Xeon E5-2643 v3 vs Xeon Silver 4109T

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 E5-2643 v3 vs Xeon Silver 4109T 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 E5-2643 v3 vs Xeon Silver 4109T: Pros, Cons & Final Verdict

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

Xeon E5-2643 v3

2014

Why buy it

✅Better for gaming: +6.1% higher average FPS across 50 shared CPU benchmark tests.
✅+81.8% larger total L3 cache (20 MB vs 11 MB).

Trade-offs

❌Lower PassMark (10,265 vs 10,348).
❌Launch MSRP is still $219 MSRP, while Xeon Silver 4109T mostly shows up through inconsistent older-market listings.
❌92.9% higher power demand at 135W vs 70W.

Xeon Silver 4109T

2017

Why buy it

✅+0.8% higher PassMark.
✅Draws 70W instead of 135W, a 65W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-2643 v3 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (11 MB vs 20 MB).

Quick Answers

So, is Xeon Silver 4109T better than Xeon E5-2643 v3?

It depends on what you want from the system. For gaming, Xeon E5-2643 v3 is ahead with a 6.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon Silver 4109T pulls ahead with 0.8% better PassMark. Xeon E5-2643 v3 also has the bigger cache pool with 81.8% larger total L3 cache (20 MB vs 11 MB).

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

For streaming, content creation, and heavier multitasking, Xeon Silver 4109T is the stronger fit. You are getting 0.8% better PassMark, backed by 8 cores and 16 threads.

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

Xeon Silver 4109T is still the faster CPU overall, but Xeon E5-2643 v3 is easier to justify if budget matters more than peak performance. Xeon Silver 4109T comes in at an unclear MSRP at unclear MSRP versus $219 MSRP, and it still gives you 0.8% better PassMark. The compromise is that Xeon E5-2643 v3 is still the better pure gaming CPU with a 6.1% average FPS lead across 50 shared CPU game tests in our data. Xeon E5-2643 v3 is also 100.0% better value on MSRP (46.9 vs 0.0 PassMark/$), 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 Silver 4109T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2014) and more multi-core headroom with 8 cores / 16 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon E5-2643 v3 vs Xeon Silver 4109T Technical Specifications

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

Xeon E5-2643 v3

The Xeon E5-2643 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 6 cores and 12 threads. Base frequency is 3.4 GHz, with boost up to 3.7 GHz. L3 cache: 20 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 135 Watt. Memory support: DDR4-1600, DDR4-1866, DDR4-2133. Passmark benchmark score: 10,265 points. Launch price was $800.

Xeon Silver 4109T

The Xeon Silver 4109T is manufactured by Intel. It was released in 11 July 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 2 GHz, with boost up to 3 GHz. L3 cache: 11 MB. L2 cache: 8 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 70 Watt. Memory support: DDR4-2400. Passmark benchmark score: 10,348 points. Launch price was $501.

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Processing Power

The Xeon E5-2643 v3 packs 6 cores / 12 threads, while the Xeon Silver 4109T offers 8 cores / 16 threads — the Xeon Silver 4109T has 2 more cores. Boost clocks reach 3.7 GHz on the Xeon E5-2643 v3 versus 3 GHz on the Xeon Silver 4109T — a 20.9% clock advantage for the Xeon E5-2643 v3 (base: 3.4 GHz vs 2 GHz). The Xeon E5-2643 v3 uses the Haswell-EP (2014−2015) architecture (22 nm), while the Xeon Silver 4109T uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Xeon E5-2643 v3 scores 10,265 against the Xeon Silver 4109T's 10,348 — a 0.8% lead for the Xeon Silver 4109T. L3 cache: 20 MB (total) on the Xeon E5-2643 v3 vs 11 MB on the Xeon Silver 4109T.

Feature	Xeon E5-2643 v3	Xeon Silver 4109T
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	3.7 GHz+23%	3 GHz
Base Clock	3.4 GHz+70%	2 GHz
L3 Cache	20 MB (total)+82%	11 MB
L2 Cache	256K (per core)+3100%	8 MB
Process	22 nm	14 nm-36%
Architecture	Haswell-EP (2014−2015)	Skylake (server) (2017−2018)
PassMark	10,265	10,348

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Memory & Platform

The Xeon E5-2643 v3 uses the LGA2011 socket (PCIe 5.0), while the Xeon Silver 4109T uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.