Select any two CPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game Pentium III S1400MHz Sempron 64 LE-1100
Cyberpunk 2077 2151% 1937%
Assassins Creed: Valhalla 2931% 2643%
Call of Duty: Black Ops Cold War 2082% 1874%
FIFA 21 2006% 1805%
Microsoft Flight Simulator 2450% 2208%
Watch Dogs Legion 2931% 2643%
World of Warcraft: Shadowlands 3400% 3067%
Grand Theft Auto VI 3600% 3248%
Horizon: Zero Dawn 2450% 2208%
Genshin Impact 1605% 1443%

In terms of overall gaming performance, the AMD Sempron 64 LE-1100 is marginally better than the Intel Pentium III S1400MHz 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 64 LE-1100 was released less than a year after the Pentium III S1400MHz, 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 III S1400MHz and the Sempron 64 LE-1100 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 III S1400MHz and the Sempron 64 LE-1100 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 III S1400MHz and Sempron 64 LE-1100 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 64 LE-1100 has a 0.5 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 .

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 III S1400MHz has a 256 KB bigger L2 cache than the Sempron 64 LE-1100, but neither of the CPUs have L3 caches, so the Pentium III S1400MHz 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 Pentium III S1400MHz has a 13 Watt lower Maximum TDP than the Sempron 64 LE-1100. However, the Sempron 64 LE-1100 was created with a 65 nm smaller manufacturing technology. Overall, by taking both into account, the Sempron 64 LE-1100 is likely the CPU with the lower heat production and power requirements, by quite a wide margin.

CPU Core Details

CPU CodenameTualatinSparta
MoBo SocketSocket 370Socket AM2
Notebook CPUnono
Release Date30 Nov -000108 Oct 2007
CPU LinkGD LinkGD Link

CPU Technical Specifications

CPU Cores1vs1
CPU Threads1vs-
Clock Speed1.4 GHzvs1.9 GHz
Turbo Frequency-vs-
Max TDP32 Wvs45 W
Lithography130 nmvs65 nm
Bit Width-vs-
Max Temperature69°Cvs-
Virtualization Technologynovsno

CPU Cache and Memory

L1 Cache Size32 KBvs128 KB
L2 Cache Size512 KBvs256 KB
L3 Cache Size-vs-
ECC Memory Supportnovsno

CPU Graphics

Base GPU Frequency-vs-
Max GPU Frequency-vs-
Displays Supported-vs-

CPU Package and Version Specifications

Package Size-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Pentium III (marketed as Intel Pentium III Processor, informally PIII, also stylized as Pentium !!! ) brand refers to Intel's 32-bit x86 desktop and mobile microprocessors based on the sixth-generation P6 microarchitecture introduced on February 26, 1999. The brand's initial processors were very similar to the earlier Pentium II-branded microprocessors. The most notable differences were the addition of the SSE instruction set (to accelerate floating point and parallel calculations), and the introduction of a controversial serial number embedded in the chip during the manufacturing processSempron 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.