Core i7-990X vs Xeon E3-1231 v3

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 i7-990X vs Xeon E3-1231 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.

Core i7-990X vs Xeon E3-1231 v3: Pros, Cons & Final Verdict

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

Core i7-990X

2011

Why buy it

✅+1.5% higher PassMark.
✅+50% larger total L3 cache (12 MB vs 8 MB).

Trade-offs

❌Launch MSRP is still $999 MSRP, while Xeon E3-1231 v3 mostly shows up through inconsistent older-market listings.
❌62.5% higher power demand at 130W vs 80W.

Xeon E3-1231 v3

2014

Why buy it

✅Draws 80W instead of 130W, a 50W reduction.

Trade-offs

❌Lower PassMark (7,031 vs 7,135).
❌Smaller total L3 cache (8 MB vs 12 MB).

Quick Answers

So, is Xeon E3-1231 v3 better than Core i7-990X?

Not really, because they are built for different jobs. Xeon E3-1231 v3 makes more sense for workstation-style multi-core throughput, while Core i7-990X 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, Core i7-990X is the stronger fit. You are getting 1.5% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 50% larger total L3 cache (12 MB vs 8 MB).

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

Xeon E3-1231 v3 is still the much better call for a fresh build. Xeon E3-1231 v3 comes in at an unclear MSRP at unclear MSRP versus $999 MSRP, and it still gives you a 0.9% average FPS lead across 50 shared CPU game tests in our data. Core i7-990X only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2011 platform. Even with 100.0% better value on paper (7.1 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1366.

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

Xeon E3-1231 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.

Core i7-990X vs Xeon E3-1231 v3 Technical Specifications

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

Core i7-990X

The Core i7-990X is manufactured by Intel. It was released in 24 February 2011 (14 years ago). It is based on the Gulftown (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 3.46 GHz, with boost up to 3.73 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 7,135 points. Launch price was $1,104.

Xeon E3-1231 v3

The Xeon E3-1231 v3 is manufactured by Intel. It was released in 11 May 2014 (11 years ago). It is based on the Haswell-WS (2013−2014) architecture. It features 4 cores and 8 threads. Base frequency is 3.4 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: LGA1150. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 7,031 points. Launch price was $240.

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Processing Power

The Core i7-990X packs 6 cores / 12 threads, while the Xeon E3-1231 v3 offers 4 cores / 8 threads — the Core i7-990X has 2 more cores. Boost clocks reach 3.73 GHz on the Core i7-990X versus 3.8 GHz on the Xeon E3-1231 v3 — a 1.9% clock advantage for the Xeon E3-1231 v3 (base: 3.46 GHz vs 3.4 GHz). The Core i7-990X uses the Gulftown (2010−2011) architecture (32 nm), while the Xeon E3-1231 v3 uses Haswell-WS (2013−2014) (22 nm). In PassMark, the Core i7-990X scores 7,135 against the Xeon E3-1231 v3's 7,031 — a 1.5% lead for the Core i7-990X. L3 cache: 12 MB (total) on the Core i7-990X vs 8 MB (total) on the Xeon E3-1231 v3.

Feature	Core i7-990X	Xeon E3-1231 v3
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	3.73 GHz	3.8 GHz+2%
Base Clock	3.46 GHz+2%	3.4 GHz
L3 Cache	12 MB (total)+50%	8 MB (total)
L2 Cache	256 kB (per core)	256K (per core)
Process	32 nm	22 nm-31%
Architecture	Gulftown (2010−2011)	Haswell-WS (2013−2014)
PassMark	7,135+1%	7,031

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Memory & Platform

The Core i7-990X uses the LGA1366 socket (PCIe 2.0), while the Xeon E3-1231 v3 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard.