OWC
OWC 4GB DDR3 1333 PC3-10600 CL9 2Rx8 204-pin 1.5V Non-ECC SODIMM Memory RAM Module Upgrade Compatible with Lenovo ThinkPad T420 T420i T420s T420si T510 T520 T520i
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
$24.99$6.25/GBAs of Jul 14, 2026 ยท Verify on Amazon ยท Price subject to change
$/GB vs DDR3 market avg
50% below avgDeal score
92/100
At $6.25/GB โ 50% below the DDR3 market average.
Good time to buy
Price is near its tracked low of $24.99 โ in the bottom 20% of its recorded range.
Also sold elsewhere
Prices on this page are Amazon.com prices from our Creators API refresh (as of the last update). You can look up this kit (ASIN: B0CHGNH7J4) on other retailers such as Newegg or Crucial โ we do not display their prices here. Always verify the checkout price on Amazon before purchasing.
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 I earn from qualifying purchases.
At a Glance
Strengths
- 50% below the overall DDR3 market average $/GB
- Price near its tracked low of $24.99
Limitations
- Limited review data โ only 2 Amazon reviews
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 DDR3 SO-DIMM specifications.
Laptop RAM โ suitable for gaming laptops with compatible slots
4GB is below the recommended minimum for comfortable everyday use
4GB is insufficient for video editing or 3D rendering workloads
SO-DIMM laptop RAM is not used in servers โ servers require DIMM or RDIMM modules
SO-DIMM form factor โ correct type for laptop memory upgrades. Verify your laptop has an accessible slot.
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
$24.99
57d Low
$24.99
57d High
$25.99
57d Avg
$25.94
Price Range
Tracked low
$24.99Current
$24.99Tracked high
$25.99โ Near tracked low
Z-Score Deviation
Exceptional Bargain (Highly Underpriced)
Deviation: -4.24ฯ
Extremely rare deal! The price is more than 2 standard deviations below the historical average.
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) ยท guide | DDR3 |
CapacityTotal kit memory size ยท guide | 4GB |
CAS LatencyClock cycles response delay ยท guide | CL9 |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) ยท guide | SO-DIMM |
ASIN | B0CHGNH7J4 |
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.
Cheaper Alternatives
Same 4GB DDR3 โ lower $/GB than this product
Timetec
Timetec 4GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for Mac Book, Mac Book Pro, iMac, Mac mini (Late 2008, Early/Mid/Late 2009, Mid 2010) SODIMM Memory MAC RAM Upgrade44% cheaper/GB
Timetec
Timetec 4GB DDR3 1066MHz PC3-8500 Non-ECC Unbuffered 1.5V CL7 2Rx8 Dual Rank 204 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade (4GB)44% cheaper/GB
MemoryMasters
MemoryMasters Kingston Value RAM 4GB 1333MHz PC3-10600 DDR3 Non-ECC CL9 SODIMM SR X8 Notebook Memory (KVR13S9S8/4)41% cheaper/GB
Ranked by lowest $/GB. Same 4GB DDR3 SO-DIMM only. Prices updated daily.
DDR3 Price by Capacity
Average $/GB across all DDR3 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 4GBThis product | $7.51/GB |
| 8GB | $5.02/GB |
| 16GB | $4.11/GB |
| 32GB | $4.24/GB |
| 64GB | $4.22/GB |
| 128GB | $5.29/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 DDR3 SO-DIMM in each tier today.
Current
4GB
$24.99$6.25/GBPrices are the lowest available in each tier from our daily database โ verify on Amazon before purchasing. Only DDR3 SO-DIMM modules compared.
Also available from OWC
Same brand, different configurations
OWC
OWC 16GB (2X 8GB) 1333MHz DDR3 SO-DIMM PC3-10600 204Pin SO-DIMM CL9 Memory RAM Upgrade Module for iMac, Mac mini, MacBook Pro and PC Laptops (OWC1333DDR3S16P)
OWC
OWC 16.0GB (4 x 4GB) 1333MHz DDR3 SO-DIMM PC3-10600 204Pin SO-DIMM CL9 Memory RAM Upgrade Module for iMac and PC Laptops (OWC1333DDR3S16S)
OWC
OWC 32GB (4 x 8GB) PC14900 DDR3 1866MHz SO-DIMMs Memory RAM Upgrade Compatible with 2015 (Late) iMac 27 w/Retina 5K Models and Compatible PCs (OWC1867DDR3S32S)
Related pages
Frequently Asked Questions
Is the OWC 4GB DDR3 compatible with my motherboard?
This module is compatible with Laptop โ DDR3 SO-DIMM. Always verify with your motherboard's QVL (Qualified Vendor List) before purchasing, as compatibility can vary by board revision.
Is this DDR3 module a good deal right now?
At $6.25/GB, this module is 50% below the overall DDR3 market average $/GB across all capacities. Deal score: 92/100. Check the price history chart above to see how the price has moved recently. Prices are updated daily from Amazon.
What is DDR3 RAM used for?
This RAM module is designed for laptop and mobile systems using SO-DIMM slots. Check your system's specifications to confirm compatibility before purchasing.
How does OWC RAM compare to other brands?
OWC has 99 modules tracked with an average customer rating of 4.4โ . This specific module is 50% below the overall DDR3 market average $/GB. Browse all OWC 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 DDR3 RAM
Samsung
Samsung 4GB DDR3 Memory SO-DIMM 204pin PC3L-12800S 1600MHz M471B5273CH0-YK0
Timetec
Timetec 4GB DDR3 1066MHz PC3-8500 Non-ECC Unbuffered 1.5V CL7 2Rx8 Dual Rank 204 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade (4GB)
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 I earn from qualifying purchases. Prices updated daily. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.