The R5715 pairs one AMD EPYC 9005 processor of 8 to 32 cores with 24 DDR5 slots across 12 memory channels, in a 2U chassis built for SAS/SATA drives. Set beside the R7715 in Dell’s own comparison, it drops GPUs, NVMe bays and the larger power supplies. This page maps exactly what Dell documents for it, and what that leaves you to work with.
1Left control panel: USB 2.0 Type-A and Mini DisplayPort (optional KVM)
212 × 3.5-inch SAS/SATA drive bays
3Right control panel: power button, USB-C iDRAC Direct port and status LED
4Express service tag (slide-out label)
Image: Dell Technologies
Form factor
2U Rack · 1 socket
Processors
AMD EPYC 9005
Memory
24 × DDR5 RDIMM · up to 1.5 TB
Drive bays
Up to 16 · 2 drive-bay layouts
Expansion
4 × PCIe · 2 × OCP 3.0
Boot
BOSS-N1 DC-MHS (rear)
Management
iDRAC10
01 — Overview
The R5715 at a glance
Our read of Dell’s documentation: where the R5715 is strong, and the limits worth knowing before you spec one.
Strengths
+Twelve DDR5 channels and 24 slots behind a processor of at most 32 cores — up to 1.5 TB, or 48 GB per core on the 9335.
+A short processor list built around clock speed: four EPYC 9005 parts from 8 to 32 cores, with base clocks of 3.0–3.65 GHz and maximum clocks up to 4.4 GHz.
+Conventional drive options — 12 × 3.5-inch or 16 × 2.5-inch SAS/SATA behind a front PERC H365i or H965i — with boot kept on a mirrored BOSS-N1 module at the rear.
+Two OCP 3.0 slots and a dedicated 1 GbE BMC port alongside up to four PCIe Gen5 slots.
+The lightest machine in Dell’s three-way comparison at 26.85 kg maximum, against 28.68 kg for the R7715 and 34.5 kg for the R7615.
Watch-outs
!No accelerators: Dell’s comparison table gives GPU support for the R5715 as N/A.
!No NVMe drive bays, no rear bays and no external RAID or HBA controllers.
!Only 16, 32 and 64 GB RDIMMs, so memory stops at 1.5 TB — and filling both DIMMs per channel drops 32 GB and 64 GB modules from 5200 to 4000 MT/s.
!CXL is not supported, and Dell states it has no plans to support it on this system.
!Power stops at 1100 W (1050 W on 100–120 V), with no 277 VAC or −48 V DC supply listed.
Processors4 SKUs
Cores / CPU8–32
DIMM slots24
Drive layouts2
Max bays16
PSU options4 · to 1,100 W
02 — Processors
4 supported processors, mapped
Four 5th Gen AMD EPYC 9005 processors are listed, all Zen 5 parts for the SP5 socket: 8, 16, 24 and 32 cores, with 64 MB or 128 MB of L3 cache. None goes beyond 32 cores, and base clocks run from 3.0 to 3.65 GHz. The chart places each one by core count against power.
Processor landscape — cores × TDP
4 SKUs · 1 family
AMD EPYC 9005 4Bubble size = L3 cache · hover a bubble for the full SKU
Processor explorer
filter · sort · compare
Processor
Cores / threads
Base
L3 cache
TDP
W / core
Memory
AMD EPYC 9335
32 / 64
3 GHz
128 MB
240 W
7.5
DDR5-6400
AMD EPYC 9255
24 / 48
3.25 GHz
128 MB
240 W
10.0
DDR5-6400
AMD EPYC 9135
16 / 32
3.65 GHz
64 MB
240 W
15.0
DDR5-6400
AMD EPYC 9015
8 / 16
3.6 GHz
64 MB
155 W
19.4
DDR5-6400
Dell’s processor table gives 240 W for the 9335, 9255 and 9135 and 155 W for the 9015. Its thermal table lists those figures as maximum cTDP, beside a cTDP column of 210, 200, 200 and 125 W.
Every processor is supported at 35°C with the 2U extended heat sink: Silver fans with the 16 × 2.5-inch front, HPR Gold fans with the 12 × 3.5-inch front.
