HMCG78AGBUA081N - 16GB DDR5-5600 UDIMM | SK Hynix | Desktop
MPN： HMCG78AGBUA081N ✓ 啟用中| 數量 | 單價 | 小計 |
|---|---|---|
| 1 | $244.95 | $244.95 |
| 10 | $249.9 | $2,499.00 |
| 100 | $254 | $25,400.00 |
| 500 | $265 | $132,500.00 |
| 1,000 | $279.2 | $279,200.00 |
HMCG78AGBUA081N 概覽
A UDIMM (unbuffered dual in-line memory module) is a memory module whose signals connect directly from the DRAM chips to the memory controller without an additional register or buffer chip. In the memory hierarchy, it sits below registered (RDIMM) and load-reduced (LRDIMM) server modules, which trade latency for capacity. UDIMMs are the standard choice for consumer and commercial desktops, workstations, and entry-level embedded boards, where capacity per channel (typically two slots) is limited and lowest-possible latency is preferred.
Key features of this module include 16GB capacity organized as 2Gx64, built from eight 2Gx8 DDR5 DRAM devices in a single-rank (1Rx8) configuration. It runs at the DDR5-5600 JEDEC-standard speed grade, corresponding to PC5-44800 bandwidth, with a CAS latency of CL46 at the standard 1.1V operating voltage. The 288-pin package uses the DDR5 UDIMM edge connector with on-module Power Management IC (PMIC) that moves voltage regulation off the motherboard, improving signal integrity and power efficiency versus DDR4.
Technically, DDR5 doubles the number of independent banks per device (32 banks across 8 bank groups) versus DDR4 and splits each module into two independent 32-bit sub-channels, improving effective bandwidth utilization for multi-threaded workloads. The single-rank x8 organization simplifies command scheduling and typically yields strong overclocking headroom on enthusiast platforms; this Hynix die family is well known in the overclocking community.
Typical applications include desktop PC memory upgrades, workstation builds, mini-PCs, industrial control PCs, and gaming systems requiring validated JEDEC-compliant DDR5-5600 memory.
Design consideration: verify your CPU and motherboard BIOS officially support DDR5-5600 UDIMMs in the intended slot configuration; many consumer platforms de-rate to lower speeds with four populated DIMM slots.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 HMCG78AGBUA081N — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： HMCG78AGBUA081N （相同外形與佔位） — 差異在於 Data Rate, ECC, Form Factor, Memory Type, Module Type.
快速比較工具 — 選擇替代零件進行並排比較：
HMCG78AGBUA084N
✅ 直接替換 ⚠️ 規格未經驗證✓ 有庫存
$262.5 / 單位
查看資料表 →HMCG78AEBRA107N
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →HMCG78MEBSA092N
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$286.3636 / 單位
查看資料表 →M323R2GA3BB0-CWM
✅ 直接替換📋 參考替代品（不在目錄中）
CT16G56C46U5
✅ 直接替換📋 參考替代品（不在目錄中）
KVR56U46BS8-16
✅ 直接替換📋 參考替代品（不在目錄中）
HMCG78AGBUA081N 最大額定值與電氣特性
| 記憶體類型 | DDR5 SDRAM |
| Capacity | 16 GB (2Gx64) |
| Form Factor | 288-pin UDIMM |
| 資料速率 | 5600 MT/s (PC5-44800) |
| CAS 延遲 | CL46 |
| Operating Voltage | 1.1 V |
| ECC | Non-ECC |
| Buffering | Unbuffered |
| 組織 | 1Rx8 (Single Rank, x8 DRAM) |
| DRAM Composition | 8 x 2Gx8 DDR5 DRAM |
| Ranks | Single Rank |
| Compatible Platforms | Desktop |
| Module Class | SDP-UDIMM |
| On-module PMIC | Yes (DDR5 standard) |
| 安裝類型 | Slot-in DIMM connector |
HMCG78AGBUA081N standard 腳位配置指南
HMCG78AGBUA081N（standard 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： HMCG78AGBUA081N.
