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Gaming Performance Comparison

Recommended System Requirements
Game Core i3-7100 2-Core 3.9GHz Pentium G2100T 2.6GHz
Cyberpunk 2077 90% 232%
Horizon: Zero Dawn 54% 169%
Hyper Scape 54% 169%
Call of Duty Warzone 32% 130%
Assassins Creed: Valhalla 90% 232%
Valorant 9% 59%
Grand Theft Auto VI 158% 351%
Doom Eternal 111% 269%
Death Stranding 66% 190%
Mount and Blade 2: Bannerlord 139% 318%

In terms of overall gaming performance, the Intel Core i3-7100 2-Core 3.9GHz is massively better than the Intel Pentium G2100T 2.6GHz 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 Pentium G2100T 2.6GHz 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 Pentium G2100T 2.6GHz 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 Pentium G2100T 2.6GHz may still be able to run slightly older games fairly effectively.

The Core i3-7100 2-Core has 2 more threads than the Pentium G2100T 2.6GHz. The Pentium G2100T 2.6GHz has one thread per physical core, whereas the Core i3-7100 2-Core uses hyperthreading and has 2 logical threads per physical core.

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 Pentium G2100T 2.6GHz 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 1.3 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 probably a good indicator that the is superior.

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 Pentium G2100T 2.6GHz have the same L2 cache size, and the same L3 cache size, so in terms of cache-related gaming performance, we have to look back to the clock rate, where the Core i3-7100 2-Core wins out.

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 Pentium G2100T 2.6GHz has a 16 Watt lower Maximum TDP than the Core i3-7100 2-Core. However, the Core i3-7100 2-Core was created with a 8 nm smaller manufacturing technology. Overall, by taking both into account, the Core i3-7100 2-Core and the Pentium G2100T 2.6GHz would appear to produce roughly the same amount of heat, and consume about the same amount of power.

The Pentium G2100T 2.6GHz 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 Intel HD Graphics Desktop (Ivy Bridge), 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 LakeIvy Bridge
MoBo SocketLGA 1151LGA 1155/Socket H2
Notebook CPUnono
Release Date30 Nov -000102 Sep 2012
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores2vs2
CPU Threads4vs2
Clock Speed3.9 GHzvs2.6 GHz
Turbo Frequency-vs-
Max TDP51 Wvs35 W
Lithography14 nmvs22 nm
Bit Width64 Bitvs64 Bit
Max Temperature100°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size64 KBvs128 KB
L2 Cache Size512 KBvs512 KB
L3 Cache Size3 MBvs3 MB
Max Memory Size-vs32 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel HD Graphics Desktop (Ivy Bridge)
Base GPU Frequency-vs350 MHz
Max GPU Frequency-vs1300 MHz
DirectX-vs11.1
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.Pentium G2100T 2.6GHz is an energy efficient budget processor based on the 22nm, Ivy Bridge architecture.

It offers 2 Physical Cores (2 Logical), clocked at 2.6GHz and 3MB of L3 Cache.
Among its many features, Virtualization is activated.

The processor integrates very weak Graphics called Intel HD Graphics Desktop (Ivy Bridge), with 6 Execution Units, initially clocked at 650MHz and that go up to 1050MHz, in Turbo Mode which share the L2 Cache and system RAM with the processor.
Both the processor and integrated graphics have a rated board TDP of 35W.

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