Phenom II X4 B97 vs Xeon E5520

Phenom II X4 B97 vs Xeon E5520 Performance Spectrum

Phenom II X4 B97

4 / 4

2,540

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon E5520

4 / 8

2,541

0.0%

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.

Phenom II X4 B97 vs Xeon E5520 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.

Phenom II X4 B97 vs Xeon E5520: Pros, Cons & Final Verdict

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

Phenom II X4 B97

2010

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5520 across 50 shared CPU benchmark tests.
❌Lower PassMark (2,540 vs 2,541).
❌Smaller total L3 cache (6 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon E5520, which brings 4 cores / 8 threads.
❌Launch MSRP is still $100 MSRP, while Xeon E5520 mostly shows up through inconsistent older-market listings.

Xeon E5520

2009

Why buy it

✅Better for gaming: +7.7% higher average FPS across 50 shared CPU benchmark tests.
✅+33.3% larger total L3 cache (8 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.
✅Draws 80W instead of 95W, a 15W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Xeon E5520 better than Phenom II X4 B97?

Not really, because they are built for different jobs. Xeon E5520 makes more sense for workstation-style multi-core throughput, while Phenom II X4 B97 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon E5520 is the better pick. According to our tests, it delivers 7.7% 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 E5520 is the stronger fit. You are getting 0% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 33.3% larger total L3 cache (8 MB vs 6 MB).

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

Xeon E5520 is still the much better call for a fresh build. Xeon E5520 comes in at an unclear MSRP at unclear MSRP versus $100 MSRP, and it still gives you a 7.7% average FPS lead across 50 shared CPU game tests in our data. Phenom II X4 B97 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (25.4 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM3.

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

Phenom II X4 B97 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2009). That makes it the safer long-term bet.

Phenom II X4 B97 vs Xeon E5520 Technical Specifications

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

Phenom II X4 B97

The Phenom II X4 B97 is manufactured by AMD. It was released in 11 May 2010 (15 years ago). It is based on the Deneb (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,540 points. Launch price was $100.

Xeon E5520

The Xeon E5520 is manufactured by Intel. It was released in 30 March 2009 (16 years ago). It is based on the Gainestown (2009−2010) architecture. It features 4 cores and 8 threads. Base frequency is 2.26 GHz, with boost up to 2.53 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 2,541 points. Launch price was $19.

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Processing Power

The Phenom II X4 B97 packs 4 cores / 4 threads, matching the Xeon E5520's 4 cores. Boost clocks reach 3.2 GHz on the Phenom II X4 B97 versus 2.53 GHz on the Xeon E5520 — a 23.4% clock advantage for the Phenom II X4 B97 (base: 3.2 GHz vs 2.26 GHz). The Phenom II X4 B97 uses the Deneb (2009−2011) architecture (45 nm), while the Xeon E5520 uses Gainestown (2009−2010) (45 nm). In PassMark, the Phenom II X4 B97 scores 2,540 against the Xeon E5520's 2,541 — a 0% lead for the Xeon E5520. L3 cache: 6 MB (total) on the Phenom II X4 B97 vs 8 MB (total) on the Xeon E5520.

Feature	Phenom II X4 B97	Xeon E5520
Cores / Threads	4 / 4	4 / 8
Boost Clock	3.2 GHz+26%	2.53 GHz
Base Clock	3.2 GHz+42%	2.26 GHz
L3 Cache	6 MB (total)	8 MB (total)+33%
L2 Cache	512 kB (per core)+100%	256 kB (per core)
Process	45 nm	45 nm
Architecture	Deneb (2009−2011)	Gainestown (2009−2010)
PassMark	2,540	2,541

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Memory & Platform

The Phenom II X4 B97 uses the AM3 socket (PCIe 2.0), while the Xeon E5520 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.