Core i7-975 vs Pentium Gold G6400T

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 i7-975 vs Pentium Gold G6400T 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 i7-975 vs Pentium Gold G6400T: Pros, Cons & Final Verdict

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

Core i7-975

2009

Why buy it

✅Better for gaming: +9.9% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (8 MB vs 4 MB).

Trade-offs

❌Lower PassMark (3,527 vs 3,544).
❌Launch MSRP is still $999 MSRP, while Pentium Gold G6400T mostly shows up through inconsistent older-market listings.
❌271.4% higher power demand at 130W vs 35W.

Pentium Gold G6400T

2020

Why buy it

✅+0.5% higher PassMark.
✅Draws 35W instead of 130W, a 95W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-975 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (4 MB vs 8 MB).

Quick Answers

So, is Pentium Gold G6400T better than Core i7-975?

It depends on what you want from the system. For gaming, Core i7-975 is ahead with a 9.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium Gold G6400T pulls ahead with 0.5% better PassMark. Core i7-975 also has the bigger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Pentium Gold G6400T is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 4 threads.

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

Pentium Gold G6400T is still the much better call for a fresh build. Pentium Gold G6400T comes in at an unclear MSRP at unclear MSRP versus $999 MSRP, and it still gives you 0.5% better PassMark. Core i7-975 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 100.0% better value on paper (3.5 vs 0.0 PassMark/$), 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?

Pentium Gold G6400T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2009) and more multi-core headroom with 2 cores / 4 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-975 vs Pentium Gold G6400T Technical Specifications

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

Core i7-975

The Core i7-975 is manufactured by Intel. It was released in 2 June 2009 (16 years ago). It is based on the Bloomfield (2008−2010) architecture. It features 4 cores and 8 threads. Base frequency is 3.33 GHz, with boost up to 3.6 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 3,527 points. Launch price was $476.

Pentium Gold G6400T

The Pentium Gold G6400T is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 4 threads. Base frequency: 3.4 GHz. L3 cache: 4 MB Intel® Smart Cache. Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 3,544 points. Launch price was $69.

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Processing Power

The Core i7-975 packs 4 cores / 8 threads, while the Pentium Gold G6400T offers 2 cores / 4 threads — the Core i7-975 has 2 more cores. The Core i7-975 is built on the Bloomfield (2008−2010) architecture. In PassMark, the Core i7-975 scores 3,527 against the Pentium Gold G6400T's 3,544 — a 0.5% lead for the Pentium Gold G6400T. L3 cache: 8 MB (total) on the Core i7-975 vs 4 MB Intel® Smart Cache on the Pentium Gold G6400T.

Feature	Core i7-975	Pentium Gold G6400T
Cores / Threads	4 / 8+100%	2 / 4
Boost Clock	3.6 GHz	—
Base Clock	3.33 GHz	3.4 GHz+2%
L3 Cache	8 MB (total)+100%	4 MB Intel® Smart Cache
L2 Cache	256 kB (per core)	—
Process	45 nm	14 nm-69%
Architecture	Bloomfield (2008−2010)	—
PassMark	3,527	3,544

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Memory & Platform

The Core i7-975 uses the LGA1366 socket (PCIe 2.0), while the Pentium Gold G6400T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.