Xeon E5-1603 v3 vs Xeon E5-2609 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 E5-1603 v3 vs Xeon E5-2609 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 E5-1603 v3 vs Xeon E5-2609 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 E5-1603 v3

2014

Why buy it

✅Costs $33 less on MSRP ($273 MSRP vs $306 MSRP).
✅Delivers 12.0% more PassMark for each dollar spent, at 16.3 vs 14.6 PassMark/$ ($273 MSRP vs $306 MSRP).

Trade-offs

❌Lower PassMark (4,460 vs 4,465).
❌Smaller total L3 cache (10 MB vs 15 MB).
❌64.7% higher power demand at 140W vs 85W.

Xeon E5-2609 v3

2014

Why buy it

✅+0.1% higher PassMark.
✅+50% larger total L3 cache (15 MB vs 10 MB).
✅Draws 85W instead of 140W, a 55W reduction.

Trade-offs

❌Lower PassMark per dollar, at 14.6 vs 16.3 PassMark/$ ($306 MSRP vs $273 MSRP).

Quick Answers

So, is Xeon E5-2609 v3 better than Xeon E5-1603 v3?

It depends on what you want from the system. For gaming, Xeon E5-1603 v3 is ahead with a 1.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon E5-2609 v3 pulls ahead with 0.1% better PassMark. Xeon E5-2609 v3 also has the bigger cache pool with 50% larger total L3 cache (15 MB vs 10 MB).

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

For streaming, content creation, and heavier multitasking, Xeon E5-2609 v3 is the stronger fit. You are getting 0.1% better PassMark, backed by 6 cores and 6 threads. It also has the larger cache pool with 50% larger total L3 cache (15 MB vs 10 MB).

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

Xeon E5-2609 v3 is still the faster CPU overall, but Xeon E5-1603 v3 is easier to justify if budget matters more than peak performance. Xeon E5-2609 v3 comes in 12.1% more expensive on MSRP at $306 MSRP versus $273 MSRP, and it still gives you 0.1% better PassMark. The compromise is that Xeon E5-1603 v3 is still the better pure gaming CPU with a 1.3% average FPS lead across 50 shared CPU game tests in our data. Xeon E5-1603 v3 is also 12.0% better value on MSRP (16.3 vs 14.6 PassMark/$), 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 E5-2609 v3 makes more sense long term for 2026 and beyond. You are getting 50% larger total L3 cache (15 MB vs 10 MB) and more multi-core headroom with 6 cores / 6 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon E5-1603 v3 vs Xeon E5-2609 v3 Technical Specifications

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

Xeon E5-1603 v3

The Xeon E5-1603 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 4 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 10 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011-3. Thermal design power (TDP): 140 Watt. Memory support: DDR4-1333, DDR4-1600, DDR4-1866. Passmark benchmark score: 4,460 points. Launch price was $800.

Xeon E5-2609 v3

The Xeon E5-2609 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 6 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 15 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 85 Watt. Memory support: DDR4-1600. Passmark benchmark score: 4,465 points. Launch price was $800.

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Processing Power

The Xeon E5-1603 v3 packs 4 cores / 4 threads, while the Xeon E5-2609 v3 offers 6 cores / 6 threads — the Xeon E5-2609 v3 has 2 more cores. Boost clocks reach 2.8 GHz on the Xeon E5-1603 v3 versus 1.9 GHz on the Xeon E5-2609 v3 — a 38.3% clock advantage for the Xeon E5-1603 v3 (base: 2.8 GHz vs 1.9 GHz). Both are built on the Haswell-EP (2014−2015) architecture using a 22 nm process. In PassMark, the Xeon E5-1603 v3 scores 4,460 against the Xeon E5-2609 v3's 4,465 — a 0.1% lead for the Xeon E5-2609 v3. L3 cache: 10 MB (total) on the Xeon E5-1603 v3 vs 15 MB (total) on the Xeon E5-2609 v3.

Feature	Xeon E5-1603 v3	Xeon E5-2609 v3
Cores / Threads	4 / 4	6 / 6+50%
Boost Clock	2.8 GHz+47%	1.9 GHz
Base Clock	2.8 GHz+47%	1.9 GHz
L3 Cache	10 MB (total)	15 MB (total)+50%
L2 Cache	256K (per core)	256K (per core)
Process	22 nm	22 nm
Architecture	Haswell-EP (2014−2015)	Haswell-EP (2014−2015)
PassMark	4,460	4,465

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Memory & Platform

The Xeon E5-1603 v3 uses the LGA2011-3 socket (PCIe 3.0), while the Xeon E5-2609 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Xeon E5-1603 v3	Xeon E5-2609 v3
Socket	LGA2011-3	LGA2011
PCIe Generation	PCIe 3.0	PCIe 3.0

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Value Analysis

At launch, the Xeon E5-1603 v3 was priced at $273, while the Xeon E5-2609 v3 came in at $306. On launch pricing ($273 vs $306), Xeon E5-1603 v3 was $33 cheaper. In terms of value on MSRP (PassMark points per dollar), the Xeon E5-1603 v3 delivers 16.3 pts/$ vs 14.6 pts/$ for the Xeon E5-2609 v3 — making the Xeon E5-1603 v3 the 11.3% better value option.

Feature	Xeon E5-1603 v3	Xeon E5-2609 v3
MSRP	$273-11%	$306
Performance per Dollar	16.3+12%	14.6
Release Date	2014	2014

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