The processor table shows 6400 MT/s memory support, but the platform runs DDR5 at no more than 5200 MT/s (see memory).
The BIOS offers NPS1 (the default), NPS2 and NPS4 NUMA modes; Dell warns that some processors cannot run NPS2 or NPS4.
03 — Memory
24 DDR5 DIMM slots
Twenty-four DDR5 RDIMM slots on 12 channels, two per channel, all serving the one processor. Only three module sizes are offered — 16, 32 and 64 GB — which caps the system at 1.5 TB. The decision that matters more is how many slots you fill, because a second DIMM in each channel costs speed.
Capacity with every slot filled
by DIMM size
Operating speed
per Dell memory tables
Processor
1 DIMM / channel
2 DIMMs / channel
16 GB RDIMM (single-rank)
5200 MT/s
4400 MT/s
32 GB and 64 GB RDIMM (dual-rank)
5200 MT/s
4000 MT/s
768 GB can be built two ways: 12 × 64 GB at 5200 MT/s, or 24 × 32 GB at 4000 MT/s.
The 1.5 TB maximum is 24 × 64 GB, running at 4000 MT/s.
All modules are 1.1 V parts rated for 6400 MT/s; the platform runs them at up to 5200 MT/s, and UDIMMs are not supported.
Dynamic post-package repair is available for non-Chipkill DIMMs; CXL is not supported on this system.
04 — Storage
2 drive-bay layouts, up to 16 bays
Two front layouts and nothing else: 12 × 3.5-inch or 16 × 2.5-inch, both SAS/SATA. There is no NVMe backplane and no rear bay, so the R5715 is built for disk and SAS/SATA-SSD workloads rather than all-NVMe designs.
Headline layouts
front panel view
Front panel
16 × 2.5" SAS/SATA at the front — 16 bays in total.
SAS/SATANVMeSAS/SATA + NVMe
Controllers & boot
PERC H965i — RAID, 8GB cache. Avenger 1 premium performance; 8 GB DDR4-3200; DC-MHS form factor; x16 PCIe 4.0; front PERC
PERC H365i — RAID. Avenger 1; x8 PCIe 4.0; no cache memory listed; front PERC
BOSS-N1 DC-MHS (rear) — boot
Controllers: a front PERC H965i (8 GB DDR4-3200 cache, PCIe 4.0 x16) or PERC H365i (PCIe 4.0 x8). There are no external controllers and no software RAID.
Dell’s drive tables cover 3.5-inch SATA and SAS disks up to 24 TB, 2.5-inch 10K SAS disks up to 2.4 TB, SATA SSDs, and SAS SSDs up to 7.68 TB.
Boot lives on a rear BOSS-N1 DC-MHS: a pair of 480 GB or 960 GB M.2 NVMe drives, in RAID 1 or RAID 0.
PowerEdge does not support SAS, SATA and NVMe drives behind the same controller.
Every documented layout
2 with drive bays
2.5-inch3.5-inchEDSFF (E1.S / E3.S)
05 — I/O & networking
PCIe and networking
I/O topology
128 lanes per CPU
One processor supplying up to 128 lanes of high-speed I/O feeds up to four PCIe Gen5 slots, two OCP 3.0 bays and the rear BOSS module. Dell documents just two riser configurations for the R5715.
Network adapters Dell lists
9 options
Adapter
Ports
Form
Broadcom 4 x 1GbE BT OCP 3.0
4 × 1GbE
OCP 3.0
Intel 4 x 1GbE BT OCP 3.0
4 × 1GbE
OCP 3.0
Intel 4 x 10GbE BT OCP 3.0
4 × 10GbE
OCP 3.0
Broadcom 2 x 10GbE BT OCP 3.0
2 × 10GbE
OCP 3.0
Broadcom 4 x 10GbE BT OCP 3.0
4 × 10GbE
OCP 3.0
Intel 2 x 10GbE BT OCP 3.0
2 × 10GbE
OCP 3.0
Broadcom 4 x 25GbE SFP28 OCP 3.0
4 × 25GbE
OCP 3.0
NVIDIA 2 x 25GbE SFP28 OCP 3.0
2 × 25GbE
OCP 3.0
Broadcom 2 x 25GbE BT OCP 3.0
2 × 25GbE
OCP 3.0
Both riser configurations are single-processor, front-PERC layouts with no rear storage.
