Xeon E5620 vs i7-975

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Aggregate performance score

Core i7-975
2009
4 cores / 8 threads, 130 Watt
2.20
Xeon E5620
2010
4 cores / 8 threads, 80 Watt
2.26
+2.7%

Xeon E5620 outperforms Core i7-975 by a minimal 3% based on our aggregate benchmark results.

Primary details

Comparing Core i7-975 and Xeon E5620 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking18481827
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.130.08
Market segmentDesktop processorServer
SeriesCore i7 (Desktop)no data
Power efficiency1.602.67
Architecture codenameBloomfield (2008−2010)Westmere-EP (2010−2011)
Release date2 June 2009 (15 years ago)16 March 2010 (14 years ago)
Launch price (MSRP)$476$35

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-975 has 63% better value for money than Xeon E5620.

Detailed specifications

Core i7-975 and Xeon E5620 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 cores4 (Quad-Core)4 (Quad-Core)
Threads88
Base clock speed3.33 GHz2.4 GHz
Boost clock speed3.6 GHz2.66 GHz
Bus rate1333 MHzno data
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache8 MB (shared)12 MB (shared)
Chip lithography45 nm32 nm
Die size263 mm2239 mm2
Maximum core temperatureno data78 °C
Maximum case temperature (TCase)68 °Cno data
Number of transistors731 million1,170 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i7-975 and Xeon E5620 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 configuration12
SocketFCLGA1366FCLGA1366,LGA1366
Power consumption (TDP)130 Watt80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-975 and Xeon E5620. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2Intel® SSE4.2
AES-NI-+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology1.01.0
Hyper-Threading Technology++
Idle States++
Demand Based Switching-+
PAE36 Bit40 Bit

Security technologies

Core i7-975 and Xeon E5620 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-975 and Xeon E5620 are enumerated here.

VT-dno data+
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-975 and Xeon E5620. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory size24 GB288 GB
Max memory channels33
Maximum memory bandwidth25.6 GB/s25.6 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 Core i7-975 and Xeon E5620.

PCIe version2.02.0

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.

i7-975 2.20
Xeon E5620 2.26
+2.7%

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.

i7-975 3493
Xeon E5620 3592
+2.8%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-975 539
+46.9%
Xeon E5620 367

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-975 1884
+28.3%
Xeon E5620 1468

Gaming performance

Pros & cons summary


Performance score 2.20 2.26
Recency 2 June 2009 16 March 2010
Chip lithography 45 nm 32 nm
Power consumption (TDP) 130 Watt 80 Watt

Xeon E5620 has a 2.7% higher aggregate performance score, an age advantage of 9 months, a 40.6% more advanced lithography process, and 62.5% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Core i7-975 and Xeon E5620.

Note that Core i7-975 is a desktop processor while Xeon E5620 is a server/workstation one.


Should you still have questions on choice between Core i7-975 and Xeon E5620, ask them in Comments section, and we shall answer.

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Intel Core i7-975
Core i7-975
Intel Xeon E5620
Xeon E5620

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Community ratings

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


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Questions & comments

Here you can ask a question about Core i7-975 or Xeon E5620, agree or disagree with our judgements, or report an error or mismatch.