Intel Xeon E5649 vs Intel Xeon X5660

Comparative analysis of Intel Xeon E5649 and Intel Xeon X5660 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Xeon E5649

Intel Xeon X5660

Differences

Reasons to consider the Intel Xeon E5649

CPU is newer: launch date 11 month(s) later
Around 19% lower typical power consumption: 80 Watt vs 95 Watt

Launch date	February 2011 vs March 2010
Thermal Design Power (TDP)	80 Watt vs 95 Watt

Reasons to consider the Intel Xeon X5660

Around 9% higher clock speed: 3.20 GHz vs 2.93 GHz
Around 7% higher maximum core temperature: 81.3°C vs 76.2°C
Around 12% better performance in PassMark - Single thread mark: 1355 vs 1214
Around 10% better performance in PassMark - CPU mark: 10473 vs 9558
Around 15% better performance in Geekbench 4 - Single Core: 542 vs 470
Around 13% better performance in Geekbench 4 - Multi-Core: 3231 vs 2849
Around 5% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 2.733 vs 2.594
2.2x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 55.088 vs 25.435
Around 12% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.722 vs 0.647

Specifications (specs)
Maximum frequency	3.20 GHz vs 2.93 GHz
Maximum core temperature	81.3°C vs 76.2°C
Benchmarks
PassMark - Single thread mark	1355 vs 1214
PassMark - CPU mark	10473 vs 9558
Geekbench 4 - Single Core	542 vs 470
Geekbench 4 - Multi-Core	3231 vs 2849
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.733 vs 2.594
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	55.088 vs 25.435
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.722 vs 0.647

Compare benchmarks

CPU 1: Intel Xeon E5649
CPU 2: Intel Xeon X5660

PassMark - Single thread mark

CPU 1

CPU 2

1214

1355

PassMark - CPU mark

CPU 1

CPU 2

9558

10473

Geekbench 4 - Single Core

CPU 1

CPU 2

470

542

Geekbench 4 - Multi-Core

CPU 1

CPU 2

2849

3231

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

2.594

2.733

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

25.435

55.088

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.647

0.722

Name	Intel Xeon E5649	Intel Xeon X5660
PassMark - Single thread mark	1214	1355
PassMark - CPU mark	9558	10473
Geekbench 4 - Single Core	470	542
Geekbench 4 - Multi-Core	2849	3231
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.594	2.733
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	25.435	55.088
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.647	0.722
CompuBench 1.5 Desktop - Video Composition (Frames/s)		1.363
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		12.8

Compare specifications (specs)

	Intel Xeon E5649	Intel Xeon X5660
Essentials
Architecture codename	Westmere EP	Westmere EP
Launch date	February 2011	March 2010
Launch price (MSRP)	$45	$33
Place in performance rating	2407	2392
Price now	$115	$112.91
Processor Number	E5649	X5660
Series	Legacy Intel® Xeon® Processors	Legacy Intel® Xeon® Processors
Status	Launched	Discontinued
Value for money (0-100)	17.77	19.89
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	2.53 GHz	2.80 GHz
Bus Speed	5.86 GT/s QPI	6.4 GT/s QPI
Die size	239 mm	239 mm
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	12288 KB (shared)	12288 KB (shared)
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	76.2°C	81.3°C
Maximum frequency	2.93 GHz	3.20 GHz
Number of cores	6	6
Number of QPI Links	2	2
Number of threads	12	12
Transistor count	1170 million	1170 million
VID voltage range	0.750V-1.350V	0.750V-1.350V
Memory
ECC memory support
Max memory channels	3	3
Maximum memory bandwidth	32 GB/s	32 GB/s
Maximum memory size	288 GB	288 GB
Supported memory types	DDR3 800/1066/1333	DDR3 800/1066/1333
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	2	2
Package Size	42.5mm X 45mm	42.5mmX45mm
Sockets supported	FCLGA1366	FCLGA1366
Thermal Design Power (TDP)	80 Watt	95 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® SSE4.2	Intel® SSE4.2
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)	40-bit	40-bit
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)