Best H12dsg O CPU Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.
Advertiser Disclosure
2
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

OWC

OWC 128GB Memory RAM Compatible with Supermicro Motherboard H12DSG-O-CPU

ECC LOAD REDUCED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED -or- ECC REGISTERED memory.
OWC 128GB UPGRADE: Consists of a single 128GB DDR4 3200 PC4-25600 CL22 4Rx4 288-pin 1.2V ECC Load Reduced DIMM Memory RAM Module Upgrade compatible with Supermicro Motherboard models H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C And H12SSL-i.
100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
MAXIMIZE YOUR SERVER: With OWC's ECC Load-Reduced Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing.
Details & specs
Check Price
on Amazon.com
Also available at
eBay See New
3
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

OWC

OWC 2TB Memory RAM Kit Compat with Supermicro Motherboard H12DSG-O-CPU | 2TB (8x256GB) PC4-25600 DDR4 3200MHz ECC LRDIMM 8Rx4 CL22 288-pin DIMM, Also Compat with H12DST-B H12DSU-iN H12SSL-C H12SSL-i

ECC LOAD REDUCED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED -or- ECC REGISTERED memory.
OWC 2TB UPGRADE: Consists of 8pcs of 256GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Load Reduced DIMM Memory RAM Module Upgrade compatible with Supermicro Motherboard models H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C And H12SSL-i.
100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
MAXIMIZE YOUR SERVER: With OWC's ECC Load-Reduced Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
INDUSTRY LEADING: Consumer-friendly 1 Year Advanced Replacement Warranty, which includes Free Tech Support by Other World Computing.
Details & specs
Check Price
on Amazon.com
4
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

128GB 2X64GB DDR4 3200MHz PC4-25600 2Rx4 1.20V CL22 288-PIN ECC Registered RDIMM NEMIX RAM Server Memory KIT Compatible with Supermicro H12 Series (32-Slot) Motherboards

EXACT-MATCH UPGRADE — 128GB (2X64GB) kit DDR4-3200 (PC4-25600), 2Rx4 ECC Registered RDIMM, 1.20V, CL22, 288-pin. The precise rank, voltage, and timing your system's memory controller expects, so it's recognized at full capacity and runs at its rated speed.
VERIFIED FITMENT — Compatible with the H12DSU-iNR / H12DSU-iN / H12DSG-Q-CPU6 / H12DSG-O-CPU / H12DGQ-NT6 / H12DGO-6 motherboard. The RDIMM form factor this board requires. Spec-matched to your board's memory-population rules.
ENTERPRISE STABILITY — Registered (buffered) architecture offloads the memory controller so every slot runs fully populated at full capacity, while ECC catches and corrects single-bit errors on the fly — stopping silent data corruption and unplanned reboots before they reach production.
CHECK YOUR CONFIG — System and motherboard memory support varies by model. Consult your system or motherboard manual for supported capacities, approved DIMM population order, and installation steps before purchase.
LIFETIME SUPPORT — Backed by a lifetime replacement warranty and free US-based technical support.
Details & specs
Check Price
on Amazon.com
5
ProductPage Image
Thumbnail
Thumbnail

A-Tech 16GB RAM for Supermicro Super H12DSG-O-CPU, H12SSW-AN6, X11DPT-PS, X11SPA-TF, X11SPG-TF, X11SRi-IF, X12DPL-i6, X12DPU-6 | DDR4 2933MHz PC4-23400 ECC RDIMM 1Rx4 Registered Server Memory Upgrade

Server Memory RAM compatible for the Supermicro SUPER models: H12DSG-O-CPU, H12SSW-AN6, X11DPT-PS, X11SPA-TF, X11SPG-TF, X11SRi-IF, X12DPL-i6, X12DPU-6
Single 16 GB Module | DDR4 2933 MHz ( PC4-23400 / PC4-2933 ) | DDR4 DIMM ( 288-Pin ) | 1Rx4 | ECC Registered | 1.2V - DDR4 Standard Voltage
ECC Registered; JEDEC DDR4 standard 1.2V
Improves performance by expanding your system's memory (RAM) capacity, allowing your system to take on more while maintaining a fast and smooth experience
Quick and easy to install at home, no expertise required (Please refer to your system's manual for seating and channel guidelines)
All A-Tech memory modules undergo stringent quality control testing to ensure dependable and reliable performance
Backed by A-Tech's Limited Lifetime Warranty and supported by our knowledgeable Tech Team available to help before and after your purchase
Check Price
on Amazon.com
6
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