Dell’s OCP table caps port speed at 25 GbE; its card list runs from 4 × 1 GbE BASE-T to 4 × 25 GbE SFP28.
NC-SI sideband for shared management works only on the embedded OCP slot, slot 10.
The EPYC 9005 processors bring PCIe link encryption and PCIe hot-plug port reconfiguration.
06 — Power & cooling
4 power supplies, 800–1,100 W
Two hot-plug 60 mm M-CRPS supplies, 1+1 redundant, chosen from a list of just four: 800 W and 1100 W, each in Platinum or Titanium. All four accept 100–240 V AC or 240 V DC and use C13 cords.
AC
At 100–120 V the 1100 W units deliver 1050 W; the 800 W units hold 800 W.
Dell lists the supplies for Fault Tolerant Redundancy, keeping the system running if one of them fails.
No 277 VAC or −48 V DC supply is listed for the R5715; the R7715 column of the same table offers both, with units up to 3200 W.
With two supplies of different wattage the larger is enabled and a mismatch warning is raised.
07 — Management, security & OS
Run it, secure it, choose the OS
Management
iDRAC10 (Core, Enterprise and Datacenter licences)
iDRAC Direct via the front USB Type-C port
iDRAC RESTful API with Redfish, RACADM CLI and IPMI
iDRAC Service Module
Zero-Touch Provisioning (iDRAC10 Enterprise)
Quick Sync 2 wireless module (optional left control panel)
OpenManage Enterprise with Power Manager, Services and Update Manager
Data at Rest Encryption (SEDs, local or external key management)
System Lockdown
Secure Erase
TPM 2.0 FIPS, CC-TCG certified
Chassis intrusion detection
Operating systems
Canonical Ubuntu Server LTS
Microsoft Windows Server with Hyper-V
Red Hat Enterprise Linux
SUSE Linux Enterprise Server
VMware ESXi
08 — Compare
R7615 → R5715
Dell’s R5715 guide compares it with the single-socket R7615 from the previous EPYC generation, and with its R7715 sibling. The R7615 column is shown here; the R7715 differences are covered in the FAQs. Every cell comes from that table.
Dell’s guide compares the R5715 with two machines: the R7715, which shares its single EPYC 9005 socket and 24 DIMM slots but adds GPUs and processors up to 160 cores, and the previous-generation R7615. Alongside them sit the 1U single-socket R6715, the two-socket R7725 and the Intel-based R570. The bars compare what each document allows.
This modelSiblings and successorEach value from that model’s own verified spec file · bars scale per column
Four builds matched to the workloads Dell names for the R5715 — virtualisation, VDI, video surveillance — plus a branch-office server. Each uses only parts this model’s configurator allows and opens there ready to change.
Virtualisation
1.5 TB behind 32 cores
Filling all 24 slots with 64 GB modules reaches the R5715’s 1.5 TB ceiling — 48 GB per core on the 32-core 9335. Twelve SAS SSDs on the cached H965i hold the datastore, and four 25GbE ports carry VM and storage traffic.
1 × AMD EPYC 9335 — 32 cores @ 3 GHz, 240 W
24 × 64 GB DDR5 RDIMM — 1.5 TB at two per channel (4000 MT/s)
12 × 3.84 TB SAS SSD — 46.08 TB raw, four bays free
Dell lists VDI and medium VM density among this server’s target workloads. Twelve 64 GB modules, one per channel, give 768 GB at 5200 MT/s — the capacity that 24 × 32 GB would reach only at 4000 MT/s — and leave the second slot in every channel free for later growth.
1 × AMD EPYC 9255 — 24 cores @ 3.25 GHz, 240 W
12 × 64 GB DDR5 RDIMM — 768 GB at 5200 MT/s
8 × 1.92 TB SATA SSD — 15.36 TB raw
PERC H365i front controller
BOSS-N1 DC-MHS mirrored boot
2 × 25GbE SFP28 OCP 3.0
2 × 1100 W Platinum (1+1)
Windows Server 2025 Datacenter
Adding a second DIMM to each channel later lowers memory speed to 4000 MT/s for 32 GB and 64 GB modules.
