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Gaming Performance Comparison

Recommended System Requirements
Game Atom Z3745 1.33GHz Celeron Dual-Core 867 1.3GHz
Cyberpunk 2077 593% 608%
Assassins Creed: Valhalla 833% 854%
Call of Duty: Black Ops Cold War 571% 587%
FIFA 21 548% 563%
Microsoft Flight Simulator 685% 703%
Watch Dogs Legion 833% 854%
World of Warcraft: Shadowlands 977% 1001%
Grand Theft Auto VI 1038% 1064%
Horizon: Zero Dawn 685% 703%
Genshin Impact 424% 436%

In terms of overall gaming performance, the Intel Atom Z3745 1.33GHz is marginally better than the Intel Celeron Dual-Core 867 1.3GHz 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 Atom Z3745 1.33GHz was released over a year more recently than the Celeron Dual-Core 867, and so the Atom Z3745 1.33GHz is likely to have better levels of support, and will be more optimized for running the latest games.

The Atom Z3745 1.33GHz has 2 more cores than the Celeron Dual-Core 867. With 4 cores, the Atom Z3745 1.33GHz is much less likely to struggle with the latest games, or bottleneck high-end graphics cards when running them.

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 Atom Z3745 1.33GHz and Celeron Dual-Core 867 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 Atom Z3745 1.33GHz has a 0.03 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 Atom Z3745 1.33GHz has a 1536 KB bigger L2 cache than the Celeron Dual-Core 867, and although the Atom Z3745 1.33GHz does not appear to have an L3 cache, its larger L2 cache means that it wins out in this area.

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 Atom Z3745 1.33GHz has a 15 Watt lower Maximum TDP than the Celeron Dual-Core 867, and was created with a 10 nm smaller manufacturing technology. What this means is the Atom Z3745 1.33GHz will consume slightly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill slightly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

The Atom Z3745 1.33GHz 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 Celeron Dual-Core 867, 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 (Bay Trail), 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 CodenameBay Trail-TSandy Bridge
MoBo SocketNot sureBGA 1023
Notebook CPUyesyes
Release Date01 Apr 201401 Jan 2012
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs2
CPU Threads4vs-
Clock Speed1.33 GHzvs1.3 GHz
Turbo Frequency1.86 GHzvs-
Max TDP2 Wvs17 W
Lithography22 nmvs32 nm
Bit Width64 Bitvs-
Max Temperature105°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size224 KBvs128 KB
L2 Cache Size2048 KBvs512 KB
L3 Cache Size-vs2 MB
Max Memory Size-vs-
Memory Channels-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel HD Graphics Desktop (Bay Trail)no
Base GPU Frequency-vs-
Max GPU Frequency-vs-
DirectX-vs-
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 Intel Atom Z3745 is a mobile chip built on the 22nm Silvermont microarchitecture and was released during the 2nd quarter of 2014. It features 4 physical cores initially clocked at 1.33 GHz, which may go up to 1.86 GHz in Turbo mode. It has an L1 and L2 cache of 224 Kb and 2048 Kb respectively, and does not have an L3 cache. It integrates the Intel HD Graphics (Bay Trail) GPU and so is only capable of running very non-demanding games. It does however have an extremely low TDP of just 2W.Sandy Bridge is the codename for a microarchitecture developed by Intel beginning in 2005 for central processing units in computers to replace the Nehalem microarchitecture. Intel demonstrated a Sandy Bridge processor in 2009, and released first products based on the architecture in January 2011 under the Core brand.