Opteron 3320 EE vs Xeon E5603

Opteron 3320 EE vs Xeon E5603 Performance Spectrum

Opteron 3320 EE

4 / 4

1,918

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon E5603

4 / 4

1,935

+0.9%

About PassMark

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.

Opteron 3320 EE vs Xeon E5603 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.

Opteron 3320 EE vs Xeon E5603: Pros, Cons & Final Verdict

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

Opteron 3320 EE

2012

Why buy it

✅+100% larger total L3 cache (8 MB vs 4 MB).
✅Draws 25W instead of 80W, a 55W reduction.

Trade-offs

❌Lower PassMark (1,918 vs 1,935).

Xeon E5603

2011

Why buy it

✅+0.9% higher PassMark.
✅100+% more PCIe lanes (32 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (4 MB vs 8 MB).
❌Launch MSRP is still $188 MSRP, while Opteron 3320 EE mostly shows up through inconsistent older-market listings.
❌220% higher power demand at 80W vs 25W.

Quick Answers

So, is Opteron 3320 EE better than Xeon E5603?

It depends on what you want from the system. For gaming, Opteron 3320 EE is ahead with a 1.1% average FPS lead across 49 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon E5603 pulls ahead with 0.9% better PassMark. Opteron 3320 EE also has the bigger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Xeon E5603 is the stronger fit. You are getting 0.9% better PassMark, backed by 4 cores and 4 threads.

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

Opteron 3320 EE is still the faster CPU overall, but Xeon E5603 is easier to justify if budget matters more than peak performance. Opteron 3320 EE comes in at an unclear MSRP at unclear MSRP versus $188 MSRP, and it still gives you a 1.1% average FPS lead across 49 shared CPU game tests in our data. The compromise is that Xeon E5603 is still stronger for heavier multi-core work with 0.9% better PassMark. Xeon E5603 is also 100.0% better value on MSRP (10.3 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Opteron 3320 EE makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2011) and 100% larger total L3 cache (8 MB vs 4 MB). That makes it the safer long-term bet.

Opteron 3320 EE vs Xeon E5603 Technical Specifications

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

Opteron 3320 EE

The Opteron 3320 EE is manufactured by AMD. It was released in 2015-01-01. It is based on the Delhi (2012−2013) architecture. It features 4 cores and 4 threads. Base frequency is 1.9 GHz, with boost up to 2.5 GHz. L3 cache: 8192 kB (total). L2 cache: 4096 kB. Built on 32 nm process technology. Socket: AM3+. Thermal design power (TDP): 25 Watt. Memory support: DDR3. Passmark benchmark score: 1,918 points. Launch price was $800.

Xeon E5603

The Xeon E5603 is manufactured by Intel. It was released in 14 February 2011 (14 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 4 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 1,935 points. Launch price was $286.

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Processing Power

Both the Opteron 3320 EE and Xeon E5603 share an identical 4-core/4-thread configuration. Boost clocks reach 2.5 GHz on the Opteron 3320 EE versus 1.6 GHz on the Xeon E5603 — a 43.9% clock advantage for the Opteron 3320 EE (base: 1.9 GHz vs 1.6 GHz). The Opteron 3320 EE uses the Delhi (2012−2013) architecture (32 nm), while the Xeon E5603 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Opteron 3320 EE scores 1,918 against the Xeon E5603's 1,935 — a 0.9% lead for the Xeon E5603. L3 cache: 8192 kB (total) on the Opteron 3320 EE vs 4 MB (total) on the Xeon E5603.

Feature	Opteron 3320 EE	Xeon E5603
Cores / Threads	4 / 4	4 / 4
Boost Clock	2.5 GHz+56%	1.6 GHz
Base Clock	1.9 GHz+19%	1.6 GHz
L3 Cache	8192 kB (total)+100%	4 MB (total)
L2 Cache	4096 kB+1500%	256 kB (per core)
Process	32 nm	32 nm
Architecture	Delhi (2012−2013)	Westmere-EP (2010−2011)
PassMark	1,918	1,935

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Memory & Platform

The Opteron 3320 EE uses the AM3+ socket (PCIe 2.0), while the Xeon E5603 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.