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Gaming Performance Comparison

Recommended System Requirements
Game Core i7-8700 6-Core 3.2GHz Core i7-5775C 4-Core 3.3GHz
Red Dead Redemption 2 31% 4%
Call of Duty: Modern Warfare 49% 28%
Cyberpunk 2077 42% 18%
Halo: Reach 72% 60%
Star Wars: Jedi - Fallen Order 24% 7%
Detroit: Become Human 41% 17%
Borderlands 3 31% 4%
Microsoft Flight Simulator 25% 5%
Resident Evil 3 Remake 36% 10%
FIFA 20 51% 31%

In terms of overall gaming performance, the Intel Core i7-8700 6-Core 3.2GHz is massively better than the Intel Core i7-5775C 4-Core 3.3GHz 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 i7-8700 6-Core was released over three years more recently than the Core i7-5775C 4-Core, and so the Core i7-8700 6-Core is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Core i7-5775C 4-Core when running the latest games.

Both CPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings (assuming they are accompanied by equivalently powerful GPUs).

The Core i7-8700 6-Core has 2 more cores than the Core i7-5775C 4-Core. 6 cores is probably excessive if you mean to just run the latest games, as games are not yet able to harness this many cores. The cores in the Core i7-5775C 4-Core is more than enough for gaming purposes.

The Core i7-8700 6-Core has 4 more threads than the Core i7-5775C 4-Core. Both the Core i7-8700 6-Core and the Core i7-5775C 4-Core use hyperthreading. The Core i7-8700 6-Core has 2 logical threads per physical core and the Core i7-5775C 4-Core 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 i7-8700 6-Core and Core i7-5775C 4-Core 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 i7-5775C 4-Core has a 0.1 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. As such, we need to look elsewhere for more reliable comparisons.

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 i7-8700 6-Core has a 512 KB bigger L2 cache than the Core i7-5775C 4-Core, which means that it, at worst, wins out in this area, and at best, will provide superior gaming performance and will work much better with high-end graphics cards.

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.

Both the Core i7-8700 6-Core and the Core i7-5775C 4-Core have the same TDP of 65 Watts, and were created with the same manufacturing size of 14 nm, which means they will affect your yearly electricity bill about equally.

The Core i7-5775C 4-Core 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 i7-8700 6-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 Iris Pro Graphics 6200 Desktop, 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 CodenameCoffee LakeBroadwell
MoBo SocketLGA 1151LGA 1150
Notebook CPUnono
Release Date05 Oct 201730 Nov -0001
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores6vs4
CPU Threads12vs8
Clock Speed3.2 GHzvs3.3 GHz
Turbo Frequency4.6 GHzvs3.7 GHz
Max TDP65 Wvs65 W
Lithography14 nmvs14 nm
Bit Width64 Bitvs64 Bit
Max Temperature-vs105°C
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs256 KB
L2 Cache Size1536 KBvs1024 KB
L3 Cache Size12 MBvs6 MB
Max Memory Size-vs32 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIris Pro Graphics 6200 Desktop
Base GPU Frequency-vs300 MHz
Max GPU Frequency-vs1150 MHz
DirectX-vs11.2
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 i7-8700 6-Core 3.2GHz is a high-end CPU based on the 14nm Coffee Lake micro architecture. It offers 6 physical cores (12 logical), initially clocked at 3.2GHz, which may go up to 4.3GHz using 6 cores with Turbo Boost, or up to 4.6GHz boost clock on a single core. The i7-8700 has 12MB of L3 Cache. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated. This processor does not have multiplier unlocked. Therefore, you cannot overclock the Core i7-8700. This Core i7-8700 CPU offers excellent gaming performance and will not be the bottleneck in any modern gaming PC. It will be able to play all modern games comfortably on high/ultra graphics performance without being a hindrance to the accompanying GPU.Core i7-5775C is a high-end processor clocked at 3.3 GHz and can effectively go up to 3.7 GHz. It provides extremely efficient performance due to 14nm Lithography. Its performance is very good, capable of running most demanding applications and games without an issue.

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