Opteron 6276 vs Xeon E3-1275L v3

Opteron 6276 vs Xeon E3-1275L v3 Performance Spectrum

Opteron 6276

16 / 16

6,348

+0.3%

Ryzen Embedded V1202B

Ryzen Embedded R1606G

Athlon Gold 7220U

Ryzen 3 PRO 2300U

Ryzen Threadripper 2920X

Ryzen 9 5900XT

Ryzen Threadripper 3970X

Ryzen Threadripper PRO 7965WX

Xeon E3-1275L v3

4 / 8

6,327

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 6276 vs Xeon E3-1275L 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.

Opteron 6276 vs Xeon E3-1275L v3: Pros, Cons & Final Verdict

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

Opteron 6276

2011

Why buy it

✅Better for gaming: +7.3% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark per dollar, at 8.1 vs 18.1 PassMark/$ ($788 MSRP vs $350 MSRP).
❌155.6% higher power demand at 115W vs 45W.
❌No integrated graphics, while Xeon E3-1275L v3 can still boot and troubleshoot without a discrete GPU.

Xeon E3-1275L v3

2014

Why buy it

✅Costs $438 less on MSRP ($350 MSRP vs $788 MSRP).
✅Delivers 124.4% more PassMark for each dollar spent, at 18.1 vs 8.1 PassMark/$ ($350 MSRP vs $788 MSRP).
✅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 Intel HD Graphics P4600, while Opteron 6276 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Opteron 6276 across 50 shared CPU benchmark tests.
❌Lower PassMark (6,327 vs 6,348).

Quick Answers

So, is Opteron 6276 better than Xeon E3-1275L v3?

Yes. Opteron 6276 is the better all-around CPU here. It gives you a 7.3% average FPS lead across 50 shared CPU game tests in our data and 0.3% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Opteron 6276 is the better pick. According to our tests, it delivers 7.3% 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 6276 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 6276 is still the faster CPU overall, but Xeon E3-1275L v3 is easier to justify if budget matters more than peak performance. Opteron 6276 comes in 125.1% more expensive on MSRP at $788 MSRP versus $350 MSRP, and it still gives you a 7.3% average FPS lead across 50 shared CPU game tests in our data. Xeon E3-1275L v3 is also 124.4% better value on MSRP (18.1 vs 8.1 PassMark/$), 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 E3-1275L v3 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2011). That makes it the safer long-term bet.

Opteron 6276 vs Xeon E3-1275L v3 Technical Specifications

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

Opteron 6276

The Opteron 6276 is manufactured by AMD. It was released in 14 November 2011 (14 years ago). It is based on the Interlagos (2011−2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.3 GHz, with boost up to 3.2 GHz. L3 cache: 8 MB (total). L2 cache: 2 MB (per module). Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 6,348 points. Launch price was $119.

Xeon E3-1275L v3

The Xeon E3-1275L v3 is manufactured by Intel. It was released in 2015-01-01. It features 4 cores and 8 threads. Base frequency is 2.7 GHz, with boost up to 3.9 GHz. L3 cache: 8 MB Intel® Smart Cache. Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 45 Watt. Memory support: DDR3-1333, DDR3-1600. Passmark benchmark score: 6,327 points. Launch price was $800.

⚡

Processing Power

The Opteron 6276 packs 16 cores / 16 threads, while the Xeon E3-1275L v3 offers 4 cores / 8 threads — the Opteron 6276 has 12 more cores. Boost clocks reach 3.2 GHz on the Opteron 6276 versus 3.9 GHz on the Xeon E3-1275L v3 — a 19.7% clock advantage for the Xeon E3-1275L v3 (base: 2.3 GHz vs 2.7 GHz). The Opteron 6276 is built on the Interlagos (2011−2012) architecture. In PassMark, the Opteron 6276 scores 6,348 against the Xeon E3-1275L v3's 6,327 — a 0.3% lead for the Opteron 6276. L3 cache: 8 MB (total) on the Opteron 6276 vs 8 MB Intel® Smart Cache on the Xeon E3-1275L v3.

Feature	Opteron 6276	Xeon E3-1275L v3
Cores / Threads	16 / 16+300%	4 / 8
Boost Clock	3.2 GHz	3.9 GHz+22%
Base Clock	2.3 GHz	2.7 GHz+17%
L3 Cache	8 MB (total)	8 MB Intel® Smart Cache
L2 Cache	2 MB (per module)	—
Process	32 nm	22 nm-31%
Architecture	Interlagos (2011−2012)	—
PassMark	6,348	6,327
Geekbench 6 Single	—	900
Geekbench 6 Multi	—	3,000

🧠

Memory & Platform

The Opteron 6276 uses the G34 socket (PCIe 2.0), while the Xeon E3-1275L v3 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Opteron 6276	Xeon E3-1275L v3
Socket	G34	LGA1150
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	—	DDR3-1600
Max RAM Capacity	—	32 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	16

🔧

Advanced Features

Virtualization: not specified (Opteron 6276) / VT-x, VT-d (Xeon E3-1275L v3). The Xeon E3-1275L v3 includes integrated graphics (Intel HD Graphics P4600), while the Opteron 6276 requires a dedicated GPU. Primary use case: Xeon E3-1275L v3 targets Low Power Server. Direct competitor: Xeon E3-1275L v3 rivals Xeon E3-1270 v3.

Feature	Opteron 6276	Xeon E3-1275L v3
Integrated GPU	—	Yes
IGPU Model	—	Intel HD Graphics P4600
Unlocked	—	No
AVX-512	—	No
Virtualization	—	VT-x, VT-d
Target Use	—	Low Power Server

💰

Value Analysis

At launch, the Opteron 6276 was priced at $788, while the Xeon E3-1275L v3 came in at $350. On launch pricing ($788 vs $350), Xeon E3-1275L v3 was $438 cheaper. In terms of value on MSRP (PassMark points per dollar), the Opteron 6276 delivers 8.1 pts/$ vs 18.1 pts/$ for the Xeon E3-1275L v3 — making the Xeon E3-1275L v3 the 76.7% better value option.

Feature	Opteron 6276	Xeon E3-1275L v3
MSRP	$788	$350-56%
Performance per Dollar	8.1	18.1+123%
Release Date	2011	2014

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