Pentium G645T vs Xeon 5140

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.

Pentium G645T vs Xeon 5140 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.

Pentium G645T vs Xeon 5140: Pros, Cons & Final Verdict

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

Pentium G645T

2012

Why buy it

✅Draws 35W instead of 65W, a 30W reduction.

Trade-offs

❌Launch MSRP is still $64 MSRP, while Xeon 5140 mostly shows up through inconsistent older-market listings.

Xeon 5140

2006

Why buy it

Trade-offs

❌Lower PassMark (1,235 vs 1,238).
❌85.7% higher power demand at 65W vs 35W.

Quick Answers

So, is Pentium G645T better than Xeon 5140?

Not really, because they are built for different jobs. Xeon 5140 makes more sense for workstation-style multi-core throughput, while Pentium G645T is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Pentium G645T is the better pick. According to our tests, it delivers 1.8% 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, Pentium G645T is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 2 threads.

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

Pentium G645T is the better buy right now. Pentium G645T comes in at an unclear MSRP at $64 MSRP versus unclear MSRP, and it still gives you a 1.8% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (19.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium G645T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2006) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Pentium G645T vs Xeon 5140 Technical Specifications

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

Pentium G645T

The Pentium G645T is manufactured by Intel. It was released in 2007-01-01. It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,238 points. Launch price was $69.

Xeon 5140

The Xeon 5140 is manufactured by Intel. It was released in Junho 2006 (19 years ago). It is based on the Woodcrest (2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.33 GHz, with boost up to 2.33 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 65 Watt. Memory support: DDR2. Passmark benchmark score: 1,235 points. Launch price was $15.

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Processing Power

Both the Pentium G645T and Xeon 5140 share an identical 2-core/2-thread configuration. Boost clocks reach 2.5 GHz on the Pentium G645T versus 2.33 GHz on the Xeon 5140 — a 7% clock advantage for the Pentium G645T (base: 2.5 GHz vs 2.33 GHz). The Pentium G645T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Xeon 5140 uses Woodcrest (2006) (65 nm). In PassMark, the Pentium G645T scores 1,238 against the Xeon 5140's 1,235 — a 0.2% lead for the Pentium G645T. L3 cache: 3 MB (total) on the Pentium G645T vs 0 kB on the Xeon 5140.

Feature	Pentium G645T	Xeon 5140
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.5 GHz+7%	2.33 GHz
Base Clock	2.5 GHz+7%	2.33 GHz
L3 Cache	3 MB (total)	0 kB
L2 Cache	256 kB (per core)	4 MB+1500%
Process	32 nm-51%	65 nm
Architecture	Sandy Bridge (2011−2013)	Woodcrest (2006)
PassMark	1,238	1,235

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Memory & Platform

The Pentium G645T uses the LGA1155 socket (PCIe 2.0), while the Xeon 5140 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.