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Gaming Performance Comparison

Recommended System Requirements
Game Pentium 4 505-505J 2.66GHz Sempron 2300+
Cyberpunk 2077 1858% 2541%
Assassins Creed: Valhalla 2535% 3455%
Call of Duty: Black Ops Cold War 1797% 2459%
FIFA 21 1731% 2370%
Watch Dogs Legion 2535% 3455%
Microsoft Flight Simulator 2117% 2891%
World of Warcraft: Shadowlands 2943% 4006%
Grand Theft Auto VI 3117% 4240%
Godfall 3680% 5000%
Genshin Impact 1382% 1899%

In terms of overall gaming performance, the Intel Pentium 4 505-505J 2.66GHz is marginally better than the AMD Sempron 2300+ 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 Sempron 2300+ was released less than a year after the Pentium 4 505-505J, and so they are likely to have similar levels of support, and similarly optimized performance 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 Pentium 4 505-505J and the Sempron 2300+ both have 1 cores, and so are quite likely to struggle with the latest games, or at least bottleneck high-end graphics cards when running them. With a decent accompanying GPU, the Pentium 4 505-505J and the Sempron 2300+ may still be able to run slightly older games fairly effectively.

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 Pentium 4 505-505J and Sempron 2300+ 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 4 505-505J has a 1.077 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 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 Sempron 2300+ has a 255 KB bigger L2 cache than the Pentium 4 505-505J, but neither of the CPUs have L3 caches, so the Sempron 2300+ 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 Sempron 2300+ has a 22 Watt lower Maximum TDP than the Pentium 4 505-505J. However, the Pentium 4 505-505J was created with a 40 nm smaller manufacturing technology. Overall, by taking both into account, the Pentium 4 505-505J is likely the CPU with the lower heat production and power requirements, by quite a wide margin.

CPU Core Details

CPU CodenamePrescottThoroughbred (Model 8)
MoBo SocketLGA 775/ Socket TSocket 462/Socket A
Notebook CPUnono
Release Date21 Jun 200428 Jul 2004
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores1vs1
Clock Speed2.66 GHzvs1.583 GHz
Turbo Frequency-vs-
System Bus 533 MHzvs-
Max TDP84 Wvs62 W
Lithography90 nmvs130 nm
Bit Width64 Bitvs-
Voltage Range1.25V-1.400V KBvs-
Max Temperature67.7°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs128 KB
L2 Cache Size1 KBvs256 KB
L2 Cache Speed-vs-
L3 Cache Size-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphicsno
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 ReviewPentium 4 505-505J 2.66GHz are ageing processor based on Intel's Prescott 90nm microarchitecture. Given its age, lack of L3 cache, and single processing core, it is no longer suitable for high-end gaming, and is inferior to any recent products. It will still serve decently enough in an old computer that only has support for the LGA775 socket, but upgrading would be far more favorable than using this processor at this stage in its life.Sempron has been the marketing name used by AMD for several different budget desktop CPUs, using several different technologies and CPU socket formats. The Sempron replaced the AMD Duron processor and competes against Intel's Celeron series of processors. AMD coined the name from the Latin semper, which means always, to suggest the Sempron is suitable for daily use, practical, and part of everyday life.