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Gaming Performance Comparison

Recommended System Requirements
Game Sempron SI-42 Turion II Neo K625
Cyberpunk 2077 1845% 866%
Assassins Creed: Valhalla 2518% 1201%
Call of Duty: Black Ops Cold War 1785% 836%
FIFA 21 1719% 804%
Microsoft Flight Simulator 2103% 994%
World of Warcraft: Shadowlands 2924% 1402%
Watch Dogs Legion 2518% 1201%
Horizon: Zero Dawn 2103% 994%
Grand Theft Auto VI 3097% 1488%
Genshin Impact 1373% 632%

In terms of overall gaming performance, the AMD Turion II Neo K625 is noticeably better than the AMD Sempron SI-42 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 Turion II Neo was released less than a year after the Sempron SI-42, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

The Turion II Neo has 1 more core than the Sempron SI-42. However, while the Turion II Neo will probably perform better than the Sempron SI-42, both CPUs are likely to struggle with the latest games, and will almost certainly bottleneck high-end graphics cards. Both CPUs also have quite low clock frequencies, which means recent games will have to be played at low settings, assuming you own an equivalently powerful GPU.

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 Sempron SI-42 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 Sempron SI-42 has a 0.6 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 Turion II Neo.

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 Turion II Neo has a 1536 KB bigger L2 cache than the Sempron SI-42, but neither of the CPUs have L3 caches, so the Turion II Neo wins out in this area with its larger L2 cache.

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 Turion II Neo has a 10 Watt lower Maximum TDP than the Sempron SI-42, and was created with a 20 nm smaller manufacturing technology. What this means is the Turion II Neo 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).

CPU Core Details

CPU CodenameSableGeneva
MoBo SocketSocket S1Socket 812
Notebook CPUyesyes
Release Date09 Jan 200912 May 2010
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores1vs2
Clock Speed2.1 GHzvs1.5 GHz
Turbo Frequency-vs-
Max TDP25 Wvs15 W
Lithography65 nmvs45 nm
Bit Width-vs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs256 KB
L2 Cache Size512 KBvs2048 KB
L3 Cache Size-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphicsnono

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 ReviewSempron SI-42 a mobile CPU part of the Cheap CPUS called "Sempron" released by AMD.
With only one core its performance is very very poor, so today's games might cause troubles.
Turion II Neo K625 is a Dual core mobile CPU based on the 45 nm Geneva Core.
It features 2 cores, clocked 1.5GHz and the fastest supported memory is DDR3-1066.
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.