Intel SR2LL Xeon E3-1245v5 3.5GHz CPU (Renewed)

Name: Intel SR2LL Xeon E3-1245v5 3.5GHz CPU (Renewed)
Brand: Intel
SKU: SR2LL

Overview

The Intel Xeon E3-1245v5 is a Skylake-generation quad-core workstation processor operating at a 3.5GHz base with 3.9GHz single-core Turbo Boost, backed by 8MB of L3 cache and an 80W TDP. The v5 designation places it on the LGA1151 socket with DDR4 memory support — but unlike consumer Skylake chips, this CPU supports ECC (Error-Correcting Code) memory when paired with a compatible C232 or C236 chipset motherboard. That ECC support is not a marketing distinction; it means the processor can detect and correct single-bit memory errors in real time, preventing the silent data corruption that accumulates in long-running computation, database, or file-server workloads. The 8 logical threads via Hyper-Threading put it ahead of similarly-clocked quad-core consumer CPUs in any workload that scales past four threads.

The renewed E3-1245v5 is purpose-built for builders who need workstation-class capability on a constrained budget — home lab virtualization hosts, small business file servers, CAD workstations, and any build where ECC memory or vPro manageability is required but new Xeon pricing is prohibitive. The integrated HD Graphics P530 handles display output capably, eliminating the need for a discrete GPU in headless or lightly graphical roles. This CPU does not belong in a gaming build or any workflow demanding single-core frequency above 4GHz — but for reliable, threaded, ECC-protected compute at Skylake efficiency, it remains a competitive option in its renewed price bracket. Confirm chipset compatibility before purchase; that single step determines whether this is the right CPU for your build.

Key Features

Please contact us before purchase to confirm this will work with your Motherboard

CPU only - Heatsink, Fan, and thermal paste not included

Total Cores 4

Total Threads 8

Processor Base Frequency 3.50 GHz

Max Turbo Frequency 3.90 GHz

Sockets Supported LGA1151 (Motherboard must support Xeon)

Intel Virtualization Technology (VT-x) Yes

Processor Graphics Intel HD Graphics P530

DirectX Support 12

Specifications

Processor

Intel Xeon E3-1245v5

Cores / Threads

4 cores / 8 threads

Base Frequency

3.50 GHz

Max Turbo Frequency

3.90 GHz

Cache

8MB L3

TDP

80W

Socket

LGA1151 (Xeon-compatible chipset required)

Virtualization

Intel VT-x (Yes)

Integrated Graphics

Intel HD Graphics P530

DirectX Support

12

Condition

Renewed

Similar Products

Other products from the same family that visitors often consider:

✓ Available

Pros & Cons

👍 Pros

3.5GHz base / 3.9GHz Turbo on four physical cores delivers consistent single-threaded performance for latency-sensitive workloads that don't scale across many cores.
Hyper-Threading provides 8 logical threads from 4 cores, offering meaningful throughput gains in compilation, encoding, and multi-VM environments without a multi-socket investment.
ECC memory support eliminates silent data corruption — a non-negotiable capability for database servers, scientific workloads, and any environment where memory integrity matters.
Intel VT-x and VT-d support enables full hardware-assisted virtualization with PCIe passthrough, a combination unavailable on any consumer LGA1151 CPU.
Renewed pricing delivers Skylake Xeon capability at a fraction of the cost of equivalent new server silicon, extending the useful life of C232/C236 platforms.

👎 Cons

Requires a C232 or C236 chipset motherboard — incompatible with consumer Z170/H170 boards, significantly narrowing compatible platform options and increasing total build cost.
No heatsink or thermal paste included; the 80W TDP requires a separately purchased LGA1151 cooler before the system can POST.
Skylake microarchitecture (2015) means no AVX-512, no PCIe 4.0 support, and limited memory bandwidth by current workstation standards.
As a renewed unit, no assurance of remaining warranty term from Intel — useful life is bounded by prior usage hours, which are unverifiable.
Turbo Boost ceiling of 3.9GHz leaves single-core performance meaningfully below current-generation Xeon alternatives in frequency-sensitive tasks.

Frequently Asked Questions

What motherboards are compatible with the Xeon E3-1245v5?

The E3-1245v5 uses the LGA1151 socket, but Xeon E3 v5 CPUs require a Xeon-compatible chipset — specifically C232 or C236. Consumer Z170 or H170 boards will not POST with this CPU. Confirm your motherboard's chipset and BIOS support for Xeon before purchasing.

What performance bottleneck does this CPU solve compared to a Core i5-6xxx?

The E3-1245v5 adds Hyper-Threading (8 threads vs. 4) and ECC memory support. In heavily threaded workloads — compilation, rendering, virtual machines — the extra threads meaningfully reduce completion time. ECC solves silent data corruption risk entirely, which no Core i5 at any price can address.

Does the renewed unit include a heatsink or thermal paste?

No. The listing is CPU only — no heatsink, fan, or thermal paste is included. Budget for a compatible LGA1151 cooler rated for at least 80W TDP before installation.

What does Intel VT-x support mean for virtualization workloads?

VT-x enables hardware-assisted virtualization, allowing hypervisors (VMware, Hyper-V, KVM) to run virtual machines with near-native performance. The E3-1245v5 supports both VT-x and VT-d (I/O virtualization), making it suitable for running multiple VMs with PCIe passthrough.

Is the integrated Intel HD Graphics P530 usable as a display output?

Yes — the P530 is a workstation-class variant of Intel's Gen 9 graphics, supporting DirectX 12 and capable of driving up to three displays. It is not a gaming or GPU-compute engine, but it eliminates the need for a discrete GPU in headless or lightly graphical workstation builds.