Retail video surveillance is one of the workloads Dell names for the R5715. Twelve 20 TB SATA disks give 240 TB raw behind the cached PERC H965i, and a four-port 10GbE BASE-T OCP card separates camera and client networks.
1 × AMD EPYC 9135 — 16 cores @ 3.65 GHz, 240 W
12 × 20 TB 3.5" SATA 7.2K — 240 TB raw
PERC H965i front controller (8 GB cache)
12 × 32 GB DDR5 RDIMM — 384 GB at 5200 MT/s
BOSS-N1 DC-MHS mirrored boot
Broadcom 4 × 10GbE BASE-T OCP 3.0
2 × 1100 W Titanium (1+1)
Windows Server 2025
With the 12 × 3.5-inch front Dell specifies HPR Gold fans for every processor.
At 155 W, the 8-core EPYC 9015 is the lowest-power processor on the list. With 192 GB of memory at full speed and 10K SAS disks behind a PERC H365i, it handles file, print and line-of-business roles and keeps half the front bays for growth.
If the R5715’s 32-core ceiling and SAS/SATA storage already describe the job, an earlier-generation server may do it for less. These re-certified PowerEdge models are the nearest matches — two of them AMD EPYC machines.
14G · re-certified
PowerEdge R7425
2U · 2 × AMD EPYC 7001
Up to 64 cores
32 DIMM slots · up to 4 TB DDR4
24 × 2.5" or 12 × 3.5" · iDRAC9
AMD in 2U with more memory slots than the R5715 and GPU capacity it lacks, for virtualisation and analytics.
Up to 26.85 kg (12 × 3.5") · 26.81 kg (16 × 2.5"), with all drives
Cooling
Air only · up to six hot-plug fans, HPR Silver or HPR Gold · N+1 fan redundancy
Heat sink
2U extended
Bezel
Optional metal bezel
Rails
B21 ReadyRails sliding · B22 Stab-in/Drop-in sliding · B20 static (required for 2-post) · optional CMA or SRB
Processor
Sockets
One (SP5)
Family
5th Gen AMD EPYC 9005 (Zen 5)
Cores
8, 16, 24 or 32
TDP
155 W (9015) or 240 W · listed as maximum cTDP
L3 cache
64 MB or 128 MB
I/O
Up to 128 lanes
Memory
Slots
24 DDR5 RDIMM · 12 channels × 2 DIMMs
DIMM sizes
16, 32 and 64 GB
Speed
5200 MT/s at 1 DPC · 4400 MT/s (16 GB) or 4000 MT/s (32/64 GB) at 2 DPC
Maximum
1.5 TB (24 × 64 GB)
CXL
Not supported
Storage
Front
12 × 3.5" SAS/SATA or 16 × 2.5" SAS/SATA
Rear
None
Drive types
3.5" SATA / SAS HDD to 24 TB · 2.5" 10K SAS HDD to 2.4 TB · SATA SSD · SAS SSD to 7.68 TB
Controllers
Front PERC H965i (8 GB) or H365i · no external controllers · no software RAID
Boot
Rear BOSS-N1 DC-MHS · 2 × M.2 NVMe, 480 or 960 GB · RAID 1 or 0
Expansion & networking
PCIe
Up to 4 × Gen5 slots with x16 lanes · riser configurations 2 and 3
OCP
Up to 2 × OCP NIC 3.0 · SFF, Gen5, up to x16 · 1, 10 and 25 GbE cards
Management port
1 GbE dedicated BMC port on the DC-SCM
Power
Supplies
Two hot-plug 60 mm M-CRPS · 1+1 redundant · Fault Tolerant Redundancy
Options
800 W Platinum or Titanium · 1100 W Platinum or Titanium
Input
100–240 V AC or 240 V DC · C13 cord
Ports & video
Front
USB 2.0 Type-C (host / BMC direct) · optional USB 2.0 Type-A and Mini-DisplayPort (KVM)
Rear
1 GbE dedicated BMC Ethernet · 2 × USB 3.1 · VGA
Internal
1 × USB 3.1 (optional)
Video
Integrated Matrox G200, 16 MB
Environment & acoustics
Operating ranges
ASHRAE A2 10–35°C · A3 5–40°C · A4 5–45°C · rugged 5–55°C (at up to 900 m)
Maximum operating altitude
3048 m
Sound power
Quietest tested build 6.0 B idle (25°C)
12 — FAQ
R5715 questions, answered from the documentation
What is the maximum memory of the Dell PowerEdge R5715?
