why is there such a big price difference between buying single sims and dual packs, as its cheaper to buy two single sticks?

you are correct. The ones I am selling are brand new that came inside a laptop that I have upgraded with 32GB. the 2 x 8GB are Unused.

Is this compatible with my new HP Omen 17-ck1011na gaming laptop please?

Probably will work. I have HP ENVY 16-H0000NA and they work with that. I think your 17-ck1011na should already have 32gb of ram in it already though. So if you are looking to upgrade to 64gb this would not be the way to go as it's probably only got 2 so-dimm slots (you'd need to check this). For 64gb you'd have to use a 2x32gb kit and that might not work ( I had difficulty with a 64gb upgrade, faulty RAM might be have been the cause but I also think 32gb may be the limit for the HP BIOS in these laptops).

Is this compatible with i7 12th gen intel

Yes, it is fully compatible. I run an i7 and have had no issues with this RAM.

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Vengeance SODIMM DDR5 RAM 16GB (1x16GB) Up to 4800MHz CL40-40-40-77 1.1V Intel AMD Laptop Notebook Memory - Black (CMSX16GX5M1A4800C40)

Product ID: 450204308

Details

Brand
Corsair
Compatible devices
Laptop
Computer memory size
16 GB
Memory speed
4800 MHz
RAM memory technology
DDR5

⚡4800MHz blazing speed

💻16GB high-capacity SODIMM

🔋1.1V low power draw

$601.73

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Upgrade your laptop’s brainpower—because speed waits for no one!

BLAZING DDR 5 SPEED - Up to 4800MHz for lightning-fast multitasking and gaming performance
PLUG PLAY UPGRADE - Automatic max speed on compatible systems—no BIOS tweaks needed
FUTURE PROOF CAPACITY - 16GB DDR5 to handle demanding apps, games, and workflows effortlessly
POWER EFFICIENT DESIGN - Runs at just 1.1V to keep your laptop cooler and battery lasting longer
UNIVERSAL COMPATIBILITY - Fits nearly all Intel and AMD laptops with standard SODIMM form factor

The CORSAIR Vengeance SODIMM DDR5 RAM 16GB module delivers ultra-fast 4800MHz speeds and efficient 1.1V power consumption in a compact SODIMM form factor. Compatible with most Intel and AMD laptops, it offers a simple plug-and-play upgrade to boost gaming, multitasking, and productivity with a reliable lifetime warranty.

Specifications

ASIN	B09XB3PB8B
Best Sellers Rank	5,689 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 24 in Computer Memory
Brand	Corsair
Brand Name	Corsair
Column Address Strobe Latency	40
Compatible Devices	Laptop
Compatible devices	Laptop
Computer memory size	16 GB
Country of Origin	Taiwan
Customer Reviews	4.6 out of 5 stars 600 Reviews
Data Transfer Rate	76800000000 Bits Per Second
Form Factor	SO-DIMM
Global Trade Identification Number	00840006662235
Item Weight	0.01 Kilograms
Manufacturer	Corsair
Manufacturer Part Number	CMSX16GX5M1A4800C40
Memory Form Factor	SODIMM
Memory Generation	DDR5
Memory Speed	4800 MHz
Memory speed	4800 MHz
Model Name	CORSAIR VENGEANCE
Model Number	CMSX16GX5M1A4800C40
Number of Items	1
Number of Packs	1
Number of Pins	262
Product Features	High Performance
Product Warranty	Limited Lifetime
RAM Memory Technology	DDR5
RAM Size	16 GB
RAM memory technology	DDR5
Special feature	High Performance
UPC	840006662235
Unit Count	1.0 count
Voltage	1.1 Volts

Reviews

M**H

Highly recommended

Great product. Arrived on time. They work just fine.

20.10.2025

S**I

Amazing product.

Good product, no issues installing works perfectly.

1.02.2023

F**G

Beware of compatibility

Compatibility issue with ASUS NUC, causing intermittent hang up (black screen on my Ubuntu and even in BIOS menu). Thought it might be the problem of the OS or the NUC and sent back twice. Not until I bought and replace with Crucial ram did the problem gone. It took me more than 3 months to identify and passed whatever return period! Beware!

19.09.2025

K**N

Excellent upgrade for Acer laptops

Excellent upgrade for my Acer Nitro V5 laptop. Was recognized instantly and booted up just fine. Recommended upgrade!

5.10.2025

O**T

Very worst

Only single ram is in the box , box already opened

18.01.2024

A**A

Hope it'll be last longer.

All good for now and let's see after 3 months onwards, will write again if there is something 😌😌😌

13.09.2025

R**A

Muy buena RAM

Excelente memoria. Da un rendimiento muy bueno.

5.05.2025

A**R

stabiler Speicher

Der 16er Riegel Corsair RAM läuft in meinem UGREEN NASync DXP2800 (so ein NAS mit intel N100 und nur einem RAM Slot) und ersetzt den ursrpünglich verbauten 8GB DDR5 Riegel. Ich habe mit ein paar Containern und VMs mal den workload hochgetrieben, und konnte keine Probleme feststellen. Preis Leistung passt, ich gehe davon aus dass der Speicher keinen trouble machen wird.

22.07.2025

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$601.73

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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