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 i7-3612QE vs Xeon E5645 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 i7-3612QE vs Xeon E5645: Pros, Cons & Final Verdict

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

Core i7-3612QE

2012

Why buy it

✅Draws 35W instead of 80W, a 45W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 4000, while Xeon E5645 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5645 across 50 shared CPU benchmark tests.
❌Lower PassMark (4,929 vs 4,942).
❌Smaller total L3 cache (6 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon E5645, which brings 6 cores / 12 threads.
❌Lower PassMark per dollar, at 11.6 vs 16.8 PassMark/$ ($426 MSRP vs $294 MSRP).

Xeon E5645

2010

Why buy it

✅Better for gaming: +5.3% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (12 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads.
✅Costs $132 less on MSRP ($294 MSRP vs $426 MSRP).
✅Delivers 45.3% more PassMark for each dollar spent, at 16.8 vs 11.6 PassMark/$ ($294 MSRP vs $426 MSRP).

Trade-offs

❌128.6% higher power demand at 80W vs 35W.
❌No integrated graphics, while Core i7-3612QE can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Xeon E5645 better than Core i7-3612QE?

Not really, because they are built for different jobs. Xeon E5645 makes more sense for workstation-style multi-core throughput, while Core i7-3612QE is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon E5645 is the better pick. According to our tests, it delivers 5.3% 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, Xeon E5645 is the stronger fit. You are getting 0.3% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 100% larger total L3 cache (12 MB vs 6 MB).

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

Xeon E5645 is the better buy right now. Xeon E5645 comes in $132 cheaper on MSRP at $294 MSRP versus $426 MSRP, and it still gives you a 5.3% average FPS lead across 50 shared CPU game tests in our data. It is also 45.3% better value on MSRP (16.8 vs 11.6 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i7-3612QE makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2010). That makes it the safer long-term bet.

Core i7-3612QE vs Xeon E5645 Technical Specifications

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

Core i7-3612QE

The Core i7-3612QE is manufactured by Intel. It was released in 29 April 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 8 threads. Base frequency is 2.1 GHz, with boost up to 3.1 GHz. L3 cache: 6144 kB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: BGA1023. Thermal design power (TDP): 35 Watt. Memory support: unknown Dual-channel. Passmark benchmark score: 4,929 points. Launch price was $69.

Xeon E5645

The Xeon E5645 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.4 GHz, with boost up to 2.67 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 4,942 points. Launch price was $294.

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Processing Power

The Core i7-3612QE packs 4 cores / 8 threads, while the Xeon E5645 offers 6 cores / 12 threads — the Xeon E5645 has 2 more cores. Boost clocks reach 3.1 GHz on the Core i7-3612QE versus 2.67 GHz on the Xeon E5645 — a 14.9% clock advantage for the Core i7-3612QE (base: 2.1 GHz vs 2.4 GHz). The Core i7-3612QE uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Xeon E5645 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i7-3612QE scores 4,929 against the Xeon E5645's 4,942 — a 0.3% lead for the Xeon E5645. L3 cache: 6144 kB (total) on the Core i7-3612QE vs 12 MB (total) on the Xeon E5645.

Feature	Core i7-3612QE	Xeon E5645
Cores / Threads	4 / 8	6 / 12+50%
Boost Clock	3.1 GHz+16%	2.67 GHz
Base Clock	2.1 GHz	2.4 GHz+14%
L3 Cache	6144 kB (total)	12 MB (total)+100%
L2 Cache	256 kB (per core)	256 kB (per core)
Process	22 nm-31%	32 nm
Architecture	Ivy Bridge (2012−2013)	Westmere-EP (2010−2011)
PassMark	4,929	4,942
Geekbench 6 Single	640	—
Geekbench 6 Multi	2,200	—

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Memory & Platform

The Core i7-3612QE uses the BGA1023 socket (PCIe 3.0), while the Xeon E5645 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Core i7-3612QE versus DDR3-1333 on the Xeon E5645 — the Core i7-3612QE supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5645 supports up to 288 GB of RAM compared to 16 GB — 1700% more capacity for professional workloads. Memory channels: 2 (Core i7-3612QE) vs 3 (Xeon E5645). PCIe lanes: 16 (Core i7-3612QE) vs 0 (Xeon E5645) — the Core i7-3612QE offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Core i7-3612QE	Xeon E5645
Socket	BGA1023	LGA1366
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR3-1600+20%	DDR3-1333
Max RAM Capacity	16 GB	288 GB+1700%
RAM Channels	2	3+50%
ECC Support	Yes	Yes
PCIe Lanes	16	0

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Core i7-3612QE) vs VT-x (Xeon E5645). The Core i7-3612QE includes integrated graphics (Intel HD Graphics 4000), while the Xeon E5645 requires a dedicated GPU. Primary use case: Core i7-3612QE targets Industrial/Embedded, Xeon E5645 targets Server.

Feature	Core i7-3612QE	Xeon E5645
Integrated GPU	Yes	No
IGPU Model	Intel HD Graphics 4000	—
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x
Target Use	Industrial/Embedded	Server

💰

Value Analysis

At launch, the Core i7-3612QE was priced at $426, while the Xeon E5645 came in at $294. On launch pricing ($426 vs $294), Xeon E5645 was $132 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-3612QE delivers 11.6 pts/$ vs 16.8 pts/$ for the Xeon E5645 — making the Xeon E5645 the 36.9% better value option.

Feature	Core i7-3612QE	Xeon E5645
MSRP	$426	$294-31%
Performance per Dollar	11.6	16.8+45%
Release Date	2012	2010

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