Opteron 6378 vs Xeon E5-1620

Opteron 6378 vs Xeon E5-1620 Performance Spectrum

Opteron 6378

16 / 16

5,889

+0.7%

Ryzen Threadripper PRO 3975WX

Ryzen Threadripper PRO 7965WX

Xeon E5-1620

4 / 8

5,848

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.

Opteron 6378 vs Xeon E5-1620 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 6378 vs Xeon E5-1620: Pros, Cons & Final Verdict

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

Opteron 6378

2012

Why buy it

✅Better for gaming: +5.5% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 115W instead of 130W, a 15W reduction.

Trade-offs

❌Smaller total L3 cache (8 MB vs 10 MB).

Xeon E5-1620

2012

Why buy it

✅+25% larger total L3 cache (10 MB vs 8 MB).
✅100+% more PCIe lanes (40 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Opteron 6378 across 50 shared CPU benchmark tests.
❌Lower PassMark (5,848 vs 5,889).
❌Launch MSRP is still $885 MSRP, while Opteron 6378 mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Opteron 6378 better than Xeon E5-1620?

Yes. Opteron 6378 is the better all-around CPU here. It gives you a 5.5% average FPS lead across 50 shared CPU game tests in our data, 0.7% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Opteron 6378 is the better pick. According to our tests, it delivers 5.5% 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, Opteron 6378 is the stronger fit. You are getting 0.7% better PassMark, backed by 16 cores and 16 threads.

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

Opteron 6378 is still the faster CPU overall, but Xeon E5-1620 is easier to justify if budget matters more than peak performance. Opteron 6378 comes in at an unclear MSRP at unclear MSRP versus $885 MSRP, and it still gives you a 5.5% average FPS lead across 50 shared CPU game tests in our data. Xeon E5-1620 is also 100.0% better value on MSRP (6.6 vs 0.0 PassMark/$), 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 6378 makes more sense long term for 2026 and beyond. You are getting more multi-core headroom with 16 cores / 16 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Opteron 6378 vs Xeon E5-1620 Technical Specifications

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

Opteron 6378

The Opteron 6378 is manufactured by AMD. It was released in 5 November 2012 (13 years ago). It is based on the Abu Dhabi (2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.4 GHz, with boost up to 3.3 GHz. L3 cache: 8 MB (total). L2 cache: 16 MB. Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 5,889 points. Launch price was $396.

Xeon E5-1620

The Xeon E5-1620 is manufactured by Intel. It was released in 6 March 2012 (13 years ago). It is based on the Sandy Bridge-E (2011−2013) architecture. It features 4 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 3.8 GHz. L3 cache: 10240 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 5,848 points. Launch price was $313.

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Processing Power

The Opteron 6378 packs 16 cores / 16 threads, while the Xeon E5-1620 offers 4 cores / 8 threads — the Opteron 6378 has 12 more cores. Boost clocks reach 3.3 GHz on the Opteron 6378 versus 3.8 GHz on the Xeon E5-1620 — a 14.1% clock advantage for the Xeon E5-1620 (base: 2.4 GHz vs 3.6 GHz). The Opteron 6378 uses the Abu Dhabi (2012) architecture (32 nm), while the Xeon E5-1620 uses Sandy Bridge-E (2011−2013) (32 nm). In PassMark, the Opteron 6378 scores 5,889 against the Xeon E5-1620's 5,848 — a 0.7% lead for the Opteron 6378. L3 cache: 8 MB (total) on the Opteron 6378 vs 10240 kB (total) on the Xeon E5-1620.

Feature	Opteron 6378	Xeon E5-1620
Cores / Threads	16 / 16+300%	4 / 8
Boost Clock	3.3 GHz	3.8 GHz+15%
Base Clock	2.4 GHz	3.6 GHz+50%
L3 Cache	8 MB (total)	10240 kB (total)+25%
L2 Cache	16 MB+6300%	256 kB (per core)
Process	32 nm	32 nm
Architecture	Abu Dhabi (2012)	Sandy Bridge-E (2011−2013)
PassMark	5,889	5,848
Cinebench R23 Multi	—	3,469
Geekbench 6 Single	—	612
Geekbench 6 Multi	—	2,250

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Memory & Platform

The Opteron 6378 uses the G34 socket (PCIe 2.0), while the Xeon E5-1620 uses LGA2011 (PCIe 2.0) — making them incompatible on the same motherboard.