Xeon D-2123IT vs Xeon E5-2623 v3

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Xeon D-2123IT vs Xeon E5-2623 v3 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Xeon D-2123IT vs Xeon E5-2623 v3: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Xeon D-2123IT

2018

Why buy it

✅+0.6% higher PassMark.
✅Draws 60W instead of 105W, a 45W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-2623 v3 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (8.3 MB vs 10 MB).

Xeon E5-2623 v3

2014

Why buy it

✅Better for gaming: +9.0% higher average FPS across 50 shared CPU benchmark tests.
✅+21.2% larger total L3 cache (10 MB vs 8.3 MB).
✅100+% more PCIe lanes (40 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (6,652 vs 6,689).
❌Launch MSRP is still $444 MSRP, while Xeon D-2123IT mostly shows up through inconsistent older-market listings.
❌75% higher power demand at 105W vs 60W.

Quick Answers

So, is Xeon D-2123IT better than Xeon E5-2623 v3?

It depends on what you want from the system. For gaming, Xeon E5-2623 v3 is ahead with a 9.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon D-2123IT pulls ahead with 0.6% better PassMark. Xeon E5-2623 v3 also has the bigger cache pool with 21.2% larger total L3 cache (10 MB vs 8.3 MB).

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon D-2123IT is the stronger fit. You are getting 0.6% better PassMark, backed by 4 cores and 8 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Xeon D-2123IT is still the faster CPU overall, but Xeon E5-2623 v3 is easier to justify if budget matters more than peak performance. Xeon D-2123IT comes in at an unclear MSRP at unclear MSRP versus $444 MSRP, and it still gives you 0.6% better PassMark. The compromise is that Xeon E5-2623 v3 is still the better pure gaming CPU with a 9.0% average FPS lead across 50 shared CPU game tests in our data. Xeon E5-2623 v3 is also 100.0% better value on MSRP (15.0 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

Which one is more future-proof for 2026 and beyond?

Xeon D-2123IT makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2014) and more multi-core headroom with 4 cores / 8 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon D-2123IT vs Xeon E5-2623 v3 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Xeon D-2123IT

The Xeon D-2123IT is manufactured by Intel. It was released in 7 February 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 4 cores and 8 threads. Base frequency is 2.2 GHz, with boost up to 3 GHz. L3 cache: 8.25 MB. L2 cache: 4 MB. Built on 14 nm process technology. Socket: FCBGA2518. Thermal design power (TDP): 60 Watt. Memory support: DDR4. Passmark benchmark score: 6,689 points. Launch price was $213.

Xeon E5-2623 v3

The Xeon E5-2623 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 4 cores and 8 threads. Base frequency is 3 GHz, with boost up to 3.5 GHz. L3 cache: 10 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 105 Watt. Memory support: DDR4-1600, DDR4-1866. Passmark benchmark score: 6,652 points. Launch price was $800.

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Processing Power

Both the Xeon D-2123IT and Xeon E5-2623 v3 share an identical 4-core/8-thread configuration. Boost clocks reach 3 GHz on the Xeon D-2123IT versus 3.5 GHz on the Xeon E5-2623 v3 — a 15.4% clock advantage for the Xeon E5-2623 v3 (base: 2.2 GHz vs 3 GHz). The Xeon D-2123IT uses the Skylake (server) (2017−2018) architecture (14 nm), while the Xeon E5-2623 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Xeon D-2123IT scores 6,689 against the Xeon E5-2623 v3's 6,652 — a 0.6% lead for the Xeon D-2123IT. L3 cache: 8.25 MB on the Xeon D-2123IT vs 10 MB (total) on the Xeon E5-2623 v3.

Feature	Xeon D-2123IT	Xeon E5-2623 v3
Cores / Threads	4 / 8	4 / 8
Boost Clock	3 GHz	3.5 GHz+17%
Base Clock	2.2 GHz	3 GHz+36%
L3 Cache	8.25 MB	10 MB (total)+21%
L2 Cache	4 MB	256K (per core)+6300%
Process	14 nm-36%	22 nm
Architecture	Skylake (server) (2017−2018)	Haswell-EP (2014−2015)
PassMark	6,689	6,652
Geekbench 6 Single	—	899
Geekbench 6 Multi	—	3,683

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Memory & Platform

The Xeon D-2123IT uses the FCBGA2518 socket (PCIe 3.0), while the Xeon E5-2623 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Xeon D-2123IT	Xeon E5-2623 v3
Socket	FCBGA2518	LGA2011
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	—	DDR4-1866
Max RAM Capacity	—	768 GB
RAM Channels	—	4
ECC Support	—	Yes
PCIe Lanes	—	40