Core i5-10400F vs Phenom II X6 1055T (95W)

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.

Core i5-10400F

2020

Why buy it

✅Better for gaming: +121.9% higher average FPS across 4 shared CPU benchmark tests.
✅+100% larger total L3 cache (12 MB vs 6 MB).
✅Draws 65W instead of 95W, a 30W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Phenom II X6 1055T (95W).

Trade-offs

❌Launch MSRP is still $160 MSRP, while Phenom II X6 1055T (95W) mostly shows up through inconsistent older-market listings.

Phenom II X6 1055T (95W)

2010

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 4 shared CPU benchmark tests.
❌Lower PassMark (4,965 vs 13,029).
❌Smaller total L3 cache (6 MB vs 12 MB).
❌46.2% higher power demand at 95W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Phenom II X6 1055T (95W)

2010

Why buy it

✅Better for gaming: +121.9% higher average FPS across 4 shared CPU benchmark tests.
✅+100% larger total L3 cache (12 MB vs 6 MB).
✅Draws 65W instead of 95W, a 30W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Phenom II X6 1055T (95W).

Why buy it

Trade-offs

❌Launch MSRP is still $160 MSRP, while Phenom II X6 1055T (95W) mostly shows up through inconsistent older-market listings.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 4 shared CPU benchmark tests.
❌Lower PassMark (4,965 vs 13,029).
❌Smaller total L3 cache (6 MB vs 12 MB).
❌46.2% higher power demand at 95W vs 65W.
❌No boxed cooler included, unlike Core i5-10400F.

Quick Answers

So, is Core i5-10400F better than Phenom II X6 1055T (95W)?

Yes. Core i5-10400F is the better overall CPU here. You are getting a 121.9% average FPS lead across 4 shared CPU game tests in our data, 162.4% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Core i5-10400F is the better pick here. According to our tests, it delivers 121.9% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i5-10400F is the better fit. You are getting 162.4% better PassMark, backed by 6 cores and 12 threads. It also carries 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?

Core i5-10400F is the smarter buy today. Core i5-10400F is at an unclear MSRP at $160 MSRP versus unclear MSRP, and it gives you a 121.9% average FPS lead across 4 shared CPU game tests in our data. It is also 100.0% better value on MSRP (81.4 vs 0.0 PassMark/$), 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?

Core i5-10400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2010), 100% larger total L3 cache (12 MB vs 6 MB), and more multi-core headroom with 6 cores / 12 threads instead of 6/6. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

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.

Core i5-10400F Benchmark Check

Phenom II X6 1055T (95W) Benchmark Check

Path of Exile 2

Preset	Core i5-10400F	Phenom II X6 1055T (95W)
1080p
low	192 FPS	124 FPS
medium	152 FPS	124 FPS
high	123 FPS	108 FPS
ultra	100 FPS	89 FPS
1440p
low	153 FPS	124 FPS
medium	119 FPS	113 FPS
high	97 FPS	88 FPS
ultra	79 FPS	72 FPS
4K
low	82 FPS	62 FPS
medium	70 FPS	56 FPS
high	55 FPS	43 FPS
ultra	43 FPS	34 FPS

Open Core i5-10400F Open Phenom II X6 1055T (95W)

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-10400F	Phenom II X6 1055T (95W)
1080p
low	326 FPS	124 FPS
medium	318 FPS	124 FPS
high	290 FPS	124 FPS
ultra	253 FPS	116 FPS
1440p
low	326 FPS	124 FPS
medium	292 FPS	124 FPS
high	267 FPS	124 FPS
ultra	234 FPS	104 FPS
4K
low	309 FPS	124 FPS
medium	258 FPS	117 FPS
high	235 FPS	98 FPS
ultra	199 FPS	72 FPS

Open Core i5-10400F Open Phenom II X6 1055T (95W)

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-10400F	Phenom II X6 1055T (95W)
1080p
low	326 FPS	124 FPS
medium	326 FPS	124 FPS
high	326 FPS	124 FPS
ultra	326 FPS	124 FPS
1440p
low	326 FPS	124 FPS
medium	326 FPS	124 FPS
high	326 FPS	124 FPS
ultra	326 FPS	124 FPS
4K
low	326 FPS	124 FPS
medium	326 FPS	124 FPS
high	289 FPS	124 FPS
ultra	229 FPS	124 FPS

Open Core i5-10400F Open Phenom II X6 1055T (95W)

League of Legends

League of Legends

Valorant

Preset	Core i5-10400F	Phenom II X6 1055T (95W)
1080p
low	326 FPS	124 FPS
medium	326 FPS	124 FPS
high	326 FPS	124 FPS
ultra	326 FPS	124 FPS
1440p
low	326 FPS	124 FPS
medium	326 FPS	124 FPS
high	326 FPS	124 FPS
ultra	326 FPS	124 FPS
4K
low	326 FPS	124 FPS
medium	326 FPS	124 FPS
high	326 FPS	124 FPS
ultra	326 FPS	124 FPS

Open Core i5-10400F Open Phenom II X6 1055T (95W)

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-10400F and Phenom II X6 1055T (95W)

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

Phenom II X6 1055T (95W)

The Phenom II X6 1055T (95W) is manufactured by AMD. It was released in 2009-01-01. It is based on the Thuban (2010) architecture. It features 6 cores and 6 threads. Base frequency is 2.8 GHz, with boost up to 3.3 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 4,965 points. Launch price was $149.

⚡

Processing Power

The Core i5-10400F packs 6 cores / 12 threads, matching the Phenom II X6 1055T (95W)'s 6 cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 3.3 GHz on the Phenom II X6 1055T (95W) — a 26.3% clock advantage for the Core i5-10400F (base: 2.9 GHz vs 2.8 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Phenom II X6 1055T (95W) uses Thuban (2010) (45 nm). In PassMark, the Core i5-10400F scores 13,029 against the Phenom II X6 1055T (95W)'s 4,965 — a 89.6% lead for the Core i5-10400F. L3 cache: 12 MB (total) on the Core i5-10400F vs 6 MB (total) on the Phenom II X6 1055T (95W).

Feature	Core i5-10400F	Phenom II X6 1055T (95W)
Cores / Threads	6 / 12	6 / 6
Boost Clock	4.3 GHz+30%	3.3 GHz
Base Clock	2.9 GHz+4%	2.8 GHz
L3 Cache	12 MB (total)+100%	6 MB (total)
L2 Cache	256K (per core)	512 kB (per core)+100%
Process	14 nm-69%	45 nm
Architecture	Comet Lake (2020−2025)	Thuban (2010)
PassMark	13,029+162%	4,965
Cinebench R23 Multi	8,191	—
Geekbench 6 Single	1,454	—
Geekbench 6 Multi	5,783	—

🧠

Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Phenom II X6 1055T (95W) uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i5-10400F	Phenom II X6 1055T (95W)
Socket	LGA1200	AM3
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2666	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

🔧

Advanced Features

Virtualization: VT-x, VT-d (Core i5-10400F) / not specified (Phenom II X6 1055T (95W)). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.