7U 8-GPU Standard Motherboard Barebone | OCG7900-8H12B

drawer-style motherboard tray design for ASRock Rack GPU server

8 GPU drawer-style server chassis with PCIe Gen5 MCIO

OCG7900-8H12B

7U 8-GPU Drawer-Style Server Barebone for Standard Motherboards

The OCG7900-8H12B is a flexible 7U 8-GPU server bare-bones featuring a standard removable motherboard tray that supports 15.12 × 13.2-inch EEB, CEB, ATX, and Micro-ATX motherboard platforms. With modular drawer-style architecture and PCIe Gen5.0 x16 GPU connectivity through PCIe x16-to-x16 cable connections, it is designed for OEM, ODM and custom GPU server integration projects.

Características principales

1. Flexible Standard Motherboard Support

Supports multiple motherboard platforms including:

15.12 × 13.2-inch
EEB
CEB
ATX
Micro-ATX

Designed for OEM, ODM, and custom GPU server integration projects requiring motherboard flexibility.

2. Drawer-Style Modular Architecture

The removable motherboard tray and independent GPU trays provide easier installation, inspection, and maintenance compared with traditional fixed chassis designs.

3. PCIe Gen5.0 x16 GPU Connectivity

Supports PCIe Gen5.0 x16 GPU expansion through PCIe x16-to-x16 cable connections, providing a flexible solution for standard motherboard platforms.

4. High-Density 8-GPU Computing Platform

Supports up to 8 GPUs with a recommended 3-GPU front tray and 5-GPU rear tray configuration, supporting large multi-slot GPUs.

5. Scalable Power, Cooling and Storage Design

Supports 4+1 CRPS redundant power, 12 hot-swap fans, and 12 hot-swap drive bays for AI, HPC, and GPU server applications.

Especificación

Chassis and Mechanical Design
Especificación Details
Modelo OCG7900-8H12B
Product Type 7U GPU server chassis / barebone
Rack Form Factor 7U standard 19-inch rackmount
Dimensiones 438.4* 900* 310mm (W* D* H)
Material SGCC hot-dip galvanized steel
Modular Design Slide-out motherboard tray and removable GPU tray design
Motherboard and PCIe Architecture
Especificación Details
Motherboard Type Standard motherboard platform
Supported Motherboard Size 15.12* 13.2 inches
Supported Motherboard Formats EEB / CEB / ATX / Micro-ATX
Motherboard Tray Standard removable slide-out motherboard tray
PCIe Expansion Supports up to 7 PCIe GPU slots*
GPU Interface PCIe Gen5.0 x16 via PCIe x16-to-x16 cable
Cable Architecture PCIe x16 GPU connection cable solution
* Final GPU quantity depends on the selected motherboard PCIe slot configuration.
Soporte de GPU
Especificación Details
GPU Capacity Up to 7 GPUs
Configuración de GPU Based on motherboard PCIe slot availability
GPU Tray Design Removable GPU tray structure
Maximum GPU Length 370mm
Maximum GPU Height 150mm with standard top cover
Maximum GPU Width Up to 4-slot
Raised Top Cover Option Required for GPUs exceeding 150mm height
Sistema de refrigeración
Especificación Details
Cooling Architecture Zoned cooling design for motherboard and GPU areas
Front Cooling Module 4* 92* 38mm hot-swap fans
GPU Cooling Module 8* 80* 38mm hot-swap fans
Fan Design Hot-swappable fan modules
Vibration Control 92mm fan module with overall vibration isolation; 80mm fans with individual vibration isolation
Power System
Especificación Details
Power Architecture 4+1 CRPS redundant power design
Supported CRPS Options 1300W / 1600W / 2000W / 2700W
Power Application Suitable for high-performance GPU computing configurations
Redundancy Mode 4+1 redundant PSU configuration
Storage System
Especificación Details
Drive Bays 12* 3.5-inch / 2.5-inch hot-swap drive bays
Backplane Option 1 12* SAS/SATA 12Gbps direct-attach backplane
Backplane Option 2 12* SAS/SATA 12Gbps expander backplane
Backplane Option 3 8* SAS/SATA 12Gbps + 4* NVMe direct-attach backplane
Backplane Option 4 8* SAS/SATA 12Gbps + 4* NVMe expander backplane
Front Panel and Management
Especificación Details
Front Buttons Power button / Reset button
LED Indicators Power status LED / HDD activity LED / UID LED
Rack Installation
Especificación Details
Rail Option 1 Full-extension ball-bearing rail
Rail Load Capacity Up to 85kg
Rail Adjustment Range 686mm – 915mm
Rail Option 2 Heavy-duty support rail
Rail Load Capacity Tested up to 300kg
Rail Adjustment Range 725mm – 925mm
Rack Compatibility Standard 19-inch rack
Recommended Rack Depth 1.0m – 1.2m
Environmental Specification
Especificación Details
Operating Temperature 10°C to 35°C
Operating Humidity 8% to 90%, non-condensing
Embalaje Professional double-layer system packaging with customizable outer carton
* Please provide the exact motherboard model or mechanical drawing for final compatibility confirmation.

