Quick Verdict
The i3-10100 was a solid budget chip in 2020 thanks to the return of Hyper-Threading, but it is now outdated, held back by PCIe 3.0, DDR4-2666 limits, and an aging 14nm process.
Overview
Launch
2020
Status
ActiveGeneration
10th Gen (Comet Lake)
Market
Desktop
The Intel Core i3-10100 is a 4-core, 8-thread desktop processor built on the 14nm Comet Lake architecture, bringing Hyper-Threading back to the desktop i3 tier with UHD Graphics 630 and a 65 W TDP.
The Core i3-10100 features four Cypress Cove cores with Hyper-Threading, a 3.6 GHz base clock, and UHD Graphics 630. It operates on the LGA 1200 socket with PCIe 3.
0 and DDR4-2666 memory support.
Specifications
Performance
Office work and web browsing are fast, but heavy multitasking will show the limitations of 4 cores.
Can run a single light VM, but 4 cores and 8 threads limit serious virtualization use.
Can handle 1080p gaming with a mid-range GPU, though it will bottleneck newer titles compared to 12th-gen alternatives.
The 14nm process is less power-efficient than modern 10nm alternatives, drawing more power for less performance.
- •Playable in older and e-sports titles with a dedicated GPU
- •Will bottleneck GPUs above the GTX 1660 Super / RX 580 tier in modern games
- •Lacks the single-thread speed of newer architectures
- •No AI acceleration hardware
- •Lacks AVX-512 support found on mobile Tiger Lake chips
- •Not suitable for AI workloads
Architecture
14nm
Process Node
Comet Lake
Codename
4C / 8T
Core Config
6 MB
L3 Cache
65 W
TDP
Architecture Overview
The i3-10100 uses the Cypress Cove core, which is essentially the Skylake core backported to the 14nm process with minor refinements. While Intel marketed it as a new architecture, it was primarily a tactical response to AMD's Zen 2 competition, focusing on clock speed and bringing Hyper-Threading back to the budget tier.
CPU Design
It features 4 physical cores with Hyper-Threading (8 threads total). The cache structure is quite small by modern standards, with only 256 KB of L2 cache per core and a 6 MB shared L3 cache.
Memory Subsystem
The memory controller is limited to DDR4-2666 natively. While users can install faster memory, the CPU will not run it faster than 2666 MT/s without an unlocked 'K' series chip.
PCIe & I/O
It provides 16 lanes of PCIe 3.0, which is sufficient for most GPUs but lacks the headroom of PCIe 4.0 for high-speed NVMe drives.
Overclocking
The multiplier is locked. Memory speeds are also locked to DDR4-2666 on non-Z motherboards.
- Hyper-Threading restored (8 threads vs 4 threads)
- Slight clock speed increase over the i3-9100
- New LGA 1200 socket with updated chipsets
- Higher base clock of 3.6 GHz
Key Highlights
- Hyper-Threading provides a usable 8-thread experience
- High 3.6 GHz base clock ensures sustained performance
- UHD 630 iGPU is reliable for basic display tasks
- Very easy to cool with a 65 W TDP
- LGA 1200 allows an upgrade path to 11th-gen parts
- Outdated 14nm manufacturing process
- Limited to DDR4-2666 memory speeds on this SKU
- Only supports PCIe 3.0, bottlenecking modern NVMe drives
- Small 6 MB L3 cache compared to modern chips
- Lacks AVX-512 instructions
History
The Core i3-10100 launched in April 2020 as part of Intel's 10th-generation Comet Lake desktop lineup. Its most significant contribution to the market was not its performance, but the restoration of Hyper-Threading to the desktop i3 tier. Intel had infamously disabled Hyper-Threading on the 9th-gen i3-9100, a move widely perceived as a market segmentation tactic that backfired when AMD's Ryzen 3 3100 offered 8 threads at a similar price.
<br><br>By bringing back 8 threads, Intel stabilized the budget desktop market. However, the 10100 was fundamentally constrained by the aging 14nm process and the Skylake-derived Cypress Cove core. The artificial locking of memory speeds to DDR4-2666 on non-K parts drew heavy criticism from reviewers, as it left easy performance on the table.
