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Dell PowerEdge R7525
What Is the Dell PowerEdge R7525?
Two SP3 sockets accept EPYC 7002 (Rome) or 7003 (Milan) processors up to 64 cores and 280 W each — 128 cores in an air-cooled 2U. Its 32 DDR4-3200 slots scale to 2 TB with RDIMMs or 4 TB with LRDIMMs, keeping dense VM footprints and vSAN cache tiers on DRAM rather than disk.
The defining trait is how the maximums coexist: a 24-bay all-NVMe wall, eight Gen4 slots, three double-width GPU positions and 2800 W Titanium in one chassis — for buyers who have outgrown 1U slots but do not need DDR5/Gen5.
Condition: factory-sealed New Old Stock — new, unopened and never energized. Read what New Old Stock means and our 3-year warranty terms.
The Most Expandable 15G AMD Platform: When 2U Flexibility Wins
“Most expandable” is easy to print and harder to engineer. On the R7525 it means four subsystems max out together: a 24-bay 2.5 in. backplane fully populated with Gen4 NVMe; the riser cage still exposing up to eight Gen4 slots; three positions taking 300 W double-width accelerators; and 2800 W Titanium supplies keeping two 280 W CPUs, three accelerators and a full flash wall inside a redundant envelope.
- All-flash SDS and hypervisors — a 24-NVMe vSAN or Ceph node with dual 25/100 GbE adapters.
- GPU plus capacity together — inference, VDI or GPU databases on double-width cards with local capacity alongside.
- Multi-NIC edge and network functions — eight Gen4 slots for NICs, DPUs and accelerators in NFV roles.
It earns its place when slots, drives and accelerators are all pushed at once — where 1U nodes sprawl into adapters, cables and separate shelves.
R7525 Specifications at a Glance
| Form factor | 2U rack, dual socket (2 CPUs) |
|---|---|
| Processors | 2 × AMD EPYC 7002 (Rome) / 7003 (Milan), up to 64 cores per socket; up to 280 W |
| Memory | 32 × DDR4-3200, RDIMM up to 2 TB / LRDIMM up to 4 TB |
| Front bays | 8/12 × 3.5″ or 16/24 × 2.5″ |
| Rear bays | None |
| Maximum NVMe | Up to 24 × front NVMe |
| GPU support | Up to 3 × 300 W double-width or 6 × 75 W single-width |
| PCIe / networking | Up to 8 × PCIe Gen4 slots |
| RAID controllers | PERC H345 / H745 / H755 / H755N, HBA345 / HBA355, H840, S150 |
| Power supplies | 800/1400/2400 W Platinum, 1100 W DC, 700/1100/1800/2800 W Titanium |
Figures follow Dell’s official R7525 technical documentation; systems are built to order, so a chassis ships with the options you select. Source: Dell PowerEdge R7525 technical guide.
Building One Chassis for Compute, NVMe and Double-Width GPUs
Power, cooling and riser realities for 300 W cards
Three 300 W double-width accelerators is the ceiling, but it is a configuration exercise: GPU-rated risers are required, both CPUs must be populated because Gen4 lanes are sourced per socket, and the power shelf is not optional. Three 300 W cards with 240–280 W EPYC parts means 2400 W Platinum at minimum, 2800 W Titanium for full redundant margin; otherwise six 75 W single-width cards fit. Baffles and fan profiles must match the riser set — a mismatch is the common thermal-throttling cause in self-integrated builds.
12 × 3.5 in. capacity versus a 24 × 2.5 in. flash wall
The 12-bay 3.5 in. backplane is the capacity choice for nearline storage and backup targets; the 24-bay 2.5 in. wall is the performance choice, fully NVMe-capable. There are no rear bays, so boot and data both live at the front — making the controller the one decision to get right.
Picking the controller: H755, H755N, HBA or H840
The tri-mode PERC H755 covers mixed SAS/SATA/NVMe trays on one card; the H755N targets front NVMe plus NVMe boot. HBA345/HBA355 run IT mode for raw passthrough to ZFS, Ceph or vSAN; the H840 reaches external JBOD shelves; the S150 is the entry software SATA option. Power follows the build — 800/1400 W mainstream, 2400 W Platinum for GPUs, 2800 W Titanium for triple 300 W cards with dual high-TDP CPUs and twenty-four flash trays.
R7525 vs R6525, R7515 and the 16G R7625
These share EPYC DNA; the differences are floor plan and generation:
- R6525 — the same Rome/Milan generation in 1U, with fewer bays, when rack units are the constraint.
