Intel Xeon E3-1235 vs Intel Xeon X5660

Comparative analysis of Intel Xeon E3-1235 and Intel Xeon X5660 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Compatibility, Peripherals, 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 E3-1235

Intel Xeon X5660

Differences

Reasons to consider the Intel Xeon E3-1235

CPU is newer: launch date 1 year(s) 1 month(s) later
Around 13% higher clock speed: 3.60 GHz vs 3.20 GHz
Around 18% better performance in PassMark - Single thread mark: 1593 vs 1355
Around 30% better performance in Geekbench 4 - Single Core: 703 vs 542
4.8x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 13.214 vs 2.733
2x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 2.788 vs 1.363

Specifications (specs)
Launch date	April 2011 vs March 2010
Maximum frequency	3.60 GHz vs 3.20 GHz
Benchmarks
PassMark - Single thread mark	1593 vs 1355
Geekbench 4 - Single Core	703 vs 542
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	13.214 vs 2.733
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.788 vs 1.363

Reasons to consider the Intel Xeon X5660

2 more cores, run more applications at once: 6 vs 4
4 more threads: 12 vs 8
Around 12% higher maximum core temperature: 81.3°C vs 72.6°C
Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 50% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 50% more L3 cache; more data can be stored in the L3 cache for quick access later
9x more maximum memory size: 288 GB vs 32 GB
2.1x better performance in PassMark - CPU mark: 10473 vs 5068
Around 26% better performance in Geekbench 4 - Multi-Core: 3231 vs 2563
3.5x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 55.088 vs 15.561
Around 46% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.722 vs 0.493
2.8x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 12.8 vs 4.62

Specifications (specs)
Number of cores	6 vs 4
Number of threads	12 vs 8
Maximum core temperature	81.3°C vs 72.6°C
L1 cache	64 KB (per core) vs 64 KB (per core)
L2 cache	256 KB (per core) vs 256 KB (per core)
L3 cache	12288 KB (shared) vs 8192 KB (shared)
Maximum memory size	288 GB vs 32 GB
Max number of CPUs in a configuration	2 vs 1
Benchmarks
PassMark - CPU mark	10473 vs 5068
Geekbench 4 - Multi-Core	3231 vs 2563
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	55.088 vs 15.561
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.722 vs 0.493
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	12.8 vs 4.62

Compare benchmarks

CPU 1: Intel Xeon E3-1235
CPU 2: Intel Xeon X5660

PassMark - Single thread mark

CPU 1

CPU 2

1593

1355

PassMark - CPU mark

CPU 1

CPU 2

5068

10473

Geekbench 4 - Single Core

CPU 1

CPU 2

703

542

Geekbench 4 - Multi-Core

CPU 1

CPU 2

2563

3231

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

13.214

2.733

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

CPU 1

CPU 2

15.561

55.088

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

CPU 1

CPU 2

0.493

0.722

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

2.788

1.363

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

4.62

12.8

Name	Intel Xeon E3-1235	Intel Xeon X5660
PassMark - Single thread mark	1593	1355
PassMark - CPU mark	5068	10473
Geekbench 4 - Single Core	703	542
Geekbench 4 - Multi-Core	2563	3231
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	13.214	2.733
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	15.561	55.088
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.493	0.722
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.788	1.363
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.62	12.8

Compare specifications (specs)

	Intel Xeon E3-1235	Intel Xeon X5660
Essentials
Architecture codename	Sandy Bridge	Westmere EP
Launch date	April 2011	March 2010
Launch price (MSRP)	$287	$33
Place in performance rating	2364	2392
Price now	$244	$112.91
Processor Number	E3-1235	X5660
Series	Intel® Xeon® Processor E3 Family	Legacy Intel® Xeon® Processors
Status	Discontinued	Discontinued
Value for money (0-100)	9.27	19.89
Vertical segment	Server	Server
Performance
64 bit support
Base frequency	3.20 GHz	2.80 GHz
Bus Speed	5 GT/s DMI	6.4 GT/s QPI
Die size	216 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	8192 KB (shared)	12288 KB (shared)
Manufacturing process technology	32 nm	32 nm
Maximum core temperature	72.6°C	81.3°C
Maximum frequency	3.60 GHz	3.20 GHz
Number of cores	4	6
Number of threads	8	12
Transistor count	1160 million	1170 million
Number of QPI Links		2
VID voltage range		0.750V-1.350V
Memory
ECC memory support
Max memory channels	2	3
Maximum memory bandwidth	21 GB/s	32 GB/s
Maximum memory size	32 GB	288 GB
Supported memory types	DDR3 1066/1333	DDR3 800/1066/1333
Graphics
Graphics base frequency	850 MHz
Graphics max dynamic frequency	1.35 GHz
Graphics max frequency	1.35 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics	Intel HD Graphics P3000
Graphics interfaces
Number of displays supported	2
Wireless Display (WiDi) support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	2
Package Size	37.5mm x 37.5mm	42.5mmX45mm
Sockets supported	LGA1155	FCLGA1366
Thermal Design Power (TDP)	95 Watt	95 Watt
Peripherals
Max number of PCIe lanes	20
PCI Express revision	2.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX	Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Physical Address Extensions (PAE)		40-bit
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)