Xeon D-1521 vs i7-3770K

Aggregate performance score

Core i7-3770K
2012
4 cores / 8 threads, 77 Watt
4.08
+14%
Xeon D-1521
2015
4 cores / 8 threads, 45 Watt
3.58

Core i7-3770K outperforms Xeon D-1521 by a moderate 14% based on our aggregate benchmark results.

Primary details

Comparing Core i7-3770K and Xeon D-1521 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking14111519
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.712.60
Market segmentDesktop processorServer
SeriesIntel Core i7 (Desktop)Intel Xeon D
Power efficiency5.017.53
Architecture codenameIvy Bridge (2012−2013)Broadwell (2015−2019)
Release date29 April 2012 (12 years ago)1 November 2015 (9 years ago)
Launch price (MSRP)$294$199

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon D-1521 has 266% better value for money than i7-3770K.

Detailed specifications

Core i7-3770K 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 speed3.5 GHz2.4 GHz
Boost clock speed3.9 GHz2.7 GHz
Bus typeDMIDMI 2.0
Bus rate5 GT/sno data
Multiplier3524
L1 cache64 KB (per core)64K (per core)
L2 cache256K (per core)256K (per core)
L3 cache8 MB (shared)1.5 MB (per core)
Chip lithography22 nm14 nm
Die size160 mm2246.24 mm2
Maximum core temperature67 °Cno data
Maximum case temperature (TCase)67 °C80 °C
Number of transistors1,400 million3,200 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i7-3770K 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)77 Watt45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3770K 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

Core i7-3770K and Xeon D-1521 technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Key++
Identity Protection+-
OS Guardno data+
Anti-Theft+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3770K and Xeon D-1521 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3770K and Xeon D-1521. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4, DDR3
Maximum memory size32 GB128 GB
Max memory channels22
Maximum memory bandwidth25.6 GB/s34.124 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel HD Graphics 4000no data
Quick Sync Video+-
Clear Video HD+no data
Graphics max frequency1.15 GHzno data
InTru 3D+no data

Graphics interfaces

Available interfaces and connections of Core i7-3770K and Xeon D-1521 integrated GPUs.

Number of displays supported3no data

Peripherals

Specifications and connection of peripherals supported by Core i7-3770K and Xeon D-1521.

PCIe version3.02.0/3.0
PCI Express lanes1624
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.

i7-3770K 4.08
+14%
Xeon D-1521 3.58

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.

i7-3770K 6473
+13.8%
Xeon D-1521 5690

Gaming performance

Pros & cons summary


Performance score 4.08 3.58
Recency 29 April 2012 1 November 2015
Chip lithography 22 nm 14 nm
Power consumption (TDP) 77 Watt 45 Watt

i7-3770K has a 14% higher aggregate performance score.

Xeon D-1521, on the other hand, has an age advantage of 3 years, a 57.1% more advanced lithography process, and 71.1% lower power consumption.

The Core i7-3770K is our recommended choice as it beats the Xeon D-1521 in performance tests.

Note that Core i7-3770K is a desktop processor while Xeon D-1521 is a server/workstation one.


Should you still have questions on choice between Core i7-3770K and Xeon D-1521, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-3770K
Core i7-3770K
Intel Xeon D-1521
Xeon D-1521

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Community ratings

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Questions & comments

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