- R7515 — single socket, up to 64 cores; per-socket licensing can make it the cheaper platform when one CPU suffices. See our single-socket EPYC guide.
- R7625 — the 16G successor on EPYC 9004 (Genoa) with DDR5 and PCIe Gen5.
- R6625 — 16G dual-socket performance in 1U for clusters that do not need 2U bays.
One socket in 1U is the R6515; the 17G R7725 is today’s dual-socket 2U flagship. See the full AMD EPYC model directory.
Condition, Testing and Warranty
Our R7525 inventory is factory-sealed New Old Stock: original packaging with the seal intact, zero power-on hours and no deployment history. NOS excludes returns, open-box or deinstalled hardware — cartons come from channel stock and are marked NOS on quote and packing documents; the NOS explainer covers how we source and label it.
Bare-bones units can ship still sealed. For configured builds, engineers populate your exact CPUs, DIMMs and drives; baseline BIOS and iDRAC; stress-test CPU, memory and storage; and verify backplane, riser and PSU against the bill of materials. Each server ships with an inspection report and three years of direct coverage — terms on the warranty page.
Real R7525 Units in Our Warehouse
Shot in our own warehouse — actual R7525 units, not catalog artwork. Your build is photographed before palletized export.
Batch Orders, Configuration and Export
Multi-unit programs are routine: identical CPU steppings, matched DIMM layouts, same-batch drives and a standardized iDRAC/BIOS baseline, palletized with export documentation. Send core, memory, storage and networking targets with quantity, destination port and incoterm; we reply within one business day with a build sheet, firm channel pricing and lead time.
Why Buy from Us?
- Quoted against an exact bill of materials — CPU SKU and stepping, DIMM map, controller, backplane and PSU confirmed before invoicing.
- Sealed stock with real coverage — factory-sealed NOS backed by a written 3-year warranty and an in-house RMA desk, not a short marketplace return window.
- Inventory you can inspect — warehouse photographs, serial-number records and a per-unit inspection report with every build.
- Cluster-ready, export-experienced — matched revisions, pallet packing and documentation for Europe, Southeast Asia, the Middle East, the CIS and Latin America.
- Engineering-led and brand-independent — Dell PowerEdge and other tier-one server lines configured around your workload from one B2B desk.
Frequently Asked Questions
What is the Dell PowerEdge R7525?
Dell’s 15th-generation 2U dual-socket server for EPYC 7002 (Rome) and 7003 (Milan), up to 64 cores per socket. It is the most expandable 15G EPYC model — 32 DDR4 slots, 4 TB memory, eight Gen4 slots, 24 front NVMe and three double-width GPUs.
What does factory-sealed New Old Stock mean?
A new, unopened server in its original factory packaging with the seal intact — never powered on, zero power-on hours. We source it as channel stock, mark it clearly as NOS and cover it with a 3-year warranty. See the NOS page.
How many double-width GPUs and NVMe drives fit?
Up to three 300 W double-width accelerators, or six 75 W single-width cards, and up to 24 front NVMe drives with no rear bays. The three-GPU ceiling needs GPU risers, both CPUs and 2400 W Platinum or 2800 W Titanium supplies.
R7525, R6525, R7515, R7625 or R6625 — how do I choose?
R6525/R6625 when 1U density matters most; R7515 when one socket suffices and per-socket licensing matters; R7625 when DDR5 and Gen5 justify a current platform; R7525 for the widest 15G mix of DIMMs, slots, NVMe and double-width GPUs in 2U.
What testing and warranty come with the R7525?
Configured builds are assembled from sealed stock, firmware-baselined and stress-tested across CPU, memory and storage, with backplane, riser and PSU checked plus an inspection report. Coverage runs three years directly from us; see the warranty page.
Can you deliver matched R7525 units for a cluster?
Yes. Batch orders receive identical CPU steppings, matched DIMM layouts, same-batch drives and standardized firmware, palletized with export documentation so every node arrives ready to rack.
What is the lead time and how do I order?
Lead time varies with CPU SKU, memory, drives and quantity. Send configuration, quantity, destination and incoterm through the contact page; we reply within one business day with a build sheet, firm pricing and a delivery date.
Prefer email? Write to info@sell-server.com or message WhatsApp +86 18001060290; we answer within one business day.
AMD, EPYC, Rome, Milan and Genoa are trademarks of Advanced Micro Devices, Inc.; Dell and PowerEdge are trademarks of Dell Inc. Trademarks appear solely for identification. Servers are sold and warranted by Beijing Xinchuan Technology Co., Ltd. This page was last reviewed on 2026-09-19.
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