Select any two CPUs for comparison

CPU Core Details

CPU Codename Bay Trail-T Geneva
MoBo Socket Not sure Socket 812
Notebook CPU yes yes
Release Date 01 Apr 2014 12 May 2010
CPU Link GD Link GD Link

CPU Technical Specifications

CPU Cores 4 2
CPU Threads 4 -
Clock Speed 1.33 GHz 1.5 GHz
Turbo Frequency 1.86GHz -
Max TDP 2 W 15 W
Lithography 22 nm 45 nm
Bit Width 64 Bit -
Max Temperature 105°C -
Virtualization Technology no no

CPU Cache and Memory

L1 Cache Size 224 KB 256 KB
L2 Cache Size 2048 KB 2048 KB
L3 Cache Size - -
Memory Types
Max Memory Size 4 GB -
Memory Channels 2 -
ECC Memory Support no no

CPU Graphics

Integrated Graphics no no

CPU Mini Review

Mini Review The 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. Turion II Neo K625 is a Dual core mobile CPU based on the 45 nm Geneva Core. <br/> It features 2 cores, clocked 1.5GHz and the fastest supported memory is DDR3-1066. <br/> Its performance is below the average but decent enough to run most games from medium to high settings fluently, if paired with the appropriate GPU, obviously. However, the most demanding games will require very reduced settings to be played optimally.

Gaming Performance Comparison

In terms of overall gaming performance, the Intel Atom Z3745 1.33GHz is very slightly better than the AMD Turion II Neo K625 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.

Both the Atom Z3745 1.33GHz and the Turion II Neo K625 were released at the same time, so are likely to be quite similar.

The 4 has 2 more cores than the Turion II Neo. { With 4 cores, the 4 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 Turion II Neo 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 Turion II Neo has a 0.17 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 and the Turion II Neo have the same L2 cache size, and neither CPU appears to have an L3 cache. In this case, the <span class='gpu2Mention'>Turion II Neo</span> has a 32 KB bigger L1 cache, so would probably provide better performance than the <span class='gpu1Mention'>Atom Z3745 1.33GHz</span>, at least 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.