Xeon E-2126G vs Xeon E5-4620 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 E-2126G vs Xeon E5-4620 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 E-2126G vs Xeon E5-4620 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 E-2126G

2018

Why buy it

✅Draws 80W instead of 105W, a 25W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-4620 v3 across 50 shared CPU benchmark tests.
❌Lower PassMark (10,437 vs 10,525).
❌Smaller total L3 cache (12 MB vs 25 MB).
❌Launch MSRP is still $2,702 MSRP, while Xeon E5-4620 v3 mostly shows up through inconsistent older-market listings.

Xeon E5-4620 v3

2015

Why buy it

✅Better for gaming: +20.4% higher average FPS across 50 shared CPU benchmark tests.
✅+108.3% larger total L3 cache (25 MB vs 12 MB).

Trade-offs

❌31.3% higher power demand at 105W vs 80W.

Quick Answers

So, is Xeon E5-4620 v3 better than Xeon E-2126G?

Yes. Xeon E5-4620 v3 is the better all-around CPU here. It gives you a 20.4% average FPS lead across 50 shared CPU game tests in our data and 0.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon E5-4620 v3 is the better pick. According to our tests, it delivers 20.4% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Xeon E5-4620 v3 is the stronger fit. You are getting 0.8% better PassMark, backed by 10 cores and 20 threads. It also has the larger cache pool with 108.3% larger total L3 cache (25 MB vs 12 MB).

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

Xeon E5-4620 v3 is still the faster CPU overall, but Xeon E-2126G is easier to justify if budget matters more than peak performance. Xeon E5-4620 v3 comes in at an unclear MSRP at unclear MSRP versus $2,702 MSRP, and it still gives you a 20.4% average FPS lead across 50 shared CPU game tests in our data. Xeon E-2126G is also 100.0% better value on MSRP (3.9 vs 0.0 PassMark/$), 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 E-2126G makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2015). That makes it the safer long-term bet.

Xeon E-2126G vs Xeon E5-4620 v3 Technical Specifications

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

Xeon E-2126G

The Xeon E-2126G is manufactured by Intel. It was released in 12 July 2018 (7 years ago). It is based on the Coffee Lake-S WS (2018−2019) architecture. It features 6 cores and 6 threads. Base frequency is 3.3 GHz, with boost up to 4.5 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 80 Watt. Memory support: DDR4-2666. Passmark benchmark score: 10,437 points. Launch price was $255.

Xeon E5-4620 v3

The Xeon E5-4620 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 10 cores and 20 threads. Base frequency is 2 GHz, with boost up to 2.6 GHz. L3 cache: 25 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 10,525 points. Launch price was $800.

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Processing Power

The Xeon E-2126G packs 6 cores / 6 threads, while the Xeon E5-4620 v3 offers 10 cores / 20 threads — the Xeon E5-4620 v3 has 4 more cores. Boost clocks reach 4.5 GHz on the Xeon E-2126G versus 2.6 GHz on the Xeon E5-4620 v3 — a 53.5% clock advantage for the Xeon E-2126G (base: 3.3 GHz vs 2 GHz). The Xeon E-2126G uses the Coffee Lake-S WS (2018−2019) architecture (14 nm), while the Xeon E5-4620 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Xeon E-2126G scores 10,437 against the Xeon E5-4620 v3's 10,525 — a 0.8% lead for the Xeon E5-4620 v3. L3 cache: 12 MB (total) on the Xeon E-2126G vs 25 MB (total) on the Xeon E5-4620 v3.

Feature	Xeon E-2126G	Xeon E5-4620 v3
Cores / Threads	6 / 6	10 / 20+67%
Boost Clock	4.5 GHz+73%	2.6 GHz
Base Clock	3.3 GHz+65%	2 GHz
L3 Cache	12 MB (total)	25 MB (total)+108%
L2 Cache	256 kB (per core)	256K (per core)
Process	14 nm-36%	22 nm
Architecture	Coffee Lake-S WS (2018−2019)	Haswell-EP (2014−2015)
PassMark	10,437	10,525

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Memory & Platform

The Xeon E-2126G uses the LGA1151 socket (PCIe 3.0), while the Xeon E5-4620 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.