Select any two CPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Celeron M ULV 800MHz Core Solo U1400 1.2GHz
Cyberpunk 2077 6332% 3298%
Assassins Creed: Valhalla 8559% 4475%
Call of Duty: Black Ops Cold War 6133% 3193%
Microsoft Flight Simulator 7186% 3749%
FIFA 21 5916% 3078%
Immortals: Fenyx Rising 6814% 3553%
Genshin Impact 4770% 2473%
Grand Theft Auto VI 10471% 5485%
World of Warcraft: Shadowlands 9900% 5183%
Watch Dogs Legion 8559% 4475%

In terms of overall gaming performance, the Intel Core Solo U1400 1.2GHz is marginally better than the Intel Celeron M ULV 800MHz 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 Core Solo U1400 was released less than a year after the Celeron M ULV, 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 Celeron M ULV and the Core Solo U1400 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 Celeron M ULV and the Core Solo U1400 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 Celeron M ULV and Core Solo U1400 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 Core Solo U1400 has a 0.4 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 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 Core Solo U1400 has a 1 Watt lower Maximum TDP than the Celeron M ULV. However, the Celeron M ULV was created with a 65 nm smaller manufacturing technology. Overall, by taking both into account, the Celeron M ULV and the Core Solo U1400 would appear to produce roughly the same amount of heat, and consume about the same amount of power.

CPU Core Details

CPU Codename-Yonah
MoBo SocketSocket 956Socket 479
Notebook CPUyesyes
Release Date01 Jun 200423 Apr 2006
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores1vs1
Clock Speed0.8 GHzvs1.2 GHz
Turbo Frequency-vs-
System Bus 400 MHzvs-
Max TDP7 Wvs6 W
Lithography-vs65 nm
Bit Width32 Bitvs-
Voltage Range1.004V KBvs-
Max Temperature100°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs64 KB
L2 Cache Size-vs2048 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 Size35mm x 35mmvs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Celeron brand has been used by Intel for several distinct ranges of x86 CPUs targeted at budget personal computers. Celeron processors can run all IA-32 computer programs, but their performance is somewhat lower when compared to similar CPUs with higher-priced Intel CPU brands. For example, the Celeron brand will often have less cache memory, or have advanced features purposely disabled. These missing features have had a variable impact on performance. In some cases, the effect was significant and in other cases the differences were relatively minor. Many of the Celeron designs have achieved a very high bang for the buck, while at other times, the performance difference has been noticeable. This has been the primary justification for the higher cost of other Intel CPU brands versus the Celeron range.Yonah was the code name for (the core of) Intel's first generation of 65 nm process mobile microprocessors, based on the Banias/Dothan-core Pentium M microarchitecture. SIMD performance has been improved through the addition of SSE3 instructions and improvements to SSE and SSE2 implementations, while integer performance decreased slightly due to higher latency cache. Additionally, Yonah includes support for the NX bit.