請參閱 資料表 以查看完整腳位配置。
典型應用
HMCG78AGBUA081N 適用於 6 應用s: Desktop PC Memory Upgrade, DDR5 Overclocking and Enthusiast Builds, Workstation Content Creation, Industrial and Embedded PCs, Mini PC and SFF Systems, Gaming PC Builds.
Desktop PC Memory Upgrade
The HMCG78AGBUA081N is purpose-built for desktop DDR5 memory upgrades, providing 16GB per module at DDR5-5600 with CL46 timing at 1.1V. Its single-rank 1Rx8 x8 organization keeps the memory controller load light, which preserves speed headroom when populating two DIMM slots per channel on consumer platforms such as Intel 600/700-series and AMD AM5 boards. The module plugs into any 288-pin DDR5 UDIMM slot; DDR5's dual 32-bit sub-channel architecture improves effective bandwidth for everyday multitasking. Because it is non-ECC and unbuffered, it matches exactly what desktop chipsets require - RDIMMs will not POST on these boards. Verify the motherboard QVL supports 5600 MT/s with a single module per channel; otherwise the module degrades gracefully to a lower JEDEC speed.
推薦
DDR5 Overclocking and Enthusiast Builds
Enthusiast builders favor the HMCG78AGBUA081N because its Hynix single-rank x8 die family has demonstrated stable operation above 8000 MT/s on high-end overclocking boards, as documented in community forums such as Reddit r/overclocking. At stock settings the module runs a conservative 5600 MT/s CL46 at 1.1V, leaving substantial voltage and timing headroom for manual profiles. Single-rank modules simplify command scheduling and reduce controller stress compared with dual-rank sticks, a key factor when pushing memory fabric frequencies on platforms like the ASUS Apex series. For best results, pair identical sticks in a two-module kit configuration and raise VDD/VDDQ incrementally while validating with memory stress tests. Note that any overclock falls outside JEDEC specification and must be validated per-board.
推薦
Workstation Content Creation
For workstation workloads - video editing, 3D rendering, CAD - the HMCG78AGBUA081N supplies 16GB of DDR5-5600 bandwidth (PC5-44800) per stick, and multiple sticks scale capacity across available UDIMM slots. DDR5's doubled bank count (32 banks, 8 bank groups) versus DDR4 improves concurrent read/write efficiency in bursty, memory-hungry applications like After Effects, Blender, and simulation tools. The 1.1V operating voltage with on-module PMIC reduces platform power draw and thermal load inside compact workstation chassis compared with DDR4-3200 alternatives. Since the module is non-ECC unbuffered, it suits professional-creator workstations but not ECC-requiring server boards. Populate matched modules per channel to enable full dual-sub-channel interleaving and maximize sustained bandwidth for large asset streaming.
推薦
Industrial and Embedded PCs
Industrial PCs, edge gateways, and embedded controllers built on desktop-class chipsets accept the HMCG78AGBUA081N as a JEDEC-standard DDR5-5600 UDIMM. Its 1.1V rail reduces system-level power consumption and heat in fanless or sealed enclosures, while the on-module PMIC offloads voltage regulation from the carrier board, simplifying power-tree design for embedded motherboards. The 16GB capacity comfortably hosts containerized edge runtimes and local inference workloads. Integration cautions: confirm the industrial CPU's memory controller certifies 5600 MT/s operation, since many embedded SKUs officially support lower grades such as DDR5-4800; the module will down-clock accordingly. Also verify mechanical clearance, as 288-pin UDIMM height can conflict with low-profile chassis or shrouds.
推薦
Mini PC and SFF Systems
Mini PCs and small-form-factor systems with DDR5 SO-DIMM-free, UDIMM-based designs use the HMCG78AGBUA081N to reach 16GB of DDR5-5600 memory in a single slot, with a second module enabling dual-channel. DDR5's two independent 32-bit sub-channels per module already deliver improved concurrency for integrated-GPU memory sharing, which matters in systems without discrete graphics where bandwidth is contested between CPU and iGPU. The module's standard voltage of 1.1V aligns with the tight thermal budgets of compact chassis. Check minimum system requirements: some mini PC firmware requires single-module-per-channel operation at full speed, and mixed-rank configurations may de-rate to 4800 MT/s. Non-ECC unbuffered operation matches typical consumer-embedded chipsets in these systems.
