OWC - Memory Upgrade Kit (256 GB) 4 x 64 GB PC23400 DDR4 ECC-R 2933MHz RDIMMs for Mac Pro 2019 models

£1,909.32 £7.46/GB

39% cheaper per GB than the average 256GB DDR4 kit we track.

Mac DDR4 ECC

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Specification

Price history

Typical price (median) 90-day £1,953.52 12-month £1,953.52 12-month low £1,930.81 All-time low £685.12 (2023-06-27)

12-month low Today’s price is 2% below this kit’s typical price for the past year, and it has been cheaper than this for 6% of that year (last on 21 Aug 2026). Why medians, not averages ›

30-day avg £1,932.5790-day avg £1,945.21180-day avg £1,950.97 (averages are pulled up by price spikes; the medians above are the better guide)

Other DDR4 DIMM capacities

Fewer than three exact matches, so this shows other DDR4 DIMM kits ranked by £/GB. See all ›

	£/GB	Price	Capacity	Manufacturer	For	Type	Form Factor	ECC / Buffered	Description
	£1.41best £/GB	£90.00★	64GB	Dell	Server	DDR4	DIMM 2666MHz	Buffered	Dell 64 GB Certified Memory Module DDR4 LRDIMM 2666Mhz 4Rx4, 0A9781930, 808884 (DDR4 LRDIMM 2666Mhz 4Rx4)Buy📈-
	£1.82	£1,864.89	1024GB (8x128GB)	OWC	Server	DDR4	DIMM 3200MHz	ECC	OWC Upgrade Kit DDR4 3200 PC4-25600 CL22 4Rx4 288 Pin 1.2V ECC DIMM Compatible with ThinkSystem SR645 Epyc SR665 Epyc Black Chips, 1TB (8x128GB) 49-SFBuy📈-
	£2.47	£79.00	32GB	Samsung	Server	DDR4	DIMM 2666MHz	ECC	Samsung M393A4K40BB2-CTD6Q Memory Module 32 GB DDR4 2666 MHz 288-Pin DIMMBuy📈-
	£2.99	£95.61	32GB	MENDUNER	Desktop	DDR4	DIMM 2666MHz	-	MENDUNER DDR4 2666MHz Desktop RAM Memory Module, 32GB 1.2V Gaming RAM with Aluminium Alloy Heatsink for PC Computer, 21300 Bandwidth, CL19, Compatible with 2400MHz/2133MHz (8GB)Buy📈★☆☆☆☆1
	£3.11	£199.00	64GB	Origin	Server	DDR4	DIMM 2133MHz	ECCBuffered	64GB DDR4 2133MHz LRDIMM 4Rx4 ECC 1.2VBuy📈-
	£3.67	£58.72▼ 23%	16GB (2x8GB)	Glowster	Desktop	DDR4	DIMM 3200MHz	-	DDR4 RAM Memory Module 16GB (2x8GB) 3200Mhz, Black, Ideal for Gaming and Performance Improvement in High Performance Computers.Buy📈-

About this kit

• 256GB Memory Kit (4 x 64GB)
• 2933 MHz Clock Speed
• PC4-23400
• 288-Pin R-DIMM
• Lifetime OWC Limited Warranty

Boost your supported Mac Pro's performance with the 256GB DDR4 2933 MHz R-DIMM Memory Upgrade Kit from OWC / Other World Computing. Delivering speeds up to 2933 MHz, this 4 x 64GB kit is a memory upgrade designed to improve your computer's start-up times, overall responsiveness, and ability to handle data-intensive applications.

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