Pentium Gold G6505T vs Xeon L5638

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 Gold G6505T vs Xeon L5638 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 Gold G6505T vs Xeon L5638: Pros, Cons & Final Verdict

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

Pentium Gold G6505T

2021

Why buy it

✅Draws 35W instead of 60W, a 25W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon L5638 across 50 shared CPU benchmark tests.
❌Lower PassMark (3,698 vs 3,707).
❌Smaller total L3 cache (4 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon L5638, which brings 6 cores / 12 threads.

Xeon L5638

2010

Why buy it

✅Better for gaming: +12.2% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (12 MB vs 4 MB).
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads.

Trade-offs

❌71.4% higher power demand at 60W vs 35W.

Quick Answers

So, is Xeon L5638 better than Pentium Gold G6505T?

Not really, because they are built for different jobs. Xeon L5638 makes more sense for workstation-style multi-core throughput, while Pentium Gold G6505T 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 L5638 is the better pick. According to our tests, it delivers 12.2% 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 L5638 is the stronger fit. You are getting 0.2% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 200% larger total L3 cache (12 MB vs 4 MB).

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

Xeon L5638 still makes the most sense overall. Xeon L5638 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 12.2% average FPS lead across 50 shared CPU game tests in our data.

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

Pentium Gold G6505T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2010). That makes it the safer long-term bet.

Pentium Gold G6505T vs Xeon L5638 Technical Specifications

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

Pentium Gold G6505T

The Pentium Gold G6505T is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Comet Lake-R (2021) architecture. It features 2 cores and 4 threads. Base frequency is 3.6 GHz, with boost up to 3.6 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,698 points. Launch price was $75.

Xeon L5638

The Xeon L5638 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 GHz, with boost up to 2.4 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 3,707 points. Launch price was $90.

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Processing Power

The Pentium Gold G6505T packs 2 cores / 4 threads, while the Xeon L5638 offers 6 cores / 12 threads — the Xeon L5638 has 4 more cores. Boost clocks reach 3.6 GHz on the Pentium Gold G6505T versus 2.4 GHz on the Xeon L5638 — a 40% clock advantage for the Pentium Gold G6505T (base: 3.6 GHz vs 2 GHz). The Pentium Gold G6505T uses the Comet Lake-R (2021) architecture (14 nm), while the Xeon L5638 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Pentium Gold G6505T scores 3,698 against the Xeon L5638's 3,707 — a 0.2% lead for the Xeon L5638. L3 cache: 4 MB (total) on the Pentium Gold G6505T vs 12 MB (total) on the Xeon L5638.

Feature	Pentium Gold G6505T	Xeon L5638
Cores / Threads	2 / 4	6 / 12+200%
Boost Clock	3.6 GHz+50%	2.4 GHz
Base Clock	3.6 GHz+80%	2 GHz
L3 Cache	4 MB (total)	12 MB (total)+200%
L2 Cache	256 kB (per core)	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	Comet Lake-R (2021)	Westmere-EP (2010−2011)
PassMark	3,698	3,707

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Memory & Platform

The Pentium Gold G6505T uses the LGA1200 socket (PCIe 3.0), while the Xeon L5638 uses LGA1366 (PCIe 4.0) — making them incompatible on the same motherboard.