Core i7-3840QM vs Opteron 6378

Core i7-3840QM vs Opteron 6378 Performance Spectrum

Core i7-3840QM

4 / 8

5,871

0.0%

5,889

+0.3%

Ryzen Threadripper PRO 3975WX

Ryzen Threadripper PRO 7965WX

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.

Core i7-3840QM vs Opteron 6378 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.

Core i7-3840QM vs Opteron 6378: Pros, Cons & Final Verdict

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

Core i7-3840QM

2012

Why buy it

✅Draws 45W instead of 115W, a 70W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 4000, while Opteron 6378 needs a discrete GPU.

Trade-offs

❌Lower PassMark (5,871 vs 5,889).
❌Less compelling for workstation-style loads than Opteron 6378, which brings 16 cores / 16 threads.

Opteron 6378

2012

Why buy it

✅+0.3% higher PassMark.
✅Better for workstations and heavier parallel workloads: 16 cores / 16 threads.

Trade-offs

❌155.6% higher power demand at 115W vs 45W.
❌No integrated graphics, while Core i7-3840QM can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Opteron 6378 better than Core i7-3840QM?

Not really, because they are built for different jobs. Opteron 6378 makes more sense for workstation-style multi-core throughput, while Core i7-3840QM is the more practical desktop choice for gaming, platform cost, and everyday use.

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 0.3% better PassMark, backed by 16 cores and 16 threads.

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

Opteron 6378 still makes the most sense overall. Opteron 6378 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.3% better PassMark.

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.

Core i7-3840QM vs Opteron 6378 Technical Specifications

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

Core i7-3840QM

The Core i7-3840QM is manufactured by Intel. It was released in 3 September 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 8 threads. Base frequency is 2.8 GHz, with boost up to 3.8 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: PGA988. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 5,871 points. Launch price was $568.

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.

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Processing Power

The Core i7-3840QM packs 4 cores / 8 threads, while the Opteron 6378 offers 16 cores / 16 threads — the Opteron 6378 has 12 more cores. Boost clocks reach 3.8 GHz on the Core i7-3840QM versus 3.3 GHz on the Opteron 6378 — a 14.1% clock advantage for the Core i7-3840QM (base: 2.8 GHz vs 2.4 GHz). The Core i7-3840QM uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Opteron 6378 uses Abu Dhabi (2012) (32 nm). In PassMark, the Core i7-3840QM scores 5,871 against the Opteron 6378's 5,889 — a 0.3% lead for the Opteron 6378. Both processors carry 8 MB (total) of L3 cache.

Feature	Core i7-3840QM	Opteron 6378
Cores / Threads	4 / 8	16 / 16+300%
Boost Clock	3.8 GHz+15%	3.3 GHz
Base Clock	2.8 GHz+17%	2.4 GHz
L3 Cache	8 MB (total)	8 MB (total)
L2 Cache	256K (per core)+1500%	16 MB
Process	22 nm-31%	32 nm
Architecture	Ivy Bridge (2012−2013)	Abu Dhabi (2012)
PassMark	5,871	5,889
Geekbench 6 Single	676	—

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Memory & Platform

The Core i7-3840QM uses the PGA988 socket (PCIe 3.0), while the Opteron 6378 uses G34 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i7-3840QM	Opteron 6378
Socket	PGA988	G34
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR3-1600	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i7-3840QM) / not specified (Opteron 6378). The Core i7-3840QM includes integrated graphics (HD Graphics 4000), while the Opteron 6378 requires a dedicated GPU. Primary use case: Core i7-3840QM targets Mobile Workstation. Direct competitor: Core i7-3840QM rivals A10-5750M.