OWC

OWC 256GB Memory RAM Kit Compat with Supermicro Motherboard H12DSG-O-CPU

ECC LOAD REDUCED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED -or- ECC REGISTERED memory.
OWC 256GB UPGRADE: Consists of 2pcs of 128GB DDR4 3200 PC4-25600 CL22 4Rx4 288-pin 1.2V ECC Load Reduced DIMM Memory RAM Module Upgrade compatible with Supermicro Motherboard models H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C And H12SSL-i.
100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
MAXIMIZE YOUR SERVER: With OWC's ECC Load-Reduced Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing.
Details & specs
Check Price
on Amazon.com
Also available at
eBay See New
7
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

OWC

OWC 512GB Memory RAM Kit Compat with Supermicro Motherboard H12DSG-O-CPU

ECC LOAD REDUCED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED -or- ECC REGISTERED memory.
OWC 512GB UPGRADE: Consists of 2pcs of 256GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Load Reduced DIMM Memory RAM Module Upgrade compatible with Supermicro Motherboard models H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C And H12SSL-i.
100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
MAXIMIZE YOUR SERVER: With OWC's ECC Load-Reduced Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
INDUSTRY LEADING: Consumer-friendly 1 Year Advanced Replacement Warranty, which includes Free Tech Support by Other World Computing.
Details & specs
Check Price
on Amazon.com
Also available at
eBay See New
8
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

OWC

OWC 512GB Memory RAM Kit Compat with Supermicro Motherboard H12DSG-O-CPU

ECC LOAD REDUCED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED -or- ECC REGISTERED memory.
OWC 512GB UPGRADE: Consists of 4pcs of 128GB DDR4 3200 PC4-25600 CL22 4Rx4 288-pin 1.2V ECC Load Reduced DIMM Memory RAM Module Upgrade compatible with Supermicro Motherboard models H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C And H12SSL-i.
100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
MAXIMIZE YOUR SERVER: With OWC's ECC Load-Reduced Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing.
Details & specs
Check Price
on Amazon.com
Also available at
eBay See New
9
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

32GB 2X16GB DDR4 3200MHz PC4-25600 1Rx8 1.20V CL22 288-PIN ECC Registered RDIMM NEMIX RAM Server Memory KIT Compatible with Supermicro H12 Series (32-Slot) Motherboards

EXACT-MATCH UPGRADE — 32GB (2X16GB) kit DDR4-3200 (PC4-25600), 1Rx8 ECC Registered RDIMM, 1.20V, CL22, 288-pin. The precise rank, voltage, and timing your system's memory controller expects, so it's recognized at full capacity and runs at its rated speed.
VERIFIED FITMENT — Compatible with the H12DSU-iNR / H12DSU-iN / H12DSG-Q-CPU6 / H12DSG-O-CPU / H12DGQ-NT6 / H12DGO-6 motherboard. The RDIMM form factor this board requires. Spec-matched to your board's memory-population rules.
ENTERPRISE STABILITY — Registered (buffered) architecture offloads the memory controller so every slot runs fully populated at full capacity, while ECC catches and corrects single-bit errors on the fly — stopping silent data corruption and unplanned reboots before they reach production.
CHECK YOUR CONFIG — System and motherboard memory support varies by model. Consult your system or motherboard manual for supported capacities, approved DIMM population order, and installation steps before purchase.
LIFETIME SUPPORT — Backed by a lifetime replacement warranty and free US-based technical support.
Details & specs
Check Price
on Amazon.com
10
ProductPage Image
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

OWC

OWC 1TB Memory RAM Kit Compat with Supermicro Motherboard H12DSG-O-CPU

ECC LOAD REDUCED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED -or- ECC REGISTERED memory.
OWC 1TB UPGRADE: Consists of 8pcs of 128GB DDR4 3200 PC4-25600 CL22 4Rx4 288-pin 1.2V ECC Load Reduced DIMM Memory RAM Module Upgrade compatible with Supermicro Motherboard models H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C And H12SSL-i.
100% COMPLIANT: JEDEC-Standard and ROHS Compliant. Warranty-Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs.
MAXIMIZE YOUR SERVER: With OWC's ECC Load-Reduced Server Memory, you will extend the life of your old infrastructure or save money when building a new one.
INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing.
Details & specs
Check Price
on Amazon.com
Also available at
eBay See New
Our #1 Pick Today
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 H12dsg O CPU deals are available from: Amazon, starting from $171.06.

The lowest price we found is $171.06 while the highest is $15,123.92. Prices for the best H12dsg O CPU deals average at $3,840.07.