Xeon D-1521 vs E3-1265L v2

VS

Aggregate performance score

Xeon E3-1265L v2
2012
4 cores / 8 threads, 45 Watt
3.24
Xeon D-1521
2015
4 cores / 8 threads, 45 Watt
3.58
+10.5%

Xeon D-1521 outperforms Xeon E3-1265L v2 by a moderate 10% based on our aggregate benchmark results.

Primary details

Comparing Xeon E3-1265L v2 and Xeon D-1521 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking16031519
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.962.60
Market segmentServerServer
Seriesno dataIntel Xeon D
Power efficiency6.817.53
Architecture codenameIvy Bridge (2012−2013)Broadwell (2015−2019)
Release date14 May 2012 (12 years ago)1 November 2015 (9 years ago)
Launch price (MSRP)$142$199

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1265L v2 has 14% better value for money than Xeon D-1521.

Detailed specifications

Xeon E3-1265L v2 and Xeon D-1521 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 speed2.5 GHz2.4 GHz
Boost clock speed3.5 GHz2.7 GHz
Bus typeno dataDMI 2.0
Bus rate5 GT/sno data
Multiplierno data24
L1 cache64 KB (per core)256 KB
L2 cache256 KB (per core)1 MB
L3 cache8 MB (shared)6 MB
Chip lithography22 nm14 nm
Die size160 mm2246.24 mm2
Maximum case temperature (TCase)no data80 °C
Number of transistors1,400 million3200 Million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Xeon E3-1265L v2 and Xeon D-1521 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 configuration11 (Uniprocessor)
SocketFCLGA1155FCBGA1667
Power consumption (TDP)45 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1265L v2 and Xeon D-1521. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVXIntel® AVX2
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX-+
Idle States++
Thermal Monitoring-+
GPIOno data+
FDI+no data

Security technologies

Xeon E3-1265L v2 and Xeon D-1521 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Keyno data+
Identity Protection+-
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1265L v2 and Xeon D-1521 are enumerated here.

VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1265L v2 and Xeon D-1521. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4, DDR3
Maximum memory size32.77 GB128 GB
Max memory channels22
Maximum memory bandwidthno data34.124 GB/s
ECC memory support++

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel HD Graphics 2500no data
Quick Sync Video+-
Clear Video+no data
Clear Video HD+no data
Graphics max frequency1.15 GHzno data
InTru 3D+no data

Graphics interfaces

Available interfaces and connections of Xeon E3-1265L v2 and Xeon D-1521 integrated GPUs.

Number of displays supported3no data

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1265L v2 and Xeon D-1521.

PCIe version3.02.0/3.0
PCI Express lanesno data24
USB revisionno data2.0/3.0
Total number of SATA portsno data6
Number of USB portsno data8
Integrated LANno data+
UARTno 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 E3-1265L v2 3.24
Xeon D-1521 3.58
+10.5%

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 E3-1265L v2 5148
Xeon D-1521 5690
+10.5%

Gaming performance

Pros & cons summary


Performance score 3.24 3.58
Recency 14 May 2012 1 November 2015
Chip lithography 22 nm 14 nm

Xeon D-1521 has a 10.5% higher aggregate performance score, an age advantage of 3 years, and a 57.1% more advanced lithography process.

The Xeon D-1521 is our recommended choice as it beats the Xeon E3-1265L v2 in performance tests.


Should you still have questions on choice between Xeon E3-1265L v2 and Xeon D-1521, ask them in Comments section, and we shall answer.

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Intel Xeon E3-1265L v2
Xeon E3-1265L v2
Intel Xeon D-1521
Xeon D-1521

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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

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