推薦
Gaming PC Builds
Gaming desktops on Intel 700-series or AMD AM5 platforms benefit from the HMCG78AGBUA081N's DDR5-5600 JEDEC baseline, which lifts minimum frame rates versus DDR4-3200 in memory-sensitive titles. The 16GB single-stick capacity supports a two-stick 32GB dual-channel configuration, the current sweet spot for modern games plus streaming overlays. Hynix single-rank x8 dies leave headroom for manual EXPO/XMP-class tuning beyond 6000 MT/s on AM5, where the memory fabric clock directly influences game performance. The module is non-ECC unbuffered, matching consumer chipsets, and its 1.1V PMIC-managed power keeps VRM thermal load low. Confirm motherboard QVL listing for 5600 MT/s two-DIMM operation, and populate slots per the manual for optimal signal topology.
推薦
推薦產品摘要
工程參考資料，適用於 HMCG78AGBUA081N — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | HMCG78AGBUA084N | M323R2GA3BB0-CWM | CT16G56C46U5 | KVR56U46BS8-16 |
|---|---|---|---|---|---|
| Package | 288-pin UDIMM (SDP-UDIMM) | 288-pin UDIMM - same | 288-pin UDIMM - same | 288-pin UDIMM - same | 288-pin UDIMM - same |
| Brand | SK Hynix | SK Hynix | Samsung Electronics | Crucial (Micron Technology) | Kingston |
| Capacity | 16 GB | 16 GB | 16 GB | 16 GB | 16 GB |
| Data Rate | 5600 MT/s (PC5-44800) | 5600 MT/s | 5600 MT/s | 5600 MT/s | 5600 MT/s |
| CAS Latency | CL46 | CL46 | CL46 | CL46 | CL46 |
| Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| ECC / Buffering | Non-ECC, Unbuffered | Non-ECC, Unbuffered | Non-ECC, Unbuffered | Non-ECC, Unbuffered | Non-ECC, Unbuffered |
主要差異化特點
- Proven overclocking headroom (對比CT16G56C46U5)
- Faster JEDEC speed grade than server-sibling modules (對比HMCG94MEBQA121N)
- Genuine OEM single-rank simplicity (對比KVR56U46BS8-16)
設計說明
Never install the HMCG78AGBUA081N in a server board that requires registered RDIMMs - this is an unbuffered non-ECC module and RDIMM-only memory controllers will not train it. Conversely, ECC UDIMM boards can run non-ECC modules but will operate without error checking. Also verify population rules: many consumer platforms officially support DDR5-5600 only with one module per channel; two DIMMs per channel (2DPC) typically de-rates to 4400-5200 MT/s per board vendor documentation.
The module uses the DDR5-standard on-module Power Management IC (PMIC), which converts the 5V slot supply down to the 1.1V DRAM rail. This shifts thermal load onto the module itself rather than the motherboard VRM. In tightly packed SFF builds, ensure some airflow over the DIMM slot; estimate: a 16GB DDR5 module under load typically dissipates 2-4W, and PMIC efficiency losses add to this, so stagnant-air enclosures should confirm slot-area temperature stays within the module's rated operating range.
For overclocking above 7000 MT/s, install the two matched modules in the slots the motherboard manual designates for two-stick operation (usually slots A2/B2), which the board vendor has validated for the shortest fly-by routing. Hynix single-rank x8 dies in this module family are community-validated above 8000 MT/s on enthusiast boards, but that operation is outside JEDEC spec: raise VDD/VDDQ from 1.1V incrementally, validate with extended memory stress testing, and expect per-IMC (integrated memory controller) silicon lottery variance.
合規資訊
Compliance data not stated in provided distributor listings; DDR5 modules from tier-1 manufacturers are typically RoHS-compliant but this must be confirmed from SK Hynix official product documentation.