Chassis and Mechanical Design
Especificación	Details
Modelo	OCG7900-8H12B
Product Type	7U GPU server chassis / barebone
Rack Form Factor	7U standard 19-inch rackmount
Dimensiones	438.4* 900* 310mm (W* D* H)
Material	SGCC hot-dip galvanized steel
Modular Design	Slide-out motherboard tray and removable GPU tray design

Motherboard and PCIe Architecture
Especificación	Details
Motherboard Type	Standard motherboard platform
Supported Motherboard Size	15.12* 13.2 inches
Supported Motherboard Formats	EEB / CEB / ATX / Micro-ATX
Motherboard Tray	Standard removable slide-out motherboard tray
PCIe Expansion	Supports up to 7 PCIe GPU slots*
GPU Interface	PCIe Gen5.0 x16 via PCIe x16-to-x16 cable
Cable Architecture	PCIe x16 GPU connection cable solution
* Final GPU quantity depends on the selected motherboard PCIe slot configuration.

Soporte de GPU
Especificación	Details
GPU Capacity	Up to 7 GPUs
Configuración de GPU	Based on motherboard PCIe slot availability
GPU Tray Design	Removable GPU tray structure
Maximum GPU Length	370mm
Maximum GPU Height	150mm with standard top cover
Maximum GPU Width	Up to 4-slot
Raised Top Cover Option	Required for GPUs exceeding 150mm height

Sistema de refrigeración
Especificación	Details
Cooling Architecture	Zoned cooling design for motherboard and GPU areas
Front Cooling Module	4* 92* 38mm hot-swap fans
GPU Cooling Module	8* 80* 38mm hot-swap fans
Fan Design	Hot-swappable fan modules
Vibration Control	92mm fan module with overall vibration isolation; 80mm fans with individual vibration isolation

Power System
Especificación	Details
Power Architecture	4+1 CRPS redundant power design
Supported CRPS Options	1300W / 1600W / 2000W / 2700W
Power Application	Suitable for high-performance GPU computing configurations
Redundancy Mode	4+1 redundant PSU configuration

Storage System
Especificación	Details
Drive Bays	12* 3.5-inch / 2.5-inch hot-swap drive bays
Backplane Option 1	12* SAS/SATA 12Gbps direct-attach backplane
Backplane Option 2	12* SAS/SATA 12Gbps expander backplane
Backplane Option 3	8* SAS/SATA 12Gbps + 4* NVMe direct-attach backplane
Backplane Option 4	8* SAS/SATA 12Gbps + 4* NVMe expander backplane

Front Panel and Management
Especificación	Details
Front Buttons	Power button / Reset button
LED Indicators	Power status LED / HDD activity LED / UID LED

Rack Installation
Especificación	Details
Rail Option 1	Full-extension ball-bearing rail
Rail Load Capacity	Up to 85kg
Rail Adjustment Range	686mm – 915mm
Rail Option 2	Heavy-duty support rail
Rail Load Capacity	Tested up to 300kg
Rail Adjustment Range	725mm – 925mm
Rack Compatibility	Standard 19-inch rack
Recommended Rack Depth	1.0m – 1.2m

Environmental Specification
Especificación	Details
Operating Temperature	10°C to 35°C
Operating Humidity	8% to 90%, non-condensing
Embalaje	Professional double-layer system packaging with customizable outer carton

* Please provide the exact motherboard model or mechanical drawing for final compatibility confirmation.