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Kingston KHX2666C15/16GX

HyperX 2666 C15 4x16GB

▲ 501 ▼

Release date ≤ Q1 2016.

Average Bench: 99.2% (7th of 115)

Based on 256 user benchmarks.  Model: Kingston KHX2666C15/16GX 4x16GB
Poor: 70%Average: 99.2% Great: 132%

Popular builds with this RAM

Excellent average bench

The Kingston HyperX 2666 C15 4x16GB averaged just 0.8% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Kingston HyperX 2666 C15 4x16GB near the top of the comparison list.

Strengths

Avg. 16 Core Write Bench 45.4GB/s
Avg. 16 Core Read Bench 35.5GB/s

Poor consistency

The range of scores (95th - 5th percentile) for the Kingston HyperX 2666 C15 4x16GB is 62.3%. This is a particularly wide range which indicates that the Kingston HyperX 2666 C15 4x16GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 1 Core Read Bench 13.6GB/s
Avg. 1 Core Mixed IO Bench 18.9GB/s
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Average Bench

(Based on 256 samples)
Rank 799.2%
Min Avg Max
24.6 MC Read 35.5 52.6
24.5 MC Write 45.4 58.7
22.4 MC Mixed 33.7 49.1
109% 38.2 GB/s
Min Avg Max
7.2 SC Read 13.6 21
17.5 SC Write 24.3 36.7
9.68 SC Mixed 18.9 28.7
54.1% 18.9 GB/s
Min Avg Max
56.6 Latency 74.1 99.9
54% 74.1 ns
User Benchmarks BenchMulti coreSingle coreLatency
The fastest RAM (mainstream) averages a speed of 100%
4 of 8 slots used
64GB DIMM DDR4 2666 MHz clocked @ 2667 MHz
130% Outstanding
MC Read 47.7
MC Write 59.5
MC Mixed 48.3
148% 51.8 GB/s
SC Read 15.2
SC Write 18.4
SC Mixed 21.8
53% 18.5 GB/s
Latency 69.8
57% 69.8 ns
4 of 8 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
110% Outstanding
MC Read 38.9
MC Write 50.3
MC Mixed 39.8
123% 43 GB/s
SC Read 13.7
SC Write 21.5
SC Mixed 20.3
53% 18.5 GB/s
Latency 75.8
53% 75.8 ns
4 of 8 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
106% Outstanding
MC Read 37.6
MC Write 49.2
MC Mixed 38.6
119% 41.8 GB/s
SC Read 13
SC Write 18.4
SC Mixed 18.7
48% 16.7 GB/s
Latency 76.9
52% 76.9 ns
4 of 4 slots used
64GB DIMM DDR4 clocked @ 2667 MHz
88.6% Excellent
MC Read 31.4
MC Write 34.5
MC Mixed 28.4
90% 31.4 GB/s
SC Read 20.1
SC Write 36.1
SC Mixed 26
78% 27.4 GB/s
Latency 63.4
63% 63.4 ns
4 of 4 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
73.3% Very good
MC Read 27.7
MC Write 26.2
MC Mixed 23.4
74% 25.8 GB/s
SC Read 22.7
SC Write 27.5
SC Mixed 24.8
72% 25 GB/s
Latency 89.9
44% 89.9 ns
4 of 8 slots used
64GB DIMM clocked @ 2133 MHz
65.9% Good
MC Read 27.3
MC Write 22.1
MC Mixed 21.4
67% 23.6 GB/s
SC Read 13.9
SC Write 18.7
SC Mixed 20.1
50% 17.6 GB/s
Latency 69.4
58% 69.4 ns
256 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 65,507,567 RAM Kits tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical HyperX 2666 C15 4x16GB Builds (Compare 244 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 88%
Aircraft carrier
Desktop
Desktop 87%
Aircraft carrier
Workstation
Workstation 84%
Aircraft carrier

Motherboard: Asus X99-E WS - $473

CPU
Core i7-5960XIntel  $209Bench 80%, 15,468 samples38x
Core i7-5930KIntel  $115Bench 80%, 34,039 samples31x
Core i7-5820KIntel  $130Bench 77%, 101,694 samples27x
GPU
GTX 1080Nvidia  $400Bench 102%, 1,082,454 samples15x
RTX 2080-TiNvidia  $441Bench 156%, 357,946 samples15x
GTX 970Nvidia  $340Bench 49%, 834,238 samples14x
SSD
SM961 NVMe PCIe M.2 512GBSamsungBench 238%, 21,542 samples18x
MZ7TE128HMGR-000L1 128GBSamsungBench 62%, 5,980 samples17x
960 Pro NVMe PCIe M.2 512GBSamsung  $135Bench 266%, 63,520 samples8x
RAM
HyperX 2666 C15 4x16GBKingstonBench 99%, 256 samples1x
EDIT WITH CUSTOM PC BUILDER Value: 70% - Good Total price: $1,082

Popular HyperX 2666 C15 4x16GB compatible motherboards:

How Fast Is Your RAM? (Bench your build) Size up your PC in less than a minute

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
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Memory Kit Rankings (Price vs Performance) December 2023 RAM Rankings

We calculate effective RAM speed which measures performance for typical desktop users. Effective speed is adjusted by current cost per GB to yield value for money. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top Memory Kits. [RAMPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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Speed Comparisons

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vs Corsair Vengeance LPX DDR4 2666 C16 2x8GB
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115 Memory Kits (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different RAM Kits perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

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 Best User Rated
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Intel Core i5-12400F $146Nvidia RTX 4060-Ti $360Samsung 850 Evo 120GB $80
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WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $357SanDisk Ultra Fit 32GB $16
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