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Gaming Performance Comparison

Recommended System Requirements
Game Core i3-7100 2-Core 3.9GHz Core i5-670 3.46GHz
Cyberpunk 2077 36% 90%
Assassins Creed: Valhalla 83% 156%
Call of Duty: Black Ops Cold War 32% 84%
Grand Theft Auto VI 124% 213%
FIFA 21 27% 78%
Genshin Impact 3% 44%
Far Cry 6 115% 200%
Hitman 3 83% 156%
Watch Dogs Legion 83% 156%
World of Warcraft: Shadowlands 111% 196%

In terms of overall gaming performance, the Intel Core i3-7100 2-Core 3.9GHz is massively better than the Intel Core i5-670 3.46GHz when it comes to running the latest games. This also means it will be less likely to bottleneck more powerful GPUs, allowing them to achieve more of their gaming performance potential.

The Core i5-670 3.46GHz was released less than a year after the Core i3-7100 2-Core, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The Core i3-7100 2-Core and the Core i5-670 3.46GHz both have 2 cores, and so are quite likely to struggle with the latest games, or at least bottleneck high-end graphics cards when running them. With a decent accompanying GPU, the Core i3-7100 2-Core and the Core i5-670 3.46GHz may still be able to run slightly older games fairly effectively.

Both the Intel Core i3-7100 2-Core 3.9GHz and the Intel Core i5-670 3.46GHz have the same number of threads. Both the Core i3-7100 2-Core and the Core i5-670 3.46GHz use hyperthreading. The Core i3-7100 2-Core has 2 logical threads per physical core and the Core i5-670 3.46GHz has 2.

Multiple threads are useful for improving the performance of multi-threaded applications. Additional cores and their accompanying thread will always be beneficial for multi-threaded applications. Hyperthreading will be beneficial for applications optimized for it, but it may slow others down. For games, the number of threads is largely irrelevant, as long as you have at least 2 cores (preferably 4), and hyperthreading can sometimes even hit performance.

More important for gaming than the number of cores and threads is the clock rate. Problematically, unless the two CPUs are from the same family, this can only serve as a general guide and nothing like an exact comparison, because the clock cycles per instruction (CPI) will vary so much.

The Core i3-7100 2-Core and Core i5-670 3.46GHz are not from the same family of CPUs, so their clock speeds are by no means directly comparable. Bear in mind, then, that while the Core i3-7100 2-Core has a 0.44 GHz faster frequency, this is not always an indicator that it will be superior in performance, despite frequency being crucial when trying to avoid GPU bottlenecking. In this case, however, the difference is enough that it possibly indicates the superiority of the .

Aside from the clock rate, the next-most important CPU features for PC game performance are L2 and L3 cache size. Faster than RAM, the more cache available, the more data that can be stored for lightning-fast retrieval. L1 Cache is not usually an issue anymore for gaming, with most high-end CPUs eking out about the same L1 performance, and L2 is more important than L3 - but L3 is still important if you want to reach the highest levels of performance. Bear in mind that although it is better to have a larger cache, the larger it is, the higher the latency, so a balance has to be struck.

The Core i3-7100 2-Core and the Core i5-670 3.46GHz have the same L2 cache size, but the Core i5-670 3.46GHz has a 1 MB bigger L3 cache, so in this area, it wins out over the Core i3-7100 2-Core.

The maximum Thermal Design Power is the power in Watts that the CPU will consume in the worst case scenario. The lithography is the semiconductor manufacturing technology being used to create the CPU - the smaller this is, the more transistors that can be fit into the CPU, and the closer the connections. For both the lithography and the TDP, it is the lower the better, because a lower number means a lower amount of power is necessary to run the CPU, and consequently a lower amount of heat is produced.

The Core i3-7100 2-Core has a 22 Watt lower Maximum TDP than the Core i5-670 3.46GHz, and was created with a 18 nm smaller manufacturing technology. What this means is the Core i3-7100 2-Core will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

The Core i5-670 3.46GHz has an on-board GPU, which means that it will be capable of running basic graphics applications (i.e., games) without the need for a dedicated graphics card. The Core i3-7100 2-Core, however, does not, and you will probably have to look for a dedicated card if you wish to use it at all.

For in-depth GPU comparisons with the HD i5 670, click on the following GPU overview comparison icon (visible throughout Game-Debate), and choose a GPU from the list to compare against:

On-board GPUs tend to be fairly awful in comparison to dedicated cards from the likes of AMD or Nvidia, but as they are built into the CPU, they also tend to be cheaper and require far less power to run (this makes them a good choice for laptops). We would recommend a dedicated card for running the latest games, but integrated GPUs are improving all the time and casual gamers may find less recent games perform perfectly acceptably.

CPU Core Details

CPU CodenameKaby LakeClarkdale
MoBo SocketLGA 1151LGA 1156/Socket H
Notebook CPUnono
Release Date30 Nov -000107 Jan 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs2
CPU Threads4vs4
Clock Speed3.9 GHzvs3.46 GHz
Turbo Frequency-vs3.73 GHz
Max TDP51 Wvs73 W
Lithography14 nmvs32 nm
Bit Width64 Bitvs64 Bit
Max Temperature100°Cvs73°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size64 KBvs128 KB
L2 Cache Size512 KBvs512 KB
L3 Cache Size3 MBvs4 MB
Max Memory Size-vs16 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsHD i5 670
Base GPU Frequency-vs733 MHz
Max GPU Frequency-vs-
DirectX-vs10
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Core i3-7100 2-Core 3.9GHz is a high-end CPU based on Intel's 7th Gen 14nm, Kaby Lake microarchitecture. It offers 2 physical cores (4 logical), clocked at 3.9GHz. It doesn't have an unlocked multiplier, therefore, it can't be overclocked using traditional methods. It has 3MB of L3 Cache. Level 3 cache is a static memory bank of a processor and it is used to feed it instructions. This processor also supports DDR4 based RAMs with maximum memory support of 64GB. It has a maximum Thermal Power Design of 51W. It is on par with competitor processors. Among its many features, Intel Enhanced Speedstep, HyperThreading and Virtualization are activated. Turbo Boost is not activated. It integrates Intel HD Graphics 630 on board. It has a base frequency of 350MHz which can go up to 1GHz as well as offer DirectX 12 support. This CPU is likely to offer good computational performance but may suffer from performance dips on higher resolutions and demanding applications.Core i5-670 3.46GHz is a performance CPU based on the 45nm, Nehalem architecture.

It offers 2 Physical Cores (4 Logical), initially clocked at 3.46GHz, which may go up to 3.73GHz and 4MB of L3 Cache.
Among its many features, Hyper-Threading, Turbo Boost and Virtualization are activated.

The processor integrates very weak Graphics called Intel i5 670, with XX Execution Units, clocked at 733MHz which share the L2 Cache and system RAM with the processor.
Both the processor and integrated graphics have a rated board TDP of 73W.

It offers average performance. This means it will become a bottleneck in some demanding applications.