100% Original Wholesale PowerEdge XE8640 XE8545 XE7745 Rack Server 4-way GPU Server 2U Rack Server

100% Original Wholesale PowerEdge XE8640 XE8545 XE7745 Rack Server 4-way GPU Server 2U Rack Server

Here’s a detailed comparison table for the Dell PowerEdge XE8640, XE8545, and XE7745 – three of Dell’s high-performance servers optimized for GPU-accelerated workloads, AI, and HPC applications:

Feature	PowerEdge XE8640	PowerEdge XE8545	PowerEdge XE7745
Generation	16th Gen (2024)	15th Gen (2023)	15th Gen (2023)
Form Factor	4U Rack Server	2U Rack Server	2U Rack Server
Processor	Dual AMD EPYC 9004 (up to 128C/256T)	Dual AMD EPYC 9004 (up to 128C/256T)	Dual AMD EPYC 9004 (up to 128C/256T)
GPU Support	8x NVIDIA H100 (SXM5)	4x NVIDIA H100 (FHFL)	4x NVIDIA H100 (FHFL)
GPU Density	Highest density: 8 GPUs in 4U	High density: 4 GPUs in 2U	Balanced density: 4 GPUs in 2U
Memory (RAM)	Up to 12TB DDR5 (32 DIMMs)	Up to 6TB DDR5 (16 DIMMs)	Up to 6TB DDR5 (16 DIMMs)
Storage	24x 2.5″ NVMe/SAS/SATA (front) + 4x E3.S (rear)	8x 2.5″ NVMe/SAS/SATA (front) + 2x E3.S (rear)	10x 2.5″ NVMe/SAS/SATA (front)
PCIe Slots	8x PCIe 5.0 x16 (GPUs) + 4x PCIe 5.0 x8	4x PCIe 5.0 x16 (GPUs) + 2x PCIe 5.0 x8	4x PCIe 5.0 x16 (GPUs) + 2x PCIe 5.0 x8
Networking	2x 200Gb/s NDR InfiniBand (optional) + 4x 100GbE	1x 200Gb/s NDR InfiniBand (optional) + 2x 100GbE	2x 100GbE (standard)
Power Supply	2800W Titanium (up to 4x PSUs)	2000W Titanium (up to 2x PSUs)	2000W Titanium (up to 2x PSUs)
Cooling	Direct Liquid Cooling (DLC) Support	Hybrid Air/Liquid Cooling	Air Cooling (standard)
RAID Support	PERC H965i (NVMe RAID)	PERC H965i (NVMe RAID)	PERC H755 (NVMe/SAS/SATA RAID)
Management	iDRAC9 with OpenBMC	iDRAC9 with OpenBMC	iDRAC9 with OpenBMC
Best Use Cases	– Large-scale AI/ML training – HPC simulations – Hyperscale inference	– AI training & inference – GPU-accelerated analytics – Virtualized GPUs	– Enterprise AI workloads – Mid-range HPC – Data analytics

1. Dell PowerEdge XE8640 – The Ultimate AI Supercomputer

Overview:
The PowerEdge XE8640 is Dell’s most powerful 4U GPU-accelerated server, purpose-built for large-scale AI training, scientific computing, and hyperscale workloads. With industry-leading 8x NVIDIA H100 Tensor Core GPUs in a single chassis, it delivers unprecedented performance for the most demanding AI models.

Key Features:

• Unmatched GPU Power: 8x NVIDIA H100 SXM5 GPUs (or AMD Instinct MI300X) with NVLink for GPU-to-GPU communication
• CPU Muscle: Dual 4th Gen AMD EPYC 9004 processors (up to 128 cores, 256 threads)
• Memory Capacity: 12TB DDR5 across 32 DIMM slots
• Storage:
  • 24x front-accessible 2.5″ NVMe drives + 4x rear E3.S EDSFF for ultra-fast storage
• Accelerated Networking:
  • 200Gb/s NDR InfiniBand or 400GbE options
  • GPUDirect RDMA for low-latency communication
• Advanced Cooling: Supports direct liquid cooling (DLC) for maximum thermal efficiency
• Power: 2800W Titanium redundant PSUs (up to 4)

Best For:

• Training large language models (LLMs) like GPT-4, Llama 2
• HPC simulations (climate modeling, computational fluid dynamics)
• Hyperscale inference workloads

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2. Dell PowerEdge XE8545 – High-Density 2U GPU Workhorse

Overview:
The PowerEdge XE8545 packs 4x NVIDIA H100 GPUs in a 2U form factor, delivering exceptional compute density for AI training and inference, data analytics, and virtualized GPU environments.

Key Features:

• GPU Configuration: 4x NVIDIA H100 FHFL GPUs with PCIe Gen5 connectivity
• CPU: Dual AMD EPYC 9004 (same as XE8640)
• Memory: 6TB DDR5 across 16 DIMMs
• Storage:
  • 8x 2.5″ front bays + 2x rear E3.S for mixed workloads
• Networking:
  • 100GbE standard, optional 200Gb InfiniBand
• Cooling: Hybrid air/liquid cooling support
• Power: 2000W Titanium PSUs (1+1 redundancy)

Best For:

• Enterprise AI model development
• GPU-accelerated databases and analytics
• Virtualized GPU environments (vGPU, VMware, Kubernetes)

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3. Dell PowerEdge XE7745 – Cost-Effective GPU Solution

Overview:
The PowerEdge XE7745 offers 4x GPUs in 2U at a more accessible price point, ideal for enterprises adopting AI or research institutions needing powerful but practical GPU resources.

Key Features:

• GPU Options: 4x NVIDIA H100 (PCIe) or A100/A40 for legacy workloads
• CPU: Dual AMD EPYC 9004 processors
• Memory: 6TB DDR5 (16 DIMMs)
• Storage: 10x 2.5″ front bays (all NVMe capable)
• Networking: Dual 100GbE standard
• Cooling: Air-cooled design (simpler deployment)
• Power: 2000W Titanium PSUs

Best For:

• Mid-range AI/ML workloads
• University research projects
• Edge AI deployments
• Render farms and media processing

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Comparison Summary

Feature	XE8640 (4U)	XE8545 (2U)	XE7745 (2U)
GPU Capacity	8x H100 (SXM5)	4x H100 (FHFL)	4x H100 (PCIe)
CPU	Dual AMD EPYC 9004	Dual AMD EPYC 9004	Dual AMD EPYC 9004
Memory	12TB DDR5	6TB DDR5	6TB DDR5
Storage	24+4 bays	8+2 bays	10 bays
Cooling	Liquid	Hybrid	Air
Best For	Hyperscale AI	Enterprise AI	Entry/Mid AI

Choosing the Right Server:

• Maximum Performance: XE8640 (8 GPUs, liquid cooling)
• Balanced Density: XE8545 (4 GPUs, hybrid cooling)
• Budget-Friendly: XE7745 (4 GPUs, air-cooled)