Xeon E5645 vs E5-2689

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Aggregate performance score

Xeon E5-2689
2012
8 cores / 16 threads, 115 Watt
6.25
+96.5%
Xeon E5645
2010
6 cores / 12 threads, 80 Watt
3.18

Xeon E5-2689 outperforms Xeon E5645 by an impressive 97% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5-2689 and Xeon E5645 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking10821618
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data1.38
Market segmentServerServer
SeriesXeonno data
Power efficiency5.143.76
Architecture codenameSandy Bridge-EP (2012)Westmere-EP (2010−2011)
Release date6 March 2012 (12 years ago)16 March 2010 (14 years ago)
Launch price (MSRP)no data$294

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5-2689 and Xeon E5645 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores8 (Octa-Core)6 (Hexa-Core)
Threads1612
Base clock speed2.6 GHz2.4 GHz
Boost clock speed3.6 GHz2.67 GHz
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache20 MB (shared)12 MB (shared)
Chip lithography32 nm32 nm
Die size435 mm2239 mm2
Maximum core temperatureno data76 °C
Number of transistors2,270 million1,170 million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Xeon E5-2689 and Xeon E5645 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration22
Socket2011FCLGA1366,LGA1366
Power consumption (TDP)115 Watt80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2689 and Xeon E5645. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.2
AES-NI++
AVX+-
Enhanced SpeedStep (EIST)++
Turbo Boost Technologyno data1.0
Hyper-Threading Technologyno data+
Idle Statesno data+
Demand Based Switchingno data+
PAEno data40 Bit

Security technologies

Xeon E5-2689 and Xeon E5645 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2689 and Xeon E5645 are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2689 and Xeon E5645. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory sizeno data288 GB
Max memory channelsno data3
Maximum memory bandwidthno data32 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/Ano data

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2689 and Xeon E5645.

PCIe version3.02.0
PCI Express lanes40no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Xeon E5-2689 6.25
+96.5%
Xeon E5645 3.18

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon E5-2689 9922
+96.6%
Xeon E5645 5048

Gaming performance

Pros & cons summary


Performance score 6.25 3.18
Recency 6 March 2012 16 March 2010
Physical cores 8 6
Threads 16 12
Power consumption (TDP) 115 Watt 80 Watt

Xeon E5-2689 has a 96.5% higher aggregate performance score, an age advantage of 1 year, and 33.3% more physical cores and 33.3% more threads.

Xeon E5645, on the other hand, has 43.8% lower power consumption.

The Xeon E5-2689 is our recommended choice as it beats the Xeon E5645 in performance tests.


Should you still have questions on choice between Xeon E5-2689 and Xeon E5645, ask them in Comments section, and we shall answer.

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Intel Xeon E5-2689
Xeon E5-2689
Intel Xeon E5645
Xeon E5645

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We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.3 3056 votes

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4.1 58 votes

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Questions & comments

Here you can ask a question about Xeon E5-2689 or Xeon E5645, agree or disagree with our judgements, or report an error or mismatch.