Despite these flaws, the i3-10100 sold exceptionally well, becoming a staple of pre-built office PCs and budget gaming rigs during the 2020 pandemic hardware boom, bridging the gap until the architectural overhaul of the 12th generation.
Improvements over Previous Generation
- Hyper-Threading restored (8 threads vs 4 threads)
- Slight clock speed increase over the i3-9100
- New LGA 1200 socket with updated chipsets
- Higher base clock of 3.6 GHz
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
The i3-10100 only makes sense today if you are upgrading an existing LGA 1200 system on an extremely tight budget and can find the chip used for a very low price. It can also be considered if you are repairing an office PC that already uses an LGA 1200 motherboard and you just need a drop-in replacement. However, for any new build, it is obsolete. The i3-12100 offers a massive architectural leap for a similar price, featuring PCIe 5.0, DDR5 support, and dramatically higher single-core performance. Avoid building a new system around the 10100 entirely.
Avoid if…
- You are building a new PC (buy the i3-12100 instead)
- You plan to do any modern gaming
- You need fast storage speeds (limited to PCIe 3.0)
- You want any form of future upgrade path
Use Cases
Interesting Facts
The return of Hyper-Threading on the i3 was a direct result of AMD's Ryzen 3 offering 4 cores and 8 threads at a low price.
Despite being a 2020 chip, its underlying architecture traces its roots back to the 2015 Skylake design.
Intel restricted DDR4 speeds to 2666 MT/s on non-K 10th-gen parts, a controversial decision that hurt performance in memory-sensitive games.
It launched without a bundled cooler in many regions, requiring buyers to factor in an extra $15-$20 for a stock cooler.
The 6 MB L3 cache is exactly the same size as the cache found on the i3-8100 from 2018.
Its single-core performance is roughly equivalent to a stock Intel Core i7-7700 from 2017.
The LGA 1200 socket it introduced was only used for two generations (10th and 11th) before being replaced by LGA 1700.
It lacks the modern VMD (Volume Management Device) support found on newer Intel chips for NVMe RAID setups.
The UHD Graphics 630 is architecturally identical to the HD Graphics 630 found on 7th-gen Kaby Lake chips.
At launch, it was widely criticized for offering too little improvement over the i3-9100 outside of the added threads.
People Also Ask
Is the Intel Core i3-10100 good for gaming?
It is adequate for 1080p gaming with a mid-range GPU, but it will bottleneck performance in modern CPU-heavy games.
Does the i3-10100 have Hyper-Threading?
Yes, it has 4 cores and 8 threads, marking the return of Hyper-Threading to the desktop i3 lineup.
What is the difference between i3-10100 and i3-10100F?
The 10100F lacks integrated graphics, which lowers its price and TDP slightly, but CPU performance is identical.
Can the i3-10100 run DDR4-3200?
No, the i3-10100 officially supports a maximum memory speed of DDR4-2666. Faster RAM will downclock.
Does the i3-10100 come with a cooler?
It varied by region, but many retail boxed units did not include a stock cooler.
What socket does the i3-10100 use?
LGA 1200.
Is the i3-10100 better than the Ryzen 3 3100?
The 10100 generally has better single-core and gaming performance, while the 3100 has a more modern architecture and PCIe 4.0.
Does the i3-10100 support PCIe 4.0?
No, it is limited to PCIe 3.0.
What is the TDP of the i3-10100?
65 W base, with a PL2 of 90 W.
Can I upgrade from i3-10100 to i9-11900K?
Yes, as long as your motherboard has a compatible BIOS, you can upgrade to any 11th-gen LGA 1200 processor.
Frequently Asked Questions
What is the base clock?
3.6 GHz.
What is the max boost clock?
4.3 GHz.
How much L3 cache does it have?
6 MB.
What is the part number?
SRH3N.
Does it support ECC memory?
No.
What integrated graphics does it have?
UHD Graphics 630.
When was it released?
April 30th, 2020.
Can it be overclocked?
No, the multiplier is locked.
What is the TJ Max?
100°C.
What is the maximum supported memory speed?
DDR4-2666 MT/s.