Processor U300 vs Xeon E3-1240 v6

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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Processor U300

2023

Why buy it

✅+1.9% higher PassMark.
✅Draws 15W instead of 72W, a 57W reduction.
✅Newer platform on FCBGA1744 with DDR5 support instead of LGA1151 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E3-1240 v6 across 4 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon E3-1240 v6, which brings 4 cores / 8 threads.
❌Launch MSRP is still $193 MSRP, while Xeon E3-1240 v6 mostly shows up through inconsistent older-market listings.

Xeon E3-1240 v6

2017

Why buy it

✅Better for gaming: +6.4% higher average FPS across 4 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.

Trade-offs

❌Lower PassMark (8,731 vs 8,897).
❌380% higher power demand at 72W vs 15W.
❌Older platform position on LGA1151 with DDR4, while Processor U300 moves to FCBGA1744 and DDR5.

Processor U300

2023

Xeon E3-1240 v6

2017

Why buy it

✅+1.9% higher PassMark.
✅Draws 15W instead of 72W, a 57W reduction.
✅Newer platform on FCBGA1744 with DDR5 support instead of LGA1151 and DDR4.

Why buy it

✅Better for gaming: +6.4% higher average FPS across 4 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E3-1240 v6 across 4 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon E3-1240 v6, which brings 4 cores / 8 threads.
❌Launch MSRP is still $193 MSRP, while Xeon E3-1240 v6 mostly shows up through inconsistent older-market listings.

Trade-offs

❌Lower PassMark (8,731 vs 8,897).
❌380% higher power demand at 72W vs 15W.
❌Older platform position on LGA1151 with DDR4, while Processor U300 moves to FCBGA1744 and DDR5.

Quick Answers

So, is Processor U300 better than Xeon E3-1240 v6?

Not in a simple one-size-fits-all way. Xeon E3-1240 v6 makes more sense for workstation-style multi-core throughput, while Processor U300 is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Processor U300 is the better fit. You are getting 1.9% better PassMark, backed by 5 cores and 6 threads.

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

Processor U300 is the smarter buy today. Processor U300 is at an unclear MSRP at $193 MSRP versus unclear MSRP, and it gives you 1.9% better PassMark. The trade-off is that Xeon E3-1240 v6 is still the better pure gaming CPU with a 6.4% average FPS lead across 4 shared CPU game tests in our data. It is also 100.0% better value on MSRP (46.1 vs 0.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Processor U300 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2017), a healthier platform with FCBGA1744 and DDR5 instead of LGA1151, and more multi-core headroom with 5 cores / 6 threads instead of 4/8. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Processor U300 Benchmark Check

Xeon E3-1240 v6 Benchmark Check

Path of Exile 2

Preset	Processor U300	Xeon E3-1240 v6
1080p
low	183 FPS	203 FPS
medium	150 FPS	158 FPS
high	122 FPS	127 FPS
ultra	100 FPS	91 FPS
1440p
low	150 FPS	170 FPS
medium	118 FPS	131 FPS
high	96 FPS	104 FPS
ultra	78 FPS	74 FPS
4K
low	84 FPS	71 FPS
medium	72 FPS	58 FPS
high	57 FPS	45 FPS
ultra	45 FPS	36 FPS

Open Processor U300 Open Xeon E3-1240 v6

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Processor U300	Xeon E3-1240 v6
1080p
low	166 FPS	218 FPS
medium	137 FPS	216 FPS
high	126 FPS	197 FPS
ultra	110 FPS	169 FPS
1440p
low	146 FPS	218 FPS
medium	123 FPS	193 FPS
high	115 FPS	176 FPS
ultra	99 FPS	151 FPS
4K
low	113 FPS	182 FPS
medium	98 FPS	158 FPS
high	85 FPS	134 FPS
ultra	72 FPS	111 FPS

Open Processor U300 Open Xeon E3-1240 v6

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Processor U300	Xeon E3-1240 v6
1080p
low	222 FPS	218 FPS
medium	222 FPS	218 FPS
high	222 FPS	218 FPS
ultra	222 FPS	218 FPS
1440p
low	222 FPS	218 FPS
medium	222 FPS	218 FPS
high	222 FPS	218 FPS
ultra	222 FPS	218 FPS
4K
low	222 FPS	218 FPS
medium	222 FPS	218 FPS
high	206 FPS	218 FPS
ultra	163 FPS	218 FPS

Open Processor U300 Open Xeon E3-1240 v6

League of Legends

League of Legends

Valorant

Preset	Processor U300	Xeon E3-1240 v6
1080p
low	222 FPS	218 FPS
medium	222 FPS	218 FPS
high	222 FPS	218 FPS
ultra	222 FPS	218 FPS
1440p
low	222 FPS	218 FPS
medium	222 FPS	218 FPS
high	222 FPS	218 FPS
ultra	222 FPS	218 FPS
4K
low	222 FPS	218 FPS
medium	222 FPS	218 FPS
high	222 FPS	218 FPS
ultra	222 FPS	218 FPS

Open Processor U300 Open Xeon E3-1240 v6

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Processor U300 and Xeon E3-1240 v6

Processor U300

The Processor U300 is manufactured by Intel. It was released in 4 January 2023 (2 years ago). It is based on the Raptor Lake-U (2023) architecture. It features 5 cores and 6 threads. Base frequency is 1.2 GHz, with boost up to 4.4 GHz. L3 cache: 8 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 15 Watt. Memory support: DDR4, DDR5 Dual-channel. Passmark benchmark score: 8,897 points. Launch price was $193.

Xeon E3-1240 v6

The Xeon E3-1240 v6 is manufactured by Intel. It was released in 28 March 2017 (8 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 4 cores and 8 threads. Base frequency is 3.7 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 72 Watt. Memory support: DDR4-2400, DDR3L-1866. Passmark benchmark score: 8,731 points. Launch price was $272.

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Processing Power

The Processor U300 packs 5 cores / 6 threads, while the Xeon E3-1240 v6 offers 4 cores / 8 threads — the Processor U300 has 1 more core. Boost clocks reach 4.4 GHz on the Processor U300 versus 4.1 GHz on the Xeon E3-1240 v6 — a 7.1% clock advantage for the Processor U300 (base: 1.2 GHz vs 3.7 GHz). The Processor U300 uses the Raptor Lake-U (2023) architecture (10 nm), while the Xeon E3-1240 v6 uses Kaby Lake (2016−2019) (14 nm). In PassMark, the Processor U300 scores 8,897 against the Xeon E3-1240 v6's 8,731 — a 1.9% lead for the Processor U300. L3 cache: 8 MB (total) on the Processor U300 vs 8 MB on the Xeon E3-1240 v6.

Feature	Processor U300	Xeon E3-1240 v6
Cores / Threads	5 / 6+25%	4 / 8
Boost Clock	4.4 GHz+7%	4.1 GHz
Base Clock	1.2 GHz	3.7 GHz+208%
L3 Cache	8 MB (total)	8 MB
L2 Cache	1.25 MB (per core)+25%	1 MB
Process	10 nm-29%	14 nm
Architecture	Raptor Lake-U (2023)	Kaby Lake (2016−2019)
PassMark	8,897+2%	8,731

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Memory & Platform

The Processor U300 uses the FCBGA1744 socket (PCIe 5.0), while the Xeon E3-1240 v6 uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.