Black vs Cms Computer RAM

Side-by-side price per gigabyte comparison across 22 products.

As of March 2026, Black averages $8.3946/GB across 7 products while Cms averages $5.9833/GB across 15 products on BuyPerUnit. Cms offers 29% better value per gigabyte for computer ram.

Black

Avg $/GB$8.3946

Best $/GB$8.0467

Price Range$8.0467 – $8.8119

Products7

Cheapest Product

Black Diamond Memory 64GB (2 x 32GB) 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD32GX22666MQN28

64GB · $514.99 · newegg

Cms

Better Value

Avg $/GB$5.9833

Best $/GB$2.8750

Price Range$2.8750 – $7.6250

Products15

Cheapest Product

CMS 32GB (4X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with Alienware Aurora R4 Desktop - C7

32GB · $92.00 · newegg

Top Products Compared

Rank	Brand	Product	Capacity	$/GB	Price	Retailer
1	Black	Black Diamond Memory 64GB (2 x 32GB) 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD32GX22666MQN28	64GB	$8.0467	$514.99	newegg
1	Cms	CMS 32GB (4X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with Alienware Aurora R4 Desktop - C7	32GB	$2.8750	$92.00	newegg
2	Black	Black Diamond Memory 32GB (2 x 16GB) 288-Pin PC RAM DDR4 2133 (PC4 17000) Desktop Memory Model BD16GX22133MQ25	32GB	$8.2497	$263.99	newegg
2	Cms	CMS 8GB (2X4GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with Dell Xps 8700 Desktop / Special Edition - A71	8GB	$3.6875	$29.50	newegg
3	Black	Black Diamond Memory 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600) Desktop Memory Model BD16GX23200MQ25	32GB	$8.2809	$264.99	newegg
3	Cms	CMS 8GB (2X4GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with Gateway DX Desktop DX4885-UR21 - A74	8GB	$3.6875	$29.50	newegg
4	Black	Black Diamond Memory 16GB 260-Pin DDR4 SO-DIMM DDR4 2133 (PC4 17000) Laptop Memory Model BD16G2133MQN25	16GB	$8.3744	$133.99	newegg
4	Cms	CMS 8GB (2X4GB) DDR3 10600 1333MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Gateway Dx Desktop Dx4840-07, Dx4840-11E, Dx4840-15 - A69	8GB	$6.0000	$48.00	newegg
5	Black	Black Diamond Memory 16GB 288-Pin PC RAM DDR4 2400 (PC4 19200) Desktop Memory Model BD16G2400MQ25	16GB	$8.3744	$133.99	newegg
5	Cms	CMS 8GB (2X4GB) DDR3 10600 1333MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Gateway Desktop DX4870-UM20P, DX4870-UR20P - A69	8GB	$6.0000	$48.00	newegg

Which Should You Buy?

Based on current pricing data, Cms offers better overall value for computer ram at an average of $5.9833/GB compared to Black's $8.3946/GB — that's roughly 29% less per gigabyte.

Cms's best deal is the CMS 32GB (4X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with Alienware Aurora R4 Desktop - C7 (32GB) at $2.8750/GB, while Black's cheapest option is the Black Diamond Memory 64GB (2 x 32GB) 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD32GX22666MQN28 (64GB) at $8.0467/GB.

However, price per GB isn't everything — consider factors like warranty, performance specs, and your specific capacity needs. Check individual product pages for detailed specifications.

Frequently Asked Questions

Is Black or Cms cheaper per GB for computer ram?

As of March 2026, Cms averages $5.9833/GB compared to Black at $8.3946/GB. Cms is approximately 29% cheaper per gigabyte on average.

How many Black and Cms computer ram does BuyPerUnit track?

BuyPerUnit currently tracks 7 Black products and 15 Cms products in the computer ram category, all ranked by price per gigabyte.

What is the cheapest Black computer ram per GB?

The cheapest Black option is the Black Diamond Memory 64GB (2 x 32GB) 260-Pin DDR4 SO-DIMM DDR4 2666 (PC4 21300) Laptop Memory Model BD32GX22666MQN28 at $8.0467/GB ($514.99 for 64GB).

What is the cheapest Cms computer ram per GB?

The cheapest Cms option is the CMS 32GB (4X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with Alienware Aurora R4 Desktop - C7 at $2.8750/GB ($92.00 for 32GB).

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