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Gaming Performance Comparison

Recommended System Requirements
Game Atom D2500 1.87GHz Pentium 4 Mobile 2.8GHz
Cyberpunk 2077 1474% 2503%
Hitman 3 2019% 3404%
Resident Evil 8 1648% 2790%
Assassins Creed: Valhalla 2019% 3404%
FIFA 21 1372% 2334%
Grand Theft Auto VI 2487% 4177%
Call of Duty: Black Ops Cold War 1426% 2422%
Genshin Impact 1092% 1871%
Far Cry 6 2384% 4006%
The Medium 2601% 4365%

In terms of overall gaming performance, the Intel Atom D2500 1.87GHz is very slightly better than the Intel Pentium 4 Mobile 2.8GHz 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 D2500 1.87GHz was released over three years more recently than the Pentium 4 Mobile, and so the Atom D2500 1.87GHz is likely to have far better levels of support, and will be much more optimized and ultimately superior to the Pentium 4 Mobile when running the latest games.

Both CPUs exhibit very poor performance, so rather than upgrading from one to the other you should consider looking at more powerful CPUs. Neither of these will be able to run the latest games in any playable way.

The Atom D2500 1.87GHz has 1 more core than the Pentium 4 Mobile. However, while the Atom D2500 1.87GHz will probably perform better than the Pentium 4 Mobile, both CPUs are likely to struggle with the latest games, and will almost certainly bottleneck high-end graphics cards. This should not affect games that are a few years old, and even the latest games should at least be playable on very low settings, as only recently have game developers begun to harness the power of multiple cores.

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 D2500 1.87GHz and Pentium 4 Mobile 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 Pentium 4 Mobile has a 0.94 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 Atom D2500 1.87GHz 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 Pentium 4 Mobile has a 1023 KB bigger L2 cache than the Atom D2500 1.87GHz, but neither of the CPUs have L3 caches, so the Pentium 4 Mobile 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 Atom D2500 1.87GHz has a 78 Watt lower Maximum TDP than the Pentium 4 Mobile, and was created with a 58 nm smaller manufacturing technology. What this means is the Atom D2500 1.87GHz will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

CPU Core Details

CPU CodenameCedarview-DPrescott
MoBo SocketSocket 559Socket 478/Socket N
Notebook CPUyesyes
Release Date25 Sep 201101 Jun 2004
CPU LinkGD LinkGD Link

CPU Technical Specifications

CPU Cores2vs1
CPU Threads2vs-
Clock Speed1.86 GHzvs2.8 GHz
Turbo Frequency-vs-
Max TDP10 Wvs88 W
Lithography32 nmvs90 nm
Bit Width64 Bitvs-
Voltage Range0.91V -1.21V KBvs-
Virtualization Technologynovsno

CPU Cache and Memory

L1 Cache Size56 KBvs16 KB
L2 Cache Size1 KBvs1024 KB
L3 Cache Size-vs-
Max Memory Size-vs-
Max Memory Bandwidth-vs-
Memory Channels-vs-
ECC Memory Supportnovsno

CPU Graphics


CPU Package and Version Specifications

Package Size22mm X 22mmvs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThis Atom CPU is one of the dual core releases, that's single-threaded! With only 2 x 512 kB 8-way associative caches and a clock speed @ 1.86 GHz, don't expect too much from it.The Mobile Intel Pentium 4 Processor was released to address the problem of putting a full desktop Pentium 4 processor into a laptop, which some manufacturers were doing. The Mobile Pentium 4 used a 533 MHz FSB, following the desktop Pentium 4's evolution. Oddly, increasing the bus speed by 133 MHz (33 MHz core) caused a massive increase in TDPs, as mobile Pentium 4 processors gave off 59.8 W - 70 W of heat, with the Hyper-Threading variants giving off 66.1 W - 88 W. This allowed the mobile Pentium 4 to bridge the gap between the desktop Pentium 4 (giving off 115 W maximum), and the Pentium 4-M (giving off 35 W maximum).