SK Hynix
Hynix 4GB PC4-19200 DDR4 2400MHz 288-Pin Dimm Desktop Memory Module Mfr P/N HMA851U6AFR6N-UH
Limited Entry-Level Capacity
Validated by C.R. Vinoth Kumar ยท Founder & Senior Editor
8GB of total memory is extremely marginal in 2026. Windows 11 uses 3-4GB at idle, leaving very little headroom for multitasking or gaming. We highly recommend upgrading to at least 16GB, or 32GB to prevent page-file stutters.
Current price
$66.00$16.50/GBAs of May 30, 2026 ยท Verify on Amazon ยท Price subject to change
$/GB vs DDR4 market avg
61% above avgAt $16.50/GB โ DDR4 market rate.
Consider waiting
Price is near its tracked high of $66.00 โ in the top 25% of its recorded range. Prices may fall.
Verify Alternative Stores
Our systems refresh prices daily from Amazon.com to secure the absolute lowest USD market rate. You can cross-reference this RAM kit (ASIN: B073HR7684) against alternative marketplaces like Newegg or Crucial before buying.
Product prices and availability are accurate as of the date of the last daily update and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. As an Amazon Associate we earn from qualifying purchases.
At a Glance
Strengths
- Compatible with 4 CPU platforms
Limitations
- 61% above the overall DDR4 market average $/GB
- Price near its tracked high of $66.00
- Availability unconfirmed โ may be out of stock or delisted
All points are derived from price data, customer ratings, and product specifications โ not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 4GB DDR4 DIMM specifications.
4GB is below the 16GB minimum recommended for gaming in 2026
4GB is below the recommended minimum for comfortable everyday use
4GB is insufficient for video editing or 3D rendering workloads
Non-ECC RAM is not recommended for servers or NAS โ silent data corruption risk without error correction
This is a desktop DIMM โ laptop upgrades require SO-DIMM modules. See Laptop RAM Prices for compatible options.
Verdicts based on capacity, form factor, and ECC specifications โ not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily โ track price trends over time
Current
$66.00
38d Low
$14.59
38d High
$66.00
38d Avg
$41.96
Price Range
Tracked low
$14.59Current
$66.00Tracked high
$66.00Near tracked high
Speed Ranking
Top 74%
2400MHz ranks in the top 74% of all DDR4 speeds tracked (1,546 modules).
Z-Score Deviation
Severely Overpriced
Deviation: 2.94ฯ
Avoid if possible. Price is currently spiked more than 2 standard deviations above average.
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) ยท guide | DDR4 |
CapacityTotal kit memory size ยท guide | 4GB |
SpeedFrequency in MT/s or MHz ยท guide | 2400MHz |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | DIMM |
ASIN | B073HR7684 |
Spotted a wrong price or spec? Report a data correction ยท How we verify data
Compatible Platforms
Always verify with your motherboard's QVL before purchasing.
Platform Pairing Guide
How well 2400MHz performs on each platform โ based on memory controller characteristics and manufacturer guidance.
| Platform | Benefit |
|---|---|
| AMD AM4 (Ryzen 1000โ5000) | โ Good |
| Intel LGA1200 (10th/11th gen) | โ Optimal |
| Intel LGA1700 DDR4 (12thโ14th gen) | โ Good |
Platform guidance based on AMD and Intel official specifications and independent testing. Always verify compatibility with your specific motherboard's QVL.
Motherboard Compatibility
Most popular DDR4 boards per platform
ASUS TUF Gaming B550-Plus WiFi II / MSI MAG B550 Tomahawk
B550 is the top AM4 chipset. DDR4-3600 CL16 is the sweet spot.
Gigabyte B760M D2H DDR4 / ASUS Prime B760M-A D4
B760 DDR4 boards support 12thโ14th Gen Intel with DDR4.
ASUS Prime B560M-A / MSI MAG B560 Tomahawk WiFi
DDR4-3200 is the official LGA1200 maximum โ ideal match.
Always verify with your board's QVL before purchasing.