The R5715 has 24 DDR5 RDIMM slots and takes 16, 32 or 64 GB modules, so the maximum is 1.5 TB (24 × 64 GB). With every slot filled the memory runs at 4000 MT/s; filling one slot per channel keeps 5200 MT/s, which with 64 GB modules gives 768 GB.
Which processors does the R5715 support?
Four 5th Gen AMD EPYC 9005 models: the 8-core 9015, 16-core 9135, 24-core 9255 and 32-core 9335. Dell’s processor table rates the 9015 at 155 W and the others at 240 W; its thermal table shows those as maximum cTDP, beside cTDP values of 125, 200, 200 and 210 W.
How many drive bays does the R5715 have, and does it support NVMe?
Either 12 × 3.5-inch or 16 × 2.5-inch SAS/SATA bays at the front, and none at the rear. Dell lists no NVMe backplane, so NVMe appears only as the two M.2 boot drives on the BOSS-N1 module.
Can the R5715 take GPUs?
No. Dell’s comparison table gives the R5715’s accelerator support as N/A. For GPUs with a single EPYC 9005 socket in 2U, the R7715 in the same table takes up to three 400 W double-wide or six 75 W single-wide cards.
What PCIe and networking does the R5715 have?
Up to four PCIe Gen5 slots with x16 lanes, depending on riser configuration 2 or 3, fed by up to 128 lanes of I/O from the processor. Networking comes from up to two OCP NIC 3.0 cards — 1, 10 or 25 GbE in Dell’s list — plus a dedicated 1 GbE BMC port.
Which power supplies does the R5715 use?
A redundant pair chosen from four hot-plug 60 mm units: 800 W or 1100 W, each in Platinum or Titanium. All run on 100–240 V AC or 240 V DC, and at 100–120 V the 1100 W units give 1050 W. Dell lists no 277 V or −48 V option for this model.
How big and heavy is the PowerEdge R5715?
It is 86.8 mm high and 482 mm wide, and 802.4 mm deep measured to the PSU handle. Fully loaded it weighs up to 26.85 kg with twelve 3.5-inch drives or 26.81 kg with sixteen 2.5-inch drives. An optional metal bezel is available.
How does the R5715 differ from the R7715?
Both are 2U servers with one EPYC 9005 socket and 24 DDR5 slots at up to 5200 MT/s. The R7715 adds processors up to 160 cores, GPUs, NVMe and E3.S layouts up to 40 bays, external controllers, supplies up to 3200 W, eight Gen5 slots and a liquid-cooling option; the R5715 keeps four processors up to 32 cores, SAS/SATA bays and 800–1100 W supplies.
How does the R5715 compare with the previous-generation R7615?
The R7615 took one 4th Gen EPYC of up to 128 cores with 12 DIMM slots at 4800 MT/s, plus GPU support and NVMe and rear-bay options. The R5715 has twice the DIMM slots (24) and faster memory (5200 MT/s), but caps cores at 32 and drops GPUs, NVMe and rear bays. Its maximum weight falls from 34.5 kg to 26.85 kg.
Is the Dell PowerEdge R5715 end of life?
Dell’s R5715 guide (Rev. A02, May 2026) contains no end-of-sale or end-of-support date. According to its services appendix, Dell’s base hardware warranty lasts one or three years by model, and ProSupport contracts lengthen it. Dates will appear in our end-of-life checker as Dell releases them.
Specifications are extracted from Dell’s published documents and independently re-checked line by line. Configurations are quote-based; availability and exact options are confirmed at quotation. Last reviewed 2026-09-11.
