenom II X3 720 (BE) vs Intel Core 2 Duo E8400 memory performance

Memory-intensive tests or programs move large amounts of data to/from memory, and they depend more on memory throughput and the size of on-chip caches, rather than on CPU integer/FP/SIMD performance.

     

    AMD Phenom II X3 720 (BE)           Intel Core 2 Duo E8400

7Zip compressing/decompressing speed (1 thread) benchmark

Longer is better <MBRAMVID
100%111
96.3%311
95.2%221

WinRAR compressing/decompressing speed benchmark

Longer is better <MBRAMVID
100%311
96.6%221
73.3%111

CPUIDs

The table below compares two random CPUID records for AMD Phenom II X3 720 (BE) and Intel Core 2 Duo E8400 microprocessors, that were submitted to our CPUID database. Please note that different steppings of Intel processors, identified by S-spec numbers or CPUID, may have slightly different features. For that reason the comparison table below only applies to CPUs with specific S-Spec number / CPUID.

  CPUID 1 CPUID 2
ManufacturerAMDIntel
CPU FamilyPhenom II X3Core 2 Duo
Model / Processor Number720E8400
Frequency1954 MHz 
CWID version0.30.2
Part numberHDZ720WFK3DGIEU80570PJ0806M
S-Spec / Stepping CodeCACZC ACSLAPL
 
General information
VendorAuthenticAMDGenuineIntel
Processor name (BIOS)AMD Processor model unknownIntel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz
Processor name (CWID)AMD Phenom(tm) II X3 720 Processor 
Cores32
Logical processors32
Processor typeOriginal OEM Processor
Core steppingRB-C2 
CPUID signature100F4210676
Family16 (010h) 6 (06h)
Model 4 (04h)23 (017h)
Stepping 2 (02h) 6 (06h)
TLB/Cache details 64-byte Prefetching
Data TLB: 4-KB Pages, 4-way set associative, 256 entries
Data TLB: 4-MB Pages, 4-way set associative, 32 entries
Instruction TLB: 2-MB pages, 4-way, 8 entries or 4M pages, 4-way, 4 entries
Instruction TLB: 4-KB Pages, 4-way set associative, 128 entries
L1 Data TLB: 4-KB pages, 4-way set associative, 16 entries
L1 Data TLB: 4-MB pages, 4-way set associative, 16 entries
 
Cache
L1 data: Associativity2-way set associative8-way set associative
L1 data: Line size64 bytes
L1 data: Lines per tag1 
L1 data: Size3 x 64 KB32 KB
L1 instruction: Associativity2-way set associative8-way set associative
L1 instruction: Line size64 bytes
L1 instruction: Lines per tag1 
L1 instruction: Size3 x 64 KB32 KB
L2: Associativity16-way set associative
L2: Line size64 bytes
L2: Lines per tag1 
L2: Size3 x 512 KB6 MB
L3: Associativity48-way set associative 
L3: Line size64 bytes 
L3: Lines per tag1 
L3: Size6 MB 
 
Instruction set extensions
3DNow!+-
AMD extensions to MMX+-
Extensions to 3DNow!+-
MMX+
SSE+
SSE2+
SSE3+
SSE4.1-+
SSE4A+-
SSSE3-+
 
Additional instructions
Advanced Bit manipulation+-
CLFLUSH+
CMOV+
CMPXCHG16B+
CMPXCHG8B+
FXSAVE/FXRSTORE+
MONITOR/MWAIT+
POPCNT+-
PREFETCH/PREFETCHW+-
RDTSCP+-
SKINIT/STGI support+-
SYSCALL/SYSRET+-
SYSENTER/SYSEXIT+
 
Major features
64-bit / Intel 64+
Enhanced SpeedStep-+
Intel Trusted Execution technology-+
Intel Virtualization-+
NX bit/XD-bit+
On-chip Floating Point Unit+
PowerNow! / Cool'n'Quiet+-
Secure Virtual Machine (Virtualization)+-
 
Other features
1 GB large page support+-
100MHz multiplier control+-
128-bit SSE instructions+-
36-bit page-size extensions+
64-bit debug store-+
Advanced programmable interrupt controller+
CPL qualified debug store-+
Core multi-processing legacy mode+-
Debug store-+
Debugging extensions+
Digital Thermal Sensor capability-+
Extended APIC space+-
FXSAVE/FXRSTOR optimizations+-
Hardware P-state control+-
Hardware thermal control+-
Instruction based sampling+-
LAHF/SAHF support in 64-bit mode+
LBR virtualization+-
LOCK MOV CR0 means MOV CR8+-
Machine check architecture+
Machine check exception+
Memory-type range registers+
Misaligned SSE mode+-
Model-specific registers+
Nested page tables+-
OS visible workaround+-
Page attribute table+
Page global extension+
Page-size extensions (4MB pages)+
Pending break enable-+
Perfmon and Debug capability-+
Physical address extensions+
SVM lock+-
Self-snoop-+
Software thermal control+-
Support for NRIP save+-
THERMTRIP+-
TSC rate is ensured to be invariant across all states+-
Temperature sensor+-
Thermal monitor-+
Thermal monitor 2-+
Thermal monitor and software controlled clock facilities-+
Time stamp counter+
Virtual 8086-mode enhancements+
Watchdog timer support+-
xTPR Update Control-+
+ - feature is supported
- - feature is not supported
Features, not supported by all processors in the table, are not displayed

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