Cheaper Alternatives
Same 4GB DDR4 โ lower $/GB than this product
Silicon Power
Silicon Power DDR4-2400 (PC4-19200) 4GB 288Pin 1.2V CL17 SP004GBLFU240N02 Desktop PC Memory Green40% cheaper/GB
Silicon Power
A-Tech 4GB DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM Non-ECC Desktop RAM Memory Module36% cheaper/GB
Ranked by lowest $/GB. Same 4GB DDR4 DIMM only. Prices updated daily.
DDR4 Price by Capacity
Average $/GB across all DDR4 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 4GBThis product | $10.56/GB |
| 8GB | $9.68/GB |
| 16GB | $9.70/GB |
| 32GB | $9.02/GB |
| 64GB | $8.97/GB |
| 128GB | $6.58/GB |
Upgrade Cost Calculator
How much more (or less) would you spend to step up or down in capacity? Prices shown are the cheapest available DDR4 DIMM in each tier today.
Current
4GB
$66.00$16.50/GBPrices are the lowest available in each tier from our daily database โ verify on Amazon before purchasing. Only DDR4 DIMM modules compared.
Also available from SK Hynix
Same brand, different configurations
SK Hynix
Hynix 8GB PC4-19200 DDR4 2400MHz 288-Pin Dimm Memory Module Mfr P/N HMA81GU6AFR8N-UH
SK Hynix
Hynix HMA81GS6DJR8N-XN 8gb Ddr4-3200 Unbuffered Mem Disc Prod Spcl Sourcing See Notes
SK Hynix
Hynix 8GB PC4-21300 DDR4-2666MHz 288-Pin DIMM 1.2V Memory RAM Module HMA81GU6CJR8N-VK
Related pages
Frequently Asked Questions
Is the SK Hynix 4GB 2400MHz DDR4 compatible with my motherboard?
This module is compatible with Intel 11th Gen Core (LGA1200), Intel 12th / 13th / 14th Gen (LGA1700), Intel Core X / Skylake-X (LGA2066 / X299), AMD Ryzen 1000โ5000 (AM4). Always verify with your motherboard's QVL (Qualified Vendor List) before purchasing, as compatibility can vary by board revision.
Is this DDR4 module a good deal right now?
At $66.00 ($16.50/GB), this module is priced near the DDR4 market average. Check the price history chart above to see if prices have been trending up or down recently.
What is 2400MHz RAM used for?
DDR4 RAM is used in Intel LGA1200/LGA1700 and AMD AM4 (Ryzen 1000-5000) systems. It offers excellent value for existing platforms. 2400MHz is a standard DDR4 speed tier.
How does SK Hynix RAM compare to other brands?
SK Hynix has 178 modules tracked with an average customer rating of 4.5โ . Browse all SK Hynix modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Is 16GB of RAM enough for gaming in 2026?
4GB is below the 16GB minimum recommended for gaming in 2026. Most modern AAA titles require 12โ16GB. Consider upgrading to at least 16GB for a smooth gaming experience.
What is the difference between a single 4GB stick and a 2ร2GB kit?
A single 4GB stick runs in single-channel mode, using only one memory channel. A 2ร2GB kit of the same total capacity runs in dual-channel mode, doubling memory bandwidth and improving real-world performance by 10โ30%. For best performance, always buy RAM in matched pairs.
Similar DDR4 RAM
Silicon Power
A-Tech 4GB DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM Non-ECC Desktop RAM Memory Module
A-Tech
A-Tech 4GB DDR4 2133 MHz UDIMM PC4-17000 (PC4-2133P) CL15 DIMM Non-ECC Desktop RAM Memory Module
Silicon Power
Silicon Power DDR4-2400 (PC4-19200) 4GB 288Pin 1.2V CL17 SP004GBLFU240N02 Desktop PC Memory Green
Expertly Curated by C.R. Vinoth Kumar
Lead Hardware AnalystC.R. Vinoth Kumar is a senior systems systems engineer and memory hardware architect with over 12 years of experience benchmarking computer components, building performance virtualization servers, and assembling local LLM inference rigs. Every memory module tracked in our database is mathematically checked using custom telemetry to isolate nanosecond CAS latency bounds, price-per-gigabyte market averages, and Ryzen/Intel platform pairings.
As an Amazon Associate we earn from qualifying purchases. Prices are updated daily and may change on Amazon.